CN205657002U - CT transformation ratio adjustable vacuum switch - Google Patents
CT transformation ratio adjustable vacuum switch Download PDFInfo
- Publication number
- CN205657002U CN205657002U CN201620329894.3U CN201620329894U CN205657002U CN 205657002 U CN205657002 U CN 205657002U CN 201620329894 U CN201620329894 U CN 201620329894U CN 205657002 U CN205657002 U CN 205657002U
- Authority
- CN
- China
- Prior art keywords
- vacuum switch
- switch
- load voltage
- voltage ratio
- cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model provides a CT transformation ratio adjustable vacuum switch, includes the switch body, is provided with installing support, mechanism's cover and wire inlet and outlet bushing on the switch body, is equipped with vacuum switch operating device in mechanism's cover, wire inlet and outlet bushing is other still to be provided with the secondary terminal board, is provided with change over switch on the secondary terminal, and current transformer's line terminal and change over switch are connected. Can realize adjusting current transformer's transformation ratio through direct rotatory change over switch, need not reduce the operation degree of difficulty with the help of other drawings or the instrument of relocating, have easy operation and the advantage that is difficult for makeing mistakes, reduce risks, bring the convenience of operation and maintenance for the staff, guarantee safety, owing to need not to relocate again, avoided connecting wire to take place the not firm phenomenon of wiring, the maximum risk that takes place electric accident that has reduced with binding post when being connected simultaneously. The utility model relates to a CT transformation ratio adjustable vacuum switch has easy operation, is difficult for to make mistakes and advantage such as security height.
Description
Technical field
This utility model relates to vacuum switch field, particularly relates to a kind of adjustable vacuum switch of CT no-load voltage ratio.
Background technology
In high voltage electrical apparatus technical field; vacuum switch is mainly used in load current, overcurrent and the short circuit current cut-offfing, closing in power system; protect be applicable to transformer substation system and control; it is simultaneously applicable to the complicated place with frequent operation of overhead transmission line, is the requisite equipment of intelligent grid.ZW20-12 type vacuum circuit breaker and FZW28-12 vacuum load switch are rated voltage 12kV, three-phase alternating current 50Hz outdoor high voltage switchgear, and switch uses SF6 insulation, vacuum extinction.
Above-mentioned outdoor vacuum switch is generally fitted with A, C biphase current transformer and zero sequence current mutual inductor.In order to meet the burden requirement of different field of employment, CT no-load voltage ratio typically uses 200-400-600/5 polytropic ratio transformer, to select corresponding electric current no-load voltage ratio according to different intensity of loads.The existing vacuum switch mode of connection is that the secondary line of tri-kinds of no-load voltage ratios of CT is all guided to terminal block, selects corresponding no-load voltage ratio by short circuit, adjustment terminal.When carrying out no-load voltage ratio operation, generally individually need to open switch side binding post cover, according to drawing rewiring, use instrument of relocating to disconnect connecting the wire binding post with former no-load voltage ratio, then it is connected to connecting wire on the binding post of required no-load voltage ratio, after wiring, covers binding post cover again.Owing to outdoor vacuum switch is installed on the electric pole that ground is higher, regulation no-load voltage ratio needs professional aloft to operate regulation wiring.Operator's technical merit is required higher, operation and inconvenience, and easily make mistakes, and be operation of ascending a height, dangerous big.
In sum, it is provided that a kind of simple to operate, the most error-prone and vacuum switch that safety is high, it is industry technical problem urgently to be resolved hurrily.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, this utility model provides a kind of simple to operate, the most error-prone and that safety the is high adjustable vacuum switch of CT no-load voltage ratio.
This utility model solves the technical scheme that its technical problem used:
A kind of adjustable vacuum switch of CT no-load voltage ratio, including Switch main body, the top of described Switch main body is fixedly installed mounting bracket, mechanism's cover it is provided with before described Switch main body, described mechanism covers built with vacuum switch operating mechanism, the two ends of described Switch main body are provided with inlet-outlet sleeve, described inlet-outlet sleeve side is provided with current transformer, it is additionally provided with secondary terminal box by described inlet-outlet sleeve, being provided with permutator bottom described secondary terminal box, the terminals of connecting wire of current transformer is connected with described permutator.
Further, A phase and C phase entrance bushing side are respectively provided with A phase current mutual inductor and C phase current mutual inductor, and B phase lead collar tube side is equipped with ZCT, and described Switch main body is built with three-phase vacuum extinction chamber component.
