
UPS user manual
66
OMH44150 REV. B
Alarm
A17
RETRANSFER BLOCKED
Description
The load is blocked on the bypass line.
Possible
causes
Very frequent changeovers due to load in-rush currents.
Static switch problems.
Solutions
1. Reset the system.
2. Check the in-rush currents of the loads.
3. 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
1. Check the status of the manual bypass isolator.
2. Check the functionality of the auxiliary contact of the isolator.
3. If the alarm persists, contact our Technical Support Service.
Alarm
A19
OCB OPEN
Description
The output isolator of a BPU module is open.
Possible
causes
BPU Module output isolator open.
Solutions
1. Check the status of the output isolator.
2. Check the functionality of the auxiliary contact of the isolator.
3. If the alarm persists, contact our Technical Support Service.
Alarm
A20
OVERLOAD
Description
The current sensor has detected an overload at the output. If the alarm
persists, the thermal image protection will be activated (alarm A21).
Possible
causes
Output overload.
Measuring circuit failure.
Solutions
1. Check the loads connected to the UPS output.
2. Contact our Technical Support Service.
Summary of Contents for UPSaver 1000 kVa
Page 2: ...UPS OPERATING MANUAL UPSaver 400 1600 kVA ...
Page 5: ......
Page 7: ...Warnings and general information 2 OMH44148 REV A ...
Page 13: ......
Page 20: ...UPSaver installation and start up OMH44149 REV C 7 ...
Page 33: ...UPSaver installation and start up 20 OMH44149 REV C Picture 6 Handling of the power module ...
Page 57: ...UPSaver installation and start up 44 OMH44149 REV C Picture 46 UPS cabinets upper fixing ...
Page 59: ...UPSaver installation and start up 46 OMH44149 REV C Picture 49 Power module cables terminals ...
Page 115: ...UPS user manual 6 OMH44150 REV B ...