CN2488164Y

CN2488164Y - ZW 11-12/2000-31.5 outdoor ac high-voltage vacuum circuit breaker

Info

Publication number: CN2488164Y
Application number: CN 01213478
Authority: CN
Inventors: 黄新闻; 周月升; 邹苓; 黄增高
Original assignee: Pingjiang Electrical Appliance Branch Of Tianyi Science And Technology Co Ltd
Current assignee: Pingjiang Electrical Appliance Branch Of Tianyi Science And Technology Co Ltd
Priority date: 2001-02-26
Filing date: 2001-02-26
Publication date: 2002-04-24
Anticipated expiration: 2011-02-26

Abstract

The utility model relates to a ZW11-12/2000-31.5 outdoor ac high-voltage vacuum circuit breaker, which comprises a porcelain sleeve, a vacuum arc extinguish chamber, a lever, and a current transformer. The circuit breaker absolutely changes the structural form and the insulating form of the prior circuit breakers, enlarging the conducting sectional area, changing the motion mode of the vacuum arc extinguish chamber; the utility model has the advantages of a big volume of make-and-break, a high insulating level, a small operating power, a long service life, and a wide scope of application. The utility model can be used to cut off electricity, and to separate and gather the load current and the overload current for the 35-110kV converting station widely in the fields of electrical power, metallurgy, petro-chemical, mine, and railway; And the utility model is also capable of realizing far distance automatic control and the coincidence-blocking operation.

Description

ZW11-12/2000-31.5 outdoor AC high-voltage vacuum circuit-breaker

The present utility model is about 12KV high pressure field 2000A31.5KA outdoor vacuum circuit breaker.

The present utility model is the rated current 630A at present use, the 12kV outdoor vacuum circuit breaker of drop-out current 16kA, because its capacity is little, the requirement that still can not satisfy vast electric power system designs.

This ZW11-12/2000-31.5 outdoor high-voltage vacuum breaker is made up of vacuum interrupter, current transformer, porcelain bushing, operation insulator, guide plate, lever, housing etc.Its solution is: this circuit breaker has changed the version and the insulation mode of existing circuit breaker fully.Be that circuit breaker changes the secondary kind of drive into by the original one-level kind of drive, adopt three-phase " " word horizontal, every divide mutually upper and lower two-layer; Vacuum interrupter is the mode of moving both vertically; Conductive section is by 300mm ²Increase to 700mm ²And a metering level current transformer arranged in major loop; The insulation mode of circuit breaker also changes full air insulation into by compound inslation modes such as the filling transformer oil, fill SF6 gas of past, cover silicon rubber.

This 31.5kA outdoor vacuum circuit breaker has following tangible characteristics:

At first, the change of the kind of drive of this circuit breaker not only makes breaker mechanical, electric property stabilization energy be stablized, and improves traditional efficiency more than 40%, can reach mechanical endurance more than 10000 times; The second, the change of circuit breaker insulation mode has overcome original circuit breaker and had birth defects such as gas leak of the oil leakage, silicon rubber wear out, and reduces cost, and is safe and reliable; The 3rd, the increase of circuit breaker conductive section makes its rated current reach 2000A, drop-out current is 31.5kA, specified short circuit interruption capacity reaches more than the 600MVA, and the rated current that has overcome present like product is 630A, and drop-out current is 16kA, cut-off the deficiency that capacity is 300MVA; The 4th, in the circuit breaker major loop, be provided with the metering current mulual inductor function, can carry out electric energy measurement; The 5th, because this circuit breaker utilizes lever principle, then make the operating physical force of operation insulator reduce one times by original direct conduction type, guide plate leads at a distance, not only can guarantee the axiality of vacuum interrupter dynamic/static contact, and the insulation guiding can avoid taking place melting welding in interrupting process.

In sum, adopt the ZW11-12/2000-31.5 outdoor high-voltage vacuum breaker, have that the capacity of cut-offfing is big, insulation level is high, the little long service life of operating work, characteristics such as applied widely, can be widely used in fields such as electric power metallurgy, petrochemical industry, mine, railway, as the usefulness of 35-110kV transformer station deciliter load current, overload current and drop-out current, can realize far distance automatic controlling and reclosing operation simultaneously.

Below in conjunction with accompanying drawing the utility model circuit breaker is further specified:

Accompanying drawing one is a structure principle chart of the present utility model.

Accompanying drawing two is the vacuum interrupter schematic diagram.

Accompanying drawing one label: 1, go up junction block, 2, rubber mat plate, 3, vacuum interrupter, 4, current transformer, 5, guide plate, 6, conductive clip, 7, be flexible coupling, 8, lever, 9, porcelain bushing, 10, the operation insulator, 11, junction block down, 12, switch case.

In the accompanying drawing one, porcelain bushing 9 shells are connected on the switch case 12, and last junction block (1), following junction block (11) and porcelain bushing (9) three interconnect, and vacuum interrupter (3), current transformer (4) are fixed on porcelain bushing (9) the inside.The moving bar of vacuum interrupter (3) passes current transformer (4), links to each other with lever (8) through conductive clip (6), (7) water conservancy diversion that is flexible coupling, and operation insulator (10) moves up and down, and to drive the moving bar of vacuum interrupter moving up and down, to reach the effect of branch, combined floodgate.In motion process, guide plate (5) play the guiding role, to stablize the mechanical performance of vacuum interrupter.Rubber mat plate (2) plays rainproof waterproof action.

For making this circuit breaker can be applied to pollution severity and high area above sea level, in the accompanying drawing two, the moving bar of dynamic static joint 1 is lengthened to 180mm by original 51mm, passes the winding of current transformer as it.Diameter also is increased to Φ 125mm by original Φ 110mm, and can guarantee that creep distance is not less than 280.

Claims

1, ZW11-12/2000-31.5 outdoor high-voltage vacuum breaker, form by porcelain bushing, vacuum interrupter, lever, current transformer etc., its feature is at version that has changed this circuit breaker and insulation mode, increased conductive section, change the motion mode of vacuum interrupter, in major loop, be provided with metering level current transformer.

2, by the described ZW11-12/2000-31.5 outdoor high-voltage vacuum breaker of claim 1, its feature changes the secondary kind of drive at this circuit breaker into by the original one-level kind of drive, adopts three-phase " " word horizontal, every divide mutually upper and lower two-layer.

3, by the described ZW11-12/2000-31.5 outdoor high-voltage vacuum breaker of claim 1, its feature is the mode of moving both vertically at the vacuum interrupter of this circuit breaker, and the moving bar of dynamic static joint is lengthened to 180mm.

4, by the described ZW11-12/2000-31.5 outdoor high-voltage vacuum breaker of claim 1, its feature at the conductive section of this circuit breaker by 300mm ²Increase to 700mm ²

5, by the described ZW11-12/2000-31.5 outdoor high-voltage vacuum breaker of claim 1, its feature changes full air insulation mode at this circuit breaker into by the compound inslation mode.

6, by the described ZW11-12/200031.5 outdoor high-voltage vacuum breaker of claim 1, its feature is equipped with metering level current transformer in this circuit breaker major loop.