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UPS user manual
Manuel de l’utilisateur de l’ASI
Utilizzo dell’UPS
50 OMW07104
REV.
A
Alarm
A14
BYPASS WR SEQ
Description
The phase rotation of the bypass line is wrong.
Possible
causes
Wrong connection of power cables.
Solutions
Check the phase rotation.
If the alarm persists, contact our Technical Support Service.
Alarm
A15
BYPASS FAULT
Description
The voltage or frequency of the bypass line are out of tolerance.
Possible
causes
Bypass line instability or failure.
Wrong phase rotation.
Solutions
Check the connections to the mains.
Check the stability of mains voltage.
If the alarm persists, contact our Technical Support Service.
Alarm
A16
BYPASS --> LOAD
Description
The load is fed by the bypass line.
Possible
causes
Temporary changeover due to inverter failure.
Solutions
Verify the inverter status and check whether other alarms are present.
If the alarm persists, contact our Technical Support Service.
Alarm
A17
RETRANSFER BLOCK
Description
The load is blocked on the bypass line.
Possible
causes
Very frequent changeovers due to load in-rush currents.
Static switch problems.
Solutions
Reset the system.
Check the in-rush currents of the loads.
If the alarm persists, contact our Technical Support Service.
Alarm
A18
MBCB CLOSED
Description
The manual bypass isolator is closed.
Possible
causes
Manual bypass isolator closed.
Solutions
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.
Содержание BSK93
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