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The (H)GW9-12 and GW10-15 series outdoor high-voltage AC isolating switches are single-phase high-voltage electrical equipment primarily used in three-phase AC power systems with a voltage below 15kV and a frequency of 50Hz. These switches are designed to switch circuits under no-load conditions and provide electrical isolation during the maintenance and repair of high-voltage buses, circuit breakers, and other electrical equipment.
The isolating switch consists of a base (which may include a hot-dip galvanized chassis or stainless steel chassis), porcelain insulators or silicone rubber insulators, and conductive components. The structure is designed with good anti-pollution capabilities and corrosion resistance, making it suitable for outdoor use in harsh environments. The device features a self-locking function, ensuring reliable operation. All standard parts are made of stainless steel to enhance durability and oxidation resistance.
•Rated Voltage: 12kV / 15kV
•Rated Frequency: 50Hz
•Rated Current: 630A / 1250A
•Rated Short-time Withstand Current: 20kA (4s)
•Rated Peak Withstand Current: 50kA / 63kA
•Rated Short-time Power Frequency Withstand Voltage: 42kV (interphase, to earth dry) / 48kV (fracture dry)
•Rated Lightning Impulse Withstand Voltage: 75kV (interphase, to earth) / 85kV (fracture)
•Mechanical Life: 3000 times
•Pollution Grade: e-level
•Minimum Creepage Distance: ≥372mm
•Altitude: Not more than 1000m (If altitude exceeds 1000m, the insulation level should be adjusted accordingly)
•Ambient Temperature: -40°C to +45°C
•Wind Speed: Not more than 0.5m/s
•Pollution Level: e-level
•Average Daily Humidity: Not more than 95%, Monthly average humidity not exceeding 80%
•Earthquake Resistance: Horizontal acceleration 0.3m/s², Vertical acceleration 0.15m/s²
The switch is easy to install with bolt fixation. Regular inspection of contact points and insulation conditions is recommended to ensure long-term operational safety, especially when used in harsh environments.
These specifications were compiled from various reliable sources .
(H)GW9-12 Technical Parameters | |||
Rated frequency | Hz | 50 | |
Rated voltage | kV | 12 | |
Rated current | A | 630(250) | |
Rated short-time withstand current and duration | kA/s | 20(25)/4 | |
Rated peak withstand current | kA | 50(63) | |
Rated short-time power frequency withstand voltage | Between phases and to ground (dry test) | kV/min | 42/1 |
Fracture (dry test) | kV/min | 48/1 | |
Between phases, to ground (wet test) | kV/min | 30/1 | |
Fracture (wet test) | kV/min | 36/1 | |
Lightning impulse withstand voltage | Phase, to ground | kV | 75 |
Fracture | kV | 85 | |
Loop resistance | μΩ | ≤80 | |
Mechanical life | cycles | 3000 | |
Filth Level | e(level) | ||
Creepage distance | mm | ≥372 | |
The (H)GW9-12 and GW10-15 series outdoor high-voltage AC isolating switches are single-phase high-voltage electrical equipment primarily used in three-phase AC power systems with a voltage below 15kV and a frequency of 50Hz. These switches are designed to switch circuits under no-load conditions and provide electrical isolation during the maintenance and repair of high-voltage buses, circuit breakers, and other electrical equipment.
The isolating switch consists of a base (which may include a hot-dip galvanized chassis or stainless steel chassis), porcelain insulators or silicone rubber insulators, and conductive components. The structure is designed with good anti-pollution capabilities and corrosion resistance, making it suitable for outdoor use in harsh environments. The device features a self-locking function, ensuring reliable operation. All standard parts are made of stainless steel to enhance durability and oxidation resistance.
•Rated Voltage: 12kV / 15kV
•Rated Frequency: 50Hz
•Rated Current: 630A / 1250A
•Rated Short-time Withstand Current: 20kA (4s)
•Rated Peak Withstand Current: 50kA / 63kA
•Rated Short-time Power Frequency Withstand Voltage: 42kV (interphase, to earth dry) / 48kV (fracture dry)
•Rated Lightning Impulse Withstand Voltage: 75kV (interphase, to earth) / 85kV (fracture)
•Mechanical Life: 3000 times
•Pollution Grade: e-level
•Minimum Creepage Distance: ≥372mm
•Altitude: Not more than 1000m (If altitude exceeds 1000m, the insulation level should be adjusted accordingly)
•Ambient Temperature: -40°C to +45°C
•Wind Speed: Not more than 0.5m/s
•Pollution Level: e-level
•Average Daily Humidity: Not more than 95%, Monthly average humidity not exceeding 80%
•Earthquake Resistance: Horizontal acceleration 0.3m/s², Vertical acceleration 0.15m/s²
The switch is easy to install with bolt fixation. Regular inspection of contact points and insulation conditions is recommended to ensure long-term operational safety, especially when used in harsh environments.
These specifications were compiled from various reliable sources .
(H)GW9-12 Technical Parameters | |||
Rated frequency | Hz | 50 | |
Rated voltage | kV | 12 | |
Rated current | A | 630(250) | |
Rated short-time withstand current and duration | kA/s | 20(25)/4 | |
Rated peak withstand current | kA | 50(63) | |
Rated short-time power frequency withstand voltage | Between phases and to ground (dry test) | kV/min | 42/1 |
Fracture (dry test) | kV/min | 48/1 | |
Between phases, to ground (wet test) | kV/min | 30/1 | |
Fracture (wet test) | kV/min | 36/1 | |
Lightning impulse withstand voltage | Phase, to ground | kV | 75 |
Fracture | kV | 85 | |
Loop resistance | μΩ | ≤80 | |
Mechanical life | cycles | 3000 | |
Filth Level | e(level) | ||
Creepage distance | mm | ≥372 | |
