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.
- Rated voltage · cabinet module (C load switch / V vacuum breaker / F load-switch + fuse combination) · operati
A cleaner, more reliable approach to MV switching
The HP-ELS series replaces SF₆ with environmentally friendly insulating media while keeping the proven safety and performance utilities expect from gas-insulated switchgear.
Product Overview
The HP-ELS-12/24/40.5 eco-friendly gas-insulated ring main unit uses vacuum interrupters for arc extinction, with eco-friendly gas as the main insulating medium plus a small number of solid insulating supports; the main circuit is completely unencapsulated. Under normal operation it runs at zero gauge or slight positive pressure (gas-tank pressure ≤0.02 MPa), and its phase-to-earth and phase-to-phase insulation meets air-insulation requirements at zero gauge pressure.
Intelligence & Applications
Integrating data acquisition and control, data processing and storage, and online monitoring with advanced analysis, the product enables online intelligent monitoring and management of the distribution network — delivering remote monitoring, control and management to meet grid optimisation, power-consumption safety, energy management and energy-saving needs. It is widely used in intelligent distribution scenarios such as transport hubs, factories, hospitals, schools, buildings, residential communities and commercial offices.
Technical specifications
Headline ratings at a glance, followed by the full technical data sheet. Exact values are confirmed per project configuration.
| Parameter | Value |
|---|---|
| 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 |
Reading the model designation
Generated automatically from each product's model code.
Overall dimensions
Cabinet height, width and depth options. Selection depends on cable type and incoming / outgoing configuration.
| Item | Dimensions (mm) | Scope of application |
|---|---|---|
| 1 Circuit | 420 / 380 / 420 | Per drawing A/B/C (mm) |
| 2 Circuits | 808 / 768 / 808 | Per drawing A/B/C (mm) |
| 3 Circuits | 1196 / 1156 / 1196 | Per drawing A/B/C (mm) |
| 4 Circuits | 1584 / 1544 / 1584 | Per drawing A/B/C (mm) |
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