| Customization: | Available |
|---|---|
| Transport Package: | Fumigation Wooden Box |
| Trademark: | YQALT |
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FGD-12GD Indoor high voltage three-position vacuum circuit breaker
Overview
The FGD-12GD Series Indoor High Voltage Three-Position Vacuum Circuit Breaker boasts superior electrical and mechanical performance, with a stable and reliable mechanism that ensures long service life. The main circuit employs solid-sealed pole technology, significantly enhancing the breaker's environmental adaptability and insulation reliability. With reliable mechanical and electronic performance, the breaker is designed for maintenance-free operation, extending both mechanical and electronic lifespan. Suitable for 3.6-12kV power systems, it serves as a protective and control unit for grid equipment and industrial power systems, particularly in applications with various load characteristics, frequent operations, and repeated short-circuit breaking.
The FGD-12GD series circuit breaker is equipped with comprehensive mechanical and electrical interlocking devices, ensuring high operational stability and reliability, thus guaranteeing the safety of both operators and equipment. The product integrates solid-sealed pole technology with a modular design, including an isolation switch, vacuum circuit breaker, grounding switch, sensors, interlocking mechanism, and operating mechanism, forming a high-performance, compact high-voltage electrical product.
Operating Environment & Application
This circuit breaker is suitable for various power systems and industrial power equipment, especially in scenarios requiring frequent operations and repeated short-circuit breaking. Its modular design is compatible with cabinet dimensions of 450X1000X1800mm, offering strong environmental adaptability.
Structural Features
1.Rotary Isolation Switch: Features a visible break after disconnection, ensuring safe operation.
2.Mechanical Interlocking: Includes forced mechanical interlocking between the isolation switch, circuit breaker, and grounding switch to prevent misoperation.
3.Modular Operating Mechanism: The breaker's operating mechanism is modular, allowing for independent replacement or maintenance, with excellent interchangeability.
4.Operational Flexibility: Supports manual operation and offers the option of AC/DC energy storage operation for remote control.
5.Safety Assurance: The cabinet door is equipped with a reliable interlocking structure with the grounding switch, ensuring operator safety.
Precautions
•Ensure that the interlocking devices between the breaker and other equipment are in normal working condition during installation and maintenance to avoid misoperation.
•Operation and maintenance should be carried out by trained professionals to ensure personal and equipment safety.
| Technical Specification | |||||
| 1 | Rated voltage | kV | 12 | ||
| 2 | (1min) Rated short-time power frequency withstand voltage: interphase/fracture | 42/48 | |||
| 3 | Rated lightning impulse withstand voltage (peak): phase / fracture | 75/85 | |||
| 4 | Secondarycircuit power frequency withstand voltage (1 min) | V | 2000 | ||
| 5 | Rated frequency | Hz | 50 | ||
| 6 | Rated current | A | 630 1250 | ||
| 7 | Rated short circuit breaking current | kA | 20 | 25 | 31.5 |
| 8 | Rated peak tolerance current | kA | 50 | 63 | 80 |
| 9 | Rated short circuit closing current | kA | 50 | 63 | 80 |
| 10 | 4srated short duration withstand current | kA | 20 | 25 | 31.5 |
| 11 | Rated Short Time Withstand Current Duration | s | 4 | ||
| 12 | Rated Single/Back-to-Back Capacitor Bank Breaking Current | A | 630/400 | ||
| 13 | Rated capacitor bank closing inrush | kA | 12.5 (Frequency is not more than 1000Hz) | ||
| 14 | Rated short circuit current breaking times | times | 30 | ||
| 15 | Mechanical life (disconnector / breaker / ground switch) | 3000/10000/3000 | |||
| 16 | Allowable wear accumulated thickness of movable and static contacts | mm | 3 | ||
| 17 | Rated closing operating voltage | V | AC24/48/110/220 DC24/48/110/220 | ||
| 18 | Rated opening operating voltage | ||||
| 19 | Rated voltage of energy storage motor | V | AC24/48/110/220 DC24/48/110/220 | ||
| 20 | Rated power of energy storage motor | W | 70 | ||
| 21 | Storage time | s | ≤15 | ||
| 22 | Contact pitch | mm | 9±1 | ||
| 23 | Ultra travel | 3.5±1 | |||
| 24 | Contact closing bounce time | ms | ≤2 | ||
| 25 | Three-phase opening and closing dissynchronization | ≤2 | |||
| 26 | Opening time (rated voltage) | ≤40 | |||
| 27 | Closing time (rated voltage) | ≤60 | |||
| 28 | Average switching speed (contact just divided~6mm) | m/s | 0.9~1.3 | ||
| 29 | Average closing speed (6mm ~ contact just closing) | 0.5~1.1 | |||
| 30 | Bounce amplitude of contact | mm | ≤2 | ||
| 31 | Contact pressure of contact surface | N | 2400±200(20-25kA) 3100+200(31.5kA) | ||
| 32 | Rated operating sequence | 0-0.3S-CO-180S-CO | |||
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