Active Member
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[China]
Address: 1107B Huidong Building, Wenhua East Road, Shandong, China
Contact name:Li Zheng
Shandong Green World International Trading Co., Ltd. |
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General:
ZN12-40.5 indoor high voltage vacuum circuit breaker is mainly used in 40.5 power system and used as the control and protection unit of power station, substation and industrial mining enterprise and suitable for frequency operation station.
The main characteristics:
ZN12-40.5 circuit breaker use main conductivity loop and operation mechanism around arrangement form. Circuit breaker uses dedicated spring operation integrated with switch. The main loop uses excellent vertical magnetic field vacuum arc-extinguish chamber. The circuit breaker has small volume, steady function, safety operation.
The technology of circuit breaker is 3AF with strong breaking capacity, long mechanical lifetime, and excellent technical performance.
The actuator with complete functions can be operated by AC, DC, or manual operation.
The model:
ZN12-40.5/T1250A,1600A/25 kA,31.5 kA
ZN12-40.5/T2000A,2500A/31.5 kA
The main technical parameters:
NO. | Item Name | Unit | Value | |
1 | Rated voltage | kV | 40.5 | |
2 | Power frequency withstand voltage(1min) | kV | 95 | |
3 | Lightning impulse withstand voltage(Peak) | kV | 185 | |
4 | Rated frequency | Hz | 50 | |
5 | Rated current | A | 1250, 1600,2000,2500 | |
6 | Rated short circuit breaking current | kA | 25 | 31.5 |
7 | 4sRated short-time withstand current | kA | 25 | 31.5 |
8 | Rated peak withstand current(Peak) | kA | 63 | 80 |
9 | Rated short circuit making current(Peak) | kA | 63 | 80 |
10 | Rated capacitance breaking current | A | 400 | |
11 | Mechanical life | times | 10000 | |
12 | rated short circuit current cut-off times | times | 20 | |
13 | Rated operation sequence |
| part-0.3 s –close and open-180 s –close and open | |
