D) Failure to pick up & seal

D) Failure to pick up & seal

1) Low voltage
Remedy: Correct voltage conditions-In case of persistent low voltage change to lower voltage coil or change transformer tap

2) Coil open or shorted
Remedy: Replace the coil

3) Mechanical obstruction
Remedy: Clean and check free movement of contact assembly

4) Coil excitation without arc chute or arc chute not properly fixed
Remedy: Ensure proper fitting of arc chute


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