11.5Grounding Configuration

This section describes the grounding configuration to be used with this UPS.

A 2 AWG (or 38 mm2) factory-installeded jumper cable is provided between the neutral terminal and ground bus in the UPS cabinet. The jumper cable location is illustrated below.

100-150 kVA

 

 

Neutral

Ground

Terminal

Bus

 

 

 

Jumper

 

 

 

 

 

 

 

 

Cable

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FIGURE 11.9 - JUMPER CABLE BETWEEN THE NEUTRAL TERMINAL & GROUND BUS

Since the input source is a delta-connection (3-phase 3-wire) without ground, the neutral terminal in the UPS cabinet must be connected to the ground bus with the internal jumper cable as shown in Figure 11.9.

The jumper cable should stay in place. See Figure 11.9 for the jumper cable location.

UPS Cabinet

Input Source

3f

3f

G

3f

3f

G

3 f

3 f

 

N

To

N

G

G

LOAD

 

 

Junper Cable

 

 

remains in place

 

FIGURE 11.10 - GROUNDING CONFIGURATION FOR NON-GROUNDED DELTA-INPUT

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G8000 Series with Isolated Output Installation and Operation Manual

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Toshiba G8000 operation manual Grounding Configuration, Jumper Cable Between the Neutral Terminal & Ground BUS