ABB HiPerGuard MV UPS User Manual page 92

Step User Action
User selects "Precharge" screen on GDM and
1
presses Charger "Enable" button
2
3 The User shall confirm that the battery
voltage measured at the battery and the DC
bus voltage as displayed on GDM screen are
reasonably matched. Then the User shall close
the battery circuit breaker. The User shall also
confirm that the battery BMS is not reporting
any active faults.
4
5 Precharge is complete. The system is now
ready to start.
Table 8.1: DC bus precharging steps
1. Pre-charge can only be performed via GDM or over GDM remote webpage
Figure 8.4: System after "Precharge" process of the DC bus is complete
HI PE RG UA RD M V UP S U S E R M A N UA L
System Response
1
MV UPS auxiliary charger shall charge up the
converter DC bus to a preset threshold.
GDM shall indicate that the following:
– No BMS Fault reported.
– Converter DC bus pre-charged.
– DC isolator closed.
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