The GW4A series outdoor high voltage AC disconnector is composed of three poles and the operating mechanism. Each pole consists of the base, post insulator, and the conductive portion. The rotary insulators are mounted on the rectangular base. The contact arm and the contact finger arm of the conductive knife switch are fixed on top of the insulators.
The operating mechanism drives the insulators on one end to rotate and the insulators on the other end are driven through the cross connecting rod to rotate in an inverse direction for 90 degrees. Then, the conductive knife switch rotates in the horizontal plane to realize the opening and closing of the disconnector. A horizontal insulation fracture will arise during opening.Technical Parameters
|Max. operating voltage||kV||12||17.5||27|
|Rated insulation level||1min power frequency withstand voltage (RMS)||To earth||kV||38||40||50|
|Rated lightning impulse withstand voltage (Peak)||To earth||kV||75||105||125|
|Rated short time withstand current||kA||6.3||12.5||20||31.5||31.5||40|
|Rated peak withstand current||kA||16||31.5||50||80||80||100|
|Rated short-circuit duration||s||4|
|Rated longitudinal mechanical load in the terminal||N||245|
|Operating mechanism||CS11-1, CS11, CS8-6D manual operating mechanism or CJ11A-G electric operating mechanism|
1. When ordering, you should specify the model, rated voltage, rated current, rated short time withstand current, creepage distance, and other key technical parameters of the high voltage AC disconnector.
2. You should specify the grounding mode of the earthing switch: ungrounded, left grounded, right grounded and double ground. If you do not specify whether it is left or right grounding, we will supply product according to right grounding.
Note: Discrimination method of left or right grounding is as follows. Stretch your arms forward, consistent with the opening direction of the disconnector. If the earthing switch is on your left hand side, it is left grounding. If on the right hand side, it's right grounding.
3. The type, name, power supply voltage, and the quantity of the auxiliary contacts should be specified.
4. Please state the type of the power supply and the voltage level of the electromagnetic lock installed on the operating mechanism.
Electrical Isolation Switch | High Tension Transmission Line Switch | Outdoor Disconnect Switch