ITECH IT7321 150/30V 3/1.5A Programmable AC Power Supply User Manual

Programmable AC Power

Supply

Series IT7300 User’s Manual

Model:

IT7321/IT7322/IT7322H/IT7324/IT7324H/IT7326/

IT7326H/IT7322T/IT7322HT/IT7324T/IT7324HT/

IT7326T/IT7326HT

Version: V2.4

Statement

No part of this manual may be

reproduced in any form or by any means

(including electronic storage and

retrieval or translation into a foreign

language) without prior permission and

written consent from Itech Electronic,

Co., Ltd. as governed by international

copyright laws.

Manual Article No.

IT7300-402210

Revision

Revision 2, published on

May 29th, 2019

Itech Electronic, Co., Ltd.

Trademark Statement

Pentium is a registered trademark of

Intel Corporation in the United States.

Microsoft, Visual Studio, Windows and

MS Windows are trademarks of

Microsoft Corporation in the United

States and/or other countries/regions.

Guarantee

The materials contained in this

document are provided “as is”, and is

subject to change, without prior notice,

in future editions. Further, to the

maximum extent permitted by applicable

laws, ITECH disclaims all warrants,

either express or implied, with regard to

this manual and any information

contained herein, including but not

limited to the implied warranties of

merchantability and fitness for a

particular purpose. ITECH shall not be

held liable for errors or for incidental or

indirect damages in connection with the

furnishing, use or application of this

document or of any information

contained herein. Should ITECH and the

user enter into a separate written

agreement with warranty terms covering

the materials in this document that

conflict with these terms, the warranty

terms in the separate agreement shall

prevail.

Technology license

Hardware and/or software in this

document cannot be provided without a

license and can only be used or copied

according to the license.

Restricted permission statement

Restricted permissions of the U.S.

government. Permissions for software

and technical data which are authorized

to the U.S. Government only include

those for custom provision to end users.

ITECH follows FAR 12.211 (technical

data), 12.212 (computer software).

DFARS 252.227-7015 (technical

data--commercial products) for national

defense and DFARS 227.7202-3

(permissions for commercial computer

software or computer software

documents) while providing the

customized business licenses of

software and technical data.

Safety Statement

“Caution” signs indicate danger. It is

required to pay attention to the contents

of these signs during implementation of

operations.

The damage to the product or loss of

important data may be caused in case of

improper operation steps or failure to

follow operation steps. Do not continue

to implement any improper operation

indicated in “Caution” signs when the

specified conditions are not fully

understood or these conditions are not

satisfied.

“Warning” indicates danger. It is required

to pay attention to the contents of these

signs during implementation of

operation steps. Personal casualties

may be caused in case of improper

operation steps or failure to follow these

operation steps. Do not continue to

implement any improper operation

indicated in “Warning” signs when the

specified conditions are not fully

understood or these conditions are not

satisfied.

NOTE

“Instructions” indicates operation

instructions. It is required to refer to the

contents of these signs during operation

steps. These signs are used for

providing tips or supplementary

information for operators.

IT7300 User’s Manual

Certification and Quality Assurance

IT7300 series programmable AC power supply fully meet all of the technical

specification in the manual.

Warranty Service

ITECH Company will provide one-year warranty services for the product

materials and manufacturing (excluding the following limitations).

⚫ When warranty service or repair is needed, please send the product to the

service unit specified by ITECH Company.

⚫ When the product is sent to ITECH Company for warranty service, the

customer must pay the one-way freight to the maintenance department of

ITECH, and ITECH will be responsible for return freight.

⚫ If the product is sent to ITECH for warranty service from other countries,

the customer will be responsible for all the freight, duties and other taxes.

Limitation of Warranty

⚫ Warranty service does not apply to the damage caused in the following

circumstances:

⚫ Damage resulting from customer-wired circuits or customer-supplied parts

or accessories;

⚫ Product which has been modified or repaired by the customer;

⚫ Damage caused by the circuit installed by the customer or damage caused

by operation of the product in non-specified environment;

⚫ The product model or serial number is altered, deleted, removed or made

illegible by customer;

⚫ Damage caused by accidents, including but not limited to lightning, water,

fire, abuse or negligence.

Safety Signs

Direct current

ON (power)

Alternating current

OFF (power)

Both direct and alternating

current

Power-on state

Protective earth (ground)

terminal

Power-off state

Earth (ground) terminal

Reference terminal

Caution

Positive terminal

IT7300 User’s Manual

Warning (refer to this manual

for specific Warning or

Caution information)

Negative terminal

A chassis terminal

-

Safety Precautions

The following safety precautions must be observed during all phases of

operation of this instrument. Failure to comply with these precautions or specific

warnings elsewhere in this manual will constitute a default under safety

standards of design, manufacture and intended use of the instrument. ITECH

assumes no liability for the customer’s failure to comply with these precautions.

⚫ Do not use the instrument if it is damaged. Before operation, check

the casing to see whether it cracks. Do not operate the instrument in

the presence of inflammable gasses, vapors or dusts.

⚫ The power supply is provided with a power line during delivery and

should be connected to junction box. Before operation, be sure that

the power supply is well grounded. Make sure to use the power cord

supplied by ITECH.

⚫ Check all marks on the instrument before connecting the instrument

to power supply.

⚫ Use electric wires of appropriate load. All loading wires should be

capable of bearing maximum short-circuit of electronic load without

overheating. If there are multiple loads, each pair of the load power

cord must be carry out the full rated short-circuit output current of

the power securely.

⚫ Ensure the voltage fluctuation of mains supply is less than 10% of the

working voltage range in order to reduce risks of fire and electric

shock.

⚫ Do not install alternative parts on the instrument or perform any

unauthorized modification.

⚫ Do not use the instrument if the detachable cover is removed or

loosen.

⚫ To prevent the possibility of accidental injuries, be sure to use the

power adapter supplied by the manufacturer only.

⚫ We do not accept responsibility for any direct or indirect financial

damage or loss of profit that might occur when using the instrument.

⚫ This instrument is used for industrial purposes, do not apply this

product to IT power supply system.

⚫ Never use the instrument with a life-support system or any other

equipment subject to safety requirements.

⚫ Failure to use the instrument as directed by the manufacturer may

render its protective features void.

⚫ Always clean the casing with a dry cloth. Do not clean the internals.

IT7300 User’s Manual

⚫ Make sure the vent hole is always unblocked.

Environmental Conditions

The IT7300 series power supply can only be used indoors or in low

condensation areas. The following table shows general environmental

requirements for this instrument.

Environmental conditions

Requirement

Operating temperature

0°C - 40°C

Operating humidity

20% - 80%(non condensing)

Storage temperature

-10°C - 70 ° C

Altitude

Operating up to 2,000 meters

Installation category

II

Pollution degree

Pollution degree 2

NOTE

In order to ensure the accuracy of measurement, it is recommended to operate the

instrument half an hour after start-up.

Regulation Tag

The CE tag shows that the product

complies with the provisions of all

relevant European laws (if the year is

shown, it indicates that the year when

the design is approved).

This instrument complies with the WEEE

directive (2002/96/EC) tag

requirements. This attached product tag

shows that the electrical/electronic

product cannot be discarded in

household waste.

This symbol indicates that no danger

will happen or toxic substances will not

leak or cause damage in normal use

within the specified period. The

service life of the product is 10 years.

The product can be used safely within

the environmental protection period;

otherwise, the product should be put

into the recycling system.

Waste Electrical and Electronic Equipment (WEEE)

Directive

Waste electrical and electronic equipment (WEEE) directive,

2002/96/EC

The product complies with tag requirements of the WEEE

directive (2002/96/EC). This tag indicates that the electronic

equipment cannot be disposed of as ordinary household

waste.

IT7300 User’s Manual

Product Category

According to the equipment classification in Annex I of the

WEEE directive, this instrument belongs to the “Monitoring”

product.

If you want to return the unnecessary instrument, please

contact the nearest sales office of ITECH.

IT7300 User’s Manual

Compliance Information

Complies with the essential requirements of the following applicable European

Directives, and carries the CE marking accordingly:

⚫ Electromagnetic Compatibility (EMC) Directive 2014/30/EU

⚫ Low-Voltage Directive (Safety) 2014/35/EU

Conforms with the following product standards:

EMC Standard

IEC 61326-1:2012/ EN 61326-1:2013 ¹²³

Reference Standards

CISPR 11:2009+A1:2010/ EN 55011:2009+A1:2010 (Group 1, Class A)

IEC 61000-4-2:2008/ EN 61000-4-2:2009

IEC 61000-4-3:2006+A1:2007+A2:2010/ EN 61000-4-3:2006+A1:2008+A2:2010

IEC 61000-4-4:2004+A1:2010/ EN 61000-4-4:2004+A1:2010

IEC 61000-4-5:2005/ EN 61000-4-5:2006

IEC 61000-4-6:2008/ EN 61000-4-6:2009

IEC 61000-4-11:2004/ EN 61000-4-11:2004

1. The product is intended for use in non-residential/non-domestic environments. Use of the

product in residential/domestic environments may cause electromagnetic interference.

2. Connection of the instrument to a test object may produce radiations beyond the specified

limit.

3. Use high-performance shielded interface cable to ensure conformity with the EMC standards

listed above.

Safety Standard

IEC 61010-1:2010/ EN 61010-1:2010

IT7300 User’s Manual

Content

Certification and Quality Assurance ........................................................................................................... i

Warranty Service ........................................................................................................................................ i

Limitation of Warranty ................................................................................................................................. i

Safety Signs................................................................................................................................................ i

Safety Precautions ..................................................................................................................................... ii

Environmental Conditions .......................................................................................................................... iii

Regulation Tag ........................................................................................................................................... iii

Waste Electrical and Electronic Equipment (WEEE) Directive .................................................................. iii

Compliance Information ............................................................................................................................. v

Chapter1 Acceptance and Installation ................................................................................................ 1

1.1 Confirm Package Contents.................................................................................................................. 1

1.2 Installation Position .............................................................................................................................. 1

1.3 Installation of Power Cord ................................................................................................................. 15

1.4 Connecting Test Cables (Optional) .................................................................................................... 16

Chapter2 Quick Start........................................................................................................................... 20

2.1 Brief Introduction ............................................................................................................................... 20

2.2 Introduction of Front Panel ................................................................................................................ 21

2.3 Key Introduction ................................................................................................................................. 23

2.4 VFD Indicator Description.................................................................................................................. 24

2.5 Introduction of Rear Panel ................................................................................................................. 25

2.6 Power-on Selftest .............................................................................................................................. 27

2.7 Voltage Output Checkout................................................................................................................... 29

Chapter3 Function and Features ....................................................................................................... 30

3.1 Switching of Local/Remote Operation Modes ................................................................................... 30

3.2 Voltage Setup .................................................................................................................................... 30

3.3 Frequency Setup ............................................................................................................................... 31

3.4 Phase Angle Setup ............................................................................................................................ 31

3.5 Output On/Off Operation ................................................................................................................... 31

3.6 Switch the VFD Display Items ........................................................................................................... 31

3.7 Save and Recall Operation................................................................................................................ 32

3.8 Trigger Operation ............................................................................................................................... 32

3.9 Menu Operation ................................................................................................................................. 33

3.10 Function Operation .......................................................................................................................... 37

3.11 Output Range................................................................................................................................... 44

3.12 Key Lock .......................................................................................................................................... 44

3.13 BNC ................................................................................................................................................. 45

3.14 3ø-Setup .......................................................................................................................................... 46

Chapter4 Specification ....................................................................................................................... 49

4.1 Specification ...................................................................................................................................... 49

4.2 Supplemental Characteristics ............................................................................................................ 69

Chapter5 Remote Control ................................................................................................................... 70

5.1 RS232 Interface ................................................................................................................................. 70

5.2 USB Interface .................................................................................................................................... 71

5.3 LAN Interface ..................................................................................................................................... 72

5.4 GPIB Interface ................................................................................................................................... 72

Appendix .................................................................................................................................................... 73

Specifications of Red and Black Test Lines ............................................................................................. 73

Acceptance and Installation

Chapter1 Acceptance and Installation

Power supply is a high level safety equipment, there is a protected ground

terminal. Before Installation or operation, please read the safety signs and

instructions in this manual.

