The eco-friendly gas-insulated ring main unit adopts a modular design concept, developed as a new generation of environmentally friendly gas-insulated metal-enclosed switchgear for distribution networks. It is suitable for 12kV/50Hz secondary distribution systems with a rated current of 1250A and below, used for receiving and distributing electric energy, fully complying with the State Grid's "Standardized Design and Customization Scheme for Ring Main Units."

Main Technical Features:

1.High Reliability/Safety

20kA/1s arc-resistant design; integrated switch design with a simple structure, visible breaks, reliable interlocking design, and safe operation.

2.Eco-friendly and Maintenance-free

Uses dry air insulation and vacuum arc extinction, aligning with the "carbon peak and carbon neutrality" goals, maintenance-free, and convenient for operation and maintenance.

3.3D Simulation and Optimized Design

Fully shielded design with uniform electric field, direct-acting three-position switch, insulation performance at zero gauge pressure, and overall partial discharge ≤ 10pC.

4.Strong Adaptability to All-weather Environments

All high-voltage live parts are sealed in the gas chamber, with a gas tank protection rating of IP67, fully shielded expandable busbar, and verified for use at altitudes up to 5000m.

5.Simple Operation and High Intelligence

The circuit breaker and three-position switch support both manual and electric operation functions, fully meeting the State Grid's "Standardized Design and Customization Scheme for Ring Main Units" requirements.

6.Long Mechanical Life

Circuit breaker: 10,000 operations; three-position switch: 5,000 operations.