CN204794329U - Single -phase electric dual supply automatic switching control equipment - Google Patents
Single -phase electric dual supply automatic switching control equipment Download PDFInfo
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- CN204794329U CN204794329U CN201520266353.6U CN201520266353U CN204794329U CN 204794329 U CN204794329 U CN 204794329U CN 201520266353 U CN201520266353 U CN 201520266353U CN 204794329 U CN204794329 U CN 204794329U
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Abstract
The utility model discloses a single -phase electric dual supply automatic switching control equipment, including main power source, stand -by power supply, first contactor, second contactor and third relay, the inductance coils 1KM1 of the first contactor of series connection and the normally closed contact 2KM3 one end of second contactor link to each other with zero line N1, and the other end links to each other with live wire L1, the inductance coils 3KM1 of third relay and the inductance coils 1KM1 of the first contactor of series connection and the normally closed contact 2KM3 of second contactor connect in parallel mutually. The utility model discloses can work as the main power source when breaking down with the power by main power source automatic switch -over to stand -by power supply, after the main power source returns to normal, can be with the power by stand -by power supply automatic switch -over to main power source. Through automatic control replacement manual operation, the switching process need not human intervention, safe and reliable. And this single -phase electric dual supply automatic switching control equipment is built by relay and contactor, the low price is utilized and is overhauld and maintain.
Description
Technical field
The utility model relates to Thermal Control System, particularly relates to a kind of single-phase electricity dual power supply automatic switching device, for the main power source of single-phase electricity and stand-by power supply automatically switch.
Background technology
Thermal Control System mostly is two-way Power supply, and wherein a road power supply is main power source usually, and another road power supply is stand-by power supply, and two-way power supply is for subsequent use each other.After main power source is because of fault dead electricity, automatically switches to stand-by power supply and power.And after mains power failure is got rid of, need artificially to cut off stand-by power supply, power supply is made to be switched to main power source by stand-by power supply, this process need operating personnel are according to a definite sequence splitting or integrating relative breaker, operating personnel's ability to work be there are certain requirements, and there is the possibility of misoperation, electrical source exchange failure may be caused, cause device supplying power for outside to interrupt, even cause operating personnel's electric shock and other safety accidents.Therefore, provide a kind of and become problem demanding prompt solution when main power source stand-by power supply to the device of main power source that recovers normally can to automatically switch.
Utility model content
The purpose of this utility model is, a kind of single-phase electricity dual power supply automatic switching device is provided, when main power source breaks down, automatically power supply can be switched to stand-by power supply by main power source, and main power source recover normal time, automatically power supply can be switched to main power source by stand-by power supply.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of single-phase electricity dual power supply automatic switching device, comprises main power source, stand-by power supply, the first contactor, the second contactor and the 3rd relay;
The inductance coil 1KM1 of the first contactor of series connection is connected with zero line N1 with normally-closed contact 2KM3 one end of the second contactor, and the other end is connected with live wire L1;
The inductance coil 3KM1 of the 3rd relay is in parallel with the inductance coil 1KM1 of first contactor of connecting and the normally-closed contact 2KM3 of the second contactor;
The zero line N1 of main power source is connected with the zero line N1 of stand-by power supply, the live wire L1 of main power source is connected with the live wire L2 of stand-by power supply, the normally opened contact 1KM2 of the first contactor is positioned on zero line N1 and live wire L1, and the normally opened contact 2KM2 of the second contactor is positioned on zero line N2 and live wire L2;
The normally-closed contact 1KM3 of the first contactor, the inductance coil 2KM1 of the second contactor of series connection are connected with the zero line N2 of stand-by power supply with normally-closed contact 3KM3 one end of the 3rd relay, and the other end is connected with the live wire L2 of stand-by power supply.
In aforesaid single-phase electricity dual power supply automatic switching device, also comprise the first circuit breaker 1QF, the first circuit breaker 1QF is positioned on zero line N1 and live wire L1.
In aforesaid single-phase electricity dual power supply automatic switching device, also comprise the second circuit breaker 2QF, the second circuit breaker 2QF is positioned on zero line N2 and live wire L2.
In aforesaid single-phase electricity dual power supply automatic switching device, also comprise the 3rd circuit breaker 1KT, the 3rd circuit breaker 1KT is in series with the inductance coil 1KM1 of the first contactor in parallel and the inductance coil 3KM1 of the 3rd relay.
