LW36-72.5 outdoor high voltage AC sulfur hexafluoride circuit breaker

Rated voltage：72.5kV

Rated current：3150A、4000A

Rated short circuit current：31.5kA、40kA

Product use and characteristics

LW36-72.5 self-powered high-voltage sulfur hexafluoride circuit breaker is an outdoor product. The normal product is suitable for the power grid with 50Hz/ 60Hz AC and the maximum voltage of 72.5kV in the area with the altitude not exceeding 1000m and the pollution level not higher than Class IV. It is used to cut off the rated current, fault current or conversion line. To realize the control and protection of the power system, it can also be used as a contact circuit breaker.

The product uses SF6 gas as arc extinguishing and insulating medium, adopts self-energy arc extinguishing technology, and uses a new type of spring operating mechanism. It has the characteristics of long electric life, small operation power, low noise, high reliability, and conforms to the trend of oil-free power equipment and large capacity.

Product parameter

Serial number	Project	Argument
1	Rated voltage	72.5kV
2	Rated current	3150A、4000A
3	Rated short circuit current	31.5kA、40kA
4	Rated short circuit breaking times	Twenty-two times
5	Mechanical life up to	10000 times
6	Low and high temperature tests	-50℃ ～+55℃
7	SF6 year air leakage rate	Less than 0.5%

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