LW3 (PGS)-12 Outdoor High-Voltage Sulfur Hexafluoride Circuit Breaker
Contact Info
- Add:Xiangyang Industrial Zone, Liushi Town, Yueqing City, Zip:
- Contact: 李经理
- Tel:15167417505
- Email:864640886@qq.com
Other Products
The LW3-12 series circuit breaker is a high-voltage electrical device that uses SF6 gas as an arc-extinguishing and insulating medium. It is mainly applied in power systems with a rated voltage of 12 kV and a rated frequency of 50 Hz, and is especially suitable for control and protection functions in medium and small substations and distribution branch lines.
I. Product Overview and Features
This product is an upgraded product in urban and rural power grid construction, and its performance-price ratio is superior to other outdoor circuit breakers of the same voltage level.
Main features include:
Compact structure: Adopts a three-phase common tank design, with a simple structure and compact layout.
Reliable performance: Uses rotating arc technology, which improves arc-extinguishing efficiency and electrical life. Its arc-extinguishing and insulating performance is reliable, with a long electrical life.
Convenient operation: The power output is rotary, with a good sealing effect. The moving mass of the main body is small, reducing the operating power and improving the mechanical life.
Simple maintenance: Compared with vacuum and oil circuit breakers, it has significant advantages in terms of structure, weight, safety, maintenance, and cost.
Flexible configuration: The main body structure is independent, and products with different performances and installation methods can be derived. Special arrangements can be made according to user requirements, and transformers for protection and measurement with different transformation ratios can be configured.
II. Main Technical Parameters
| Serial No. | Item Name | Parameter |
|---|---|---|
| 1 | Rated voltage | 12 kV |
| 2 | Rated current | 400 A, 630 A, 1000 A |
| 3 | Rated short-circuit breaking current | 6.3 kA, 8 kA, 12.5 kA, 16 kA, 20 kA |
| 4 | Rated short-circuit closing current (peak value) | 16 kA, 20 kA, 31.5 kA |
| 5 | Rated short-time withstand current | 8 kA, 12.5 kA, 16 kA, 20 kA |
| 6 | Rated thermal stability time | 4 s |
| 7 | Rated operation sequence | Open-180s-Close-Open-180s-Close-Open (Type Ⅰ) / Open-0.5s-Close-Open-180s-Close-Open (Type Ⅱ) |
| 8 | Rated gas pressure (20°C) | 0.35 MPa |
| 9 | Working gas pressure (20°C) | 0.25 MPa |
| 10 | Mechanical life | ≥ 2000 times or 3000 times |
| 11 | Annual gas leakage rate | ≤ 1% |
| 12 | Breaking current at zero gauge pressure | 400 A, 630 A |
III. Usage Environmental Conditions
This series of circuit breakers is suitable for the following environments:
Altitude: Not more than 1000 meters.
Ambient temperature: -40°C to +40°C.
Pollution level: Suitable for Class Ⅱ and Class Ⅲ pollution environments.
Installation location: Shall be free of fire and explosion hazards, and free of severe pollution, chemical corrosion and violent vibration.
Wind pressure: Not more than 700 Pa (equivalent to a wind speed of 34 m/s).
Seismic intensity: Not more than 8 degrees.
IV. Product Model and Configuration
The products are mainly divided into two types: Type Ⅰ and Type Ⅱ, which differ in the operating mechanism equipped:
LW3-12 Type Ⅰ: Equipped with a manual energy-storing spring operating mechanism, mainly for pole-mounted installation.
LW3-12 Type Ⅱ: Equipped with an electric energy-storing spring operating mechanism. In addition to local manual operation, it can also realize remote control and automatic reclosing operation, and is suitable for medium and small substations.
V. Ordering Notes
The following information needs to be clearly specified when ordering:
Product model, specification and rated parameters.
Required quantity and delivery date.
Type and transformation ratio of the additional current transformer.
Control voltage and power type (AC or DC) of Type Ⅱ circuit breaker.
Distribution mode of incoming and outgoing terminals (horizontal or vertical).
Whether the gas pressure gauge needs electrical contacts.
Other special requirements, such as special current transformer transformation ratio and accuracy, installation method changes, etc.
| Industry Category | Electrical Equipment & Supplies/High Voltage Electrical/High Voltage Circuit Breakers |
|---|---|
| Product Category | |
| Brand: | 乐清市恒昭电气有限公司 |
| Spec: | LW3-12/1250A |
| Stock: | 1 |
| Manufacturer: | 乐清市恒昭电气有限公司 |
| Origin: | 113303 |
