WEG ABWC Serie Instrucciones De Instalación, Operación Y Mantenimiento página 56

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Defect types
The circuit breaker will not
close either manually or
remotely
Closes manually but will not
close in remote mode
It will not load electrically
The extractor/insertion rod will
not enter
Unable to extract the circuit
breaker
The circuit breaker cannot be
inserted completely.
(Not in the Inserted position)
56 | ABWC Compact Air Circuit Breaker
Cause
7. Problem in the shunt release power supply
8. Undervoltage release with insufficient voltage or
defective
9. Circuit breaker locked in the open position
10. Circuit breaker is interlocked
1. Improper voltage source of the shunt closing release
2. Defect of the open circuit of the shunt closing release
Incorrect voltage source for the spring loading motor
1. Blocking of the insertion rod when pressing the
release key
2. With padlock or interlock
3. Wrong position of the circuit breaker inside the truck
1. The extractor rod is inserted
2. The circuit breaker is not in the Extracted position
3. With padlock or interlock
1. The truck and the main circuit breaker frame do not
fit together
2. Wrong position of the cluster
3. The safety shutter is interlocked
Apply voltage (V > 0.85Vn) to the auxiliary switch and
try to close it using the shunt closing release
9. Check that the closing error state is normal
1. Check the voltage source of the shunt closing
3. Try to restart the operation and check for any
problems or defects. Contact the local After Sales
1. Insert while pressing the release key
3. Properly position the circuit breaker in the truck
2. Put the circuit breaker correctly in the Extracted
1. Check that the truck fits into the main frame
2. Move the cluster to the correct position
Table 14.2:
Countermeasure
Remove the shunt release power supply
10. Release the interlock
release. (0.85~1.1Vn)
2. Replace the shunt closing release.
1. Check the voltage source
2. Check the circuit of the loading motor
service and replace the loading motor
2. Remove the padlock or interlock
1. Remove the extractor rod
position
3. Remove the padlock or interlock
3. Remove the interlock