The UPS battery cabinet and bypass breaker should be wired as shown below in Figure 11.15.

Power Source

Jumper wire if battery OH is not applied

TC

 

To Bypass

 

Input

10

 

11

 

12

 

13

Power Source

14

for trip coil

15

 

16

 

17

 

18

 

19

To DC

20

Input

21

 

22

 

TB1

 

UPS Cabinet

Ext. EPO (Customer) N.O. Contacts

 

Bypass Breaker

Overheat

B-Contact

Auxillary A- contact

Battery Cabinet

FIGURE 11.15 - CONNECTION BETWEEN UPS, BATTERY CABINET & BYPASS BREAKER

11.7Grounding 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.

11.7.1Recommended 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

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Toshiba 480 V, 500 KW, 225, 150, 300, 125, 100 operation manual Grounding Configuration, TB1

480, 125, 225, 150, 480 V specifications

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