The 7S-R6S-B is a high-performance electric operating mechanism designed for SF6 gas-insulated ring main units (RMUs). It delivers reliable control of three-position load break switches and earthing switches, with mechanical interlocks, dual operation modes, and a mechanical lifespan of ≥10,000 cycles. Ideal for medium voltage switchgear, smart grid automation, and industrial power distribution.
1. Integrated Three-Position Control: Manages close, open, and earth operations with robust mechanical interlocks, fully complying with “five-prevention” safety standards to eliminate misoperation risks.
2. Dual Operation Modes: Supports remote electric control (for smart grid automation) and manual emergency operation, ensuring flexibility during power distribution and maintenance.
3. High-Reliability Mechanical Design: All-metal construction with hardened gears and interlock cams, offering a mechanical lifespan of ≥10,000 operations for long- term, low-maintenance performance.
4. Real-Time Position Feedback: Built-in auxiliary contacts and visual position indicators transmit status signals to SCADA systems, enabling remote monitoring and rapid fault diagnosis.
5. Compact Modular Design: Fits seamlessly into standard 12kV/24kV gas-insulated RMU compartments, maximizing compatibility with global switchgear layouts.
| Parameter | Specification |
|---|---|
| Rated Voltage | 12kV / 24kV (medium voltage) |
| Control Voltage | AC220V / DC110V / DC220V (customizable) |
| Mechanical Life | ≥10,000 operations |
| Operation Time | ≤0.3s (closing/opening) |
| Interlock Logic | Three-position interlock + earthing switch interlock |
| Protection Class | IP54 (for indoor/outdoor RMU applications) |
| Ambient Temperature | -25°C ~ +40°C |
| Altitude | ≤2000m |
| Compliance | IEC 62271-102, GB/T 11022 |
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