1.1 Confirm Package Contents

Open the package and check the articles within package box before operation.

In case of any non-conformity, missing or appearance wearing, please contact

ITECH immediately.

The package box should comprise:

Device name

Quantity

Model

Remarks

Programmable

AC Power

Supply

x1

IT7300

series

IT7300 series include:

IT7321/IT7322/IT7322H/IT7324/

IT7324H/IT7326/IT7326H/IT7322T/

IT7322HT/IT7324T/IT7324HT/IT73

26T/IT7326HT

Power Cord

x1

-

Different types of instruments are

equipped with different power

cables. For detailed specifications,

refer to 1.3 Installation of power

cord.

USB cable

x1

-

CD

x1

-

Comprising user manual and

documents related to programming

and grammatical guidelines.

Factory

alignment

report

x1

-

Test report before delivery

NOTE

After confirming that package contents are consistent and correct, please appropriately

keep package box and related contents. The package requirements should be met when

the instrument is returned to factory for repair.

1.2 Installation Position

The instrument should be installed at well-ventilated and rational-sized space.

Please select appropriate space for installation based on the power supply size

Acceptance and Installation

Model IT7321

Detailed dimensional drawings

Acceptance and Installation

Model IT7322/IT7324

Detailed dimensional drawings

Acceptance and Installation

Model IT7322H/IT7324H

Detailed dimensional drawings

Acceptance and Installation

Model IT7326

Detailed dimensional drawings

Acceptance and Installation

Model IT7326H

Detailed dimensional drawings

Acceptance and Installation

Model IT7322T

Detailed dimensional drawings

Acceptance and Installation

Model IT7322HT

Detailed dimensional drawings

Acceptance and Installation

Model IT7324T

Detailed dimensional drawings

Acceptance and Installation

Model IT7324HT

Detailed dimensional drawings

Acceptance and Installation

Model IT7326T

Detailed dimensional drawings

Acceptance and Installation

Model IT7326HT

Detailed dimensional drawings

Acceptance and Installation

1.3 Installation of Power Cord

Connect power cord of standard accessories and ensure that the power supply

is under normal power supply.

AC power input level

Working voltage for IT7300 series power supply is shown as follows. So please

pay attention to the working input voltage.

⚫ IT7321, IT7322, IT7322H, IT7324, and IT7324H models support

110V/220V AC input.

The AC line switch of IT7321 is located at the bottom of the unit.

The AC line switches of IT7322, IT7322H, IT7324, and IT7324H are

located at the rear of the unit. Please pay attention to the AC level setup

before provide AC power.

AC power input level:

- Option 01:220VAC ± 10%, 47 to 63 Hz

- Option 02: 110VAC ± 10%, 47 to 63 Hz

⚫ IT7326 and IT7326H models support 220V AC input.

⚫ IT7322T, IT7322HT, IT7324T, IT7324HT, IT7326T and IT7326HT models

support 380V AC input.

Connecting AC Input

The power cords supplied with this product is certified for safety. In case

the supplied lines assembly needs to be replaced, or an extension lines

must be added, be sure that it can meet the required power ratings of this

product. Any misuse voids the warranty of this product.

Before connecting power cords, turn off the power.

⚫ IT7321: Connect standard power cord to the power supply input terminal.

⚫ IT7322/IT7322H/IT7324/IT7324H/IT7326/IT7326H AC input connector as

follows. (Take the example of IT7324H.)

Connecting AC Input

Acceptance and Installation

1. In the above illustration, one end of the AC power cord is connected to

the AC input terminal in the rear panel of the power supply.

Connect the wire, zero line and ground to the corresponding terminal of

the device. Before inserting, please loose the screw, lock the screw

when it is inserted.

2. Connect the three terminals brown to line (L), blue to neutral (N), and

yellow-green to ground (GND) on the other end of the power cord to

your AC distribution panel.

⚫ IT7322T/IT7322HT/IT7324T/IT7324HT/IT7326T/IT7326HT AC input

connections are the same, and the end of the AC power cord connected to

the AC input terminal on the rear panel of the power supply is connected.

The user only needs to connect the other end of the AC power cord to the

AC distribution panel, the brown terminal is connected to L1, the gray

terminal is connected to L2, the black terminal is connected to L3, the blue

terminal is connected to N, and the yellow terminal is connected to the

GND.

The connection diagram is as follows:

1.4 Connecting Test Cables (Optional)

Test cables are not standard accessories of the instrument. Please select

optional red and black test cables for individual sales based on the maximum

current value. For specifications of test cables and maximum current values,

refer to “Specifications of Red and Black Test Lines” in “Appendix”.

Acceptance and Installation

⚫ Before connecting test cables, be sure to switch off the instrument.

Power switch is in Off position. Otherwise, contact with output

terminals in rear panel may cause electrical shock.

⚫ To avoid electrical shock, before testing, please make sure the rating

values of the testing cables, and do not measure the current that

higher than the rating value. All test cables shall be capable of

withstanding the maximum short circuit output current of the power

supply without causing overheat.

⚫ If several loads are provided, each pair of load wires shall safely

withstand the rated short circuit output current of the power supply

under full load.

⚫ Always use test cables provided by ITECH to connect the equipment.

If test cables from other factories are used, please check that the test

cable can withstand maximum current.

The front panel of IT7300 series power supply is equipped with the front panel

output terminal and rear panel output terminal (see 2.2 Introduction of front

panel and 2.5 Introduction of rear panel).

Before using the output terminal of the rear panel to connect the device under

test (DUT), remove the protective cover or panel covering the output terminal

on the rear panel firstly, then connect the test cables, and take the other end of

the test cables out of the hole in the protective cover or panel, and then put the

protective cover or panel back in place. To avoid the risk of electric shock if the

output terminal is accidentally touched during the test operation.

Connection of the front panel output terminal

The models that support the front panel output are: IT7321, IT7322, IT7324,

IT7326, IT7322T, IT7324T, and IT7326T.

The connection method of the front panel output is as follows: directly insert the

plug at one end of the cable into the output interface of the front panel, and

connect the other end to the DUT.

The maximum output current of the front panel output terminal is 10A. In order

to facilitate operation, the user can directly connect the front panel output

terminal if the output current is less than 10A.

If the output current of the output terminal of power supply exceeds 10A, the

user must connect the rear panel output terminal. If you want to obtain the

specifications of the equipment, please refer to 4.1 Specification.

Connection of the rear panel output terminal

The user can connect the rear panel output terminal according to the power

output specifications. Specific connection of

IT7321/IT7322/IT7322H/IT7324/IT7324H/IT7326/IT7326H (after removing the

protective cover) is shown in the figure below.

Acceptance and Installation

Specific connection of

IT7322T/IT7322HT/IT7324T/IT7324HT/IT7326T/IT7326HT (after removing the

panel) is shown in the figure below.

⚫ When used as a single-phase power source, the connection is shown in

the next figure.

When IT7322T/IT7322HT/IT7324T/IT7324HT/IT7326T/IT7326HT is

used as a single-phase power source, please connect the output

terminals: L1, N, GND.

⚫ When used as a three-phase power source, the connection is shown in the

next figure.

The specific steps for connecting the rear panel output terminals are as follows:

Acceptance and Installation

1. Make sure the power switch of the instrument is off.

2. Remove the protective cover or panel that covers the rear panel output

terminals.

3. Unscrew the screws of the output terminals and connect the red and black

test cables to the output terminals. Re-tighten the screws.

When maximum current that one test cable can withstand fails to meet the

current rated current, use several pieces of red and black test cables. For

example, the maximum current is 1,200A, then 4 pieces of 360A red and

black cables are required.

4. Take the other end of the test cables out of the hole in the protective cover

or panel and install the cover or panel back.

5. Connect the other end of the red and black cables to the DUT terminal.

Quick start

Chapter2 Quick Start

This chapter introduces the front panel, the rear panel, key functions and VFD

display function of the power supply, make sure that you can quickly know the

appearance, instruction and the key function before you operate the power

supply. Help you make better use of this series of power supply.

2.1 Brief Introduction

IT7300 series of power supply is divided into the single-phase

(IT7321/IT7322/IT7322H/IT7324/IT7324H/IT7326/IT7326H) and three-phase

(IT7322T/IT7322HT/IT7324T/IT7324HT/IT7326T/IT7326HT) programmable AC

power supply. The three-phase power supply is assembled by three

corresponding single-phase power supplies. For example, IT7322T is

assembled by IT7322. Therefore, the introduction to front panel, key, VFD

indicator, rear panel, power-on selftest, voltage output checkout, and function

and features of three-phase power supply are similar to those of single-phase

power supply.

IT7300 series can analog various AC inputs, and measure a series of important

parameters of DUT. IT7300 series power supply has following standard

communication interfaces: LAN, USB, GPIB (except IT7321) and RS232. With

combined features of both desktop and systematic power supplies, it can

deliver multi-purpose solutions based on design and test requirements. Main

features and advantages are listed below:

⚫ Vacuum fluorescent display (VFD)

⚫ LED display of panel function keys

⚫ Adjustable set values by knob

⚫ Output is switch control

⚫ Display Vrms, Irms, Ipeak, frequency, PF, apparent power and active

power simultaneously

⚫ Programmable frequency:45HZ-500HZ

⚫ Turn on, turn off phase angle control (0-360°)

⚫ Analog surge/trapped wave

⚫ Support front and rear panel output

⚫ High accuracy and resolution

⚫ Memory capacity:10 groups

⚫ Over-voltage, over-power, over-current, over-temperature protection

features

⚫ Smart temperature-control fan with low noise

⚫ Standard communication interface LAN, USB, GPIB (except IT7321),

RS232

⚫ Software monitoring via computer

⚫ Support 3-phase AC power supply function when 3 units are

connected together via System Bus (except IT7321)

Model

Voltage

Current

Power

IT7321

300V

3A

300VA

IT7322

300V

6A

750VA

IT7322H

500V

3A

750VA

Quick start

IT7324

300V

12A

1500VA

IT7324H

500V

6A

1500VA

IT7326

300V

24A

3000VA

IT7326H

500V

12A

3000VA

IT7322T

300V

6A

2250VA

IT7322HT

500V

3A

2250VA

IT7324T

300V

12A

4500VA

IT7324HT

500V

6A

4500VA

IT7326T

300V

24A

9000VA

IT7326HT

500V

12A

9000VA

2.2 Introduction of Front Panel

⚫ Front panel of IT7321

1. VFD display

2. Rotary knob

3. Compound key, the local switch key and power switch

4. Numeric keys and ESC

5. Function keys

6. UP, DOWN, LEFT and RIGHT key

7. Output terminals

⚫ Front panel of IT7322/IT7324

1. Power button

Quick start

2. VFD display

3. Compound key, the local switch key and power switch

4. Numeric keys and ESC

5. Function keys

6. UP, DOWN, LEFT and RIGHT key

7. Rotary knob

8. Output terminals

9. Fan

⚫ Front panel of IT7322H/IT7324H

1. Power button

2. VFD display

3. Compound key, the local switch key and power switch

4. Numeric keys and ESC

5. Function keys

6. UP, DOWN, LEFT and RIGHT key

7. Rotary knob

8. Fan

⚫ Front panel of IT7326

1. Power button

2. VFD display

3. Compound key, the local switch key and power switch

4. Numeric keys and ESC

Quick start

5. Function keys

6. UP, DOWN, LEFT and RIGHT key

7. Rotary knob

8. Output terminals

9. Fuses

10. Fan

⚫ Front panel of IT7326H

1. Power button

2. VFD display

3. Compound key, the local switch key and power switch

4. Numeric keys and ESC

5. Function keys

6. UP, DOWN, LEFT and RIGHT key

7. Rotary knob

8. Fan

2.3 Key Introduction

Key description, see the table below:

Quick start

Keys

Name and the function

(Shift)

Compound key, co-work with High/Auto, Phase, Save,

Menu, Trigger, Lock, Sweep, List and*Dimmer.

