A ground knife indicator board for zs1 type switchgear of 6kv system
A switchgear and ZS1 technology, which is applied in the field of operation and maintenance of nuclear power plants, can solve problems such as the inability to correctly indicate the state of the ground knife of the ZS1 switchgear, the damage of the ground knife sign, and the increase in the cost of replacing the ground knife sign.
Active Publication Date: 2019-02-01
CNNC NUCLEAR POWER OPERATION MANAGEMENT +1
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Problems solved by technology
[0002] In the 6kV system ZS1 switchgear, during the installation and commissioning stage and the insulation measurement of the downstream motor load during the overhaul period, the ground knife indicator was repeatedly damaged, and the ground knife status of the ZS1 switchgear could not be correctly indicated.
Such defects will cause misjudgments in operation and daily maintenance, and in severe cases may lead to accidents such as equipment damage and casualties
At the same time, the replacement of a damaged ground knife sign requires the manufacturer's professionals to remove all parts of the switch cabinet ground knife shaft under the window of the entire 6kV bus power failure, which not only increases the cost of replacing the ground knife sign, but also increases the cost of the 6kV bus power failure. It will affect the normal power generation of the unit
Method used
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Embodiment Construction
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0016] like figure 1 , figure 2 and image 3 As shown in the figure, a ground knife signboard for ZS1 type switch cabinet of 6kV system includes a main body part and a boss structure. The main body part and the boss structure are integrally formed, and the boss structure is arranged on the rear end surface of the main body part. The rear end of the boss structure is fixed on the rotating shaft inside the 6kV switchgear to fix the sign. The main body part is used to paste the indicator signs.
[0017] The main body part is in the shape of an annular plate as a whole, and an indication mark is pasted on the front end surface of the annular shape.
[0018] The boss structure is in the shape of a hollow cylinder as a whole, and the circular bottom surface of the front end is open. The circular opening on the front end surface of the boss structure coin...
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The invention belongs to the technical field of nuclear power station operation and maintenance, and particularly relates to a novel earthing knife-switch sign for a 6 kV system ZS1 type switch cabinet. The novel earthing knife-switch sign is characterized by comprising a body part and a lug boss structure; the body part and the lug boss structure are integrally formed, and the lug boss structure is arranged at the rear end surface of the body part; the rear end surface of the lug boss structure is fixed on a rotary shaft inside the 6 kV switch cabinet. The novel earthing knife-switch signs are arranged on 20 sections of 6 kV busbars respectively on the spot of 304, 305, 403 and 404 overhaul and a routine maintenance period, the situation of earthing knife-switch sign damage does not appear on the ZS1 switch cabinet with the novel earthing knife-switch signs, and it is proved that the novel earthing knife-switch sign completely meets onsite operation requirements.
Description
technical field [0001] The invention belongs to the technical field of operation and maintenance of nuclear power plants, and in particular relates to a ground knife sign used for a ZS1 type switch cabinet of a 6kV system. Background technique [0002] During the installation and commissioning stage of the 6kV system ZS1 switchgear and the insulation measurement of the downstream motor load during the overhaul period, the ground knife indicator board was repeatedly damaged, and the ground knife status of the ZS1 switchgear could not be correctly indicated. Such defects will cause misjudgment in operation and daily maintenance, and in severe cases may lead to equipment damage and casualties. At the same time, the replacement of a damaged ground knife sign requires a professional from the manufacturer to remove all parts of the ground knife shaft of the switch cabinet under the window of the entire 6kV busbar power outage. It will affect the normal power generation of the uni...
Claims
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IPC IPC(8): H02B1/16H02B1/30H01H9/16
CPCH01H9/16H02B1/16H02B1/306
Inventor 田昆鹏王学亮陈慧葛秋原曹晓晖赵强朱国锋
Owner CNNC NUCLEAR POWER OPERATION MANAGEMENT