Liebert 130 kVA - Manual (Page 90)

User Manual
Hipulse - Single Phase ‘1+N’ UPS System 130 kVA - 110V
70
8.3.1.5 Switching ON a UPS that was previously switched OFF and isolated from the system.
1. Close the circuit-breakers relative to the shutdown UPS that were previously
opened on the power distribution switchboard.
2. Close the switches Q1 (rectifier input) and Q2 (bypass input) of the UPS.
3. Select the MEASUREMENT function from the display on the main menu, then press
ENTER and select BATTTERY. Press ENTER and check that the voltage level has
reached the rated value (432V or 446 or 459 in accordance with no. of battery blocks).
4. Close the battery circuit-breaker.
5. Close the UPS switch Q4 (output), wait about 20 seconds and check the message
NORMAL OPERATION appearing on the display operator panel.
8.3.1.6 Complete system shutdown
Follow the procedure described in Chapter 5 - Operating Instruction : paragraph 5.6
by working on several UPS modules.
8.3.1.7 Complete system reset
Follow the procedure described in Chapter 5 - Operating Instruction : paragraph 5.7
by working on several UPS modules.
8.4 Display Panel message interpretation in '1+N' System
The alarms are the same as for the single module, as given in the previous paragraph,
with the additional alarms:
CODE DISPLAY ALARM MESSAGE INTERPRETATION
44 INV: PARALLEL ERROR The parallel board has detected a wrong sharing of the load and
has blocked its inverter. Seek qualified assistance.
46 NR: INVERTERS NOT OK. The number of active inverters is below the preset capacity value.