(Local)

Local button, switch from remote mode to local

operation mode

(Power)

Power on key

~

Numeric keys

/Sweep

Number 7/Sweep function key

/List

Number 8/List function key

/*Dimmer

Number 9/Dimmer function key

Cancel /return keys

/High/Auto

Set the voltage value/Switch the voltage range

between high range and Auto range mode

/Phase

Set the frequency /set the phase angle

/Save

Recall the setup from internal memory/ Store the

AC source settings in non-volatile memory.

/Menu

Switch the VFD display to be apparent power,

peak current, active power and power factor/entry

the menu setup

/Trigger

Enter key, to confirm the number entered and

operation/trigger button, which is used to trigger

the List test

/Lock

Output on (off) keys, control power output state /

keypad lock function keys, used to lock the panel

buttons

Left and right direction keys, used to set the value,

to adjust the cursor to the specified location

Up and down keys, used to turn over the item in

the menu or increase (decrease) the output

voltage or current values

2.4 VFD Indicator Description

VFD indicator function description as follow:

Char

Function description

Char

Function description

OFF

Output is off

Prot

OCP/OVP/OTP/OPP Protection

Rmt

The AC source is in

remote mode

Auto

Auto change the voltage

range

SRQ

Service request

*

Dimmer function is enabled

Error

The power supply

has an error

Shift

Shift button is pressed

Trig

Awaiting for a trigger

signal

Lock

Key operation is locked

Quick start

2.5 Introduction of Rear Panel

⚫ Rear panel of IT7321

1. LAN communication interface

2. RS232 communication interface

3. USB communication interface

4. Cooling fans

5. AC power socket and Fuse

6. Output terminals

7. BNC terminal

⚫ Rear panel of IT7322/IT7322H/IT7324/IT7324H

⚫ Rear panel of IT7326/IT7326H

Quick start

1. AC power input socket

2. 110V/220V AC power selection switch

3. BNC terminal

4. Output terminals

5. System Bus

6. RS232 communication interface

7. LAN communication interface

8. USB communication interface

9. GPIB communication interface

10. Cooling fans

11. Fuses

The IT7322T, IT7322HT, IT7324T, IT7324HT, IT7326T, and IT7326HT are

three-phase models that are composed of three single-phase power supplies.

The AC power input terminals and output terminals are located below the rear

panel of the cabinet. See the following illustration for details. For other terminals

(such as communication interface terminals), you need to remove the rear

panel of the corresponding position of the A-phase power supply, and then

connect the terminals.

The IT7322T, IT7322HT, IT7324T, and IT7324HT rear panels have the same

structure, so the IT7324HT is used as an example.

IT7324HT rear panel IT7326HT rear panel

1. The rear panel of the corresponding position of the A-phase power supply.

Before using the rear panel terminal function, remove the panel and then connect

the terminals.

Quick start

The rear panel of the A-phase power supply (IT7322, IT7322H,

IT7324, and IT7324H) of IT7322T, IT7322HT, IT7324T, and IT7324HT

contains a 110V/220V switch. Do not move the transfer switch here,

and keep it at 220V.

2. The main power switch of the cabinet.

3. The outlet hole of the AC power input cord.

4. The outlet hole of the AC power output cord (i.e., the test cables).

2.6 Power-on Selftest

A successful selftest indicates that the purchased power product meets delivery

standards and is available for normal usage.

Before operation, please confirm that you have fully understood the safety

instructions.

⚫ To avoid burning out, be sure to confirm that power voltage matches with

supply voltage.

⚫ Be sure to connect the main power socket to the power outlet of protective

grounding. Do not use terminal board without protective grounding. Before

operation, be sure that the power supply is well grounded.

Power Switch Introduction

The switch status of single-phase power supply is as follows.

The three-phase power supplies are equipped with separate power switches,

such as master switch and branch switch. The relationship of state of all

equipment and switch states is as follow.

Master switch

state

Branch

switch state

State of all

equipment

ON

OFF

ON

OFF

Selftest steps

Normal selftest procedures:

1. Correctly connect the power cord. Press Power key to start up.

ON OFF

OFF ON

Quick start

With regards to IT7322T, IT7322HT, IT7324T, IT7324HT, IT7326T and

IT7326HT, you need to turn on three single instruments.

The power supply starts to selftest.

2. After selftest, VFD display the status as below:

During self-test of the power supply, if EEPROM has error, the “Error” indicator

on the status bar lights up. You can check the selftest error on the INFOR item

in the MENU.

Exception handling

If the power supply cannot start normally, please check and take measures by

reference to steps below.

1. Check whether the power cord is correctly connected and confirm whether

the power supply is powered.

Correct wiring of power cord => 2

Incorrect wiring of power cord => Re-connect the power cord and check

whether the exception is removed.

2. Check whether the power in On. Power key is under “ ” On status.

Yes => 3

No => Please check the Power key to start power and check whether the

exception is removed.

3. Check whether the fuse of power supply is burned out.

If yes, change fuse. Detailed steps: (Taking an example of IT7321):

1) Remove the AC power cord and open the plastic cover located at

the AC power inlet, then you will see the fuse.

2) Replace with a fuse of the same specification and install it.

OFF

200.0V 0.0mA 60.0

0.00W PF=0.000 0.0S

Effective power

Power factor

Output time

Output state

Effective

voltage

Current

Frequency

Quick start

Fuse specification list:

Model

Fuse

specification(220VAC)

Fuse

specification(110VAC)

IT7321

6.3A

10A

IT7322

15A

30A

IT7322H

15A

30A

IT7324

30A

60A

IT7324H

30A

60A

IT7326

60A

Does not support

110VAC input

IT7326H

60A

Does not support

110VAC input

NOTE

Fuse of IT7326/IT7326H/IT7326T/IT7326HT can unscrew directly by hand. For fuse

position, see Introduction of Rear Panel for details. Remove the rear panel before

replacing the fuse of IT7326T/IT7326HT.

IT7322/IT7322H/IT7324/IT7324H/IT7322T/IT7322HT/IT7324T/IT7324HT fuse is inside

the power supply and must be replaced by professional personnel.

2.7 Voltage Output Checkout

The following procedures check to ensure that the power supply develops its

rated outputs and properly responds to operation from the front panel.

The following steps verify basic voltage functions without load.

1. Turn on the power supply.

Note

IT7322T, IT7322HT, IT7324T, IT7324HT, IT7326T and IT7326HT are assembled by

three single-phase instruments and can output three-phase AC power source. When

you operate the instrument which is set to Phase A, the other two instruments will

execute the same operation.

2. Press and numeric key to set an effective voltage, press

to confirm.

3. Press and numeric key to set the frequency, press to

confirm.

4. Press to turn on the output. Note: When button is lit

which means the output is ON, meanwhile indicator light of “OFF” on

VFD will disappear.

5. Check the output waveform with an oscilloscope. Set different

voltage and check whether the displayed voltage is close to setting

voltage.

6. Ensure that the voltage can be adjusted from zero to the full rated

value.

EnterEnter

On/Off

Function and Features

Chapter3 Function and Features

This chapter introduces the basic operations of IT7300 series AC source.

IT7322T, IT7322HT, IT7324T, IT7324HT, IT7326T and IT7326HT are

assembled by three single-phase instruments and can output

three-phase AC power source. When you operate the instrument which

is set to Phase A, the other two instruments will execute the same

operation. The operations of the Phase A instrument are consistent with

those of the corresponding single instrument.

Including the following subdivisions:

⚫ Switching of local/remote operation modes

⚫ Voltage setup

⚫ Frequency setup

⚫ Phase angle setup

⚫ Output on/off operation

⚫ Switch the VFD display items

⚫ Save/recall operation

⚫ Trigger operation

⚫ Menu operation

⚫ Function operation

⚫ Output range

⚫ Key lock

⚫ BNC terminals function

⚫ 3-phase AC power supply function

3.1 Switching of Local/Remote Operation Modes

Press the local button to change the AC source from remote to local

operation. After you power on the AC source, it defaults in local mode, all

buttons are enabled. While in remote mode, most buttons are disabled except

Shift and Local keys. In addition, the mode modification will not affect the output

parameters.

3.2 Voltage Setup

You can set voltage within the range of rated voltage value. When you press

button, the button will be lit. This indicates that you can set voltage.

There are three ways to set output voltage through front panel.

⚫ The first way: press , adjust cursor location through button,

pressing and will enable you to adjust the setting voltage value.

⚫ The second way: press , adjust cursor location through

button, adjust rotary knob to change the setting

voltage value.

⚫ The third way: press button and numeric key ( to ) to

set voltage value.

V-setV-set

0

9

Function and Features

3.3 Frequency Setup

You can set frequency within the range 45Hz to 500Hz. When you press

, the button will be lit. This indicates that you can set frequency. There

are three ways to set frequency through front panel.

⚫ The first way: press , adjust cursor location through

button, pressing and will enable you to increase or

decrease the setting frequency value.

⚫ The second way: press , adjust cursor location through

button, adjust rotary knob to change the setting

frequency value.

⚫ The third way: press button and numeric key( to ) to

set frequency value

3.4 Phase Angle Setup

You can set the starting and stop phase angle within range of 0~360° by

pressing (Shift)+ (Phase),VFD will display as below:

Press numeric keys to set the starting phase angle and press to

confirm. Then the VFD will indicate next operation to set stop phase.

Press numeric keys to set the stop phase angle and press to confirm.

3.5 Output On/Off Operation

button is used to control the output state of AC source. When

button is lit, it indicates the output in on state. When output button is

dark which means the output is turned off.

Note:

make sure you have connected AC source and test DUT very well, then press

button to minimize shock hazard.

3.6 Switch the VFD Display Items

Press button to change the VFD display of bottom line.

Default VFD display: effective voltage, effective current, frequency

Active power, power factor, output time

0

9

Enter

On/Off

OFF

0.0V 0.0mA 50.0

Start Phase= 0.0° 0.6S

OFF

0.0V 0.0mA 50.0

Stop Phase= 0.0° 0.6S

Function and Features

Press to switch the display:

effective voltage, effective current, frequency

apparent power, peak current, output time

Notes:

The time shown on the VFD is the output time of AC source. Press to

start the timing when power is on; press again to turn off power. The

duration of power supply will be displayed on the VFD until the next power

starts when the timer will reset. The timing is based on the decimal system:

when the time reaches 999.9 s, the timing will be displayed in minutes (m);

when the time reaches 999.9 m, the timing will be displayed in hours (h).

3.7 Save and Recall Operation

IT7300 series AC source provides10 non-volatile registers to save instrument

settings for recall later. Each operating state includes preset voltage, preset

frequency, starting and stop phase angle, output range level and dimmer phase

angle.

Press(Shift) + (Save) key to recall /save settings.

Save operation:

To save the instrument’s settings to a register, press shift +

(Save).You’ll be prompted for a register number. Enter a number between 0 and

9, then press the Enter key. The setting is saved.

Recall operation:

Press button, you’ll be prompted for a register number. Enter a

number between 0 and 9, then press the Enter key. The setting is recalled.

3.8 Trigger Operation

IT7300 power supply can be triggered by means of manual trigger (MENU),

command trigger (BUS) and external trigger (EXTERN). Manual trigger means

to trigger by keys; command trigger means to trigger through the

communication command when PC is used for control; and external trigger

On/Off

Recall

OFF

0.0V 0.0mA 50.0

0.00W PF= 0.000 0.0S

OFF

0.0V 0.0mA 50.0

0.00VA 0.00Apk 0.0S

OFF

2.0V 0.0mA 50.0

Save data bank=0 0.0S

OFF

2.0V 0.0mA 50.0

Recall data bank=0 0.0S

Function and Features

means to trigger by the BNC terminal at rear panel.

