Product introduction

GW5A Switch Disconnector Is a kind of outdoor HV electricity transmission equipment’s al three-phase AC frequency of 50Hz/60Hz. It Is used for breaking or connecting HV lines under no loads so that the power lines can be changed and connected and the way the electricity runs is changed. In addition it can be used to exercise safe eleclrica.1 insulation for such HV electric apparatuses as bus and break.

This product has two posts with horizontal open breaks. It Is open able In the middle and accessible to the grounding switch on one side or two sides. 90°drive's isolating switch and grounding switches adopt cs11 manual operating mechanism to execute the tri-pole linkage;180°drive's isolating switch adopts CS11 manual operating mechanism or CS14g manual to execute the tri-pole linkage; the grounding Switch adopts CS11 manual actuator to realize the tri-pole linkage.

GW5A Switch Disconnector comprises three single poles and actuator. Each single pole is made of a base, post insulator and conductive part. Two rotating post insulators are installed at a base with two insulators forming an angle of 50° and arranged in V shape. The contact finger arms and contact head arms of the conductive knife switch are separately fixed onto the end of the Insulating post.

The actuator drives one side of the insulating post to revolve, and drives the other side of the insulating post to rotate reversely by 90° through the angular wheel or link lever, so that the knife switch will be in circumgyration to realize the opening and closing of the Switch Disconnector. A horizontal insulating open break will appear at the closing moment.

Main characteristic

1、 The conductive arm made of rectangular Al-alloy pipes is characterized by high strength, light, weigh, large radiation area and strong resistance against corruption.

2、 GW5A adopts particular copper alloy to develop the self-contained contact. The contact point is tightened by the elastic force of the contact itself. The contact spring is eliminated to avoid possible drop of the contact in gripping force due to the spring's corrosion and shunting, possible heating and annealing, possible increment in contact resistance, and possible vicious cycle of the growing heat or the contact The contact is made of curved copper plate, forming a large connection area with the conductive arm. In the opening and dosing processes, there is a short trip of friction between the contact and the finger and the required operating force is small. The conductive part has been acknowledged by the Chinese competent authority as a new and practical patent.(Patent No.: 2103 2 20022.6)

3、 The rotating parts of the Switch Disconnector are designed to be free of maintenance. The rotating base is designed into a closure structure which denies the access of moisture, dust and harmful gases so that the low-temperature lubricating cream within the bearing will not run off or harden. Within the bearing base are thrust ball bearing and radial ball bearing, both of which will share the gravity and horizontal component of the Switch Disconnector so that the operating torque will not increase after the long-term operation of the disconnect switch

4、 The mechanical interlock between the primary switch and earthing switch is directly installed onto the principal axis of the primary switch and the revolution axis of the earthing switch. The interlock Is direct and reliable, eliminating the structurally complex gearbox. It also facilitates easy adjustment In the field erection and avoids the corrosion of the gear box.

5、 Provide one-key sequential control "double confim1ation" function expansion

Main technical parameters

Order notice 

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

The Switch Disconnector offers several options of grounding (no, left, right, both left and right). Unless otherwise specified, the goods suppled will be considered as providing the option of right grounding;

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

Methods of installation: horizontal installation, installation by the iodination of 25",side installation. Unless otherwise specified, the horizontal installation will be taken as default;

Specify the type of power and voltage degree for the electromagnetic lock of the actuator.