ELN Sustainable Dry Air Insulated Ring Main Unit

The ELN-12 Series Air-Insulated Ring Main Unit (RMU) offers an advanced, eco-friendly solution for reliable power distribution. Built on the proven framework of the ELE-12 series, it utilizes dry air as an insulating medium, providing improved environmental sustainability and operational efficiency compared to traditional SFinsulated RMUs. Ideal for use in urban, industrial, and commercial power networks, this air-insulated RMU minimizes environmental impact while delivering high performance and durability.



 

 

 

  • ELN Series Ring Main Unit Structure

 


 

 

 

 

  • ELN Series Ring Main Unit Features
 

 

 

 

 

 

 

 

 

  • Optional Unit

 

 

 

 

 

 

 

 

 

  • Specifications

 

Model 12kV Dry-air Insulated RMU
Load Switch Cabinet Circuit Breaker Cabinet PT Isolator Cabinet
Rated Voltage 12kV
Rated Frequency 50Hz
Rated Current 630A
Rated Power Frequency Withstand Voltage (1min) 42/48kV
Rated Lightning Impulse Withstand Voltage (Peak Value) 75/85kV
Electrical Life —— E2 ——
Mechanical Life 10000 10000 5000
Rated Short-Circuit Breaking Current —— 20/31.5kA ——
Rated Closing Current (Peak) 50kA 50/80kA 50kA
Rated Peak Withstand Current of Main Circuit and Ground Circuit 50kA 50/80kA 50kA
Rated Short-Time Withstand Current of Ground Circuit (2s) 20kA 20/31.5kA 20kA
Rated Short-Time Withstand Current of Main Circuit (4s) 20kA 20/31.5kA 20kA
Internal Arc Classification (IAC class) AFLR, 20kA, 1s
Rated Working Pressure (20°C Gauge) 0.02MPa
Minimum Working Pressure (20°C Gauge) 0.01MPa
Enclosure Ingress Protection Rating IP4X
Gas Chamber Ingress Protection Rating IP67
Annual Gas Leakage Rate ≤0.01%
Dimensions(W*D*H)(excluding door) 420*850*2000mm 420/600*850*2000mm 600*850*2000mm

 

 

 

 

 

 

 

  • Application Scenarios

 

 

 

 

 

 

 



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