Grounding Configuration - Toshiba G8000 SERIES Installation And Operation Manual

The UPS battery cabinet and bypass breaker should be wired as shown below in Figure 11.15.
Jumper wire if battery
OH is not applied
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TB1
UPS Cabinet
FIGURE 11.15 - CONNECTION BETWEEN UPS, BATTERY CABINET & BYPASS BREAKER
11.7

Grounding Configuration

This section describes the grounding configuration to be used with various AC service entrance configurations.
Inadequate grounding will cause problems at start-up. Connections for the ground line and the neutral line
must be made appropriately according to the system configuration.
11.7.1 Recommended configuration (for 4 wire input with Input Neutral
grounded)
Figure 11.16 shows recommended grounding configuration when the input neutral is grounded.
The neutral line at the input source is usually grounded. The neutral terminal in the UPS cabinet should be
disconnected from the ground bus. The neutral connection for the UPS bypass input should be grounded.
G8000 Series Installation and Operation Manual
Power Source
To Bypass
Input
Power Source
for trip coil
To DC
Input
Ext. EPO (Customer) N.O. Contacts
TC
Bypass Breaker
Overheat
B-Contact
Auxillary A-
contact
Battery Cabinet
45