CN204794328U - Three -phase electricity dual supply automatic switching control equipment - Google Patents
Three -phase electricity dual supply automatic switching control equipment Download PDFInfo
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- CN204794328U CN204794328U CN201520266352.1U CN201520266352U CN204794328U CN 204794328 U CN204794328 U CN 204794328U CN 201520266352 U CN201520266352 U CN 201520266352U CN 204794328 U CN204794328 U CN 204794328U
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- 230000005611 electricity Effects 0.000 title claims abstract description 26
- 230000009977 dual effect Effects 0.000 title claims abstract description 18
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a three -phase electricity dual supply automatic switching control equipment, the inductance coils 3KM2 one end of third relay links to each other with zero line N, and the other end links to each other with phase line U1, the inductance coils 4KM2 one end of fourth relay links to each other with zero line N, and the other end links to each other with phase line V1, the inductance coils 5KM2 one end of the 5th relay links to each other with zero line N, and the other end links to each other with phase line W1, the normally open contact 5KM1 one end of the normally open contact 3KM1 of the inductance coils 1KM2 of the first contactor of series connection, the normally closed contact 2KM3 of second contactor, third relay, the normally open contact 4KM1 of fourth relay and the 5th relay links to each other with zero line N, and the other end links to each other with phase line W1, the normally open contact 1KM1 of first contactor is located phase line U1, V1 and W1. 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.
Description
Technical field
The utility model relates to Thermal Control System, particularly relates to a kind of three-phase electricity dual power supply automatic switching device, for the main power source of three-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 three-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 three-phase electricity dual power supply automatic switching device, comprises main power source, stand-by power supply, the first contactor, the second contactor, the 3rd relay, the 4th relay and the 5th relay;
Inductance coil 3KM2 one end of 3rd relay is connected with zero line N, and the other end is connected with phase line U1;
Inductance coil 4KM2 one end of 4th relay is connected with zero line N, and the other end is connected with phase line V1;
Inductance coil 5KM2 one end of 5th relay is connected with zero line N, and the other end is connected with phase line W1;
The inductance coil 1KM2 of the first contactor of series connection, the normally-closed contact 2KM3 of the second contactor, the normally opened contact 3KM1 of the 3rd relay, the normally opened contact 4KM1 of the 4th relay are connected with zero line N with normally opened contact 5KM1 one end of the 5th relay, and the other end is connected with phase line W1, V1 or U1;
The normally opened contact 1KM1 of the first contactor is positioned on phase line U1, V1 and W1;
U2, V2 of stand-by power supply are connected with W1 with U1, V1 of main power source successively with W2, and the normally opened contact 2KM1 of the second contactor is positioned on phase line U2, V2 and W2;
The normally-closed contact 3KM3 of the 3rd relay, the normally-closed contact 4KM3 of the 4th relay and the normally-closed contact 5KM3 of the 5th relay in parallel connect with the normally-closed contact 1KM3 of the first contactor, the normally-closed contact 1KM3 of the first contactor connects with the inductance coil 2KM2 of the second contactor, the normally-closed contact 3KM3 of the 3rd relay is connected with phase line U2, V2 or W2, and the inductance coil 2KM2 of the second contactor is connected with zero line N.
In aforesaid three-phase electricity dual power supply automatic switching device, also comprise the first circuit breaker 1KT, the normally opened contact 5KM1 of the inductance coil 1KM2 of the first circuit breaker 1KT and the first contactor, normally-closed contact 2KM3, the normally opened contact 3KM1 of the 3rd relay of the second contactor, the normally opened contact 4KM1 of the 4th relay and the 5th relay connects.
In aforesaid three-phase electricity dual power supply automatic switching device, also comprise the second circuit breaker 2KT, the second circuit breaker 2KT and the normally-closed contact 1KM3 of the first contactor, the inductance coil 2KM2 of the second contactor and the normally-closed contact 3KM3 of the 3rd relay, the normally-closed contact 4KM3 of the 4th relay of parallel connection and the normally-closed contact 5KM3 of the 5th relay connect.
In aforesaid three-phase electricity dual power supply automatic switching device, also comprise the 3rd circuit breaker 1QF, the 3rd circuit breaker 1QF is positioned on phase line U1, V1 and W1.
