LW49-75kV/126kV Outdoor HV AC Self Extinguishing SF6 Circuit Breaker
Product Details:
| Type | High Voltage |
|---|---|
| Poles Number | 3 |
| Place of Origin | Beijing, China (Mainland) |
| Brand Name | Huadong |
| Model Number | LW49-126 Outdoor HV AC |
Detailed Product Description
Product overview
LW49-126 Outdoor HV AC Self Extinguishing SF6 Circuit Breaker is used in the electrical system of 3-phase AC 50Hz,110 KV, as its control and protective equipment, and also a connecting circuit breaker for switching loading current, cutting-off fault current and switching over power circuit through various wiring ways in the power plant and substation.
Product standard
This circuit breaker is compliant with GB1984-2003 HV AC Circuit Breaker and IEC 56 HV AC Circuit Breaker .
It is insulated and arc-extinguished by SF6, complying with self-extinguishing principle. Working with the spring actuator, it has the following features: powerful breaking capability, long electric life of 20 times, lower active power, and high reliability.
Strong ability of breaking, CB uses self-extinguishing principle, with high breaking and closing ability. Whole annul leak rating<0.02%( O ring uses Sino-America joint company PAK company, the mould and material made in America)
Micro moisture of arc extinguishing chamber <100ppmV/V
Micro moisture of other chambers <150ppm V/V
Technical parameter
Serial no | Item | Unit | Data | |
1 | Rated voltage | KV | 75/126 | |
2 | Rated frequency | Hz | 50 | |
3 | Rated current | A | 3150 | |
4 | Rated short-circuit breaking current | kA | 40 | |
5 | Rated short-circuit makeup current (peak) | kA | 100 | |
6 | Rated peak withstand current | kA | 100 | |
7 | Rated short-time withstand current | kA | 40 | |
8 | Rated short-circuit duration | s | 4 | |
9 | Electrical life | times | 20 | |
10 | Rated power frequency withstand voltage | Over earth, between phases | kV | 230 |
Between fractures | kV | 265 | ||
11 | Rated lightning pulse withstand voltage | Over earth,between phses | kV | 550 |
Between fractures | kV | 630 | ||
12 | Rated out-of-step breaking current | kA | 10 | |
13 | Rated circuit charging breaking current | A | 31.5 | |
14 | Near-field fault breaking current | kA | 36.30 | |
15 | Main loop resistance | µΩ | 40 | |
16 | Mechanical life | times | 10000 | |
17 | Rated pressure of SF6 (Guage at 20) | Mpa | 0.6 | |
18 | Alarming purssure of SF6 (Guage at 20) | Mpa | 0.55 | |
19 | Locking purssure of SF6 (Guage at 20) | Mpa | 0.5 | |
20 | Creepage distance | mm | 3150,3906 | |
21 | Rated operation squence | 0-0.3s-CO-180s-CO | ||
22 | Radio interference level | µ V | 500 | |
23 | Yearly leakage rate of SF6 | % | 1% | |
24 | Water content of SF6 | Ppm | 150 | |
25 | Mass of SF6 for each circuit breaker | Kg | 10 | |
26 | Mass of each circuit breaker | Kg | 1800 | |
27 | Break-break force (downward) | N | 25000 | |
28 | Close-brake force (upward) | N | 15000 | |
LW49-75kV/126kV Outdoor HV AC Self Extinguishing SF6 Circuit Breaker
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Company Info
Beijing Huadong Simbo Co., Ltd
[China (Mainland)]
[Verified Member]
City: Beijing
Province/State: Beijing
Country/Region : China (Mainland)
Business Type:Manufacturer, Trading Company, Distributor/Wholesaler
Online Postings: Products