7.2-12kV Four-Pole AC Vacuum Contactor
This AC vacuum contactor is composed of an electrical insulating frame, metal base, and electromagnetic systems. It also features a permanent magnet, power modules, auxiliary switches, and vacuum interrupters.
Technical Specifications
Product Overview
High-Voltage Switching Solution
The 7.2-12kV Four-Pole AC Vacuum Contactor is a robust switching device engineered for reliable performance in medium-voltage electrical systems. Utilizing vacuum interrupters for advanced arc extinction, this unit ensures a long service life with minimal maintenance requirements. It is specifically designed for demanding applications that involve frequent switching operations, such as motor starting, capacitor bank switching, and transformer switching.
Technical Specifications
Rated Voltage
7.2 kV
Minimum Rated Voltage
12 kV
Maximum Rated Voltage
- Pole Configuration
- 4 poles
Operating Mechanism
Operational Process
- Electromagnetic coil activation drives armature
- Crutch rotation opens main contact in vacuum interrupter
- Auxiliary switch cuts power to electromagnetic coil
- Permanent-magnet maintenance engagement
- Energy storage module discharge for degaussing
- Opening spring facilitates main contact break
Applications
- Typical Applications
- Motor StartingCapacitor Bank SwitchingTransformer Switching
Key Features
Performance Advantages
Vacuum Arc ExtinctionLong Service LifeMinimal MaintenanceFrequent Switching CapabilityEnhanced Isolation