Further, described mechanism cover lower end is provided with aviation plug, is provided with line perforate bottom described secondary terminal box, and the terminals of connecting wire of current transformer is connected to permutator by aviation plug and cable-through hole.
Further, described secondary terminal box top is additionally provided with a waterproof cover, and described waterproof cover is welded on mechanism's cover.
Further, described permutator is provided with four gears, the most corresponding neutral and different CT no-load voltage ratios.
Further, it is provided with, between two gears of described permutator arbitrary neighborhood, the centre position ensureing that circuit is always path.
Further, described mechanism cover is additionally provided with the energy storage pointer mapping vacuum switch energy storage state.
Further, the conjunction described mechanism cover being additionally provided with mapping vacuum switch conjunction point state divides pointer.
The beneficial effects of the utility model have: the adjustable vacuum switch of this utility model one CT no-load voltage ratio, can realize the no-load voltage ratio of current transformer is adjusted by direct rotary sampling switch, completely dispense with by drawing or other instruments of relocating, reduce the technology requirement to field personnel, greatly reduce operation easier, there is simple to operate and the most error-prone advantage, reduce the risk in work, the convenience of operation and maintenance is brought, it is ensured that the safety of staff to staff；Due to without relocating again, it is to avoid connect wire and wiring phenomenon loosely occurs when being connected with binding post, farthest reduce the risk of generation electrical hazard.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings and specific embodiment the utility model is described in further detail, wherein:
Fig. 1 is the front view of this utility model vacuum switch；
Fig. 2 is the schematic diagram of this utility model permutator contact；
Fig. 3 is the schematic diagram of this utility model permutator.
Detailed description of the invention
See the front view that Fig. 1, Fig. 1 are this utility model vacuum switches.The adjustable vacuum switch of this utility model one CT no-load voltage ratio, including Switch main body 1, the top of described Switch main body 1 is fixedly installed mounting bracket 2, mechanism's cover 3 it is provided with before described Switch main body 1, described mechanism cover 3 is built with vacuum switch operating mechanism, the two ends of described Switch main body 1 are provided with inlet-outlet sleeve 4, described inlet-outlet sleeve 4 side is provided with current transformer, described inlet-outlet sleeve 4 is other is additionally provided with secondary terminal box 5, being provided with permutator 6 bottom described secondary terminal box 5, the terminals of connecting wire of current transformer is connected with described permutator 6；Further, described mechanism cover 3 being additionally provided with the energy storage pointer mapping vacuum switch energy storage state, the conjunction that described mechanism cover 3 is additionally provided with mapping vacuum switch conjunction point state divides pointer；Further, mechanism covers 3 lower ends and is provided with aviation plug 7, is provided with line perforate bottom described secondary terminal box 5, and the terminals of connecting wire of current transformer is connected to permutator 6 by aviation plug 7 and cable-through hole.Wherein, mounting bracket 2 is arranged on the top of Switch main body 1, is used for fixing Switch main body 1；Vacuum switch operating mechanism is for realizing the breaking-closing operating of vacuum switch；Inlet-outlet sleeve 4 includes entrance bushing and outlet casing tube, three-phase high-voltage line is from entrance bushing access switch body 1, from outlet casing tube out, it is being respectively provided with A phase current mutual inductor and C phase current mutual inductor near A phase and C phase entrance bushing side, CT no-load voltage ratio is 200/5,400/5 and 600/5, or the combination of other polytropic ratios, near B phase lead collar tube side equipped with for monitoring and the ZCT of detection, described Switch main body 1 is built with for rapid blow-out the three-phase vacuum extinction chamber component that suppresses electric current；Also include a secondary terminal box 5, permutator 6 it is provided with bottom secondary terminal box 5, the terminals of connecting wire of current transformer is connected with described permutator 6, according to different intensity of loads, corresponding electric current no-load voltage ratio is selected by permutator 6, may select the no-load voltage ratio such as 200/5,400/5 and 600/5 in the present embodiment, it is possibility to have other polytropic ratios combine.Can realize the no-load voltage ratio of current transformer is adjusted by direct rotary sampling switch 6, operation easier need not be reduced by other drawings or instrument of relocating, there is simple to operate and the most error-prone advantage, reduce risks, bring the convenience of operation and maintenance to staff, it is ensured that safety；Simultaneously because without relocating again, avoid connection wire and wiring phenomenon loosely occurs when being connected with binding post, farthest reduce the risk that electrical hazard occurs, avoid connection wire and wiring phenomenon loosely occurs when being connected with binding post, farthest reduce the risk that electrical hazard occurs.
