User Manual

 

Hipulse - Single Phase ‘1+N’ UPS System

130 kVA - 110V

14.

BATTERY: E.O.D.

Battery discharge has continued beyond a preset value. The

 

 

 

inverter will shut down, the system will attempt a transfer to bypass.

 

 

 

If Bypass is not available, any load connected to the UPS will be

 

 

 

without power.

 

 

 

 

15.

RECT. OFF

The RECT. OFF alarm is active whenever the battery charger

 

 

 

(rectifier) is not producing its correct output voltage. This can be

caused by an operator selection to OFF, an Input supply failure, an open rectifier a.c. input power switch or an internal fault which may be accompanied by one of the fault conditions.

16.RECT. SWITCH OPEN RECT. CURRENT LIMIT BATTERY: FUSE FAIL DC BUS: FAST OVERVOL

Most of the rectifier fault messages are self explanatory however, the DC BUS: FAST OVERVOLTAGE message informs the operator the d.c. busbar voltage is too high.

17.

BYP. ABSENT

INPUT FAILURE: input a.c. supply failed or out of specified

 

BYP. OVERVOLTAGE

acceptable range. Do not switch OFF the inverter while this

 

BYP. UNDERVOLTAGE

indication is active or the load will lose its power.

 

BYP. FREQUENCY ERROR

 

 

 

 

18.

BYP. SCR FAILURE

One or more of the static switch SCR’s has developed a fault. The

 

 

bypass would not support the load in the event of a UPS failure,

 

 

immediate action is required. Seek qualified assistance.

 

 

 

19.

BYP. PHASE ROT. ERROR

This message informs the operator that the input power lines have

 

 

been cross-connected and the phases sequence is incorrect.

 

 

 

20.

MANUAL BYPASS CLOSED

This is a status warning that the load is being powered through the

 

 

maintenance bypass line and is unprotected from mains supply

 

 

aberrations.

 

 

 

21.

INV. UNSYNCHRONIZED

This warns that the inverter is not synchronized with the bypass

 

 

supply, which is normally due to a problem with the bypass supply

 

 

being outside an acceptable frequency window. Do not switch OFF

 

 

the inverter when this alarm is active or the load will experience a

 

 

200 millisecond power break.

 

 

 

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Liebert 130 kVA user manual BYP. Absent