LEGRAND KEOR HPE 60 kVA Operating Manual page 1275

Alarm A14
Description The phase rotation of the bypass line is wrong.
Possible
causes
Solutions
Alarm A15
Description The voltage or frequency of the bypass line are out of tolerance.
Possible
causes
Solutions
Alarm A16
Description The load is fed by the bypass line.
Possible
causes
Solutions
Alarm A17
Description The load is blocked on the bypass line.
Possible
causes
Solutions
Alarm A18
Description The manual bypass isolator is closed.
Possible
causes
Solutions
50 OMW07104 REV. A
UPS user manual
Manuel de l'utilisateur de l'ASI
Utilizzo dell'UPS
BYPASS WR SEQ
 Wrong connection of power cables.
Check the phase rotation.
If the alarm persists, contact our Technical Support Service.
BYPASS FAULT
 Bypass line instability or failure.
 Wrong phase rotation.
Check the connections to the mains.
Check the stability of mains voltage.
If the alarm persists, contact our Technical Support Service.
BYPASS --> LOAD
 Temporary changeover due to inverter failure.
Verify the inverter status and check whether other alarms are present.
If the alarm persists, contact our Technical Support Service.
RETRANSFER BLOCK
 Very frequent changeovers due to load in-rush currents.
 Static switch problems.
Reset the system.
Check the in-rush currents of the loads.
If the alarm persists, contact our Technical Support Service.
MBCB CLOSED
 Manual bypass isolator closed.
Check the status of the manual bypass isolator.
Check the functionality of the auxiliary contact of the isolator.
If the alarm persists, contact our Technical Support Service.