To trigger operation by the panel, you need to set the trigger operation mode

(TRIG) in the system menu to MENU. For details, see Section 3.9 Menu

Operation.

During surge/trapped wave test under List operation, press (Shift) +

(Trigger) to trigger surge/trapped wave. When LIST file is running, the

trigger function key (Trigger) will flick.

3.9 Menu Operation

3.9.1 Menu Description

Press (Shift)+ (Menu)to enter menu. View the menu on the

VFD, and use the direction keys or the knob to scroll through the

complete menu listed below. Press to enter the selected menu

function, press to return to the previous menu.

MENU

System

Init

INITIALIZE

Initialize system menu

Esc

Cancel initialization

Enter

Confirm initialization

Power-On

POWER-ON PARAMENT

Set the Power ON/OFF state after power up.

Sav0(Def)

The preset parameter stored in group 0

Rst

Factory Default

Power-Out

POWER-OUT

Power on state set

Off(Def)

In the state of power off

Last

In the state of latest power-off state

Buzzer

BUZZER

Set buzzer state

On(Def)

Buzzer on

Off

Buzzer off

Trigger

TRIGGER SOURCE

Trigger source selection.

Manual(Def)

Manual trigger

Bus

Bus trigger

Extern

External trigger

Communication

COMMUNICATION

Communication interface and parameter

setting

RS232(Def)

RS232

Select RS232

interface

GPIB

Address

Available range from

0-31

4800, 8, N, 1

Set Baud rate, data

bit, odd-even check,

stop bit and address

9600 O 2

19200 E

38400

57600

115200

USB

Select USB interface

LAN

Select LAN interface

Gateway=192.168.0.1

IP=192.168.0.125

Mask=255.255.255.0

Socket Port=30000

Set gateway, IP

address, mask

address and port.

Enter

ESC

Function and Features

RelayCtrl

It is used to control whether the switch status of the output relay is frequently

closed. When set to the Close state, the relay is always closed regardless of

whether the output is turned on or off, which is convenient for extending the

useful life of the relay.

Open

The switch status of the relay switches with the

state of the output.

⚫ When the output is turned on, the relay is

closed;

⚫ When the output is turned off, the relay is

disconnected.

Close

The switch status of the relay is frequently

closed.

⚫ When the output is turned on, the relay is

closed;

⚫ When the output is turned off, the relay is

closed.

Config

CONFIG

Config menu

Volt-Min

Voltage lower limit

Volt-Min=0.0V

Set Min. voltage

Volt-Max

Voltage upper limit

Volt-Max=300.0V

Set Max, voltage

Freq-Min

Frequency lower limit

Freq-Min=45.0Hz

Set frequency lower limit

Freq-Max

Frequency upper limit

Freq-Max=500.0Hz

Set frequency upper limit

Irms-Protect

Current RMS protect point

Irms-Protect=12.000A

Set current RMS protect point

Delay

Irms protection will

be triggered in 1s

Immediate

Protection will be

triggered

immediately.

BNC-Set

BNC PORT SETUP

I-Trigger

Input interface for external trigger

I-Ri

Input interface for on/off control

O-Sync

Output interface for AC phase

synchronization signal

O-On

Output interface for on/off state interface

Ipeak-Protect

Current peak protect point

Ipeak-Protect=12.000A

Set Current peak protect point

Delay

Irms protection will

be triggered in 1s

Immediate

Protection will be

triggered

immediately.

Dimmer

DIMMER

Phase dimmer

LeadingEdge

LeadingEdge Phase dimmer function

TrailingEdge

TrailingEdge Phase dimmer function

Off

Disable Phase dimmer function

List-Set

LIST START MODE

List start mode

On/Off

Press On/Off to start/stop running

Trigger

Press Shift + Enter (Trigger) to start/stop

running

Function and Features

3ø-Setup

A-Phase/ B-Phase /

C-Phase

Set the power supply to A-Phase, B-Phase

or C-Phase of AC power supply, with

difference of 120 degrees between any two

phases.

Disable/Enable

Turn on or turn off three-phase output

function.

To achieve this function, user need to

combine three units.

Meas- Curr-mode

Auto

Select automatic current measurement

mode

Manual

Select manual current measurement mode

High

Select high-range

current

measurement

Middle

Select mid-range

measurement

Low

Select low-range

measurement

Info

PRODUCT INFO:

Power information

ERROR INFO:

For look up error information

PRODUCT INFO:

IT73XX

Ver:0.01~0.01

Instrument type/Firmware version

PRODUCT SN:

XXXXXXXXXX

XXXXXXXX

Instrument SN

RECORD INFO:

Record information

Notes:

IT7321 has no GPIB and 3ø-Setup menu items.

3.9.2 Menu Function

Initialize the system menu

Relative factory default setup as follows:

Power-On

Sav0

Power-Out

Off

Buzzer

On

Trigger

Manual

Communication

RS232

Power-On

This parameter determines the state of the AC source after power up. If you

select “Rst”, the default output parameter settings will be active after power up.

The default setup is 0V,50HZ, 0° and 0°. If you select “Sav0”, then the AC

source will automatically recall the output parameters setting saved in 0 register

Note, please save these parameters in memory0 according to 3.7.

Power-Out

This parameter sets the output on/off state at power up. If you select “Last”, the

Function and Features

AC source will save the output state prior to power down and revert to that state

at power up. If you select “off”, the output state is always “off” when the power

supply is turned on. The recommend setting is “OFF”.

Buzzer

This item can set the key sound state. If in ON mode, then when you press a

button, the power supply will beep. If in OFF mode, the beeper will not make a

sound. The default set is in ON mode.

Trigger source

This item can set the trigger signal to Keyboard trigger, Command trigger or

External trigger during surge/trapped wave test under List operation. If Manual

is selected, the trigger signal is provided by (Shift) + (Trigger) on

the panel; if Bus is selected, command trigger mode is used; if External trigger

is selected, the trigger signal is provided by the trigger terminal (BNC) at the

rear panel. BNC is a composite terminal. You need to set its function to I-Trigger

in the Menu. For details, refer to Section 3.13 BNC. Set Factory Setting to

Manual.

Setting of Communication Interface

This item can set communication modes of the power supply. IT7321 has the

following standard communication interfaces: LAN/USB/RS232; and the others

have the following standard communication interfaces: LAN/USB/RS232/GPIB.

You can choose any one of them to communicate.

RS232 Baud rate: 4800/9600/19200/38400/57600/115200. Data bit: 8; check

bit: NONE, ODD, EVEN; stop bit: 1~2;

LAN parameters include Gateway address (Gateway), IP address (IP), Mask

address (Mask) and port (Socket Port).

When communication with computer, you need to select a communication

interface and set its corresponding configurations so that the communication

settings of the power supply are same with the PC configurations.

Config menu

The configuration menu is described below:

Volt-Min:

Voltage lower limit setting

Volt-Max:

Voltage upper limit setting

Freq-Min:

Frequency lower limit setting

Freq-Max:

Frequency upper limit setting

Irms-Protect:

Current RMS upper limit setting

BNC-Set:

Select BNC composite terminal function

Ipeak-Protect:

Peak Current upper limit setting

Dimmer:

Set phase dimmer

List-Set

Select List start mode

3ø-Setup

Set 3-phase AC power supply function

Meas-Curr-mode

Switch current measurement mode

Switch current measurement mode (Meas-Curr-mode)

This item can set the current measurement mode of the power supply. IT7300

Function and Features

series has two measurement modes: Auto and Manual. When Auto mode is

chosen, the switchover among High range, Middle range and Low range will be

performed by the instrument automatically. When Manual mode is chosen, the

switchover among High range, Middle range and Low range will be performed

by the user manually.

Check instrument information

1. Press (Shift)+ (Menu)to enter menu operation

Off

0.0V 0.0mA 50.0

0.00W PF=0.000 0.0S

2. Press right direction key to select INFO, press to confirm

MENU

System Config Info

3. VFD displays product model and firmware version number. Press

right key to display product serial number.

PRODUCT INFO:

IT73XX Ver:0.06~0.06

3.10 Function Operation

3.10.1 Sweep

The Sweep function is used to test efficiency of switching power supply and

capture the voltage and frequency at the maximum power point. The voltage

and frequency of power may be altered in the form of step ladder by setting the

initial voltage, final voltage, step voltage, initial frequency, final frequency, step

frequency and one-step time. The one-step time may be indicated in seconds,

minutes or hours. A maximum of 10 files may be stored. As the test closes,

voltage, frequency and current at the maximum power point may be displayed.

Note

This feature is not available in the three-phase model.

> Edit sweep file

NOTE

In the following operations, up and down keys are used to turn over steps, but

not to increase or decrease value. When up arrow appears in the lower left

corner, you can press the up key to jump to the previous step. When down

arrow appears in the lower right corner, press down key can entry the next step.

1. Press (Shift)+ (Sweep)to enter menu operation

Off

0.0V 0.0mA 50.0

0.00W PF=0.000 0.0S

2. Press to confirm when Edit is shining.

SWEEP

Edit Recall Disable

3. Press number key or knob to set start voltage, press to

confirm

START VOLTAGE

Voltage= 0.0V

Enter

Function and Features

4. Press numeric key or knob to set stop voltage, press to

confirm

END VOLTAGE

Voltage= 0.0V

5. Press numeric key or knob to set step voltage, press to

confirm

STEP VOLTAG

Voltage=0.1V

6. Press left and right arrow keys to select time unit second, minute and

hour, press to confirm.

TIME UNIT

Second Minute Hour

7. Set step last time(0.1s~999.9s), press to confirm

STEP TIME

Time=2.0S

8. Set start frequency(45Hz~500Hz), press to confirm

START FREQUENCY

Frequency=50.0Hz

9. Set stop frequency(45Hz~500Hz), press to confirm

END FREQUENCY

Frequency=50.0Hz

10. Set step frequency, press to confirm

STEP FREQUENCY

Frequency=1.0Hz

11. Press left and right arrow keys to select whether save sweeping file,”

No” means do not saving,” Yes” means saving.

SWEEP SAVE

No Yes

12. Select save position(0~9), press to confirm, VFD display

“Save Data success!“ for 1 second.

SWEEP SAVE

Save data bank=0

13. Return to Previous Menu and press to exit menu.

SWEEP

Edit Recall Disable

> Recall sweep file

1. Press multiple keys (Shift)+ (Sweep) to menu operation

Off

0.0V 0.0mA 50.0

0.00W PF=0.000 0.0S

2. Press right arrow key then press key to confirm when

Recall key is shining.

SWEEP

Edit Recall Disable

3. Press numeric key to select needed recall file and press

key to confirm. VFD display “Recall Data success! “ for 1 second.

RECALL SWEEP

Recall Sweep=0

4. Return to Previous Menu and press to exit menu.

SWEEP

Enter

Function and Features

Edit Recall Disable

> Set sweep test state and start test

1. Press multiple keys (Shift)+ (Sweep) to menu.

Off

0.0V 0.0mA 50.0

0.00W PF=0.000 0.0S

2. Press right arrow key to “Disable”, press down arrow key and

to infirm when “Disable” is shining. The word ”Sweep”

appears at the right bottom, which means the Sweep function is

active.

SWEEP

Edit Recall Disable

3. Press key to start sweep test. key will be shining

during test and will stop after that with power off automatically.

Off

0.0V 0.0mA 50.0

0.00W PF=0.000 Sweep

After the test is finished, to exit Sweep function, you need to change the Sweep

test status to Disable. Operating steps:

1. Press multiple key (Shift)+ (Sweep) to menu operation.

Off

0.0V 0.0mA 50.0

0.00W PF=0.000 0.0S

2. Press right arrow key to “Enable”, press down arrow key and

key to confirm and then exit sweep function (Sweep words

will disappeared on lower right of VFD display )

SWEEP

Edit Recall Enable

3.10.2 List Operation

With List operation applied to the alternating power supply, alternating

waveform sequences in various ranges may be output. The surge/trapped

wave may be added as required to simulate fluctuation of network voltage so as

to evaluate the test result of the instrument under such situation.

