Safety Measures - GE GL317D Instruction Manual

Safety measures

Circuit- breaker
general preparing
Release the springs
Check the optical
signalization
11- 2016
Maintenance
Intervention on the FK3- 4 operating device
The table below gives the steps to prepare the circuit- breaker to work safely :
Step Action
1 Isolate the circuit- breaker from
the network.
2 Switch- off the supply circuit of
the reloading motor.
3 Check the SF
6
The table below gives the procedure to release the closing spring and the
opening spring depending the circuit- breaker state :
If the circuit- breaker
position is ...
Closed
Open
Check that the operating mechanism's optical signalization shows the sym-
bols below :
Circuit- breaker
Open
GE Information
Shut down the circuit- breaker,
de- energize and earth it.
pressure gas. Make sure that the SF
gas is  p
Below this level, no mechanical
operating is allowed.
In the operating device, activate the
opening handle and the closing han-
dle like below :
1 - Open
2 - Close
3 - Open
Activate the closing handle and the
opening handle like below :
1 - Close
2 - Open
Closing spring
Released
Comment
pressure
6
.
me
Action
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