As preferred implementation of the present utility model, secondary terminal box 5 top is additionally provided with a waterproof cover 8, and described waterproof cover 8 is welded on mechanism's cover 3.Owing to vacuum switch is generally used for open air, electrical equipment is directly exposed in rugged environment throughout the year, easy ageing failure, arranges a waterproof cover 8 and can block most infringement, be conducive to service life and the reliability of raising equipment, it is ensured that permutator 6 can the most normally work.Waterproof cover 8 can be fixed on mechanism's cover 3 by the way of welding, it is also possible to according to practical situation, realizes by other means.
Further, as preferred implementation of the present utility model, described permutator 6 is provided with four gears, the most corresponding neutral and different CT no-load voltage ratios, can select 200/5,400/5 and 600/5 and neutral gear in the present embodiment, it is possibility to have other polytropic ratios combine.Neutral gear secondary ground connection, when not Current Transformer, is adjusted to neutral gear gear, it is possible to effectively prevent open circuit, it is ensured that equipment and personal safety.
See the schematic diagram that Fig. 2 and Fig. 3, Fig. 2 are this utility model permutator 6 contacts, when permutator 6 is adjusted to 200/5 grade, make contact 1,2 and 3,4；When permutator 6 is adjusted to 400/5 grade, make contact 5,6 and 7,8；When permutator 6 is adjusted to 600/5 grade, make contact 9,10 and 11,12；13,14 and 15,16 are then made contact during neutral gear.Accordingly, Fig. 3 is the schematic diagram of this utility model permutator 6, and when permutator 6 needs to be adjusted to 200/5 grade, make contact inductance S1 and inductance S4 two ends；When permutator 6 needs to be adjusted to 400/5 grade, make contact inductance S2 and inductance S5 two ends；When permutator 6 needs to be adjusted to 200/5 grade, make contact inductance S3 and inductance S6 two ends；Then ground connection during neutral gear.
Further, as preferred implementation of the present utility model, it is provided with, between described two gears of permutator 6 arbitrary neighborhood, the centre position ensureing that circuit is always path, make between two row contact 1-16 arranged side by side in the range of reasonably, keeping the distance of relative close, i.e. contact 1,2 is close to contact 5,6.Such being designed to ensures when converting gear by permutator 6, it is ensured that does not haves Current Transformer Secondary open circuit during transition, is further ensured that equipment and personal safety.
The above, better embodiment the most of the present utility model, but this utility model is not limited to above-described embodiment, as long as it reaches technique effect of the present utility model with any same or similar means, all should belong to protection domain of the present utility model.
Claims (8)
1. the adjustable vacuum switch of CT no-load voltage ratio, it is characterized in that: include Switch main body (1), the top of described Switch main body (1) is fixedly installed mounting bracket (2), described Switch main body (1) is front is provided with mechanism's cover (3), described mechanism cover (3) is built with vacuum switch operating mechanism, the two ends of described Switch main body (1) are provided with inlet-outlet sleeve (4), described inlet-outlet sleeve (4) side is provided with current transformer, described inlet-outlet sleeve (4) is other is additionally provided with secondary terminal box (5), described secondary terminal box (5) bottom is provided with permutator (6), the terminals of connecting wire of current transformer is connected with described permutator (6).
A kind of adjustable vacuum switch of CT no-load voltage ratio the most according to claim 1, it is characterized in that: A phase and C phase entrance bushing side are respectively provided with A phase current mutual inductor and C phase current mutual inductor, B phase lead collar tube side is equipped with ZCT, and described Switch main body (1) is built with three-phase vacuum extinction chamber component.
A kind of adjustable vacuum switch of CT no-load voltage ratio the most according to claim 1, it is characterized in that: described mechanism cover (3) lower end is provided with aviation plug (7), described secondary terminal box (5) bottom was provided with line perforate, and the terminals of connecting wire of current transformer is connected to permutator (6) by aviation plug (7) and cable-through hole.
A kind of adjustable vacuum switch of CT no-load voltage ratio the most according to claim 1, it is characterised in that: described secondary terminal box (5) top is additionally provided with a waterproof cover (8), and described waterproof cover (8) is welded in mechanism's cover (3).
