SRM-12 Fully insulated enclosed ring main unit

Product Overview:

The SRM-12 fully insulated enclosed Ring Main Unit (RMU) is a state-of-the-art medium voltage switchgear designed for use in 12kV electrical distribution systems. This RMU provides reliable and efficient protection, control, and distribution of electrical power. It is ideal for applications in urban and industrial power grids, ensuring the safety and stability of the electrical network.

Structural Features:

1. Fully Insulated Design:
   • Features a fully insulated design that enhances safety and reliability, preventing accidental contact with live parts.
2. Enclosed Structure:
   • The enclosed structure provides protection against dust, moisture, and other environmental contaminants, ensuring long-term durability and performance.
3. Compact and Modular:
   • The compact, modular design allows for easy installation and integration into various switchgear configurations.
4. SF6 Gas Insulation:
   • Utilizes SF6 gas for excellent insulation properties and reliable arc extinguishing performance.
5. High-Quality Materials:
   • Constructed from robust materials to withstand harsh environmental conditions and mechanical stress.

Installation Method:

1. Site Preparation:
   • Ensure the installation site is clean, dry, and free from dust and other contaminants.
2. Mounting:
   • Securely mount the RMU on a stable and rigid surface using the provided mounting brackets and hardware.
3. Electrical Connections:
   • Connect the incoming and outgoing cables to the designated terminals, ensuring tight and secure connections. Follow the wiring diagram provided with the RMU for correct electrical connections.
4. Grounding:
   • Ensure proper grounding of the RMU to prevent electrical hazards. Connect the grounding terminal to the panel or switchgear’s grounding busbar.
5. Testing:
   • After installation, perform insulation resistance and continuity tests to ensure proper installation and functionality. Verify the operation of the RMU by performing open and close operations several times.

Applicable Environmental Conditions:

1. Temperature Range:
   • Operating temperature: -25°C to +40°C
   • Storage temperature: -30°C to +40°C
2. Altitude:
   • Suitable for altitudes up to 1000 meters.
3. Humidity:
   • Daily average relative humidity: ≤95%
   • Monthly average relative humidity: ≤90%
4. Water Vapor Pressure:
   • Daily average: ≤2.2×10³MPa
   • Monthly average: ≤1.8×10³MPa
5. Seismic Resistance:
   • Capable of withstanding earthquakes with a grade less than Degree 8.
6. Air Quality:
   • The ambient air should not be significantly polluted by dust, smoke, corrosive or flammable gases, vapors, or salt.