1. Gas Tank
2. Cable Room
3. Pressure Relief Channel
4. Control Room
5. Protection Control Unit
6. Gas Tank Pressure Meter
7. Disconnector Operating Mechanism
8. Circuit Breaker Operating Mechanism
9. Three-Position Disconnector
10. Vacuum Circuit Breaker
11. Top Connection Busbar Bushing
12. Busbar
13. Ring Current Transformer
14. External Cone Cable Terminal
15. Door Panel
16. Lintel

The HEI MV Eco-friendly Ring Main Unit (RMU) is a medium-voltage switchgear solution designed for efficient and sustainable power distribution. It is engineered to provide reliable switching, protection, and control for electrical networks in urban, industrial, and utility applications.

This RMU incorporates eco-friendly insulation materials, reducing the environmental impact compared to traditional SF6 gas-insulated switchgear. Its compact design ensures easy installation and maintenance, making it ideal for use in confined spaces. With high safety standards, durability, and energy efficiency, the HEI MV Eco-friendly RMU supports modern electrical distribution networks while minimizing carbon footprints.