DS4C 225kV 230kV 330kV 345kV 252kV High voltage disconnect switch suppliers

Product introduction：

GW4C Switch Disconnector is a kind of outdoor HV electricity transmission equipment’s at three-phase AC frequency of 50Hz/60Hz. It is used for breaking or connecting HV lines under no loads so that these lines can be changed and connected and the way the electricity runs Is changed. In addition, It can be used lo exercise safe electrical insulation for such HV electric apparatuses as bus and breaker. The switch can open and close inductance/capacitance current and is able to open and close the bus to switch current.

This product has two insulators with horizontal center breaks. It Is openable In the middle and accessible to the grounding switch on one side or two sides. The disconnect switch adopts CS14G or CS11 manual operating mechanism or CJ2 motor-based operating mechanism to realize the tri-pole linkage，The earthing switch adopts CS14G manual operating mechanism to actual亿e tri-pole linkage

This product has been verified by the Chinese competent authority as having uniqueness in design and reaching intonational advanced level of similar products.

GW4C disconnect switch comprises three single poles and operating mechanism. Each single pole is made of a base, post insulator and conductive part revoting insulating posts are mounted at both sides of a long base. The conductive switch blade's contact arms are respectively fixed at the tops of the insulating posts.

When the Insulating post at one end of the actuator revolves to drive, and through the cross-over lever, brings the insulating post at the other end to rotate reversely by 90° to make the conductive switch blade circumgyrate. In this way, the isolating switch is opened and closed.

Main characteristic：

• The conductive arm made of rectangular Al-alloy pipes is characterized by high strength, light weight targe radiation area and strong stance against corruption

• The finger is made of pure copper and has a silver plating process. It has strong now capacity and long mechanical life. The stamping process ensures the reliability of contact and finger contact.

• The contact finger pressure is prohormonal to the primary insertion depth of the contact, the sensitivity is low, the contact insertion area is long, the on-site debugging is difficult, and the product is highly reliable against adverse interference such as harsh environment (winding of the flexible wire).

• The contact Is made of curved copper plate. In the opening and closing processes, there is a short trip of friction between the contact and the finger and the required operating force is small.

• The rotating parts of the Switch Disconnector are designed to be free of any maintenance. The rotating base is designed into a closure structure which denies t沺access of moisture, dust and harmful gases so that the low-temperature lubricating cream within the bearing will not run off or harden.

•  Provide one-key sequential control "double confirmation" function expansion

Main technical parameters：

Among these voltage levels 225kV/230kV/330kV/345kV Disconnect Switch , the rated short-circuit breaking current is 63kA, and customization is available.

 Order notice： 

Product model, rated voltage, rated current, Rated short-time withstand current and creepage distance must be specified at the goods-ordering time.

The disconnect switch offers several options of grounding (Left, right, both left and right).Unless otherwise specified, the goods supplied will be considered as providing the option of right grounding;

Note:

• The methods of judging left end right grounding: hold out both arms and keep the arms in the same direction as the disconnect switch is opened. The earthing switch will be considered as left grounding non the left hand side, and right grounding if on the right hand side;

• The operating mechanism, motor voltage, control voltage and the number of contacts for auxiliary switch;

• When the Switch Disconnector is used at the incoming and outgoing terminals of the substation in the double loop parallel overhead power transmission line, if the earthing switch requires the opening/dosing induction current then such requirement shall be specified. Besides, the parameters and the side at which the earthing switch Is set shall be defined. (Special notice: Not all earthing switches attached to the earthing switches and disconnect switches at the substation shall require the opening/closing Induction current)