CN2124510U - Arc-free ac contactor (relay) - Google Patents
Arc-free ac contactor (relay) Download PDFInfo
- Publication number
- CN2124510U CN2124510U CN 92214446 CN92214446U CN2124510U CN 2124510 U CN2124510 U CN 2124510U CN 92214446 CN92214446 CN 92214446 CN 92214446 U CN92214446 U CN 92214446U CN 2124510 U CN2124510 U CN 2124510U
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- Prior art keywords
- relay
- contact
- contactor
- arc
- switch
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Abstract
The utility model discloses an arc-free AC contactor (relay) which is composed of a consumption-free AC electronic switch and an AC contactor (relay), wherein the AC contactor (relay) is used as a power output switch and is connected in parallel with the consumption-free AC electronic switch. The arc-free AC contactor (relay) can be applied in single-phase AC circuits and three-phase AC circuits. The AC contactor (relay) has no electric arc or spark during switching on and switching off processes, so the contact lifetime is enhanced by a plurality of order of magnitudes, and the rated capacity of the switch is increased in multiples. The circuit is quite simple, and the switch self does not consume power.
Description
The utility model relates to a kind of interchange contact (relay) device, is applicable to and makes AC power control element or pilot process control element in various ac power distribution systems, electronic apparatus and automation control system.
The alternating-current switch control element of Shi Yonging has following a few class in the prior art;
1. disconnecting link class switch: as knife switch, enclosed knife switch, universal seclector, on-load switch etc.;
2. A.C. contactor class: as magnetic starter, contactor, auxiliary relay, voltage relay etc.;
3. E-communication relay class: as transistor alternating-current switch, SCR AC switch, solid-state AC relay etc.
Advantages such as disconnecting link class switch has simple in structure, easy for installation, and instantaneous overload power is very strong, and is cheap.But this class switch can only manual operation, and the occasion that is not suitable for high-power and automatic control system frequent movement is used.
A.C. contactor class switch, simple because of its control, momentary overload capacity is strong, and price is lower, thereby is widely adopted in automation control system.(electric current is big more but because of the break-make of its contact in use will produce electric arc and spark, spark is big more, electric arc is serious more), this not only brings severe contamination to electrical network, also can bring very important hidden danger also for the functional reliability of automation control system because of the safety of the ablation serious threat electric equipment of contact.
E-communication contactor class has the response time weak point, no-spark in the switching process.But poor because of its momentary overload capacity, cost height, Control current complexity and switch itself are wanted consumed power (switching current is big more, and loss is big more, and it is serious more to generate heat, and makes all the more complexity of heat abstractor), use to be subjected to certain restriction.
At the problem of above-mentioned AC power control element or the existence of pilot process control element, the purpose of this utility model provides a kind of no arc and exchanges contact (relay) device.It is strong that this device has overload capacity, and control circuit is simple, and can eliminate electric arc or spark that interchange contact (relay) device contact produces in the switching process.
The purpose of this utility model is achieved in that it includes interchange contact (relay) device and the sub-switch of no power consumption.That electronic switch is selected for use is unidirectional, bidirectional triode thyristor or silicon controlled module, is parallel on interchange contact (relay) device of single-phase or three phase mains.
Below in conjunction with description of drawings, structure of the present utility model and operation principle further are illustrated.
Fig. 1 exchanges contact (relay) device electrical schematic diagram for no arc.
Fig. 2 is used for three-phase does not have arc interchange contact (relay) device electrical schematic diagram.
Referring to Fig. 1, two main electrode T of the sub-switch silicon controlled of no power consumption
1And T
2Contact the main contacts C of (relay) device respectively with interchange
1-1Parallel connection, two silicon controlled control ends contact the auxiliary contact C of (relay) device with interchange
1-2Link to each other.When exchanging the connection of contact (relay) device, the also corresponding connection of its auxiliary contact, the rapid conducting of controllable silicon at this moment exchanges electric arc or the spark that contact (relay) device brings because of contact chatter thereby eliminated in closing course; When exchanging the disjunction of contact (relay) device, the also corresponding disconnection of its auxiliary contact has two kinds of situations and take place this moment; (1) load current is zero, and SCR AC switch turn-offs immediately.(2) load current is non-vanishing, and SCR AC switch keeps conducting, has only when this electric current is kept electric current less than silicon controlled, and SCR AC switch just turn-offs.Exchange electric arc or the spark that contact (relay) device contact etc. produces thereby effectively eliminated in make and break process.
Shown in Figure 2, the no arc that is used for the A.B.C three phase mains for the utility model exchanges contact (relay) device electrical schematic diagram, it is in parallelly respectively on interchange contact (relay) device in three-phase circuit not have the consumption electronic AC switch and constitute its operation principle and roughly the same single-phase.Among the figure, RL is load.
The utility model compared with prior art has following characteristics:
1. utilize the power stage executive component after existing ac contactor (relay) device is done the alternating current connection, thereby kept the strong and simple advantage of control circuit of existing ac contactor (relay) device overload capacity.
2. utilized the controllable silicon response time short, if the characteristic that has electric current (be generally several～tens milliampere) just not turn-off after the conducting, thus eliminated electric arc or the spark that ac contactor (relay) device contact etc. produces in the switching process.
Claims (2)
1, a kind of no arc exchanges contact (relay) device, it is characterized in that connecting the sub-alternating-current switch of no power consumption on interchange contact (relay) device constitutes, and the sub-alternating-current switch of no power consumption is selected one-way SCR, bidirectional triode thyristor or silicon controlled module for use, two main electrode T of silicon controlled
1And T
2Contact the main contact C of (relay) device respectively with interchange
1-1Parallel connection, its control end contact the auxiliary contact C of (relay) device with interchange
1-2Be connected.
2, exchange contact (relay) device according to the said no arc of claim 1, it is characterized in that the sub-alternating-current switch of said no power consumption is parallel to respectively the A.C. contactor of A.B.C three phase mains, constituting three-phase does not have arc interchange contact (relay) device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92214446 CN2124510U (en) | 1992-04-16 | 1992-04-16 | Arc-free ac contactor (relay) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92214446 CN2124510U (en) | 1992-04-16 | 1992-04-16 | Arc-free ac contactor (relay) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2124510U true CN2124510U (en) | 1992-12-09 |
Family
ID=4959000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92214446 Granted CN2124510U (en) | 1992-04-16 | 1992-04-16 | Arc-free ac contactor (relay) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2124510U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377415A (en) * | 2011-10-21 | 2012-03-14 | 彭艳兵 | Electronic relay without electric spark |
| CN109704007A (en) * | 2018-12-14 | 2019-05-03 | 上海新朋联众汽车零部件有限公司 | Start-up and shut-down control method for automatic conveying belt system |
-
1992
- 1992-04-16 CN CN 92214446 patent/CN2124510U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377415A (en) * | 2011-10-21 | 2012-03-14 | 彭艳兵 | Electronic relay without electric spark |
| CN109704007A (en) * | 2018-12-14 | 2019-05-03 | 上海新朋联众汽车零部件有限公司 | Start-up and shut-down control method for automatic conveying belt system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |