CN205622215U - High -voltage switch control circuit based on relay - Google Patents
High -voltage switch control circuit based on relay Download PDFInfo
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- CN205622215U CN205622215U CN201620218949.3U CN201620218949U CN205622215U CN 205622215 U CN205622215 U CN 205622215U CN 201620218949 U CN201620218949 U CN 201620218949U CN 205622215 U CN205622215 U CN 205622215U
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- relay
- voltage switch
- switch gear
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a high -voltage switch control circuit based on relay, including a DC power supply, the normally open contact that DC power supply passes through the relay is connected with high -voltage switch, connecting in parallel and have a protected location in normally open contact's both ends, through relay control DC power supply's switch -on and disconnection, realizes drive high -voltage switch. At the off contact of relay or the in -process of switch -on, can produce electric arc because of state change, the protected location can absorb electric arc in the twinkling of an eye to be stored and consumes, and protect relay is not influenced by electric arc. An electric arc carries out arc extinction and arc extinguishing, has that simple structure, performance are good, an advantage such as good reliability and long service life that high -voltage switch control circuit based on relay, in the time of or breaking off in the switch -on of high -voltage switch driving circuit's relay, to producing.
Description
Technical field
This utility model relates to field of electrical equipment, and a kind of high-voltage switch gear based on relay controls loop.
Background technology
The control loop of high-voltage switch gear is developed so far, and aspects such as controlling the reliability in loop, safety and cost performance is proposed the highest requirement.At present, by the difference of operation principle, substantially the control loop for high-voltage switch gear can be divided into two kinds: one is to be driven by quasiconductor, be characterized in controlling loop complicated, cost is high, does not has visible on-off contact, and reliability is difficult to ensure；Another kind is to be driven by relay, is characterized in controlling loop simple, and low cost has visible on-off contact, and reliability can ensure that.Understanding by contrast, the type of drive reliability of relay is higher.
Although the type of drive reliability of relay is higher, but also bring certain defect: the opening and closing of relay can produce electric arc because of the change of state simultaneously, the risk bringing the relay controlling loop can be burnt by arc through, has a strong impact on the service life of relay.
In sum, it is provided that a kind of reliability is higher, service life is longer high-voltage switch gear controls loop, 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 high-voltage switch gear based on relay and controls loop, the advantage with simple in construction, and can carry out extinguishing arc and arc extinguishing, improves reliability and service life.
This utility model be the technical scheme is that by its technical problem of solution
A kind of high-voltage switch gear based on relay controls loop, it is characterised in that: including a DC source, described DC source is connected with high-voltage switch gear by the normally opened contact of relay, and the two ends of the normally opened contact of described relay are parallel with a protected location.
Further, described protected location includes extinguishing arc element and the blowout unit being serially connected.
Further, described DC source uses 220V voltage.
Further, described extinguishing arc element is an extinguishing arc electric capacity.
Further, described blowout unit is a quenching resistance.
Further, described extinguishing arc electric capacity is polarity free capacitor.
Further, the coil of described relay is connected with DC source.
The beneficial effects of the utility model are: this utility model provides a kind of high-voltage switch gear based on relay and controls loop; by setting, there is extinguishing arc and the protected location of arc extinguishing effect; can be when the relay that high-voltage switch gear controls loop connects or disconnects; the electric arc produced is carried out extinguishing arc and arc extinguishing, have simple in construction, performance good, highly reliable with length in service life etc. advantage.
Accompanying drawing explanation
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings:
Fig. 1 is module diagram of the present utility model.
Detailed description of the invention
A kind of high-voltage switch gear based on relay controls loop, it is characterised in that: including that a DC source 1, described DC source 1 are connected with high-voltage switch gear 3 by the normally opened contact of relay 2, the two ends of the normally opened contact of described relay 2 are parallel with a protected location 4.
Referring to the drawings 1; this utility model relay protection; including DC source 1, relay 2 and high-voltage switch gear 3; the coil of described relay 2 is connected with DC source 1; also include that the protected location 4 in parallel with the normally opened contact of relay 2, described protected location 4 include extinguishing arc element 41 and the blowout unit 42 being serially connected.DC source 1 is arranged in the control loop of high-voltage switch gear 3, controls loop and operates on distrbution network.Controlled the connecting and disconnecting of DC source 1 by relay 2, thus realize driving high-voltage switch gear 3.DC source 1 is after civil power power taking, for driving high-voltage switch gear 3 to provide power supply；Relay 2 can control the connecting and disconnecting of DC source 1 by controlling the action of contact；The effect of protected location 4 is when the relay 2 that high-voltage switch gear controls loop connects or disconnects, the electric arc produced because relay 2 contacts status changes to be carried out extinguishing arc and arc extinguishing.In the present embodiment, described DC source 1 uses DC220V voltage, but AC220V and other kinds of voltage are the most applicable.
