High-voltage outdoor vacuum switch with isolating switch
A technology of isolating switches and vacuum switches, which is applied in high-voltage air circuit breakers, electric switches, high-voltage/high-current switches, etc., can solve the problems of equipment environmental impact, poor sealing, and large volume, so as to reduce the cost and volume , the effect of reducing the volume
Active Publication Date: 2016-03-23
华电高科(北京)电气有限公司
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Problems solved by technology
[0013] b. The switchgear is bulky, which will inevitably lead to high costs;
[0014] c. If the seal is not good, it will also cause internal condensation and affect the insulation performance
The metal parts of the external isolating switch are also prone to corrosion, which affects the conductivity
[0015] ④ No matter which of the above solutions is adopted, as long as it has an isolating switch, no matter whether it is built-in or external, the volume is relatively large, and it cannot even be installed
If other equipment (such as power transformers, etc.) is added, it can only be installed externally, which will seriously affect the equipment and increase the accident rate.
Method used
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[0033] This High Voltage Outdoor Vacuum Switch with Disconnect Switch includes:
[0034] (1) Insulated incoming and outgoing wires 1-used to connect with external primary wires;
[0035] (2) Silicone rubber coating layer 2-anti-ultraviolet radiation to the insulator and protection;
[0036] (3) Current transformer 3-use for measuring the current of each phase;
[0037] (4) The left insulator 4-plays the role of support and insulation. Restricted by the processing technology, the entire insulator is divided into a left insulator (4) and a right insulator (7);
[0038] (5) Potential transformer 5 - used to measure the voltage of each phase and the zero-sequence voltage;
[0039] (6) Vacuum interrupter 6 - for breaking and connecting the primary circuit current;
[0040] (7) The right insulator 7-plays the role of support and insulation. ;
[0041] (8) Leading conductor 8 of the moving end - used for the leading line of the vacuum interrupter (6);
[0042] (9) The spring c...
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The invention relates to a high-voltage outdoor vacuum switch with an isolating switch applied in the electric field of high-voltage switches, in particular to a full-sealed and all-insulated outdoor high-voltage vacuum switch. The high-voltage outdoor vacuum switch comprises an insulated incoming and outgoing line (1), a left insulator (4) and a right insulator (7) which play supporting and insulating roles, the isolating switch which is mounted in a sealed isolating switch cavity (20) filled with liquid insulated silicone grease, an externally conical power supply transformer (19), an externally conical voltage transformer (5) and an externally conical lightning arrester (15). High-voltage electrified bodies are mostly poured in the solid insulators, and exposed parts are also immersed by the liquid insulator or insulated and sealed by conical surfaces, so that the volume is greatly reduced. The creep distance is increased by adopting a tooth type butt-joint manner between the left insulator (4) and the right insulator (7), and simultaneously a formed silicon rubber insulation spacer (26) is cushioned on a butt-joint surface to achieve the insulation sealing purpose.
Description
technical field [0001] The invention relates to a high-voltage outdoor vacuum switch (3.6kV-40.5kV) with an isolating switch, in particular to an outdoor fully-sealed and fully-insulated high-voltage vacuum switch. Background technique [0002] At present, the characteristics of known high-voltage outdoor vacuum switches with isolating switches are as follows: [0003] ①A gas medium is used to strengthen the insulation between the charged bodies and the ground, so as to reduce the volume. This brings up the following questions: [0004] a. The gas used is mostly SF 6 Gas, which has a great adverse impact on the environment and is a gas that is restricted by environmental protection conventions; [0005] b. As the ambient temperature changes, the gas pressure in the casing will also change, and if the seal is not tight, it will leak. After leakage, the gas concentration will decrease, which will affect the insulation performance; [0006] c. As long as it is not air, it ...
Claims
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IPC IPC(8): H01H33/66H01H33/52
CPCH01H33/52H01H33/66
Inventor 涂大石
Owner 华电高科(北京)电气有限公司