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Measurement categories (Over-voltage categories)
To ensure safe operation of measuring instruments, IEC61010 establishes safety standards for various electrical
environments, specified as CAT I through CAT IV, and called measurement categories. Higher-numbered categories
correspond to electrical environments with greater momentary energy, so a measuring instrument designed for CAT III
environments can endure greater momentary energy than one designed for CAT II.
• CAT I: Secondary electrical circuits connected to an AC electrical outlet through a transformer or similar device.
• CAT II: Primary electrical circuits of equipment connected to an AC electrical outlet by a power cord.
• CAT III: Primary electrical circuits of the equipment connected directly to the distribution panel, and feeders
from the distribution panel to outlets.
• CAT IV: The circuit from the service drop to the service entrance, and to the power meter and primary over
current protection device (distribution panel).
Incoming wire
Interior wiring
CAT. III
Transformer
CAT. II
CAT. I
CAT. IV
Socket
Symbols
Caution, risk of danger, refer to the operating manual before use
Caution, risk of electric shock
AC (Alternating Current)
DC (Direct current)
AC/DC Selectable (Alternating Current/Direct Current)
Earth (ground) Terminal
The equipment is protected throughout by
double insulation or reinforced insulation
Application around and removal from hazardous
live conductors is permitted.
Conforms to Standards of European Union
Designates the product as recyclable
electronic waste per WEEE Directive
3
III. GENERAL SPECIFICATIONS
• Display: 3 1/2 digits LCD display, Maximum display 1999
• Auto Polarity Display
• Overloading: Display OL or –OL
• Low Battery Indication: Display
• Measurement Speed: Updates 3 times/second.
• Measuremnet Deviation: When theconductor being
meaured is not placed in a correct position during
AC current measurement, it will cause ±3% reading deviation.
• Drop Test: 1 meter drop test passed
• Max. Jaw Opening: 28mm diameter
• Max. Tested Current Conductor: 26mm diameter.
• Power: 9V battery
• Sleep Mode (can be disabled)
• Dimensions: 76mm x 208mm x 30mm.
• Weight: Approximate 260g (battery included)
• The Meter is suitable for indoor use.
• Altitude: Operating: 2000m
Storage: 10000m
• Safety/ Compliances: IEC 61010 CATII 600V,
CATIII 300V and Double Insulation
• Pollution degree: 2
• Temperature and humidity:
Operating: 0˚C~30˚C (≤75%R.H);
30˚C~40˚C (≤70%R.H);
40˚C~50˚C (≤45%R.H);
Storage: -20˚C~+60˚C (≤75%R.H)
DC
AC
AUTO
T
RMS
MAX
˚C˚F
A
A
A
VA
MK
Ω
m
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