In aforesaid three-phase electricity dual power supply automatic switching device, also comprise the 4th circuit breaker 2QF, the 4th circuit breaker 2QF is positioned on phase line U2, V2 and W2.
Compared with prior art, the 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.
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 three-phase electricity dual power supply automatic switching device, comprises main power source, stand-by power supply, the first contactor, the second contactor, the 3rd relay, the 4th relay and the 5th relay;
Inductance coil 3KM2 one end of 3rd relay is connected with zero line N, and the other end is connected with phase line U1;
Inductance coil 4KM2 one end of 4th relay is connected with zero line N, and the other end is connected with phase line V1;
Inductance coil 5KM2 one end of 5th relay is connected with zero line N, and the other end is connected with phase line W1;
The inductance coil 1KM2 of the first contactor of series connection, the normally-closed contact 2KM3 of the second contactor, the normally opened contact 3KM1 of the 3rd relay, the normally opened contact 4KM1 of the 4th relay are connected with zero line N with normally opened contact 5KM1 one end of the 5th relay, and the other end is connected with phase line W1, V1 or U1;
The normally opened contact 1KM1 of the first contactor is positioned on phase line U1, V1 and W1;
U2, V2 of stand-by power supply are connected with W1 with U1, V1 of main power source successively with W2, and the normally opened contact 2KM1 of the second contactor is positioned on phase line U2, V2 and W2;
The normally-closed contact 3KM3 of the 3rd relay, the normally-closed contact 4KM3 of the 4th relay and the normally-closed contact 5KM3 of the 5th relay in parallel connect with the normally-closed contact 1KM3 of the first contactor, the normally-closed contact 1KM3 of the first contactor connects with the inductance coil 2KM2 of the second contactor, the normally-closed contact 3KM3 of the 3rd relay is connected with phase line U2, V2 or W2, and the inductance coil 2KM2 of the second contactor is connected with zero line N.
Also comprise the 3rd circuit breaker 1QF, the 3rd circuit breaker 1QF is positioned on phase line U1, V1 and W1.
Also comprise the 4th circuit breaker 2QF, the 4th circuit breaker 2QF is positioned on phase line U2, V2 and W2.
Embodiment 2: as shown in Figure 1, a kind of three-phase electricity dual power supply automatic switching device, comprises main power source, stand-by power supply, the first contactor, the second contactor, the 3rd relay, the 4th relay and the 5th relay;
Inductance coil 3KM2 one end of 3rd relay is connected with zero line N, and the other end is connected with phase line U1;
Inductance coil 4KM2 one end of 4th relay is connected with zero line N, and the other end is connected with phase line V1;
Inductance coil 5KM2 one end of 5th relay is connected with zero line N, and the other end is connected with phase line W1;
The inductance coil 1KM2 of the first contactor of series connection, the normally-closed contact 2KM3 of the second contactor, the normally opened contact 3KM1 of the 3rd relay, the normally opened contact 4KM1 of the 4th relay are connected with zero line N with normally opened contact 5KM1 one end of the 5th relay, and the other end is connected with phase line W1, V1 or U1;
The normally opened contact 1KM1 of the first contactor is positioned on phase line U1, V1 and W1;
U2, V2 of stand-by power supply are connected with W1 with U1, V1 of main power source successively with W2, and the normally opened contact 2KM1 of the second contactor is positioned on phase line U2, V2 and W2;
The normally-closed contact 3KM3 of the 3rd relay, the normally-closed contact 4KM3 of the 4th relay and the normally-closed contact 5KM3 of the 5th relay in parallel connect with the normally-closed contact 1KM3 of the first contactor, the normally-closed contact 1KM3 of the first contactor connects with the inductance coil 2KM2 of the second contactor, the normally-closed contact 3KM3 of the 3rd relay is connected with phase line U2, V2 or W2, and the inductance coil 2KM2 of the second contactor is connected with zero line N.
Also comprise the first circuit breaker 1KT, the normally opened contact 5KM1 of the inductance coil 1KM2 of the first circuit breaker 1KT and the first contactor, normally-closed contact 2KM3, the normally opened contact 3KM1 of the 3rd relay of the second contactor, the normally opened contact 4KM1 of the 4th relay and the 5th relay connects.
Also comprise the 3rd circuit breaker 1QF, the 3rd circuit breaker 1QF is positioned on phase line U1, V1 and W1.
