HTXGN-12Environmentally Friendly Gas-Insulated Ring Main Unit (RMU)

HTXGN-12 Environmentally Friendly Gas-Insulated Ring Main Unit (RMU) is a distribution switchgear that utilizes vacuum interrupters for arc extinction, with eco-friendly gas as the primary insulation medium and minimal solid insulation supports. The main circuit is completely unencapsulated. During normal operation, it maintains zero gauge pressure or slight positive pressure (gas tank pressure ≤0.02MPa), while meeting all air insulation requirements for phase-to-phase and phase-to-ground insulation at zero gauge pressure.

HTXGN-12 Series Standard Cabinet Modules Include:
  • C - Load Switch Module
  • V - Vacuum Circuit Breaker Module
  • F - Load Switch-Fuse Combination Module
  • Fully Custom
  • Expedited Production Processing

Key Technical Features

  • Vacuum interruption technology
  • Eco-friendly gas insulation (dry air/nitrogen)
  • No epoxy resin encapsulation
  • Slight positive pressure operation (≤0.02MPa)
  • Complies with IEC 62271-200 standard

Normal Service Conditions 

1.Ambient Temperature

·Maximum: +40℃

·Minimum: -25℃

·24-hour average: <35℃

2Ambient Humidity

·Maximum 24-hour average relative humidity ≤95%

·Monthly average ≤90%

3Altitude

·Standard type: ≤1500m (at normal gas pressure)
·For >1500m, special requirements must be specified

4Special ConditionsFor operating conditions beyond normal ranges, please consult with our company in advance.

Dimensions

Model Number and Designation Explanation: HTXGN  -  ¨  ¨  /  ¨  ¨  -  ¨ ①     ②  ③     ④  ⑤    ⑥
Product Model Operating Mechanism Type
Rated Voltage Rated Current
Cabinet Type Module Breaking Current
Main Technical Parameters :  
No. Item C Module F Module V Module 
Load Switch Switch-Fuse VCB Isolation/ Ground Switch
1 Rated Voltage / kV 12
2 1min Power Frequency Withstand Voltage/kV 42/48
3 Lightning Impulse Withstand Voltage/kV 75/85
4 Rated Current/A 630 125* 630 630
      5 Breaking Capacity
Closed-loop Breaking Current/A 630
Cable Charging Breaking Current/A 135
5% Active Load Breaking Current/A 31.5
Earth Fault Breaking Current/A 200
Short-circuit Breaking Current/kA 31.5* 25
6 Rated Transfer Current/A 1500
7 Max. Fuse Current/A 125
8  Rated Short-circuit Making Current/kA 63 80* 25
9 Short-time Withstand Current/kA 25 25 25
10 Short-circuit Duration/s 4 4 4
11 Mechanical Operations 5000 5000 5000 5000
12 Gas Pressure/MPa 0.025(20°C)
13  Annual Leakage Rate ≤0.05%
14  Arc Extinction Method Vacuum
15  Protection Degree  IP67/3X (Gas Tank/Enclosure)
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  • Industrial Enclosure

    Post Haec Gallus Hierapolim Profecturus

    Localibus subinde medetur aerumnis, disponi quicquam statuit vel ex provinciis alimenta transferri conterminis, sed consularem Syriae Theophilum prope.

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    • 1200
      Enclosures
    • 7 days
      Production Time
  • Industrial Enclosure

    Post Haec Gallus Hierapolim Profecturus

    Localibus subinde medetur aerumnis, disponi quicquam statuit vel ex provinciis alimenta transferri conterminis, sed consularem Syriae Theophilum prope.

    Learn More
    • 1200
      Enclosures
    • 7 days
      Production Time
  • Industrial Enclosure

    Post Haec Gallus Hierapolim Profecturus

    Localibus subinde medetur aerumnis, disponi quicquam statuit vel ex provinciis alimenta transferri conterminis, sed consularem Syriae Theophilum prope.

    Learn More
    • 1200
      Enclosures
    • 7 days
      Production Time
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