The operation method of high-voltage substation equipment is a high-risk work, involving personal safety and capital safety. It must be operated by two professional technicians, one for operation and one for monitoring. It is forbidden to open and close the high-voltage disconnector with some or load!

A. Pre operation inspection

1. Before the high-voltage distribution cabinet is plugged in, check whether there is dirt in each cabinet and whether the manual opening and closing are normal.

2. Whether the standard parts in the high-voltage distribution cabinet are loose, and whether the connection of the incoming and outgoing lines is normal.

High voltage distribution cabinet

3. Check whether the compression resistance of various intermediate, phase zero and phase ground insulation layers meets the requirements.

B. Test operation:

1. When the high-voltage distribution cabinet enters the secondary operation switching power supply, whether the electric operation of each power switch can be normal under full load.

2. Whether the power switch self-locking interlock of ah01 # cabinet and ah02 # cabinet can be operated normally when the high-voltage distribution cabinet is fully loaded.

3. The buttons of ah01 cabinet and ah02 # cabinet of high-voltage distribution cabinet must be pressed and cannot be reclosed at the same time.

C. Plug in operation of high-voltage distribution cabinet (the plug-in operation can be completed only after the above procedures and processes are carried out and no problems are found):

1. The high-voltage distribution cabinet shall first cut off all loads such as all high-voltage circuit breakers, and then send in voltage.

2. Turn on the three-phase five wire high-voltage disconnector successively after the high-voltage distribution cabinet is found to be normal.

(it is prohibited to reclose the power switches of ah01 # cabinet and ah02 # cabinet at the same time.)

3. Close the three-phase five wire high-voltage circuit breaker after the high-voltage distribution cabinet is checked and confirmed to have no problem.

4. After the high-voltage distribution cabinet is found to be normal, close the high-voltage isolation switch,

5. High voltage circuit breaker for outgoing line of the combined group.

6. Plug in operation.

D. Power off inspection and maintenance:

1. The high-voltage distribution cabinet shall first cut off all loads such as the high-voltage circuit breaker of the outgoing line of the group.

2. After the high-voltage distribution cabinet is found to be normal, disconnect the high-voltage isolation switch of the outgoing line of the group.

3. Disconnect the incoming high-voltage circuit breaker after the high-voltage distribution cabinet is checked and confirmed to be free of problems.

4. Disconnect the incoming high-voltage disconnector after the high-voltage distribution cabinet is found to be normal.

5. Close the grounding device clamp on the high-voltage distribution cabinet, and open the door to enter the cabinet for inspection and maintenance after checking that there is no power.

E. Switching operation:

1. The high-voltage distribution cabinet first disconnects all loads such as the incoming high-voltage circuit breaker:

2. After checking that there is no abnormality in the high-voltage distribution cabinet, disconnect the three-phase five wire high-voltage isolating switch of ah01 # cabinet successively.

3. Check the high-voltage distribution cabinet and confirm that the three-phase five wire high-voltage disconnector of ah01 # cabinet has been disconnected correctly, then cover the line high-voltage disconnector of ah02 # cabinet.

4. The high-voltage circuit breaker shall be installed on the back cover of the high-voltage distribution cabinet.

5. Capital investment (ah02 #) switching operation.

How to operate the high voltage distribution cabinet

Above the high-voltage distribution cabinet is the content of how to control the high-voltage distribution cabinet. The high-voltage circuit breaker manufacturing is a key component of the power transmission and transformation equipment processing and manufacturing industry, and has a very important influence in the overall power industry.