Also comprise the 4th circuit breaker 2QF, the 4th circuit breaker 2QF is positioned on phase line U2, V2 and W2.
Embodiment 3: as shown in Figure 1, a kind of three-phase electricity dual power supply automatic switching device, comprises main power source, stand-by power supply, the first contactor, the second contactor, the 3rd relay, the 4th relay and the 5th relay;
Inductance coil 3KM2 one end of 3rd relay is connected with zero line N, and the other end is connected with phase line U1;
Inductance coil 4KM2 one end of 4th relay is connected with zero line N, and the other end is connected with phase line V1;
Inductance coil 5KM2 one end of 5th relay is connected with zero line N, and the other end is connected with phase line W1;
The inductance coil 1KM2 of the first contactor of series connection, the normally-closed contact 2KM3 of the second contactor, the normally opened contact 3KM1 of the 3rd relay, the normally opened contact 4KM1 of the 4th relay are connected with zero line N with normally opened contact 5KM1 one end of the 5th relay, and the other end is connected with phase line W1, V1 or U1;
The normally opened contact 1KM1 of the first contactor is positioned on phase line U1, V1 and W1;
U2, V2 of stand-by power supply are connected with W1 with U1, V1 of main power source successively with W2, and the normally opened contact 2KM1 of the second contactor is positioned on phase line U2, V2 and W2;
The normally-closed contact 3KM3 of the 3rd relay, the normally-closed contact 4KM3 of the 4th relay and the normally-closed contact 5KM3 of the 5th relay in parallel connect with the normally-closed contact 1KM3 of the first contactor, the normally-closed contact 1KM3 of the first contactor connects with the inductance coil 2KM2 of the second contactor, the normally-closed contact 3KM3 of the 3rd relay is connected with phase line U2, V2 or W2, and the inductance coil 2KM2 of the second contactor is connected with zero line N.
Also comprise the first circuit breaker 1KT, the normally opened contact 5KM1 of the inductance coil 1KM2 of the first circuit breaker 1KT and the first contactor, normally-closed contact 2KM3, the normally opened contact 3KM1 of the 3rd relay of the second contactor, the normally opened contact 4KM1 of the 4th relay and the 5th relay connects.
Also comprise the second circuit breaker 2KT, the second circuit breaker 2KT and the normally-closed contact 1KM3 of the first contactor, the inductance coil 2KM2 of the second contactor and the normally-closed contact 3KM3 of the 3rd relay, the normally-closed contact 4KM3 of the 4th relay of parallel connection and the normally-closed contact 5KM3 of the 5th relay connect.
Also comprise the 3rd circuit breaker 1QF, the 3rd circuit breaker 1QF is positioned on phase line U1, V1 and W1.
Also comprise the 4th circuit breaker 2QF, the 4th circuit breaker 2QF is positioned on phase line U2, V2 and W2.
The operation principle of a kind of embodiment of the present utility model: during main power source normal condition: all circuit breakers are all in closure state, by main power source supplying power for outside, now relay 3KM2,4KM2,5KM2 is all charged, the normally opened contact of 3KM1,4KM1,5KM1 is all closed, and the normally-closed contact of 3KM3,4KM3,5KM3 disconnects.1KM2 obtains electric, and 1KM1 closes supplying power for outside; The 2KM1 of stand-by power supply is in blocking, and stand-by power supply is in stand-by state.
When mains power failure: when any phase of main power source, two-phase or three-phase break down dead electricity, then 1KM2 and dead electricity phase power detecting relay inductance coil (i.e. 3KM2,4KM2,5KM2 at least one of them dead electricity) dead electricity, 1KM1 disconnects, 1KM3 closes, dead electricity phase power detecting relay normally-closed contact (i.e. 3KM3,4KM3,5KM23 at least one of them close) is closed, then stand-by power supply contactor 2KM2 obtains electric, 2KM1 closes, supplying power for outside, realizes the automatic switchover of main power source to stand-by power supply.
When mains power failure is got rid of: relay 3KM2,4KM2,5KM2 all electric, trigger 3KM1,4KM1,5KM1 all closed, 3KM3,4KM3,5KM3 all disconnect, now, 2KM2 dead electricity for subsequent use, 2KM1 disconnects, and 2KM3 closes, then 1KM2 obtains electric, 1KM1 closes supplying power for outside, 1KM3 disconnects, and 2KM1 is in blocking, and stand-by power supply comes back to stand-by state.
