
Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
GW9 Outdoor HV Isolator Switch 10-20kV 400-1250A: Hookstick type, three-phase AC 50Hz, transmission line non-load shifting, busbar maintenance, circuit breaker isolation, copper aluminum annex, stainless steel firmware, hot plating zinc base, anti-dirt resistance corrosion, 20-31.5kA withstand, 50-80kA peak.
Advanced GW9 Hookstick Type Isolator Switch Series: Outdoor high voltage isolator switch rated 10kV/15kV/20kV suitable for three-phase AC 50Hz outdoor high-voltage electrical equipment, designed for high voltage transmission line non-load shifting and maintenance of high-voltage busbar, electrical equipment such as circuit breakers and electrical isolation of live high voltage line, can divide small capacitor and inductor current, rated current 400-1250A with rated short-time withstand current 20-31.5kA (4s) and rated peak withstand current 50-80kA.
Simple Structure and Superior Anti-Corrosion Features: GW9 incorporates simple and reasonable structure design using copper and aluminum annex, stainless steel tight firmware and hot plating zinc base providing good anti-dirt and resistance corrosion capacity, reliable performance with light weight and convenient installation requiring no periodic cleaning and maintenance, operates with max working voltage 12-24kV, 1min power frequency withstand voltage 42-79kV to earth/phase, lightning impulse withstand voltage 75-145kV peak to earth/phase, providing low-cost convenient outdoor high-pressure electrical equipment for city and rural 10-20kV distribution line segment, branch and maintenance section obvious disconnect points.

| GW9 Outdoor HV Isolator Switch Specifications | Parameter | Unit |
|---|---|---|
| Brand | Bepto Insulation Systems | – |
| Model Number | GW9-10 / GW9-15 / GW9-20 | – |
| Category | Switchgear & High Voltage Disconnector | – |
| Product Type | Outdoor HV Isolator Switch (10-20kV 400-1250A Hookstick Type) for Transmission Line Non-Load Shifting with Copper Aluminum Annex and Anti-Dirt Resistance Corrosion Capacity | – |
| Core Technology | Three-Phase AC 50Hz Outdoor High-Voltage Electrical Equipment + High Voltage Transmission Line Non-Load Shifting + High-Voltage Busbar Maintenance + Circuit Breakers Electrical Isolation + Live High Voltage Line Isolation + Small Capacitor and Inductor Current Division + Simple and Reasonable Structure Design + Copper and Aluminum Annex + Stainless Steel Tight Firmware + Hot Plating Zinc Base + Good Anti-Dirt and Resistance Corrosion Capacity + Reliable Performance + Light Weight + Convenient Installation + No Periodic Cleaning and Maintenance + City and Rural 10-20kV Distribution Line + Segment/Branch/Maintenance Section Disconnect Points | – |
| Rated Voltage Options | 10kV / 15kV / 20kV | kV |
| Max Working Voltage | 12kV / 17.5kV / 24kV | kV |
| Rated Frequency | 50 | Hz |
| Rated Current Options | 400A / 630A / 1250A | A |
| Installation Type | Outdoor | – |
| Current Type | AC (Alternating Current) | – |
| Phases | Three-Phase | – |
| Hookstick Type | Yes (Hookstick Type Operation) | – |
| Transmission Line Non-Load Shifting | Yes (For High Voltage Transmission Line Non-Load Shifting) | – |
| High-Voltage Busbar Maintenance | Yes (Maintenance of High-Voltage Busbar) | – |
| Circuit Breakers Isolation | Yes (Electrical Equipment Such as Circuit Breakers Isolation) | – |
| Live High Voltage Line Isolation | Yes (Electrical Isolation of Live High Voltage Line) | – |
| Small Capacitor and Inductor Current Division | Yes (Can Divide Small Capacitor and Inductor Current) | – |
| Simple and Reasonable Structure | Yes (Structure Design Simple and Reasonable) | – |
| Copper and Aluminum Annex | Yes (Used Copper and Aluminum Annex) | – |
| Stainless Steel Tight Firmware | Yes (Stainless Steel Tight Firmware) | – |
| Hot Plating Zinc Base | Yes (Hot Plating Zinc Base) | – |
| Anti-Dirt Capacity | Yes (Good Anti-Dirt Capacity) | – |
| Resistance Corrosion Capacity | Yes (Good Resistance Corrosion Capacity) | – |
| Reliable Performance | Yes (Performance Reliable) | – |
| Light Weight | Yes (Weight Light) | – |
| Convenient Installation | Yes (Installation Convenient) | – |
| No Periodic Cleaning and Maintenance | Yes (Without Periodic Cleaning and Maintenance) | – |
| City and Rural Distribution Line | Yes (City and Rural 10-20kV Distribution Line) | – |
| Segment/Branch/Maintenance Section | Yes (For Segment, Branch, Maintenance Section Disconnect Points) | – |
| Low Cost | Yes (Price Low Convenient) | – |
| No | Type | GW9-10 | GW9-15 | GW9-20 |
|---|---|---|---|---|
| 1 | Rated Voltage (kV) | 10 | 15 | 20 |
| 2 | Max Working Voltage (kV) | 12 | 17.5 | 24 |
| 3 | Rated Frequency (Hz) | 50 | 50 | 50 |
| Rated Current (A) | 400 | 630 | 1250 | |
| 4 | Rated Short-Time Withstand Current and Time (kA/s) | 20/4 | 25/4 | 31.5/4 |
| 5 | Rated Peak Withstand Current (kA) | 50 | 63 | 80 |
| 6 | 1min Power Frequency Withstand Voltage (Effective Value) | |||
| To Earth (kV) | 42 | 45 | 65 | |
| To Phase (kV) | 48 | 65 | 79 | |
| 7 | Lightning Impulse Withstand Voltage (Peak Value) | |||
| To Earth (kV) | 75 | 105 | 125 | |
| To Phase (kV) | 85 | 120 | 145 |
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.