LEGRAND KEOR HPE 60 kVA Operating Manual page 1282

Alarm A55
Description Parallel cable doesn't communicate.
 Parallel cable disconnected or damaged.
Possible
causes
Solutions
Alarm A56
Description The rectifier input voltage is unbalanced.
 Problems on the LV or MV distribution network
Possible
causes  Defect of the measuring circuit
Solutions
Alarm A59
The backfeed protection has been activated. Alarms present only in the
Description
history log.
 Problems on the bypass static switch
Possible
causes
Solutions
Alarm A61
The alarm is activated when the DC voltage exceeds 910 V (455 V for each
Description
capacitors bank). The alarm must be manually reset by display
 Rectifier shuts down (alarm A3)
Possible
 Inverter shuts down (alarms A13 and A25) and remains blocked
causes
 Load is transferred to bypass (alarm A16)
Solutions
Alarm A62
Description Sudden increase of the AC input voltage (fast sensor)
 Voltage spike on the AC mains.
Possible
 Possible internal fault.
causes
Solutions
Manuel de l'utilisateur de l'ASI
PAR CABLE DISC
Check the connection of cable
Contact our Technical Support Service.
MAINS UNBALANCE
Check the input voltage
Contact our Technical Support Service.
BACKFEED RELAY ON
Check the static switch thyristors
Contact our Technical Support Service.
MAX VDC
Test the parallel operation and check the synchronisation
parameters.
Check the correct operation of the static switch.
Contact our Technical Support Service.
MAINS OVERVOLTAGE
Check the mains voltage.
If the alarm persists, contact our Technical Support Service.
UPS user manual
Utilizzo dell'UPS
OMW07104 REV.A 57