CN204167997U - Double supply automatic switch-over circuit - Google Patents

Double supply automatic switch-over circuit Download PDF

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Publication number
CN204167997U
CN204167997U CN201420611201.0U CN201420611201U CN204167997U CN 204167997 U CN204167997 U CN 204167997U CN 201420611201 U CN201420611201 U CN 201420611201U CN 204167997 U CN204167997 U CN 204167997U
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relay
contactor
pin
civil power
primary coil
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CN201420611201.0U
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Chinese (zh)
Inventor
邵攀峰
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Guangdong East Power Co Ltd
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Guangdong East Power Co Ltd
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Abstract

The utility model relates to a kind of double supply automatic switch-over circuit, comprise the first A.C. contactor KM1, second A.C. contactor KM2, first relay J 1, second relay J 2, 3rd relay J 3, 4th relay J 4 and the 5th relay J 5, first indicator light LED1, second indicator light LED2, the normally open contact of A.C. contactor KM1 is connected to the A1 of civil power one, B1, C1, on N1 line, the normally open contact of A.C. contactor KM2 is connected to the A2 of civil power two, B2, C2, on N2 line, relay J 1, J2, J3 is connected on A1 respectively, on B1 or C1 and zero line N1, J4, J5 is connected on A1 or B1 or C1 and zero line N2 respectively, A.C. contactor KM1, the primary coil of KM2 be connected respectively with normally-closed contact and with each relay composition control circuit.This circuit can automatically switch and commonly use electricity and standby electricity, and cost is low, flexible and changeable, and reliability is high.

