HV Fully Enclosed Ring Main Unit SF6 Air Insulated Switchgear IP65 Protection

The RM6-12 Series Ring Main Unit is a state-of-the-art, gas-insulated switchgear (GIS) solution designed for medium-voltage secondary distribution networks up to 12kV. This "all-in-one" unit integrates all high-voltage functional parts—including busbars, load break switches, and circuit breakers—within a single, robotically welded stainless steel tank filled with SF6 gas.

The RM6 design is synonymous with reliability. Being fully insulated and fully enclosed, it is completely immune to external environmental factors such as dust, humidity, salt spray, and small animals. This makes it the premier choice for underground substations, wind farm towers, compact urban kiosks, and industrial facilities where space is at a premium and service continuity is critical.

• Total Environmental Immunity: The primary circuit is sealed for life inside a 304L stainless steel gas tank, providing an IP67 rating for the internal live parts. It is virtually maintenance-free for a 30-year service life.

• Ultra-Compact Footprint: By utilizing the superior dielectric properties of SF6 gas, the RM6-12 is significantly smaller than traditional air-insulated switchgear, allowing for installation in tight urban vaults or integrated kiosks.

• Maximum Operational Safety: Features a visible internal earthing switch and a comprehensive "Five-Prevention" mechanical interlocking system. The unit is designed with internal arc-fault containment to protect personnel in the event of a fault.

• Flexible Configurations: Available in "Compact" (all functions in one tank) or "Extensible" (modular units connected by busbar links) formats. Common configurations include NE-IDI, NE-IIDI, and NE-IQI (I: Load Break Switch, D: Direct Cable, Q: Fuse-Switch Combination).

• Smart Grid Ready: Can be equipped with motorized actuators and Remote Terminal Units (RTUs) for real-time monitoring and remote switching via SCADA.

1. Urban Grid Distribution: Reliable ring-main protection for high-density metropolitan residential and commercial zones.

2. Renewable Energy Generation: Ideal for installation inside wind turbine towers or compact solar collection kiosks.

3. Industrial & Mining: Robust power management for facilities with corrosive atmospheres or high dust levels.

4. Infrastructure Projects: Critical power distribution for airports, metropolitan rail transit, and hospital substations.

• Maintenance-Free Longevity: Beyond routine visual inspections of the pressure gauge, the RM6 requires no internal maintenance, significantly reducing the Total Cost of Ownership (TCO).

• High-Precision Manufacturing: Our tanks are fabricated using automated laser welding and undergo a 100% helium leak detection test to ensure a leakage rate of less than 0.1% per year.

• Modular Versatility: We can configure the unit with vacuum circuit breakers (VCB) or fuse-switch combinations to provide tailored protection for transformers up to 2500kVA.

• Global Support: Based in the Wenzhou electrical hub, we provide international logistics support and comprehensive installation manuals for global utility projects.

Q: Can this unit be expanded in the future if more feeders are needed?

A: Yes. If you specify the "Extensible" version, modular units can be joined on-site using specialized busbar connectors without the need for gas handling.

Q: How do I know the gas pressure is safe?

A: Every RM6 unit is equipped with a high-visibility pressure gauge (manometer). Optional auxiliary contacts can be added to provide a remote "low pressure" alarm to your control room.

Q: Is it suitable for coastal areas with high salinity?

A: Absolutely. Because all live parts are sealed in a stainless steel tank, the RM6-12 is the most reliable switchgear for coastal and offshore applications.

RM6-12 series fully insulated and fully enclosed ring network switchgear

RM6-12 series fully insulated fully enclosed ring network switchgear is SF6 gas insulated metal common box type closed switchgear,which can be composed of load switch unit, load switch fuse combination electrical unit, vacuum circuit breaker unit, bus line entry unit and other modules. Using a range of techniques and materials. It has excellent electrical and mechanical properties,little influence by environment and weather, small size, easy to install, easy to operate, no maintenance, and flexible combination. Clear and intuitive design ensures simple and direct operation. Feeder wiring capacity, suitable for a variety of wiring systems.