Various alternating sequences with output varied may be formed by listing the

voltage, frequency, slope, surge/trapped wave each step.

Note

This feature is not available in the three-phase model.

Enter

On/Off

EnterEnter

Enter

Function and Features

Surges wave

List sequences of IT7300 series can be stored into a non-volatile register, with a

capacity of 100 steps. The user can edit up to 10 files. Following shows how to

edit, recall and run a list file:

> Set Trigger Source

The surge/trapped wave test of LIST may be manually triggered to

control the start time of the surge/trapped wave.

Press (Shift)+ (Menu) to entry the menu. Then the system

will keep flickering------press to confirm. Press right key to select

Trigger. When selected, trigger item will be twinkling. Press to

confirm. Press right key to select Manual and press to confirm.

> Edit LIST File

1. Press (Shift)+ (List) button.

Off

0.0V 0.0mA 50.0

0.00W PF=0.000 0.0S

2. Select Edit, press to confirm.

LIST

Edit Recall Disable

3. Press numeric key, set the step counts(range:1~100), press

to confirm.

STEP COUNT

Step Count=0

4. Press numeric key, set number of cycles(range:1~1000), press

to confirm.

LIST REPEAT

List Repeat=0

5. Set the first step voltage and press to confirm.

LIST VOLTAGE

Step 0 Voltage=0.0V

6. Set the first step frequency and press to confirm.

LIST FREQUENCY

Step 0 Frequency=50.0Hz

7. Set the slope(0.1~999.9),press to confirm.

LIST SLOPE

Step 0 Slope=0.0S

8. Set the time unit: S, min, hour, press to confirm.

DWELL UNIT

Second Minute Hour

9. Set delay time(0.1~999.9),press to confirm.

LIST DWELL

Step 0 Dwell=0.0S

10. Disable or enable the surges or trap state, press to confirm. If

select Disable, then do nothing for step11-step14.

SD STATE

Disable Enable

11. Press left/right key to set whether create surges/wave traps

Enter

8

Enter

Function and Features

continuously. If select Yes, power supply will create surges/wave

traps in at intervals of 100ms.Press to confirm.

SD CONTINUE

No Yes

12. Press numeric keys to set voltage of surges/wave traps, press

to confirm. If set voltage is higher than current working

voltage, then it is surges, or it is wave traps.

SD VOLTAGE

Step 0 Voltage=0.0V

13. Set the starting time of surges/wave traps, press to confirm.

With the restriction of frequency, the max settable time is 25ms.

SD SITE

Step 0 Site= 0ms

14. Set the duration time of surges/wave traps. Press to

confirm.

SD TIME

Step 0 Time=0ms

15. Repeat step4-13.

LIST VOLTAGE

Step 1 Voltage=0V

16. NO: Do not save the list file, after power off the unit, current file will

lose. Yes: Save list file to assigned memory room for quickly recall at

any time.

LIST SAVE

No Yes

17. Store file to specified storage space(0~9 groups), press to

confirm. VFD will display “Save data success!”

LIST SAVE

Save data bank=0

> Set LIST State

1. Press (Shift)+ (List) to entry the List menu.

Off

0.0V 0.0mA 50.0

0.00W PF=0.000 0.0S

2. Press right key to select Disable, when it flickers, press up/down key

to select Enable, and press to confirm.

LIST

Edit Recall Disable

3. Now the List mode is enabled. Escape menu, the front panel will

display “LIST 0”.

LIST

Edit Recall Enable

4. List mode is enabled

Off

0.0V 0.0mA 50.0

0.00W PF=0.000 List 0

> Run LIST File

When LIST is in Enable status, exit menu.

⚫ If List-Set under Config menu is set to On/Off: Press key to turn on

Enter

8

Enter

Function and Features

power supply output, and LIST file starts running. Press to stop

running.

⚫ If List-Set under Config menu is set to Trigger: Press (Shift)+

(Trigger) key to trigger and the LIST file starts running. Press (Shift)+

(Trigger) again to stop running.

List running flag: When List is running, is flicking, and LIST step

displayed at the right bottom of VFD will also change by setting as time

elapses.

> Quit LIST Mode

1. Press (Shift)+ (List) to entry the List menu.

Off

0.0V 0.0mA 50.0

0.00W PF=0.000 0.0S

2. Press right key to select Enable, when it flickers, press up/down key

to select Disable, and press to confirm. Indicating List mode

is disabled.

LIST

Edit Recall Enable

3. Press to quit the List menu.

LIST

Edit Recall Disable

> Recall LIST Mode

If several List files are edited, you can recall the List file to be tested by Recall.

When LIST is in Enable status, exit the menu to perform test.

1. Press (Shift)+ (List)button to entry the List menu

Off

0.0V 0.0mA 50.0

0.00W PF=0.000 0.0S

2. Press right key to select Recall, when it flickers, press to

confirm.

LIST

Edit Recall Disable

3. Press the file number to recall the assigned file. Press to

confirm. when recall successfully, the VFD will display ”Recall data

success!”.

RECALL LIST

Recall List=0

4. Return to Previous Menu and press to exit menu.

LIST

Edit Recall Disable

5. After recall, please enable the LIST state, then quit the menu and

press ON/OFF to trigger the execution.

3.10.3 Dimmer

The leading and lagging edge of the waveform can by concealed and the

phase angle set with Dimmer function to regulate the active power, thus

adjusting the lighting intensity.

8

Enter

8

Enter

Function and Features

Dimmer of leading edge

Dimmer of lagging edge

> Active dimmer function, set LeadingEdge /LaggingEdge

1. Press multiple keys (Shift)+ (Menu)to menu

Off

0.0V 0.0mA 50.0

0.00W PF=0.000 0.0S

2. Press right arrow key to select “ Config”, press to confirm

when “Config” is shining

MENU

System Config Info

3. Press right arrow key to “Dimmer” press to confirm when

“Dimmer” is shining.

CONFIG

Volt-Min Volt-Max >

4. Select “LeadingEdge” or “LaggingEdge” to active the function. Press

key to confirm when it is shining. Shining”*” indicate on

VFD means dimmer function is in used, conversely,”*” disappeared.

DIMMER

LeadingEdge TrailingEdge Off

5. Press to quit the menu.

DIMMER

LeadingEdge TrailingEdge Off

> Set phase angle and start test

1. Press compound key (Shift)+ (*Dimmer) and enter menu

operation

Off *

0.0V 0.0mA 50.0

Enter

9

Function and Features

0.00W PF=0.000 0.0S

2. Press numeric key to set angle, press to confirm. Also you

can adjust angle by knob to view real-time waveform changes along.

Off *

0.0V 0.0mA 50.0

Dimmer=30.0° 0.1S

3. Press and numeric key to set voltage based on

requirement. Press to confirm.

Off *

0.0V 0.0mA 50.0

0.00W PF=0.000 0.0S

4. Confirm that both List and Sweep are in Disable status (VFD

appears no words of List or Sweep). Press to turn on Output.

The power supply starts outputting phase dimmer wave, and the “*”

on VFD flicks. Press again to stop output.

Off *

0.0V 0.0mA 50.0

0.00W PF=0.000 0.0S

3.11 Output Range

IT7300 series AC source will allow switchover between High range and Auto

range. Take IT7321 as example, the voltage, current and apparent power at the

High range is 300V/1.5A/300VA; the voltage, current and apparent power at the

Low range is 150V/3A/300VA. Auto range refers to auto switchover mode

between High range and Low range.

You can choose the range according to actual test requirements. When Auto

range is chosen, the switchover between High range and Low range will be

performed by the instrument automatically, thus sparing complicated operations

such as manual setting.

Switch High range and Auto range:

Press (Shift) and (High/Auto) together to switch between High

range and Auto range. When High range is chosen, press the (Shift) and

(High/Auto) together to switch to Auto range. The indicator “Auto” on

the VFD will be on.

Note

There is a temporary OFF to the AC source during the switchover of range.

3.12 Key Lock

The front panel keys can be locked to prevent unwanted changes to output

settings and AC source configurations. Follow the steps below to

enable/disable key lock.

Press ( (Shift)+ (Lock) button to set the key lock state. If keyboard

has been locked, the indicator light ”Lock” will display on the VFD. In addition,

when keyboard is locked, all buttons can’t be used except ON/OFF key, Shift

Enter

On/Off

Function and Features

key and Select key. Press (Shift)+ (Lock) once again will relieve

key lock function.

3.13 BNC

There is a composite terminal at the rear panel of the AC source (see

description of rear panel), which can be used as:

Input signal:

I-Trigger

Serve as input signal by external trigger. Connect the

positive and negative end of the terminal to generate a

trigger signal. To use this function, you need to set the

Trigger item under System menu to Extern (External

Trigger).

I-Ri

Serve as the control signal for On/Off. When the positive

and negative end of the terminal is in short circuit, the

status of AC source is OFF; when the circuit is open, the

status of AC source is ON.

Note: Only when the front panel and BNC are set to On at

the same time, the power supply outputs. Otherwise, the

power supply is OFF.

Output signal:

O-Sync

as synchronizing signal of alternating phase:

O-On

as status signal for On/Off. When the status of AC source

is ON, the terminal will output high level; when the status

of power supply is OFF, the terminal will output low level

Before using BNC terminal, you need to define its function firstly by following

steps below:

1. Press multiple key (Shift)+ (Menu) to menu operation.

Off

0.0V 0.0mA 50.0

0.00W PF=0.000 0.0S

On/Off

OFF

0.0V 0.0mA 50.0

0.00W PF=0.000 Lock

Function and Features

2. Press right arrow key and select “config”, press key when

“Config” is shining.

MENU

System Config Info

3. Press right arrow key to BNC-Set and press key when

“BNC-Set” is shining.

CONFIG

V-Min V-Max >

4. Press left and right arrow keys to select interface function and press

. Press ESC key to exit menu.

BNC PORT SETUP

I-Trigger I-Ri O-Sync O-On >

3.14 3ø-Setup

IT7322/IT7322H/IT7324/IT7324H/IT7326/IT7326H supports 3-phase output via

three units. The three units need to be connected together via SYSTEM BUS to

achieve 3-phase output function of AC power supply.

The IT7322T, IT7322HT, IT7324T, IT7324HT, IT7326T and IT7326HT can

output the three-phase AC power source and are assembled by three

single-phase instruments. Furthermore, the three single-phase instruments of

the three-phase power supply are set to Phase A, Phase B and Phase C

before shipment. Therefore, the following operations don’t apply to the

three-phase power supplies.

NOTE

After being assembled into three-phase, the List and Sweep functions

will not be available.

Take IT7324 as example for description. 3-phase output includes two

connection types of “Y” or “Delta”.

⚫ Y type connection:

Enter

Function and Features

⚫ Delta connection:

SYSTEM BUS: User need to connect three units together via a straight network

cable. Please see figure above.

Select one connection method as shown above. After wiring, set 3 power

supplies to Phase A, Phase B and Phase C respectively. Phase A power supply

will automatically search for Phase B and Phase C power supplies. Detailed

operation steps are shown below:

Set Phase A

1. Press (Shift)+ (Menu)to enter the menu operation.

2. Press right-key to select CONFIG, then press button to

confirm.

3. Press left and right arrow keys to select 3ø-Setup. Press to

enter configuration of 3-phase AC power supply function. Interface

displays as below:

Two parameters need to be set from the menu to enable this function:

A-Phase/ B-Phase / C-Phase Configure the phase line of each unit

Disable/Enable Turn on or turn off 3-phase function

Press right key to select item to be set and press Up/Down key to select.

4. After setting of Phase A, press [Esc] to return to the Main Interface,

which displays as follows:

Enter

OFF

3ø-Setup

A-Phase Disable

OFF Auto

0.0V 0.0mA 50.0

0.00W 3ø-B,C Loss 3ø-A

Function and Features

Set Phase B/C

Follow same setting steps 1-3 of Phase A to set Phase B/C. After setting of

Phase B/C, press [Esc] to return to the Main Interface. Take Main Interface of

Phase B as example, as shown below.

