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How is the type of high voltage circuit breaker stipulated?

2017-10-24 ydlcb

At present, according to the provisions of national technical standards, China's circuit breaker models are generally composed of text symbols and numbers in the following ways:

Its representative meaning is:

① - Product letter code, represented by the following letters: S - less oil circuit breaker; D - multi-oil circuit breaker; K - Air circuit breaker; L-sulfur hexafluoride circuit breaker; Z - vacuum circuit breaker; Q - gas production circuit breaker; C - Magnetic blow circuit breaker.

② - Device location code; N - indoor, W - outdoor.

③ - Design series sequence number; By the numbers 1, 2, 3... Indicates.

④ - Rated voltage, KV.

⑤ - Other supplementary working characteristics, G - improved, F - phase operation.

⑥ - Rated current, A.

⑦ - Rated breaking current, KA.

⑧ - Special environment code.


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