12kV Solid Insulated Ring Main Unit

12kV Solid Insulated Ring Main Unit – Compact, Safe, and Reliable Power Distribution Solution

Product Description:

The 12kV Solid Insulated Ring Main Unit (RMU) is a cutting-edge medium-voltage power distribution product designed for modern energy networks. It offers a highly compact solution that provides protection, monitoring, and control of power-using equipment. With an advanced design, superior safety features, and strong adaptability, this RMU is ideal for various applications, including distribution network transformation, petrochemical industries, mining, high-rise buildings, and more.

This environmentally friendly RMU uses non-toxic insulating mediums like epoxy resin, silicone rubber, and dry air. Its fully modular design allows for flexible combinations, making it a versatile choice for energy distribution. Additionally, it is built to withstand harsh environments, such as high altitudes and low temperatures, while offering a long operational life of over 30 years. Integrated intelligent monitoring systems ensure optimal performance in real time.

Key Features:

• Environmentally Friendly: Utilizes epoxy resin, silicone rubber, and dry air as insulating mediums, emitting no toxic substances.
• Flexible Modular Design: Full modularity with fully insulated, fully shielded, and fully grounded configurations; flexible extension busbars for customized combinations.
• Safety & Reliability: Complete mechanical and electrical interlocks ensure operator safety.
• Durability: Designed for operation in extreme conditions (up to 4000m altitude, -40°C low temperature) with a service life of at least 30 years.
• Intelligent Monitoring: Integrated IT/OT technologies for online real-time monitoring and data-driven insights.
• Compact Design: Small footprint, ideal for constrained spaces in industrial, commercial, or residential settings.

Technical Specifications:

• Voltage Level: 12kV
• Rated Normal Current: 630A
• Insulation Medium: Epoxy resin / Silicone rubber / Dry air
• Service Temperature: -40°C to +55°C
• Altitude: ≤4500m
• Relative Humidity: ≤95%
• Frequency: 50Hz or 60Hz
• Rated Lightning Impulse Withstand Voltage:
  • Directly Earthed: 75kV
  • Across Disconnector: 85kV
• Rated Power Frequency Withstand Voltage:
  • Directly Earthed: 28/42kV
  • Across Disconnector: 32/48kV
• Protection Ratings:
  • Indoor: IP4X
  • Outdoor (Non-Extensible): IP43
  • Mechanical Impact Protection: IK07 (indoor) / IK10 (outdoor)
• Internal Arc Rating: AFLR (20kA/1s)

Circuit Breaker and Load Break Switch Functions:

• Rated Short Time Withstand Current:
  • Main Circuit: 20kA (3s)
  • Earth Switch: 20kA (3s)
  • Earth Circuit: 20kA (1s)
• Rated Peak Withstand Current:
  • Main Circuit: 52kA
  • Earth Switch: 52kA
  • Earth Circuit: 52kA
• Making and Breaking Capacities:
  • Rated Short Circuit Breaking Current: 20kA
  • Rated Short Circuit Making (Peak) Current: 52kA

Mechanical and Electrical Endurance:

• Load Break Switch: M2 (mechanical), E1 (electrical)
• Circuit Breaker: M2 (mechanical), E2 (electrical)
• Earth Switch: M1 (mechanical), E2 (electrical)

Compliance and Standards:

• IEC 62271-100
• IEC 62271-102
• IEC 62271-1
• IEC 62271-200
• IEC 60255
• IEC 60529
• IEC 62271-206

Applications:

• Distribution Network Transformation
• Petrochemical and Iron & Steel Industries
• Mining Operations
• General Enterprises & Public Institutions
• New Residential Villages and High-Rise Buildings

Why Choose the 12kV Solid Insulated RMU?

This RMU is designed for maximum reliability, safety, and efficiency in various power distribution environments. It’s compact yet robust, ensuring optimal performance in challenging settings, making it a top-tier solution for modern energy infrastructures.

Equip your power network with the 12kV Solid Insulated Ring Main Unit for unmatched reliability, flexibility, and long-term performance!