After setting of Phases B and C, the main interface of Phase A power supply

displays as follows:

Note

When you operate the instrument which is set to Phase A, the other two instruments will

execute the same operation.

OFF Auto

0.0V 0.0mA 50.0

0.00W PF=0.000 3ø-B

OFF Auto

0.0V 0.0mA 50.0

0.00W 3ø-B,C Loss 3ø-A

Specification

Chapter4 Specification

This chapter will introduce the main technical parameters of IT7300, such as

rated voltage/current/power and so on. Besides, this part will introduce the

working environment and storage temperature.

4.1 Specification

Model

IT7321

INPUT

Phase

1

Voltage

220Vac±10% or 110Vac±10%

Frequency

47-63Hz

Max.Current

6.3A(220Vac) or 10A(110Vac)

Power Factor

0.5(typical)

AC OUTPUT

Max.Power

300VA

Max Current(rms)

0-150V

3A

0-300V

1.5A

Max Current(peak)

0-150V

9A

0-300V

4.5A

Phase

1Φ/2W

Total Harmonic Distortion(T.H.D)

≤0.5% at 45-500Hz (Resistive Load)

Crest Factor

3

Line Regulation

0.1% max for a ±10% line change

Load Regulation

≤0.5%FS(Resistive Load)

Response Time

<100uS

SETTING

Voltage

Range

0-300V High, 150/300V Auto

Resolution

0.1V

Accuracy

±(0.2%+0.6V)

Temp. coefficient

±(0.04% per degree from 25℃)

Frequency

Range

45-500Hz

Resolution

0.1Hz at 45-99.9Hz 1Hz at 100-500Hz

Accuracy

0.1Hz

Phase Angle

Range

0-360°

Resolution

0.1°

Accuracy

±1°(45-65Hz)

MEASUREMENT

Voltage(rms)

Range

0-300V

Specification

Resolution

0.1V

Accuracy

±(0.2%+0.6V)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(rms)

Range

L:120.0mA *

M:1.200A *

H:3.00A *

Resolution

L:0.1mA

M:1mA

H:10mA

Accuracy

L:±(0.2%+0.6mA)

M:±(0.2%+6mA)

H:±(0.2%+40mA)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(peak)

Range

0-12A

Resolution

0.01A

Accuracy

±(1%+0.36A)

Temp. coefficient

±(0.05% per degree from 25℃)

Power

Resolution

L:0.01W

M:0.1W

H:1W

Accuracy

L:±(0.2%+0.2W) (47HZ-65HZ)

M:±(0.2%+2W) (47HZ-65HZ)

H:±(0.2%+4W) (47HZ-65HZ)

Temp. coefficient

±(0.05% per degree from 25℃)

GENERAL

Memory

10 memories

Sync Output Signal

Output Signal 5V,BNC type

Interface(Option)

LAN,USB,RS232

Operation Environment

0-40℃/20-80%RH

Dimension

1/2 19" 2U

Weight

10Kg

Model

IT7322

INPUT

Phase

1

Voltage

220Vac±10% or 110Vac±10%

Frequency

47-63Hz

Max.Current

15A(220Vac) or 30A(110Vac)

Power Factor

0.7(typical)

AC OUTPUT

Max.Power

750VA

Specification

Max Current(rms)

0-150V

6A

0-300V

3A

Max Current(peak)

0-150V

18A

0-300V

9A

Phase

1Φ/2W

Total Harmonic Distortion(T.H.D)

≤0.5% at 45-500Hz (Resistive Load)

Crest Factor

3

Line Regulation

0.1% max for a ±10% line change

Load Regulation

≤0.5%FS(Resistive Load)

Response Time

<100uS

SETTING

Voltage

Range

0-300V High, 150/300V Auto

Resolution

0.1V

Accuracy

±(0.2%+0.6V)

Temp. coefficient

±(0.04% per degree from 25℃)

Frequency

Range

45-500Hz

Resolution

0.1Hz at 45-99.9Hz 1Hz at 100-500Hz

Accuracy

0.1Hz

Phase Angle

Range

0-360°

Resolution

0.1°

Accuracy

±1°(45-65Hz)

MEASUREMENT

Voltage(rms)

Range

0-300V

Resolution

0.1V

Accuracy

±(0.2%+0.6V)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(rms)

Range

L:120.0mA *

M:1.200A *

H:6.00A *

Resolution

L:0.1mA

M:1mA

H:10mA

Accuracy

L:±(0.2%+0.6mA)

M:±(0.2%+6mA)

H:±(0.2%+60mA)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(peak)

Range

0-18A

Resolution

0.01A

Accuracy

±(1%+0.36A)

Temp. coefficient

±(0.05% per degree from 25℃)

Power

Resolution

L:0.01W

M:0.1W

H:1W

Accuracy

L:±(0.2%+0.2W) (47HZ-65HZ)

Specification

M:±(0.2%+2W) (47HZ-65HZ)

H:±(0.2%+6W) (47HZ-65HZ)

Temp. coefficient

±(0.05% per degree from 25℃)

GENERAL

Memory

10 memories

Sync Output Signal

Output Signal 5V,BNC type

Interface(Option)

LAN,USB,RS232,GPIB

Operation Environment

0-40℃/20-80%RH

Dimension

19" 3U

Weight

37Kg

Model

IT7322H

INPUT

Phase

1

Voltage

220Vac±10% or 110Vac±10%

Frequency

47-63Hz

Max.Current

20A(220Vac) or 40A(110Vac)

Power Factor

0.7(typical)

AC OUTPUT

Max.Power

750VA

Max Current(rms)

0-250V

3A

0-500V

1.5A

Max Current(peak)

0-250V

9A

0-500V

4.5A

Phase

1Φ/3W

Total Harmonic Distortion(T.H.D)

≤1% at 45-500Hz (Resistive Load)

Crest Factor

≤3

Line Regulation

0.1% max for a ±10% line change

Load Regulation

≤0.5%FS(Resistive Load)

Response Time

<100uS

SETTING

Voltage

Range

0-500V High, 250/500V Auto

Resolution

0.1V

Accuracy

±(0.2%+1.2V)

Temp. coefficient

±(0.04% per degree from 25℃)

Frequency

Range

45-500Hz

Resolution

0.1Hz at 45-99.9Hz 1Hz at 100-500Hz

Accuracy

0.1Hz

Phase Angle

Range

0-360°

Resolution

0.1°

Specification

Accuracy

±1°(45-65Hz)

MEASUREMENT

Voltage(rms)

Range

0-500V

Resolution

0.1V

Accuracy

±(0.2%+1.2V)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(rms)

Range

L:120.0mA *

M:1.200A *

H:3.00A *

Resolution

L:0.1mA

M:1mA

H:10mA

Accuracy

L:±(0.2%+0.6mA)

M:±(0.2%+6mA)

H:±(0.2%+40mA)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(peak)

Range

0-9A

Resolution

0.01A

Accuracy

±(1%+0.36A)

Temp. coefficient

±(0.05% per degree from 25℃)

Power

Resolution

L:0.01W

M:0.1W

H:1W

Accuracy

L:±(0.2%+0.2W) (47HZ-65HZ)

M:±(0.2%+2W) (47HZ-65HZ)

H:±(0.2%+6W) (47HZ-65HZ)

Temp. coefficient

±(0.05% per degree from 25℃)

GENERAL

Memory

10 memories

Sync Output Signal

Output Signal 5V,BNC type

Interface(Option)

LAN,USB,RS232,GPIB

Operation Environment

0-40℃/20-80%RH

Dimension

19" 3U

Weight

37Kg

Model

IT7324

INPUT

Phase

1

Voltage

220Vac±10% or 110Vac±10%

Frequency

47-63Hz

Max.Current

30A(220Vac) or 60A(110Vac)

Specification

Power Factor

0.7(typical)

AC OUTPUT

Max.Power

1500VA

Max Current(rms)

0-150V

12A

0-300V

6A

Max Current(peak)

0-150V

36A

0-300V

18A

Phase

1Φ/2W

Total Harmonic Distortion(T.H.D)

≤0.5% at 45-500Hz (Resistive Load)

Crest Factor

3

Line Regulation

0.1% max for a ±10% line change

Load Regulation

≤0.5%FS(Resistive Load)

Response Time

<100uS

SETTING

Voltage

Range

0-300V High, 150/300V Auto

Resolution

0.1V

Accuracy

±(0.2%+0.6V)

Temp. coefficient

±(0.04% per degree from 25℃)

Frequency

Range

45-500Hz

Resolution

0.1Hz at 45-99.9Hz 1Hz at 100-500Hz

Accuracy

0.1Hz

Phase Angle

Range

0-360°

Resolution

0.1°

Accuracy

±1°(45-65Hz)

MEASUREMENT

Voltage(rms)

Range

0-300V

Resolution

0.1V

Accuracy

±(0.2%+0.6V)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(rms)

Range

L:120.0mA *

M:1.200A *

H:12.00A *

Resolution

L:0.1mA

M:1mA

H:10mA

Accuracy

L:±(0.2%+0.6mA)

M:±(0.2%+6mA)

H:±(0.2%+80mA)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(peak)

Range

0-48A

Resolution

0.01A

Accuracy

±(1%+0.36A)

Specification

Temp. coefficient

±(0.05% per degree from 25℃)

Power

Resolution

L:0.01W

M:0.1W

H:1W

Accuracy

L:±(0.2%+0.2W) (47HZ-65HZ)

M:±(0.2%+2W) (47HZ-65HZ)

H:±(0.2%+10W) (47HZ-65HZ)

Temp. coefficient

±(0.05% per degree from 25℃)

GENERAL

Memory

10 memories

Sync Output Signal

Output Signal 5V,BNC type

Interface(Option)

LAN,USB,RS232,GPIB

Operation Environment

0-40℃/20-80%RH

Dimension

19" 3U

Weight

48Kg

Model

IT7324H

INPUT

Phase

1

Voltage

220Vac±10% or 110Vac±10%

Frequency

47-63Hz

Max.Current

30A(220Vac) or 60A(110Vac)

Power Factor

0.7(typical)

AC OUTPUT

Max.Power

1500VA

Max Current(rms)

0-250V

6A

0-500V

3A

Max Current(peak)

0-250V

18A

0-500V

9A

Phase

1Φ/2W

Total Harmonic Distortion(T.H.D)

≤1% at 45-500Hz (Resistive Load)

Crest Factor

3

Line Regulation

0.1% max for a ±10% line change

Load Regulation

≤0.5%FS(Resistive Load)

Response Time

<100uS

SETTING

Voltage

Range

0-500V High, 250/500V Auto

Resolution

0.1V

Accuracy

±(0.2%+1.2V)

Specification

Temp. coefficient

±(0.04% per degree from 25℃)

Frequency

Range

45-500Hz

Resolution

0.1Hz at 45-99.9Hz 1Hz at 100-500Hz

Accuracy

0.1Hz

Phase Angle

Range

0-360°

Resolution

0.1°

Accuracy

±1°(45-65Hz)

MEASUREMENT

Voltage(rms)

Range

0-500V

Resolution

0.1V

Accuracy

±(0.2%+1.2V)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(rms)

Range

L:120.0mA *

M:1.200A *

H:6.00A *

Resolution

L:0.1mA

M:1mA

H:10mA

Accuracy

L:±(0.2%+0.6mA)

M:±(0.2%+6mA)

H:±(0.2%+60mA)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(peak)

Range

0-24A

Resolution

0.01A

Accuracy

±(1%+0.36A)

Temp. coefficient

±(0.05% per degree from 25℃)

Power

Resolution

L:0.01W

M:0.1W

H:1W

Accuracy

L:±(0.2%+0.2W) (47HZ-65HZ)

M:±(0.2%+2W) (47HZ-65HZ)

H:±(0.2%+10W) (47HZ-65HZ)