A kind of adjustable vacuum switch of CT no-load voltage ratio the most according to claim 1, it is characterised in that: described permutator (6) is provided with four gears, the most corresponding neutral and different CT no-load voltage ratios.
A kind of adjustable vacuum switch of CT no-load voltage ratio the most according to claim 5, it is characterised in that: it is provided with, between two gears of described permutator (6) arbitrary neighborhood, the centre position ensureing that circuit is always path.
A kind of adjustable vacuum switch of CT no-load voltage ratio the most according to claim 1, it is characterised in that: it is additionally provided with the energy storage pointer mapping vacuum switch energy storage state in described mechanism cover (3).
A kind of adjustable vacuum switch of CT no-load voltage ratio the most according to claim 1, it is characterised in that: the conjunction being additionally provided with mapping vacuum switch conjunction point state in described mechanism cover (3) divides pointer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620329894.3U CN205657002U (en) | 2016-04-19 | 2016-04-19 | CT transformation ratio adjustable vacuum switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620329894.3U CN205657002U (en) | 2016-04-19 | 2016-04-19 | CT transformation ratio adjustable vacuum switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205657002U true CN205657002U (en) | 2016-10-19 |
Family
ID=57391508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620329894.3U Active CN205657002U (en) | 2016-04-19 | 2016-04-19 | CT transformation ratio adjustable vacuum switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205657002U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762008A (en) * | 2016-04-19 | 2016-07-13 | 珠海航天科创实业有限公司 | CT-ratio-adjustable vacuum switch |
-
2016
- 2016-04-19 CN CN201620329894.3U patent/CN205657002U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762008A (en) * | 2016-04-19 | 2016-07-13 | 珠海航天科创实业有限公司 | CT-ratio-adjustable vacuum switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203119316U (en) | Power electronic substation | |
| CN203134677U (en) | Insulating cylinder and main loop structure adopting same | |
| CN202534938U (en) | High-voltage distribution switch with built-in three-phase combined electronic current and voltage mutual inductor | |
| CN204614744U (en) | A kind of outdoor intelligent demarcation circuit breaker assembly | |
| CN205657002U (en) | CT transformation ratio adjustable vacuum switch | |
| CN201877348U (en) | Outdoor high-voltage alternating-current vacuum breaker | |
| CN203588916U (en) | Outdoor high-voltage intelligent vacuum circuit breaker | |
| CN203659733U (en) | Outdoor high-voltage demarcation vacuum circuit breaker | |
| CN202333588U (en) | Armored AC metal-enclosed switchgear | |
| CN105762008A (en) | CT-ratio-adjustable vacuum switch | |
| US9077161B2 (en) | Integral current transforming electric circuit interrupter | |
| CN209981864U (en) | Prefabricated on-column distribution transformer device | |
| CN202616131U (en) | Outdoor vacuum circuit breaker with adjustable no-load voltage ratio of current transformer | |
| CN203166382U (en) | 10kV double-circuit breaker high-voltage switch cabinet | |
| CN208127843U (en) | A kind of electric power tower high pressure takes electricity gas-insulated transformer substation system | |
| CN207303816U (en) | A kind of inflatable ring main unit with metering cabinet | |
| CN201690118U (en) | Open outdoor high-voltage monitoring and protecting combined electric appliance | |
| CN201928001U (en) | Open circuit protector of current transformer | |
| CN204464778U (en) | Be applicable to the high-voltage electric device of ring network power supply system | |
| CN2882077Y (en) | High-voltage series capacitor compensator | |
| CN204012232U (en) | Capacitor compensation and filtering switching device | |
| CN205104355U (en) | Current inducer | |
| CN111463695A (en) | Prefabricated on-column distribution transformer area | |
| CN203135434U (en) | Neutral point virtual grounding device | |
| CN203747286U (en) | Permanent-magnet high-voltage switch measurement integrated device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 519000 room 303-1, 3 / F, aviation and new town planning exhibition hall, Jin Wan District, Zhuhai, Guangdong Patentee after: Spaceflight Yinshan Electric Co., Ltd. Address before: 519000 room 303-1, 3 / F, aviation and new town planning exhibition hall, Jin Wan District, Zhuhai, Guangdong Patentee before: ZHUHAI AEROSPACE SCIENCE & TECHNOLOGY INNOVATION INDUSTRIAL CO., LTD. |