In aforesaid single-phase electricity dual power supply automatic switching device, also comprise the 4th circuit breaker 2KT, the normally-closed contact 1KM3 of the 4th circuit breaker 2KT and the first contactor and the normally-closed contact 3KM3 of the 3rd relay is in series.
Compared with prior art, this utility model can be worked as when main power source breaks down power supply is automatically switched to stand-by power supply by main power source, when main power source recover normal after, power supply can be automatically switched to main power source by stand-by power supply.Replace manual operations by the control of automation, handoff procedure is without the need to human intervention, safe and reliable.And this single-phase electricity dual power supply automatic switching device is built by relay and contactor, cheap, utilizes inspection and maintenance.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of the present utility model.
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Embodiment
Embodiment 1 of the present utility model: as shown in Figure 1, a kind of single-phase electricity dual power supply automatic switching device, comprises main power source, stand-by power supply, the first contactor, the second contactor and the 3rd relay; The inductance coil 1KM1 of the first contactor of series connection is connected with zero line N1 with normally-closed contact 2KM3 one end of the second contactor, and the other end is connected with live wire L1; The inductance coil 3KM1 of the 3rd relay is in parallel with the inductance coil 1KM1 of first contactor of connecting and the normally-closed contact 2KM3 of the second contactor; The zero line N1 of main power source is connected with the zero line N1 of stand-by power supply, the live wire L1 of main power source is connected with the live wire L2 of stand-by power supply, the normally opened contact 1KM2 of the first contactor is positioned on zero line N1 and live wire L1, and the normally opened contact 2KM2 of the second contactor is positioned on zero line N2 and live wire L2; The normally-closed contact 1KM3 of the first contactor, the inductance coil 2KM1 of the second contactor of series connection are connected with the zero line N2 of stand-by power supply with normally-closed contact 3KM3 one end of the 3rd relay, and the other end is connected with the live wire L2 of stand-by power supply.
Also comprise the first circuit breaker 1QF, the first circuit breaker 1QF is positioned on zero line N1 and live wire L1.
Embodiment 2: as shown in Figure 1, a kind of single-phase electricity dual power supply automatic switching device, comprises main power source, stand-by power supply, the first contactor, the second contactor and the 3rd relay; The inductance coil 1KM1 of the first contactor of series connection is connected with zero line N1 with normally-closed contact 2KM3 one end of the second contactor, and the other end is connected with live wire L1; The inductance coil 3KM1 of the 3rd relay is in parallel with the inductance coil 1KM1 of first contactor of connecting and the normally-closed contact 2KM3 of the second contactor; The zero line N1 of main power source is connected with the zero line N1 of stand-by power supply, the live wire L1 of main power source is connected with the live wire L2 of stand-by power supply, the normally opened contact 1KM2 of the first contactor is positioned on zero line N1 and live wire L1, and the normally opened contact 2KM2 of the second contactor is positioned on zero line N2 and live wire L2; The normally-closed contact 1KM3 of the first contactor, the inductance coil 2KM1 of the second contactor of series connection are connected with the zero line N2 of stand-by power supply with normally-closed contact 3KM3 one end of the 3rd relay, and the other end is connected with the live wire L2 of stand-by power supply.
Also comprise the second circuit breaker 2QF, the second circuit breaker 2QF is positioned on zero line N2 and live wire L2.
Embodiment 3: as shown in Figure 1, a kind of single-phase electricity dual power supply automatic switching device, comprises main power source, stand-by power supply, the first contactor, the second contactor and the 3rd relay; The inductance coil 1KM1 of the first contactor of series connection is connected with zero line N1 with normally-closed contact 2KM3 one end of the second contactor, and the other end is connected with live wire L1; The inductance coil 3KM1 of the 3rd relay is in parallel with the inductance coil 1KM1 of first contactor of connecting and the normally-closed contact 2KM3 of the second contactor; The zero line N1 of main power source is connected with the zero line N1 of stand-by power supply, the live wire L1 of main power source is connected with the live wire L2 of stand-by power supply, the normally opened contact 1KM2 of the first contactor is positioned on zero line N1 and live wire L1, and the normally opened contact 2KM2 of the second contactor is positioned on zero line N2 and live wire L2; The normally-closed contact 1KM3 of the first contactor, the inductance coil 2KM1 of the second contactor of series connection are connected with the zero line N2 of stand-by power supply with normally-closed contact 3KM3 one end of the 3rd relay, and the other end is connected with the live wire L2 of stand-by power supply.
