Closing Operation
Closing spring charges via the operating mechanism; energy releases on completion to achieve high-speed closing of the contact knife.
GreenPower
GPFN7-12kV Indoor High Voltage AC Load Break Switch
Rated Voltage12 kV
Rated Current400 / 630 A
Arc ExtinctionGas-Producing Type
InstallationIndoor
Product Overview
GPFN7 AC high voltage load switch is a new type of gas-producing indoor high voltage load switch. It is suitable for three-phase AC power system with AC 50Hz and rated voltage of 12kV, used for breaking load current and closing short-circuit current.
Key Features
Opening And Arc Extinguishing
Main contact knife disconnects first; arc contact knife breaks the circuit instantly, generating gas to extinguish the arc.
Automatic Tripping Device
Automatically opens when the current-limiting fuse blows; can only be reclosed after re-buckling.
Earthing Switch Interlocking
Mechanically interlocked with the earthing switch to prevent mis-opening and mis-closing.
Electric Opening Device
Can be equipped with an electric opening device to realise remote electric opening.
Technical Specifications
| Rated Voltage | 12 kV |
|---|---|
| Max. Voltage | 12 kV |
| Rated Current | 400 A / 630 A |
| Power Frequency Withstand Voltage (1 min) | 42 / 48 kV |
| 4s Thermal Stable Current (RMS) | 12.5 kA (400A) / 20 kA (630A) |
| Dynamic Stable Current (Peak Value) | 31.5 kA (400A) / 50 kA (630A) |
| Short-Circuit Making Current | 31.5 kA (400A) / 50 kA (630A) |
| Rated Breaking Current | 400 A / 630 A |
| Rated Transfer Current | 1000 A |
Fuse Rated Parameters
| Model | Rated Voltage | Rated Current (A) | Rated Current of Fuse (A) |
|---|---|---|---|
| SDLA*J | 12 kV | 40 | 6.3, 10, 16, 20, 25, 31.5, 40 |
| SFLA*J | 12 kV | 100 | 50, 63, 71, 80, 100 |
| SKLA*J | 12 kV | 125 | 125 |
Ambient Conditions
Altitude
Less than 1000 m
Ambient Temperature
Maximum +40℃, Minimum -25℃
Relative Humidity
Daily average not more than 95%, monthly average not more than 90%
Air Quality
No significant pollution by corrosive or flammable gases and water vapor
Vibration
No frequent violent vibrations
Request Technical Confirmation For GPFN7 LBS
Please indicate load switch model, name and quantity. If equipped with a fuse, please indicate the fuse model and its rated current.