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Add：17, No. 1336, Hangfu Road, Chongfu Town, Tongxiang City, Zhejiang Province
Tel：+86-571-89184960
Fax：+86-571-89184961
E-mail：xhzkdq@163.com

NEWS

2020-04-02

What is the cause of yellow spot on high pressure vacuum switch tube
The reason for the yellow spot of the high pressure vacuum switch tube is that the silver coating is not enough for the nickel coating, and the oxidation occurs. The specific reasons are as follows: when there is only one layer of nickel on the surface of high-pressure vacuum switch tube, the nickel layer will not be oxidized after baking exhaust, so there will be no yellow spot phenomenon. When the metal surface is covered with double layer of nickel and silver layer, when the thickness of silver layer is thin, the nickel surface is exposed, in this case, the nickel layer is easy to be oxidized, and yellow spot phenomenon appears, which is common with silver and nickel When nickel loses electrons easily, the reason why silver is protected is related.
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2020-03-24

What is the function, function and structure of voltage transformer handcart?
High voltage transformer handcart is commonly known as Pt handcart. It plays an important role in our high voltage cabinet handcart. What is its function?
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2020-03-18

Development history of vacuum interrupter in China
The application of vacuum interrupter in China's power supply system began in 1978. Because of its light weight, simple structure and long service life, vacuum interrupter has been applied to the operation and maintenance of current departments. Has been recognized by the majority of technical personnel. The quality of vacuum interrupters produced in China in the early stage was not stable enough, the current carrying voltage was too high during operation, and some vacuum interrupters still had air leakage. The early manufacturing technology of vacuum interrupter is not mature, so it has some dangerous properties, especially the quality problems of vacuum interrupter.
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