Temp. coefficient

±(0.05% per degree from 25℃)

GENERAL

Memory

10 memories

Sync Output Signal

Output Signal 5V,BNC type

Interface(Option)

LAN,USB,RS232,GPIB

Operation Environment

0-40℃/20-80%RH

Dimension

19" 3U

Weight

37Kg

Model

IT7326

INPUT

Specification

Phase

1

Voltage

220Vac±10%

Frequency

47-63Hz

Max.Current

60A

Power Factor

0.7(typical)

AC OUTPUT

Max.Power

3000VA

Max Current(rms)

0-150V

24A

0-300V

12A

Max Current(peak)

0-150V

72A

0-300V

36A

Phase

1Φ/2W

Total Harmonic Distortion(T.H.D)

≤0.5% at 45-500Hz (Resistive Load)

Crest Factor

3

Line Regulation

0.1% max for a ±10% line change

Load Regulation

≤0.5%FS(Resistive Load)

Response Time

<100uS

SETTING

Voltage

Range

0-300V High, 150/300V Auto

Resolution

0.1V

Accuracy

±(0.2%+0.6V)

Temp. coefficient

±(0.04% per degree from 25℃)

Frequency

Range

45-500Hz

Resolution

0.1Hz at 45-99.9Hz 1Hz at 100-500Hz

Accuracy

0.1Hz

Phase Angle

Range

0-360°

Resolution

0.1°

Accuracy

±1°(45-65Hz)

MEASUREMENT

Voltage(rms)

Range

0-300V

Resolution

0.1V

Accuracy

±(0.2%+0.6V)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(rms)

Range

L:120.0mA *

M:1.200A *

H:24.00A *

Resolution

L:0.1mA

M:1mA

H:10mA

Accuracy

L:±(0.2%+0.6mA)

M:±(0.2%+6mA)

H:±(0.2%+0.1A)

Temp. coefficient

±(0.04% per degree from 25℃)

Specification

Current(peak)

Range

0-96A

Resolution

0.01A

Accuracy

±(1%+0.36A)

Temp. coefficient

±(0.05% per degree from 25℃)

Power

Resolution

L:0.01W

M:0.1W

H:1W

Accuracy

L:±(0.2%+0.2W) (47HZ-65HZ)

M:±(0.2%+2W) (47HZ-65HZ)

H:±(0.2%+15W) (47HZ-65HZ)

Temp. coefficient

±(0.05% per degree from 25℃)

GENERAL

Memory

10 memories

Sync Output Signal

Output Signal 5V,BNC type

Interface(Option)

LAN,USB,RS232,GPIB

Operation Environment

0-40℃/20-80%RH

Dimension

19" 6U

Weight

103Kg

Model

IT7326H

INPUT

Phase

1

Voltage

220Vac±10%

Frequency

47-63Hz

Max.Current

60A

Power Factor

0.7(typical)

AC OUTPUT

Max.Power

3000VA

Max Current(rms)

0-250V

12A

0-500V

6A

Max Current(peak)

0-250V

36A

0-500V

18A

Phase

1Φ/2W

Total Harmonic Distortion(T.H.D)

≤1% at 45-500Hz (Resistive Load)

Crest Factor

3

Line Regulation

0.1% max for a ±10% line change

Load Regulation

≤0.5%FS(Resistive Load)

Response Time

<100uS

Specification

SETTING

Voltage

Range

0-500V High, 250/500V Auto

Resolution

0.1V

Accuracy

±(0.2%+1.2V)

Temp. coefficient

±(0.04% per degree from 25℃)

Frequency

Range

45-500Hz

Resolution

0.1Hz at 45-99.9Hz 1Hz at 100-500Hz

Accuracy

0.1Hz

Phase Angle

Range

0-360°

Resolution

0.1°

Accuracy

±1°(45-65Hz)

MEASUREMENT

Voltage(rms)

Range

0-500V

Resolution

0.1V

Accuracy

±(0.2%+1.2V)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(rms)

Range

L:120.0mA *

M:1.200A *

H:12.00A *

Resolution

L:0.1mA

M:1mA

H:10mA

Accuracy

L:±(0.2%+0.6mA)

M:±(0.2%+6mA)

H:±(0.2%+60mA)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(peak)

Range

0-48A

Resolution

0.01A

Accuracy

±(1%+0.36A)

Temp. coefficient

±(0.05% per degree from 25℃)

Power

Resolution

L:0.01W

M:0.1W

H:1W

Accuracy

L:±(0.2%+0.2W) (47HZ-65HZ)

M:±(0.2%+2W) (47HZ-65HZ)

H:±(0.2%+10W) (47HZ-65HZ)

Temp. coefficient

±(0.05% per degree from 25℃)

GENERAL

Memory

10 memories

Sync Output Signal

Output Signal 5V,BNC type

Interface(Option)

LAN,USB,RS232,GPIB

Operation Environment

0-40℃/20-80%RH

Dimension

19" 6U

Weight

103Kg

Specification

Model

IT7322T

INPUT

Phase

3

Voltage

380Vac±10%(Y)

Frequency

47-63Hz

Max.Current

15A

Power Factor

0.7(typical)

AC OUTPUT

Max.Power

2250VA

Max Current(rms)

0-150V

6A

0-300V

3A

Max Current(peak)

0-150V

18A

0-300V

9A

Phase

3φ

Total Harmonic Distortion(T.H.D)

≤0.5% at 45-500Hz (Resistive Load)

Crest Factor

3

Line Regulation

0.1% max for a ±10% line change

Load Regulation

≤0.5%FS(Resistive Load)

Response Time

<100uS

SETTING

Voltage

Range

0-300V High, 150/300V Auto

Resolution

0.1V

Accuracy

±(0.2%+0.6V)

Temp. coefficient

±(0.04% per degree from 25℃)

Frequency

Range

45-500Hz

Resolution

0.1Hz at 45-99.9Hz 1Hz at 100-500Hz

Accuracy

0.1Hz

MEASUREMENT

Voltage(rms)

Range

0-300V

Resolution

0.1V

Accuracy

±(0.2%+0.6V)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(rms)

Range

L:120.0mA *

M:1.200A *

H:6.00A *

Resolution

L:0.1mA

M:1mA

H:10mA

Accuracy

L:±(0.2%+0.6mA)

M:±(0.2%+6mA)

Specification

H:±(0.2%+0.1A)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(peak)

Range

0-18A

Resolution

0.01A

Accuracy

±(1%+0.36A)

Temp. coefficient

±(0.05% per degree from 25℃)

Power

Resolution

L:0.01W

M:0.1W

H:1W

Accuracy

L:±(0.2%+0.2W) (47HZ-65HZ)

M:±(0.2%+2W) (47HZ-65HZ)

H:±(0.2%+15W) (47HZ-65HZ)

Temp. coefficient

±(0.05% per degree from 25℃)

GENERAL

Memory

10 memories

Sync Output Signal

Output Signal 5V,BNC type

Interface(Option)

LAN,USB,RS232,GPIB

Operation Environment

0-40℃/20-80%RH

Dimension

15U

Weight

150Kg

Model

IT7322HT

INPUT

Phase

3

Voltage

380Vac±10%(Y)

Frequency

47-63Hz

Max.Current

15A

Power Factor

0.7(typical)

AC OUTPUT

Max.Power

2250VA

Max Current(rms)

0-250V

3A

0-500V

1.5A

Max Current(peak)

0-250V

9A

0-500V

4.5A

Phase

3φ

Total Harmonic Distortion(T.H.D)

≤1% at 45-500Hz (Resistive Load)

Crest Factor

3

Line Regulation

0.1% max for a ±10% line change

Load Regulation

≤0.5%FS(Resistive Load)

Specification

Response Time

<100uS

SETTING

Voltage

Range

0-500V High, 250/500V Auto

Resolution

0.1V

Accuracy

±(0.2%+1.2V)

Temp. coefficient

±(0.04% per degree from 25℃)

Frequency

Range

45-500Hz

Resolution

0.1Hz at 45-99.9Hz 1Hz at 100-500Hz

Accuracy

0.1Hz

MEASUREMENT

Voltage(rms)

Range

0-500V

Resolution

0.1V

Accuracy

±(0.2%+1.2V)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(rms)

Range

L:120.0mA *

M:1.200A *

H:3.00A *

Resolution

L:0.1mA

M:1mA

H:10mA

Accuracy

L:±(0.2%+0.6mA)

M:±(0.2%+6mA)

H:±(0.2%+60mA)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(peak)

Range

0-9A

Resolution

0.01A

Accuracy

±(1%+0.36A)

Temp. coefficient

±(0.05% per degree from 25℃)

Power

Resolution

L:0.01W

M:0.1W

H:1W

Accuracy

L:±(0.2%+0.2W) (47HZ-65HZ)

M:±(0.2%+2W) (47HZ-65HZ)

H:±(0.2%+10W) (47HZ-65HZ)

Temp. coefficient

±(0.05% per degree from 25℃)

GENERAL

Memory

10 memories

Sync Output Signal

Output Signal 5V,BNC type

Interface(Option)

LAN,USB,RS232,GPIB

Operation Environment

0-40℃/20-80%RH

Dimension

15U

Weight

150Kg

Specification

Model

IT7324T

INPUT

Phase

3

Voltage

380Vac±10%(Y)

Frequency

47-63Hz

Max.Current

30A

Power Factor

0.7(typical)

AC OUTPUT

Max.Power

4500VA

Max Current(rms)

0-150V

12A

0-300V

6A

Max Current(peak)

0-150V

36A

0-300V

18A

Phase

3φ

Total Harmonic Distortion(T.H.D)

≤0.5% at 45-500Hz (Resistive Load)

Crest Factor

3

Line Regulation

0.1% max for a ±10% line change

Load Regulation

≤0.5%FS(Resistive Load)

Response Time

<100uS

SETTING

Voltage

Range

0-300V High, 150/300V Auto

Resolution

0.1V

Accuracy

±(0.2%+0.6V)

Temp. coefficient

±(0.04% per degree from 25℃)

Frequency

Range

45-500Hz

Resolution

0.1Hz at 45-99.9Hz 1Hz at 100-500Hz

Accuracy

0.1Hz

MEASUREMENT

Voltage(rms)

Range

0-300V

Resolution

0.1V

Accuracy

±(0.2%+0.6V)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(rms)

Range

L:120.0mA *

M:1.200A *

H:12.00A *

Resolution

L:0.1mA

M:1mA

H:10mA

Accuracy

L:±(0.2%+0.6mA)

M:±(0.2%+6mA)

H:±(0.2%+0.1A)

Specification

Temp. coefficient

±(0.04% per degree from 25℃)

Current(peak)

Range

0-36A

Resolution

0.01A

Accuracy

±(1%+0.36A)

Temp. coefficient

±(0.05% per degree from 25℃)

Power

Resolution

L:0.01W

M:0.1W

H:1W

Accuracy

L:±(0.2%+0.2W) (47HZ-65HZ)

M:±(0.2%+2W) (47HZ-65HZ)

H:±(0.2%+15W) (47HZ-65HZ)

Temp. coefficient

±(0.05% per degree from 25℃)

GENERAL

Memory

10 memories

Sync Output Signal

Output Signal 5V,BNC type

Interface(Option)

LAN,USB,RS232,GPIB

Operation Environment

0-40℃/20-80%RH

Dimension

24U

Weight

250Kg

Model

IT7324HT

INPUT

Phase

3

Voltage

380Vac±10%(Y)

Frequency

47-63Hz

Max.Current

30A

Power Factor

0.7(typical)

AC OUTPUT

Max.Power

4500VA

Max Current(rms)

0-250V

6A

0-500V

3A

Max Current(peak)

0-250V

18A

0-500V

9A

Phase

3φ

Total Harmonic Distortion(T.H.D)

≤1% at 45-500Hz (Resistive Load)

Crest Factor

3

Line Regulation

0.1% max for a ±10% line change

Load Regulation

≤0.5%FS(Resistive Load)

