- info@henegia.eletric.it
- Pericle Fazzini Square 8 San Benedetto del Tronto ITALY
The HE Air Series is an eco-friendly, gas-insulated ring main unit (RMU) from Henegia Group. It combines international advanced technology with years of specialized expertise in fully sealed switchgear design.
Featuring an innovative design and leading manufacturing processes, the product embodies energy conservation and environmental protection throughout its entire lifecycle—from production and use to end-of-life recycling.
Its key advantages include a compact footprint, maintenance-free operation, ease of use, high performance, and superior safety and reliability. As a green and energy-saving solution, it effectively replaces both SF6 and solid-insulation RMUs in power distribution network construction and upgrades.
The product has received authoritative certification from XIHARI Changzhou.
Advanced Sealed Tank DesignAll HV components are permanently sealed within a 304 stainless steel tank using dry air as the primary insulating medium for phase-to-phase, phase-to-earth, and isolation barriers. This fully sealed design ensures complete immunity from external environmental conditions.
Vacuum Interruption TechnologyBoth the circuit breaker and load switch employ vacuum arc-extinguishing technology delivering superior performance and reliability. This vacuum breaker unit replaces traditional load switch-fuse combinations, enabling immediate fault current interruption.
Integrated Safety & Compact DesignEquipped with a dedicated pressure relief channel that safely vents gas under extreme overpressure conditions. Its compact, maintenance-free design allows for installation in space-constrained environments while ensuring operational safety and reliability.
Robust Tank ConstructionThe 3mm 304 stainless steel tank is manufactured using advanced laser cutting and welding equipment from Germany's TRUMPF. Rated to withstand 0.24 MPa gas pressure, it provides guaranteed protection against internal arcing faults while maintaining excellent aesthetics and permanent airtightness.
Precision Leak Testing & Gas HandlingUsing fully automated helium leak detection and gas filling systems from Germany's SEILER, we ensure a maximum leak rate of 0.1% per year with 99.99% pure dry air, supporting a proven 40-year service life under normal operating conditions.
| Item | Unit | Vacuum CB Panel | Load Switch Panel |
|---|---|---|---|
| Rated Voltage | kV | 24 | |
| Rated Frequency | Hz | 50 / 60 | |
| Rated Power-Frequency Withstand Voltage (1 min) | kV | 50 / 60 | |
| Rated Lightning Impulse Withstand Voltage | kV | 125 / 145 | |
| Rated Continuous Current | A | 630 | |
| Rated Short-Time Withstand Current (3 s) | kA | 21 / 54.6 | |
| Rated Peak Withstand Current | kA | 21 / 54.6 | |
| Rated Short-Time Withstand Current of Earthing Circuit (2 s) | kA | 21 / 54.6 | |
| Rated Making Current | kA | 54.6 | |
| Rated Making Current of Earthing Switch | kA | 54.6 | |
| Internal Arc Classification (IAC) | kA/s | 21/1 | |
| Maximum Permissible Gas Leakage Rate | V / V (% / year) | ≤0.1% | |
| Gas Compartment Protection Level | IP Code | IP67 | |
| Enclosure Protection Degree | IP Code | IP54 / IP4X | |
| Rated Short-Circuit Breaking Current | kA | 21 | / |
| Mechanical Endurance | Times | 10000 | 5000 |
| Electrical Endurance | Grade | E2 | E3 |
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