Also comprise the 3rd circuit breaker 1KT, the 3rd circuit breaker 1KT is in series with the inductance coil 1KM1 of the first contactor in parallel and the inductance coil 3KM1 of the 3rd relay.
Embodiment 4: as shown in Figure 1, a kind of single-phase electricity dual power supply automatic switching device, comprises main power source, stand-by power supply, the first contactor, the second contactor and the 3rd relay; The inductance coil 1KM1 of the first contactor of series connection is connected with zero line N1 with normally-closed contact 2KM3 one end of the second contactor, and the other end is connected with live wire L1; The inductance coil 3KM1 of the 3rd relay is in parallel with the inductance coil 1KM1 of first contactor of connecting and the normally-closed contact 2KM3 of the second contactor; The zero line N1 of main power source is connected with the zero line N1 of stand-by power supply, the live wire L1 of main power source is connected with the live wire L2 of stand-by power supply, the normally opened contact 1KM2 of the first contactor is positioned on zero line N1 and live wire L1, and the normally opened contact 2KM2 of the second contactor is positioned on zero line N2 and live wire L2; The normally-closed contact 1KM3 of the first contactor, the inductance coil 2KM1 of the second contactor of series connection are connected with the zero line N2 of stand-by power supply with normally-closed contact 3KM3 one end of the 3rd relay, and the other end is connected with the live wire L2 of stand-by power supply.
Also comprise the 4th circuit breaker 2KT, the normally-closed contact 1KM3 of the 4th circuit breaker 2KT and the first contactor and the normally-closed contact 3KM3 of the 3rd relay is in series.
Embodiment 5: as shown in Figure 1, a kind of single-phase electricity dual power supply automatic switching device, comprises main power source, stand-by power supply, the first contactor, the second contactor and the 3rd relay; The inductance coil 1KM1 of the first contactor of series connection is connected with zero line N1 with normally-closed contact 2KM3 one end of the second contactor, and the other end is connected with live wire L1; The inductance coil 3KM1 of the 3rd relay is in parallel with the inductance coil 1KM1 of first contactor of connecting and the normally-closed contact 2KM3 of the second contactor; The zero line N1 of main power source is connected with the zero line N1 of stand-by power supply, the live wire L1 of main power source is connected with the live wire L2 of stand-by power supply, the normally opened contact 1KM2 of the first contactor is positioned on zero line N1 and live wire L1, and the normally opened contact 2KM2 of the second contactor is positioned on zero line N2 and live wire L2; The normally-closed contact 1KM3 of the first contactor, the inductance coil 2KM1 of the second contactor of series connection are connected with the zero line N2 of stand-by power supply with normally-closed contact 3KM3 one end of the 3rd relay, and the other end is connected with the live wire L2 of stand-by power supply.
Also comprise the first circuit breaker 1QF, the first circuit breaker 1QF is positioned on zero line N1 and live wire L1.
Also comprise the second circuit breaker 2QF, the second circuit breaker 2QF is positioned on zero line N2 and live wire L2.
Also comprise the 3rd circuit breaker 1KT, the 3rd circuit breaker 1KT is in series with the inductance coil 1KM1 of the first contactor in parallel and the inductance coil 3KM1 of the 3rd relay.
Also comprise the 4th circuit breaker 2KT, the normally-closed contact 1KM3 of the 4th circuit breaker 2KT and the first contactor and the normally-closed contact 3KM3 of the 3rd relay is in series.
The operation principle of a kind of embodiment of the present utility model:
During main power source normal condition: 2KM1 not electric, 2KM3 is in closure state, and the inductance coil 1KM1 of the first contactor obtains electric, 1KM2 close, main power source formed path, powered by main power source; Meanwhile, 1KM3 and 3KM3 disconnects, 2KM1 power-off, and 2KM2 disconnects, and stand-by power supply is in stand-by state.
When mains power failure: 1KM1 and 3KM1 power-off, 1KM2 disconnects, 1KM3 and 3KM3 closes, and 2KM1 obtains electric, and 2KM2 closes, and is powered by stand-by power supply.
