SF6-free Indoor g3 Load Break Switch 36kV
Key attributes
| Brand | ROCKWILL |
| Series | RLS |
| Rated voltage | 36KV |
| Rated current | 630/800A |
| Lightning impulse withstand voltage | 185/215KV |
| Rated frequency | 50/60HZ |
Description
Indoor high-voltage g3 load-break switches adopt g3 gas (an eco-friendly alternative to sulfur hexafluoride (SF6)) as the arc-extinguishing and insulating medium, integrating three-position contacts for closing, opening, and earthing. They feature compact size, easy installation and operation, and strong environmental adaptability.
Indoor high-voltage g3 load-break switches and g3 load-break switch-fuse combinations can protect and control power supply and substation equipment, and are particularly suitable for ring main units, cable branch cabinets, and distribution switching substations.
This product complies with IEC international standards and Rockwill g3 gas specifications, with a Global Warming Potential (GWP) less than 1% of that of sulfur hexafluoride (SF6).
Product Showcase Video
Key Benefits
- Performance: Identical rated parameters, equipment footprint, and operating temperature range as SF6.
- Environment: GWP over 99% lower than SF6.
- Safety: Non-toxic, same safety class as SF6, compliant with REACH regulation.
- Operation: Compatible with existing gas handling carts and standard high-voltage (HV) tools.
Technical Specifications
| Parameter | Value |
|---|---|
| Rated voltage (Um) | 36 kV |
| Rated frequency | 50/60 Hz |
| Rated normal current | 630 / 800 A |
| Insulation level | |
| Power frequency withstand voltage (phase-to-earth / across open gap) | 95 / 110 kV |
| Lightning impulse withstand voltage (phase-to-earth / across open gap, peak) | 185 / 215 kV |
| Rated active load breaking current | 50 A |
| Rated closed-loop breaking current | 50 A |
| Rated transfer current (with fuse-combination) | 1,000 A |
| Rated short-circuit making current (peak) | 125 kA |
| Rated short-time withstand current (2 s, RMS) | 50 kA |
| Rated cable-charging breaking current | 50 A |
| Rated line-charging breaking current | 10 A |
| Rated earth-fault breaking current | 20 A |
| Mechanical endurance (close-open cycles) | 2,000 cycles |
Environmental and Operating Conditions
| Parameter | Condition |
|---|---|
| Ambient temperature | –40 °C to +60 °C (extended range) |
| Daily average relative humidity | ≤ 90 % |
| Maximum installation altitude | ≤ 2,500 m (above 1,000 m requires insulation reinforcement; consult manufacturer) |
g3 vs SF6 Quick Comparison
| Parameter | SF6 | g3 |
|---|---|---|
| GWP (relative to CO2) | 23,500× | < 1% of SF6 |
| Atmospheric lifetime | 3,200 years | Short |
| Performance | Excellent | Identical |
| Equipment footprint | Standard | Identical |
| Safety class | Non-toxic | Non-toxic |
Application Scenarios
- Urban smart distribution networks, including ring-main power supply systems for downtown areas, residential communities, and commercial zones.
- Low-carbon new-energy power projects such as photovoltaic power stations and wind-powered substations.
- Industrial parks, chemical plants, and manufacturing bases requiring safe and eco-friendly power control and protection.
- Power supply systems for data centers, large-scale public buildings, and green buildings.
- Environment-sensitive regions and plateau power-supply projects with strict low-emission requirements.
Product Dimension
