• Follow us
Home > Knowledge > Content
What are the operation permit contents for power supply and power off?
Mar 10, 2017


Operation Permit for HV switchgears


Power-on operation permit 

Power supply

1) Command is received from shift leader.

2) Check the double codes of  the device is correct.

One operate, another supervise

3) Check the switch is on “open” position.

4) Check grounding disconnecting switch of the cabinet is on “open” position.

5) Check the selector switch of the cabinet is at “local” position.

6) Plug in the secondary plug of switchgear.

7) Close the power supply of switch status indication device.

8) Switch on the control power switch.

9) Switch on the energy storage power switch.

10) Check switch energy storage of switchgear is in good condition.

11) Shift CB to the “working” position

12) Rotate the selector switch to the “remote” position.

13) Check the status of device is displayed correctly in DCS.

14) Perform comprehensive inspection after completing above operation.

15) Feedback report to shift leader.

 


Power off operation permit 

Power off

1) Command is received from shift leader. 

2) Check the motor of device is stopped.

3) Check the double codes of switchgear is correct.

4) Check the switch is on “open” position.

5) Shift the switch to the“local”  position.

6) Shift switch to the“test”position.

7) Open the power supply of status  indication device.

8) Switch off the control power switch.

9) Switch off the miniature energy storage switch.

10) emove the secondary plug.

11) Check the status of device is  display correctly in DCS.

check status

12) Perform comprehensive inspection after completing above operation.

13) Feedback report to shift leader.