When mains power failure is got rid of: 1KM1 and 3KM1 obtains electric, 1KM2 closes, 1KM3 and 3KM3 disconnects, 2KM1 power-off, and 2KM2 disconnects, and switches to main power source supplying power for outside by stand-by power supply.
Claims (5)
1. a single-phase electricity dual power supply automatic switching device, is characterized in that, comprises main power source, stand-by power supply, the first contactor, the second contactor and the 3rd relay;
The inductance coil 1KM1 of the first contactor of series connection is connected with zero line N1 with normally-closed contact 2KM3 one end of the second contactor, and the other end is connected with live wire L1;
The inductance coil 3KM1 of the 3rd relay is in parallel with the inductance coil 1KM1 of first contactor of connecting and the normally-closed contact 2KM3 of the second contactor;
The zero line N1 of main power source is connected with the zero line N1 of stand-by power supply, the live wire L1 of main power source is connected with the live wire L2 of stand-by power supply, the normally opened contact 1KM2 of the first contactor is positioned on zero line N1 and live wire L1, and the normally opened contact 2KM2 of the second contactor is positioned on zero line N2 and live wire L2;
The normally-closed contact 1KM3 of the first contactor, the inductance coil 2KM1 of the second contactor of series connection are connected with the zero line N2 of stand-by power supply with normally-closed contact 3KM3 one end of the 3rd relay, and the other end is connected with the live wire L2 of stand-by power supply.
2. single-phase electricity dual power supply automatic switching device according to claim 1, is characterized in that, also comprises the first circuit breaker 1QF, and the first circuit breaker 1QF is positioned on zero line N1 and live wire L1.
3. single-phase electricity dual power supply automatic switching device according to claim 1, is characterized in that, also comprises the second circuit breaker 2QF, and the second circuit breaker 2QF is positioned on zero line N2 and live wire L2.
4. single-phase electricity dual power supply automatic switching device according to claim 1, is characterized in that, also comprises the 3rd circuit breaker 1KT, and the 3rd circuit breaker 1KT is in series with the inductance coil 1KM1 of the first contactor in parallel and the inductance coil 3KM1 of the 3rd relay.
5. single-phase electricity dual power supply automatic switching device according to claim 1, is characterized in that, also comprises the 4th circuit breaker 2KT, and the normally-closed contact 1KM3 of the 4th circuit breaker 2KT and the first contactor and the normally-closed contact 3KM3 of the 3rd relay is in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520266353.6U CN204794329U (en) | 2015-04-28 | 2015-04-28 | Single -phase electric dual supply automatic switching control equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520266353.6U CN204794329U (en) | 2015-04-28 | 2015-04-28 | Single -phase electric dual supply automatic switching control equipment |
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| Publication Number | Publication Date |
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| CN204794329U true CN204794329U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520266353.6U Active CN204794329U (en) | 2015-04-28 | 2015-04-28 | Single -phase electric dual supply automatic switching control equipment |
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| CN (1) | CN204794329U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680557A (en) * | 2016-03-31 | 2016-06-15 | 大唐贵州发耳发电有限公司 | CEMS dual-power-supply switching control loop |
| CN106487091A (en) * | 2016-08-26 | 2017-03-08 | 国家电网公司客户服务中心南方分中心 | A kind of double loop power supply device of WMG |
-
2015
- 2015-04-28 CN CN201520266353.6U patent/CN204794329U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680557A (en) * | 2016-03-31 | 2016-06-15 | 大唐贵州发耳发电有限公司 | CEMS dual-power-supply switching control loop |
| CN105680557B (en) * | 2016-03-31 | 2019-02-15 | 大唐贵州发耳发电有限公司 | A kind of dual power supply switching control circuit of CEMS |
| CN106487091A (en) * | 2016-08-26 | 2017-03-08 | 国家电网公司客户服务中心南方分中心 | A kind of double loop power supply device of WMG |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100160 Beijing, Fengtai District Automobile Museum Road, No. 6, Ying Kun century A block, floor 11 Patentee after: CHINA HUADIAN ENGINEERING CO., LTD. Address before: 100160 Beijing, Fengtai District Automobile Museum Road, No. 6, Ying Kun century A block, floor 11 Patentee before: China Huadian Engineering (Group) Co., Ltd. |