Claims (5)
1. a three-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, the 3rd relay, the 4th relay and the 5th relay;
Inductance coil 3KM2 one end of 3rd relay is connected with zero line N, and the other end is connected with phase line U1;
Inductance coil 4KM2 one end of 4th relay is connected with zero line N, and the other end is connected with phase line V1;
Inductance coil 5KM2 one end of 5th relay is connected with zero line N, and the other end is connected with phase line W1;
The inductance coil 1KM2 of the first contactor of series connection, the normally-closed contact 2KM3 of the second contactor, the normally opened contact 3KM1 of the 3rd relay, the normally opened contact 4KM1 of the 4th relay are connected with zero line N with normally opened contact 5KM1 one end of the 5th relay, and the other end is connected with phase line W1, V1 or U1;
The normally opened contact 1KM1 of the first contactor is positioned on phase line U1, V1 and W1;
U2, V2 of stand-by power supply are connected with W1 with U1, V1 of main power source successively with W2, and the normally opened contact 2KM1 of the second contactor is positioned on phase line U2, V2 and W2;
The normally-closed contact 3KM3 of the 3rd relay, the normally-closed contact 4KM3 of the 4th relay and the normally-closed contact 5KM3 of the 5th relay in parallel connect with the normally-closed contact 1KM3 of the first contactor, the normally-closed contact 1KM3 of the first contactor connects with the inductance coil 2KM2 of the second contactor, the normally-closed contact 3KM3 of the 3rd relay is connected with phase line U2, V2 or W2, and the inductance coil 2KM2 of the second contactor is connected with zero line N.
2. three-phase electricity dual power supply automatic switching device according to claim 1, it is characterized in that, also comprise the first circuit breaker 1KT, the normally opened contact 5KM1 of the inductance coil 1KM2 of the first circuit breaker 1KT and the first contactor, normally-closed contact 2KM3, the normally opened contact 3KM1 of the 3rd relay of the second contactor, the normally opened contact 4KM1 of the 4th relay and the 5th relay connects.
3. three-phase electricity dual power supply automatic switching device according to claim 1, it is characterized in that, also comprise the second circuit breaker 2KT, the second circuit breaker 2KT and the normally-closed contact 1KM3 of the first contactor, the inductance coil 2KM2 of the second contactor and the normally-closed contact 3KM3 of the 3rd relay, the normally-closed contact 4KM3 of the 4th relay of parallel connection and the normally-closed contact 5KM3 of the 5th relay connect.
4. the three-phase electricity dual power supply automatic switching device according to any one of claims 1 to 3, is characterized in that, also comprises the 3rd circuit breaker 1QF, and the 3rd circuit breaker 1QF is positioned on phase line U1, V1 and W1.
5. three-phase electricity dual power supply automatic switching device according to claim 4, is characterized in that, also comprises the 4th circuit breaker 2QF, and the 4th circuit breaker 2QF is positioned on phase line U2, V2 and W2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520266352.1U CN204794328U (en) | 2015-04-28 | 2015-04-28 | Three -phase electricity dual supply automatic switching control equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520266352.1U CN204794328U (en) | 2015-04-28 | 2015-04-28 | Three -phase electricity dual supply automatic switching control equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204794328U true CN204794328U (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520266352.1U Expired - Fee Related CN204794328U (en) | 2015-04-28 | 2015-04-28 | Three -phase electricity dual supply automatic switching control equipment |
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| Country | Link |
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| CN (1) | CN204794328U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109167427A (en) * | 2018-08-28 | 2019-01-08 | 武汉船用机械有限责任公司 | A kind of power supply system |
| CN109586292A (en) * | 2019-01-31 | 2019-04-05 | 中车株洲电力机车有限公司 | A kind of library power supply protection system |
-
2015
- 2015-04-28 CN CN201520266352.1U patent/CN204794328U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109167427A (en) * | 2018-08-28 | 2019-01-08 | 武汉船用机械有限责任公司 | A kind of power supply system |
| CN109586292A (en) * | 2019-01-31 | 2019-04-05 | 中车株洲电力机车有限公司 | A kind of library power supply protection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 |