LW58A-72.5 sulfur hexafluoride tank circuit breaker
LW58A-72.5 sulfur hexafluoride tank circuit breaker

Rated voltage:72.5kV
Rated current:2500A、3150A、4000A
Rated short circuit current:40kA
Line charging current opening and closing test:Level C2
Low and high temperature tests:-50℃ ~+55℃
Product use and characteristics
LW58A-72.5 tank circuit breaker is a new generation of open high voltage electrical equipment developed by Jiangsu Haian High Voltage Electrical Appliance Co., Ltd. with independent intellectual property rights. It is suitable for high cold and high altitude areas. The product is composed of inlet and outlet line sleeve, current transformer, arc extinguishing chamber, frame, operating mechanism and other components with advanced technology and reliable quality. The product is used to cut off the rated current, fault current or conversion line to achieve the control and protection of the power system, and can also be used as a contact circuit breaker. At the same time, it has the ability to switch back-to-back capacitor bank C2 and switch reactor, which is the preferred circuit breaker for reactive power compensation circuit of substation with voltage level of 330kV and above.
Serial number | Project | Argument |
1 | Rated voltage | 72.5kV |
2 | Rated current | 2500A、3150A、4000A |
3 | Rated short circuit current | 40kA |
4 | Line charging current opening and closing test | Level C2 |
5 | Back-to-back capacitor bank current switching capability | BC2,Breaking current 4000A |
6 | Rated short circuit breaking times | Greater than 22 times |
7 | Mechanical life up to | 10000 times |
8 | Low and high temperature tests | -50℃ ~+55℃ |
9 | SF6 year air leakage rate | Less than 0.5% |
10 | Altitude | 5000m |
Frequently Asked Questions
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