Grounding Configuration - Toshiba G8000 SERIES Installation And Operation Manual

11.5

Grounding Configuration

This section describes the grounding configuration to be used with this UPS.
A 2 AwG (or 38 mm ) factory-installed jumper cable is provided between the neutral terminal and ground
2
bus in the UpS cabinet. The jumper cable location is illustrated below.
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.
Input Source
3 f
3 f
3 f
3 f
G
G
FIGURE 11.10 - GROUNDING CONFIGURATION FOR NON-GROUNDED DELTA-INPUT
36
100-150 kVA
Ground
bus
UPS Cabinet
G8000 Series with Isolated output Installation and operation manual
neutral
Terminal
Jumper
Cable
3 f
N
G
Junper Cable
remains in place
3 f
N
To
LOAD
G