Gas-Insulated RMU

HP-ELS Eco-Gas Insulated Ring Main Unit

Vacuum-interruption RMU with eco-gas main insulation at zero/micro positive pressure (≤0.02 MPa) — unencapsulated main circuit, built-in data acquisition and online monitoring for smart distribution.

Factory-direct supply Worldwide delivery & export documentation 12-month warranty · extended options
  • Rated voltage · cabinet module (C load switch / V vacuum breaker / F load-switch + fuse combination) · operati
At a glance

Built to perform, year after year

12kV
Rated voltage
42 / 48kV
1 min power-frequency withstand
75 / 85kV
Lightning impulse withstand
630 / 125 / 630A
Rated current (C / F / V)
A closer look

Engineered around safety, efficiency and uptime

Overview

The HP-ELS series uses vacuum interrupters for arc quenching and eco-friendly gas as the main insulating medium with a small number of solid insulating supports. The main circuit is completely unencapsulated; in normal operation the tank works at zero gauge or slight positive pressure (≤ 0.02 MPa), while phase-to-earth and phase-to-phase insulation meets air-insulation requirements at zero gauge pressure.

Overview

Integrating data acquisition and control, data processing and storage, online monitoring and advanced analysis, the unit enables intelligent supervision of the distribution network — keeping it safe, reliable and efficient, and supporting remote monitoring, control and management for grid optimisation and energy saving. Widely applicable to transportation, factories, hospitals, schools, buildings, residential communities and commercial offices.

Model designation

Rated voltage · cabinet module (C load switch / V vacuum breaker / F load-switch + fuse combination) · operating mode · rated current · breaking current

Service conditions

Ambient temperature −25 °C … +40 °C, 24 h average ≤ 35 °C
Relative humidity: 24 h average ≤ 95 %, monthly ≤ 90 %
Altitude ≤ 2000 m (state at ordering); special conditions on request

Technical specifications

Full specifications

Ratings (C / F / V modules)
Rated voltage
12 kV
1 min power-frequency withstand
42 / 48 kV
Lightning impulse withstand
75 / 85 kV
Rated current (C / F / V)
630 / 125 / 630 A
Closed-loop breaking current (C)
630 A
Cable-charging breaking current (C)
135 A
Earth-fault breaking current (C)
200 A
Short-circuit breaking current (F / V)
31.5 / 25 kA
Rated transfer current (F)
1500 A
Max fuse rating (F)
125 A

Specifications are representative and may vary by configuration and region. Final figures are confirmed on the project datasheet.

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