I.B. 32-255-1G
Page 45
Effective 12/02
6-11 TROUBLESHOOTING CHART
Fails To Trip
• Trip Sound • Trip Mechanism • Trip Bar, Trip Latch
But No Trip (Jammed)
• Pole Shaft
(Jammed)
• Operating Rod Assembly
(Broken or pins out)
• Vacuum Interrupter
(One or more Welded)
Undesirably Trips
• Control Circuit • Control Power
(CS/T Switch, remains made)
• Mechanism • Trip Coil Clapper
(Not resetting)
• Trip Bar or Trip Latch
(Poor engagement of mating
or worn surfaces)
• Trip Bar Reset Spring
(Loss of torque)
SYMPTOM INSPECTION AREA PROBABLE DEFECTS
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