As preferred implementation of the present utility model, protected location 4 includes extinguishing arc element 41 and the blowout unit 42 being serially connected, and extinguishing arc element 41 is an extinguishing arc electric capacity, and blowout unit 42 is a quenching resistance, and described extinguishing arc electric capacity is polarity free capacitor.The circuit of so simple in construction in parallel with relay 2 after being connected by extinguishing arc electric capacity and quenching resistance, can be improved high-voltage switch gear 3 control reliability and the service life in loop with protective relay 2 not by arc through.Protection device compared to traditional only arc-control device; this utility model is subdivided into extinguishing arc element 41 and blowout unit 42 protection device; the energy absorption of 41 electric arcs of extinguishing arc element and storing, blowout unit 42 then the energy expenditure of electric arc, can be further ensured that the trouble free service of relay 2.
Operation principle of the present utility model is described below in detail: when needs drive high-voltage switch gear 3; relay 2 controls contact and becomes to connect from disconnection action; access DC source 1; drive high-voltage switch gear 3; now, DC source 1 can produce electric arc on the contact of relay 2, but the extinguishing arc element 41 of electric arc moment protected location 4 absorbs and stores; energy expenditure through 42 electric arcs of blowout unit is fallen again, thus protective relay 2 is not burnt by electric arc；When need not drive high-voltage switch gear 3; relay 2 controls contact and becomes to disconnect from ON Action; recover the closed mode of high-voltage switch gear 3; now the contact of relay 2 can produce electric arc because state changes; similarly; the extinguishing arc element 41 of electric arc moment protected location 4 produced absorbs and stores, then falls through the energy expenditure of 42 electric arcs of blowout unit, thus protective relay 2 is not by electric arc influence.The use of relay 2 is that high-voltage switch gear controls the visible contact of increase, loop, improves safety.
It is above the preferably enforcement of utility model is illustrated, but this utility model is created and is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement on the premise of this utility model spirit, and modification or the replacement of these equivalents are all contained in the application claim limited range.
Claims (7)
1. a high-voltage switch gear based on relay controls loop; it is characterized in that: include a DC source (1); described DC source (1) is connected with high-voltage switch gear (3) by the normally opened contact of relay (2), and the two ends of the normally opened contact of described relay (2) are parallel with a protected location (4).
A kind of high-voltage switch gear based on relay the most according to claim 1 controls loop, it is characterised in that: described protected location (4) includes extinguishing arc element (41) and the blowout unit (42) being serially connected.
A kind of high-voltage switch gear based on relay the most according to claim 1 controls loop, it is characterised in that: described DC source (1) uses 220V voltage.
A kind of high-voltage switch gear based on relay the most according to claim 2 controls loop, it is characterised in that: described extinguishing arc element (41) is an extinguishing arc electric capacity.
A kind of high-voltage switch gear based on relay the most according to claim 2 controls loop, it is characterised in that: described blowout unit (42) is a quenching resistance.
A kind of high-voltage switch gear based on relay the most according to claim 4 controls loop, it is characterised in that: described extinguishing arc electric capacity is polarity free capacitor.
A kind of high-voltage switch gear based on relay the most according to claim 1 controls loop, it is characterised in that: the coil of described relay (2) is connected with DC source (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620218949.3U CN205622215U (en) | 2016-03-21 | 2016-03-21 | High -voltage switch control circuit based on relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620218949.3U CN205622215U (en) | 2016-03-21 | 2016-03-21 | High -voltage switch control circuit based on relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205622215U true CN205622215U (en) | 2016-10-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620218949.3U Active CN205622215U (en) | 2016-03-21 | 2016-03-21 | High -voltage switch control circuit based on relay |
Country Status (1)
| Country | Link |
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| CN (1) | CN205622215U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733036A (en) * | 2017-11-06 | 2018-02-23 | 山东谦恒电子科技有限公司 | Electric vehicle and charging/discharging thereof |
| CN108269714A (en) * | 2017-12-12 | 2018-07-10 | 上海海得控制系统股份有限公司 | Relay crowbar circuit and control device |
-
2016
- 2016-03-21 CN CN201620218949.3U patent/CN205622215U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733036A (en) * | 2017-11-06 | 2018-02-23 | 山东谦恒电子科技有限公司 | Electric vehicle and charging/discharging thereof |
| CN108269714A (en) * | 2017-12-12 | 2018-07-10 | 上海海得控制系统股份有限公司 | Relay crowbar circuit and control device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |