
Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
SF6-12/437 Gas Insulated Bushing: High-performance 12kV fuse insulating cylinder for switchgear and RMU, 75kV lightning protection, 42kV withstand, 1.0×10⁻⁹ Pa·m³/s ultra-low leakage.
High Performance SF6-12/437 Gas Insulated Bushing: Premium SF6-12/437 model gas insulated bushing featuring high-performance design specifically engineered for 12kV dry sulfur hexafluoride inflatable switchgear and ring main units in critical power distribution systems, delivering exceptional electrical insulation with 42kV power frequency withstand and 75kV lightning impulse protection, ensuring ultra-low leakage rate of 1.0×10⁻⁹ Pa·m³/s for sealed SF6 gas compartments in demanding industrial, utility, and infrastructure applications requiring maximum reliability.
Superior Fuse Insulating Cylinder Engineering: SF6-12/437 incorporates advanced epoxy resin casting with precision surface-treated center conductor ensuring superior mechanical strength, enhanced gas-tight sealing performance, and extended service life, engineered for reliable operation in harsh environments and critical 12kV inflatable switchgear systems, fully compatible with busbar assemblies, plug connectors, and sealing rings to provide robust integration solution for heavy-duty SF6 gas insulated equipment and mission-critical ring main unit installations.
Mission-Critical Switchgear Integration: SF6-12/437 model supports high-reliability ring main units and SF6 switchgear installations with UL94 V1 flame retardant rating, 105±5°C glass transition temperature, and superior dielectric properties including ≤0.2% hydroscopicity, 1.0×10¹⁴Ω insulation resistance, and ≥18kV/mm disruptive strength for reliable operation in demanding industrial power distribution, utility substations, critical infrastructure, and heavy-duty electrical equipment applications requiring maximum uptime and performance.

| Selection | Drawing No. |
| SF6-12/437 | 5RA12.013.042 |
| Category | Parameter | Value | Unit |
|---|---|---|---|
| Technical Parameter | PF | 42 | kV/1min |
| Technical Parameter | PD | 1.1Ur≤3 | pC |
| Technical Parameter | Flame Retardant Rating | V1 (Special Requirements) | UL94 |
| Technical Parameter | Tg | 105±5 | ℃ |
| Technical Parameter | Lightning Impulse | 75 | kV |
| Technical Parameter | Leakage Rate | 1.0×10⁻⁹ | Pa·m³/s |
| Technical Parameter | Color | Red | — |
| Raw Material Parameter | Hydroscopicity | ≤0.2 | % |
| Raw Material Parameter | Dielectric Loss | 0.01 | — |
| Raw Material Parameter | Insulation Resistance | 1.0×10¹⁴ | Ω |
| Raw Material Parameter | Disruptive Strength | ≥18 | kV/mm |
| Raw Material Parameter | Arc Resistance | 182 | s |
| Raw Material Parameter | Impact Strength | ≥7 | kJ/m² |
| Raw Material Parameter | Bending Strength | ≥110 | N/mm² |
Bepto is a leading Chinese company in electrical insulation, focused on developing advanced solutions for future power systems. We support transmission and distribution safety and growth, with long-term partners including State Grid, ABB, Schneider, Siemens, and GE. Our services reach clients in over 22 countries.

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Bepto focuses on the global market and provides our clients with products suitable for the local market:
Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.