Isolation:
- First put it out of Standby position
- Insert key and put the Breaker in Switch-gear mode
- Open the control supply cabinet using cabinet key
- Plug out DC fuse in the left bottom of panel
- Open Breaker cabinet panel using cabinet key
- Unlock the Breaker
- Insert Racking lever in the slot allowed
- Lift this lever upward, Breaker will move outside
- Plug out the control supply rack
- Again insert the lever and push down ward
- Breaker will move out of cabinet
- Pull the Breaker out
- Ensure bus shutter is down
- Lock the bus shutter
- Again insert Breaker
- Close cabinet doors.
Normalisation:
- Open cabinet doors.
- Pull out the breaker form cabinet
- Open the Bus shutter lock
- Plug in the control supply rack to breaker
- Insert Breaker by first Upward and then Downward movement of lever
- Lock the Breaker in position
- Close the cabinet door by cabinet key
- Open the control supply panel using cabinet key
- Plug in the DC control fuse
- Close the Control panel door
- Put the Mode-Remote using Key
- Reset all relays.
- Check In Service lamp glows
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