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:
LW30-252(T)/T4000-50 high voltage SF6 tank type circuit breaker is the product invented by our company on the base of ZF16-252 GIS. The product uses horizontal type and three-phase structure. The arc-extinguish of circuit breaker is installed in the grounding aluminium alloy shell. The current transformer is installed under of outgoing line bushing equipped with CT spring operation structure. The product is suitable of three-phase AC 50HZ,252KV power system and can be used to control, protect,measure and contact with circuit breaker.
Standard:
l GB1984-2003;
l IEC62271-100:2001;
l ISO9001
The main characteristics:
● the circuit breaker and current transformer are bounded up.
● it is in the domestic leading level with small volume, light weight, medium height;
● the circuit breaker uses auto arc-extinguish principle. And it owns good breaking capacity, short arcing time, long electrical life, full capacity breaking 20 times.
● the circuit breaker is equipped with CT26 type spring operation structure. The electrical life is 10000 times. It applies with non-oil standard.
The main parameters:
NO. | The technical requirement | Unit | Data |
1 | Rated voltage | kV | 126 |
2 | Rated frequency | Hz | 50 |
3 | Rated current | A | 3150 |
4 | Rated short-time withstand current | kA | 40(3s) |
5 | Rated peak withstand current | kA | 100 |
6 | Rated short-time power frequency withstand voltage | kV | 230(to earth, interphase) |
230+100(fracture) | |||
7 | Rated lighting impulse withstand voltage(peak) | kV | 550(to earth, interphase) |
550+145(fracture) | |||
8 | Rated SF6 gas pressure (20℃) | MPa | 0.5 |
9 | SF6SF6 gas leaking rate/year | % | ≤0.5 |
10 | Magnitude of partial discharge
| pC | ≤5 |
11 | The radio interference level | μV | ≤500 |
