Liebert 130 kVA, User Manual

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User Manual
Hipulse - Single Phase ‘1+N’ UPS System 130 kVA - 110V
37
At this point the UPS inverter stops but the load
continues to be supplied by the bypass mains.
The Load on Mains indicator light (6) on the unit's
synoptic panel flashes yellow, and the Load on
Inverter indicator light (5) goes off.
Your load is now powered via the Static Bypass system
5. Unfasten the lock, release the internal safety bar
and close the maintenance bypass power switch
Q3. Open the Rectifier input power switch Q1, the
Output power switch Q4, the bypass power switch
Q2 and the Battery circuit breaker. This is located
inside the battery cabinet (if used) or is otherwise
located adjacent to the battery racks. The unit will
power down but the load will continue to be
supplied by the manual bypass.
WARNING
Wait 5 minutes for the internal D.C. busbar capacitors
to discharge.
WARNING
The following points will be live within the UPS:
- Bypass a.c. input supply terminals.
- Maintenance Bypass power switch.
- Static Bypass power switch.
- UPS output terminals.
Input and Output terminals remain protected by a
metallic cover.
Your load is now powered from the maintenance bypass
system and the UPS is completely shut down.