LW3-12 Series SF6 Outdoor High-Voltage Circuit Breaker (Primary and Secondary Integration Circuit Breaker)
Category:
Product Description
Product Overview
The LW3-12 pole-mounted circuit breaker is suitable for three-phase power systems with AC 50/60 Hz and a rated voltage of 12 kV, used to switch load currents, overload currents, and short-circuit currents. It can automatically isolate the section of the distribution line where a fault has occurred. The switch is equipped with a new‑technology electronic controller that supports manual operation, motorized operation, and remote operation. The electronic controller is designed to operate under a wide range of climatic conditions and enables remote monitoring and control. Installation and configuration are convenient, reliable, and fast, helping to reduce construction costs.
Product Model and Meaning
Terms of Use
1. Ambient air temperature: -40°C to +50°C;
2. Relative humidity ≤ 110%;
3. Altitude ≤ 2000 meters;
4. Wind pressure ≤ 700 Pa (equivalent to a wind speed of 34 m/s);
5. Seismic intensity ≤ 8 degrees;
6. Installation Location: No risk of fire or explosion, no chemical corrosion, and no frequent severe vibrations.
7. Pollution degree: Class I, Class IV.
Main Features
1. SF6 gas is a non-toxic, non‑flammable dielectric gas with arc‑extinguishing properties.
2. In addition to standard ceramic sleeves, we can also offer a variety of solutions, including rubber insulators for epoxy equipment sleeves.
3. The switch’s status—closed or open—should be easy to see.
4. The backup electronic controller supports both local operation and master console operation via the FTU/RTU interface.
5. The switch is made from proven, durable, corrosion‑resistant materials (304L stainless steel specifically designed for warships), ensuring a service life of 30 years and enabling a wide range of operations, making it an ideal choice for pole-mounted equipment.
Main Technical Parameters
|
Serial Number |
Name |
Unit |
Parameters |
|
|
1 |
Rated Voltage |
kV |
12 |
|
|
2 |
Rated current |
A |
630 |
|
|
3 |
Rated short-circuit breaking current |
kA |
16/20 |
|
|
4 |
Rated short-circuit withstand time |
S |
4 |
|
|
5 |
Rated Making Current (Peak) |
kA |
50 |
|
|
6 |
Power Frequency Withstand Voltage |
Wet (10 sec) |
kV kV |
45 50 |
|
Dry (1 min) |
||||
|
7 |
Rated lightning impulse withstand voltage (Peak) |
Relatively / Intermittently |
kV |
85 |
|
Between fracture surfaces |
kV |
95 |
||
|
8 |
Arc-extinguishing medium |
|
SF6 Gas |
|
|
9 |
Insulating medium |
|
SF6 Gas |
|
|
10 |
Closing/Opening Time |
S |
<0.1 |
|
|
11 |
Mechanical life |
|
M2 level ≥ 10,000 |
|
|
12 |
Inflation pressure |
Mpa |
0.22 |
|
|
13 |
SF6 Leakage Amount |
- |
≤0.05 |
|
|
14 |
Protection Level |
- |
IP67 |
|
Ordering Instructions
1. When placing an order, please specify the product model. For example, indicate the rated current of the sectionalizing circuit breaker, the rated short-circuit breaking current, the quantity, and the product configuration (such as the current transformer ratio, accuracy, capacity, quantity, and factory‑specified transformation ratio).
2. Users must specify the installation method and select the corresponding mounting bracket and fastening accessories.
3. Users can select the appropriate functional configuration based on their specific requirements, such as whether the GPRS controller, the main body of the sectionalizing circuit breaker, is equipped with an isolating switch, and what spare parts are included.
Keywords:
LW3-12 Series SF6 Outdoor High-Voltage Circuit Breaker (Primary and Secondary Integration Circuit Breaker)
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Contact Information
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Email:
Address:
East of the 22nd Avenue and south of Fengda Road, Zhengzhou Economic and Technological Development Zone
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