Specification

Response Time

<100uS

SETTING

Voltage

Range

0-500V High, 250/500V Auto

Resolution

0.1V

Accuracy

±(0.2%+1.2V)

Temp. coefficient

±(0.04% per degree from 25℃)

Frequency

Range

45-500Hz

Resolution

0.1Hz at 45-99.9Hz 1Hz at 100-500Hz

Accuracy

0.1Hz

MEASUREMENT

Voltage(rms)

Range

0-500V

Resolution

0.1V

Accuracy

±(0.2%+1.2V)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(rms)

Range

L:120.0mA *

M:1.200A *

H:6.00A *

Resolution

L:0.1mA

M:1mA

H:10mA

Accuracy

L:±(0.2%+0.6mA)

M:±(0.2%+6mA)

H:±(0.2%+60mA)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(peak)

Range

0-18A

Resolution

0.01A

Accuracy

±(1%+0.36A)

Temp. coefficient

±(0.05% per degree from 25℃)

Power

Resolution

L:0.01W

M:0.1W

H:1W

Accuracy

L:±(0.2%+0.2W) (47HZ-65HZ)

M:±(0.2%+2W) (47HZ-65HZ)

H:±(0.2%+10W) (47HZ-65HZ)

Temp. coefficient

±(0.05% per degree from 25℃)

GENERAL

Memory

10 memories

Sync Output Signal

Output Signal 5V,BNC type

Interface(Option)

LAN,USB,RS232,GPIB

Operation Environment

0-40℃/20-80%RH

Dimension

24U

Weight

250Kg

Specification

Model

IT7326T

INPUT

Phase

3

Voltage

380Vac±10%(Y)

Frequency

47-63Hz

Max.Current

60A

Power Factor

0.7(typical)

AC OUTPUT

Max.Power

9000VA

Max Current(rms)

0-150V

24A

0-300V

12A

Max Current(peak)

0-150V

72A

0-300V

36A

Phase

3φ

Total Harmonic Distortion(T.H.D)

≤0.5% at 45-500Hz (Resistive Load)

Crest Factor

3

Line Regulation

0.1% max for a ±10% line change

Load Regulation

≤0.5%FS(Resistive Load)

Response Time

<100uS

SETTING

Voltage

Range

0-300V High, 150/300V Auto

Resolution

0.1V

Accuracy

±(0.2%+0.6V)

Temp. coefficient

±(0.04% per degree from 25℃)

Frequency

Range

45-500Hz

Resolution

0.1Hz at 45-99.9Hz 1Hz at 100-500Hz

Accuracy

0.1Hz

MEASUREMENT

Voltage(rms)

Range

0-300V

Resolution

0.1V

Accuracy

±(0.2%+0.6V)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(rms)

Range

L:120.0mA *

M:1.200A *

H:24.00A *

Resolution

L:0.1mA

M:1mA

H:10mA

Accuracy

L:±(0.2%+0.6mA)

M:±(0.2%+6mA)

H:±(0.2%+0.1A)

Specification

Temp. coefficient

±(0.04% per degree from 25℃)

Current(peak)

Range

0-72A

Resolution

0.01A

Accuracy

±(1%+0.36A)

Temp. coefficient

±(0.05% per degree from 25℃)

Power

Resolution

L:0.01W

M:0.1W

H:1W

Accuracy

L:±(0.2%+0.2W) (47HZ-65HZ)

M:±(0.2%+2W) (47HZ-65HZ)

H:±(0.2%+15W) (47HZ-65HZ)

Temp. coefficient

±(0.05% per degree from 25℃)

GENERAL

Memory

10 memories

Sync Output Signal

Output Signal 5V,BNC type

Interface(Option)

LAN,USB,RS232,GPIB

Operation Environment

0-40℃/20-80%RH

Dimension

24U

Weight

400Kg

Model

IT7326HT

INPUT

Phase

3

Voltage

380Vac±10%(Y)

Frequency

47-63Hz

Max.Current

60A

Power Factor

0.7(typical)

AC OUTPUT

Max.Power

9000VA

Max Current(rms)

0-250V

12A

0-500V

6A

Max Current(peak)

0-250V

36A

0-500V

18A

Phase

3φ

Total Harmonic Distortion(T.H.D)

≤1% at 45-500Hz (Resistive Load)

Crest Factor

3

Line Regulation

0.1% max for a ±10% line change

Load Regulation

≤0.5%FS(Resistive Load)

Specification

Response Time

<100uS

SETTING

Voltage

Range

0-500V High, 250/500V Auto

Resolution

0.1V

Accuracy

±(0.2%+1.2V)

Temp. coefficient

±(0.04% per degree from 25℃)

Frequency

Range

45-500Hz

Resolution

0.1Hz at 45-99.9Hz 1Hz at 100-500Hz

Accuracy

0.1Hz

MEASUREMENT

Voltage(rms)

Range

0-500V

Resolution

0.1V

Accuracy

±(0.2%+0.6V)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(rms)

Range

L:120.0mA *

M:1.200A *

H:12.00A *

Resolution

L:0.1mA

M:1mA

H:10mA

Accuracy

L:±(0.2%+0.6mA)

M:±(0.2%+6mA)

H:±(0.2%+0.1A)

Temp. coefficient

±(0.04% per degree from 25℃)

Current(peak)

Range

0-36A

Resolution

0.01A

Accuracy

±(1%+0.36A)

Temp. coefficient

±(0.05% per degree from 25℃)

Power

Resolution

L:0.01W

M:0.1W

H:1W

Accuracy

L:±(0.2%+0.2W) (47HZ-65HZ)

M:±(0.2%+2W) (47HZ-65HZ)

H:±(0.2%+15W) (47HZ-65HZ)

Temp. coefficient

±(0.05% per degree from 25℃)

GENERAL

Memory

10 memories

Sync Output Signal

Output Signal 5V,BNC type

Interface(Option)

LAN,USB,RS232,GPIB

Operation Environment

0-40℃/20-80%RH

Dimension

24U

Weight

400Kg

*Description about the switch of current range:

Specification

When Ipeak > 300% (Full rms), the current switch from low range to high range (L to M, M to H).

When Ipeak < 20% (Full rms), the current switch from high range to low range (M to L).

When Ipeak < 80% (3Arms), the current switch from high range to Middle range (H to M).

The above specifications may be subject to change without prior notice.

4.2 Supplemental Characteristics

⚫ State storage capacity

10sets

⚫ Recommended calibration frequency

once a year

⚫ Cooling style

fans

Remote Control

Chapter5 Remote Control

IT7300 series AC source (except IT7321) has four standard

communication interfaces: LAN RS232, USB, and GPIB. IT7321 has

standard communication interface: LAN/USB/RS232. You can choose

any one of them to communicate with PC.

5.1 RS232 Interface

There is a DB9 connector at the rear of the power supply, when connect to

computer, you need to select a cable with COM port on both side; To active you

need to press (Shift)+ (Menu) button to enable the settings in menu to

be the same with the PC communication configuration. You could do the

secondary development with all SCPI commands.

Note

The RS232 settings must match the settings in front panel system information.

If any change, please press (Shift) + (Menu) key to modify the

menu: SYST SET\COMM.

RS232 data format

RS232 data is a 10-bit word with one start bit and one stop bit. The number of

start bit is not programmable. Stop bit is selectable between 1&2.Besides, you

can set the parity bit in the menu using the front panel (Shift) + key.

Parity options are stored in a non-volatile memory.

Baudrate

The front panel (Shift) + (Menu) button allows the user to set

baud rate which is stored in the non-volatile memory: 4800,9600,19200

38400, 57600,115200

RS-232 connection

Adopt the RS232 cable with DB-9 interface because the serial port of RS232

can be connected with that of the controller (e.g. PC). The modulating cable of

the air-conditioner is not recommended. The pins of plug are shown as the

following table.

If your computer is provided with a RS232 interface with DB-25 plug, a cable

and an adapter with DB-25 plug (one end) and DB-9 plug (the other end) are

required (not the modulating cable of the air-conditioner)

RS-232 plug pins

Pin number

Description

1

No connection

2

TXD, transfer data

3

RXD, receive data

4

No connection

5

GND, ground

6

No connection

7

CTS, clear transfer

Remote Control

8

RTS, ready to transfer

9

No connection

RS-232 Troubleshooting

In case of connection failure of RS232, perform following check:

⚫ Check if the computer and power supply are provided with same

Baud rate, parity check bit, data bit and flow control. The power

supply shall be configured with one start bit (fixed) and one or two

stop bits.

⚫ Just as described in the RS232 connector, appropriate interface

cable or adapter shall be adopted. Notes: even if the cable is

equipped with right plug, internal wiring may be incorrect.

⚫ The interface cable must be connected to the right serial port (COM1

and COM2) of the computer.

Communication Setup

Please ensure the PC and power supply has the same configuration in the

following items.

Baudrate: 9600(4800, 9600, 19200, 38400, 57600, 115200). You could enter

the system menu to set the baudrate.

Data bit: 8

Stop bit: 1

Parity bit: (none, even, odd)

EVEN 8 data bits have even parity

ODD 8 data bits have odd parity

NONE 8 data bits have no parity

Native machine address: (0 ~31, factory default is 0)

Start Bit

8 Data Bits

Parity=None

Stop Bit

5.2 USB Interface

Use a cable with two USB ports to connect power supply and PC. You can

program through USB interface to achieve all functions of power supply.

The functions of USB488 interface are as follows:

⚫ Interface is 488.2 USB488 interface

⚫ Receive the following request: REN_CONTROL, GO_TO_LOCAL, and

LOCAL_LOCKOUT

⚫ When the interface receives MsgID = TRIGGER USBTMC command, it will

transmit the TRIGGER command to the function layer.

The functions of power supply’s USB488 are as follows:

⚫ receive all SCPI commands

⚫ device is SR1 enabled

⚫ device is RL1 enabled

⚫ device is DT1 enabled

Remote Control

5.3 LAN Interface

Press (Shift) + (Menu) on the front panel together to access the

menu. Select LAN in the Communication from System and then configure

Gateway, IP, Mask and SocketPort in the LAN option.

Connect the LAN interface of power supply to the computer with a reticle

(crossed).

5.4 GPIB Interface

Use a IEEE488 bus to connect GPIB interfaces of power supply and PC.

Please ensure that the screws have been screwed down in order to have a full

connection. Then press + (Menu) to enter the system menu, and

then select the Communication to set the GPIB address. The address range of

power supply is 0 to 30. After you set the address, please press

button to confirm, GPIB address is saved in nonvolatile memory.

Appendix

Specifications of Red and Black Test Lines

ITECH provides you with optional red and black test lines, the user can choose

the company's test line for testing. For specifications of ITECH test lines and

maximum current values, refer to the table below.

Model

Specification

Cross section

Length

IT-E301/10A

10A

-

1m

IT-E301/30A

30A

6mm

2

1.2m

IT-E301/30A

30A

6mm

2

2m

IT-E301/60A

60A

20mm

2

1.5m

IT-E301/120A

120A

50mm

2

2m

IT-E301/240A

240A

70mm

2

1m

IT-E301/240A

240A

70mm

2

2m

IT-E301/360A

360A

95mm

2

2m

For maximum current of AWG copper wire, refer to table blow.

AWG

10

12

14

16

18

20

22

24

26

28

The

Maximum

current

value( A)

40

25

20

13

10

7

5

3.5

2.5

1.7

Note: AWG ( American Wire Gage), it means X wire ( marked on the wire). The

table above lists current capacity of single wire at working temperature of 30°C.

For reference only.

Contact US

Thank you for purchasing ITECH products. If you have any doubt about this product, please

contact us as follow.

1. Please refer to the CD-ROM of related user’s manual in package.

2. Visit ITECH website

www.itechate.com .

3. Select the most convenient contact for further consultation.

ITECH IT7321 150/30V 3/1.5A Programmable AC Power Supply

Product's Documents

Manual

Specifications

ITECH IT7321 Questions and Answers