Tripp Lite S3M30K-30K4T Owner's Manual

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3.14 External Battery Connections

The UPS has positive and negative double battery framework, with a total of 20 batteries in series. A neutral cable is

retrieved from the joint between the cathode of the tenth battery and the anode of the tenth battery. Then the neutral

cable, the battery positive and the battery negative are connected with the UPS respectively. The battery sets between

the battery anode and the neutral are called positive batteries, and those between neutral and cathode are called

negative batteries. Refer to section 3.9 UPS to Battery Cabinet Model Compatibility.

Notes:

• The BAT+ of the UPS connect poles is connected to the anode of the positive battery.

• The BAT-N is connected to the cathode of the positive battery and the anode of the negative battery.

• The BAT- is connected to the cathode of the negative battery.

CAUTION!

Ensure correct polarity battery string series connection, i.e. inter-tier and inter-block connections

are from (+) to (-) terminals.

Donotmixbatterieswithdierentcapacityorofdierentbrands.Donotmixnewandold

batteries.

WARNING!

Ensure correct polarity of string end connections to the battery circuit breaker and from the

battery circuit breaker to the UPS terminals, i.e. (+) to (+) / (-) to (-) / (N) to (N), but disconnect one or

more battery cell links in each tier. Do not reconnect these links and do not close the battery circuit

breaker unless authorized by the commissioning technician.

3. Installation and Wiring

Positive Battery

10 Batteries

+120Vdc

±120Vdc

(240Vdc)

Negative Battery

10 Batteries

-120Vdc

BAT+ BATN BAT-

Battery Breaker

BAT+

BAT-

BATN

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Tripp Lite S3M30K-30K4T 3-Phase 208V UPS + Input Isolation Transformer Kit - 480V Delta to 208V Wye, 30kVA/kW, External Batteries Required