9.2.3 Battery Ground Fault Kit- Applicable for APAC Region
The UPS provides a battery ground fault detector to detect and remove battery ground fault so as to ensure reliable system
operation.
When a battery ground fault is detected, an alarm will appear on the UPS display panel.
The battery ground fault detector includes a mutual inductor and a PCB, which should be installed in the BCB box. For the
installation and connection of the battery ground fault detector, refer to Battery Ground Fault Detector (Optional)- Applicable
for APAC Region
9.2.4 Bypass Short-circuit Withstand Option
As shown in Figure 9.4 below, the bypass short-circuit withstand option contains three bypass fuses. Before installation, it is
necessary to remove three bypass shorting copper bars and then install three bypass fuses at the corresponding shorting
copper bars.
Figure 9.4 B ypass short-circu it w ithstand option (Side view )
N o. Descriptio n
1 Bypass short-circuit withstand options
IM PO R T A N T ! Insurance Features：800 A aR Class I
2
t 575 k A
2
Sec (@ 660 V ); P re-arc 8 6 k A
2
Sec.
IM PO R T A N T ! W hen the bypass fuse is used in conjunction with the load bran ch circuit b reaker, the
short-circuit current of the system should be less than 7 kA .
9 Options
147
Vertiv™ Liebert® APM Plus User Manual
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