Description

Double supply automatic switch-over circuit
Technical field
The utility model relates to power supply technique field, particularly relates to a kind of double supply automatic switch-over circuit.
Background technology
The requirement of modern society to electrical network is more and more higher, and a lot of occasion all needs to use duplicate supply input switching device shifter (ATS), the conventional electricity in a road, and a road standby electricity, when after conventional electric power down, automatically switches to standby electricity and power; When after conventional electricity incoming call, automatically switch to again conventional electricity power supply, thus achieve the mutual switching of two-way civil power input.Double-power supply switching device will possess conventional electric preferential, pile defection, display lamp function toward contact simultaneously.And double-power supply switching device on the market, general cost is higher, and circuit is more complicated, and technological requirement is higher.
Utility model content
The utility model, for solving the problem, provides a kind of double supply automatic switch-over circuit, can judge civil power phase shortage and light warning, and can automatically switch civil power and standby electricity, and have the mechanical interlocked function of hardware, circuit is simple, cost is low, flexible and changeable, and technique is simple; Two-way civil power inputs reliable automatic mutual operation, and ensure Electrical Safety, reliability is high.
For achieving the above object, the technical scheme that the utility model adopts is:
A kind of double supply automatic switch-over circuit, it comprises the first A.C. contactor KM1, second A.C. contactor KM2, also comprise the first relay J 1, second relay J 2, 3rd relay J 3, 4th relay J 4 and the 5th relay J 5, first indicator light LED1, second indicator light LED2, the normally open contact of described first A.C. contactor KM1 is connected to the A1 of civil power one, B1, C1, on N1 line, the normally open contact of described second A.C. contactor KM2 is connected to the A2 of civil power two, B2, C2, on N2 line, the primary coil of described first relay J 1 connects A1 end respectively and holds with N1, the primary coil of described second relay J 2 connects B1 end respectively and holds with N1, the primary coil of described 3rd relay J 3 connects C1 end respectively and holds with N1, the primary coil of described 4th relay J 4 connects A2 end respectively and holds with N2, the primary coil of described 5th relay J 5 connects B2 end respectively and holds with N2, A1 end, the B1 of primary coil one end connection civil power one of described first A.C. contactor KM1 hold or C1 end, the other end connects 22 pin of the normally-closed contact of the second A.C. contactor KM2,21 pin of the normally-closed contact of the second A.C. contactor KM2 connect 4 pin of the first relay J 1,6 pin of the first relay J 1 connect 4 pin of the second relay J 2,6 pin of the second relay J 2 connect the N1 end of civil power one, and described first indicator light LED1 is connected in parallel on the primary coil two ends of described first A.C. contactor KM1, primary coil one end of described second A.C. contactor KM2 connects the A2 end of civil power two, B2 end or C2 end, the other end connects 22 pin of the normally-closed contact of the first A.C. contactor KM1, 21 pin of the normally-closed contact of the first A.C. contactor KM1 connect the first relay J 1 respectively, 1 pin of the second relay J 2 and the 3rd relay J 3, first relay J 1, 3 pin of the 5th relay J 5 are connected after 5 pin of the second relay J 2 and the 3rd relay J 3 are connected in parallel, 5 pin of the 5th relay J 5 connect 3 pin of the 4th relay J 4, 5 pin of the 4th relay J 4 connect the N2 end of civil power two, second indicator light LED2 is connected in parallel on the primary coil two ends of the second A.C. contactor KM2.
Wherein, the N2 line output terminal ground connection of described civil power two.
Preferably, the N2 line output terminal of described civil power two connects ground connection after a capacitor C.
Double supply automatic switch-over circuit described in the utility model, its beneficial effect is:
Utilize common circuit element relay and A.C. contactor to be connected in mains circuit and form commutation circuit, circuit is simple, and cost is low, flexible and changeable, and technique is simple; This circuit can judge civil power phase shortage and light warning, and can automatically switch civil power and standby electricity, and there is the mechanical interlocked function of hardware, two-way civil power inputs reliable automatic mutual operation, and ensure Electrical Safety, reliability is high.
Accompanying drawing explanation
Fig. 1 is the elementary diagram of the utility model double supply automatic switch-over circuit;
Fig. 2 is the control circuit figure of the utility model double supply automatic switch-over circuit.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model is described in further detail.
Embodiment:
With reference to Fig. 1, 2, double supply automatic switch-over circuit described in the utility model, it comprises the first A.C. contactor KM1, second A.C. contactor KM2, also comprise the first relay J 1, second relay J 2, 3rd relay J 3, 4th relay J 4 and the 5th relay J 5, first indicator light LED1, second indicator light LED2, the normally open contact of the first A.C. contactor KM1 is connected to the A1 of civil power one, B1, C1, on N1 line, the normally open contact of the second A.C. contactor KM2 is connected to the A2 of civil power two, B2, C2, on N2 line, the primary coil of the first relay J 1 connects A1 end respectively and holds with N1, the primary coil of the second relay J 2 connects B1 end respectively and holds with N1, the primary coil of the 3rd relay J 3 connects C1 end respectively and holds with N1, the primary coil of the 4th relay J 4 connects A2 end respectively and holds with N2, the primary coil of the 5th relay J 5 connects B2 end respectively and holds with N2, A1 end, the B1 of primary coil one end connection civil power one of the first A.C. contactor KM1 hold or C1 end, the other end connects 22 pin of the normally-closed contact of the second A.C. contactor KM2,21 pin of the normally-closed contact of the second A.C. contactor KM2 connect 4 pin of the first relay J 1,6 pin of the first relay J 1 connect 4 pin of the second relay J 2,6 pin of the second relay J 2 connect the N1 end of civil power one, and the first indicator light LED1 is connected in parallel on the primary coil two ends of described first A.C. contactor KM1, primary coil one end of second A.C. contactor KM2 connects the A2 end of civil power two, B2 end or C2 end, the other end connects 22 pin of the normally-closed contact of the first A.C. contactor KM1, 21 pin of the normally-closed contact of the first A.C. contactor KM1 connect the first relay J 1 respectively, 1 pin of the second relay J 2 and the 3rd relay J 3, first relay J 1, 3 pin of the 5th relay J 5 are connected after 5 pin of the second relay J 2 and the 3rd relay J 3 are connected in parallel, 5 pin of the 5th relay J 5 connect 3 pin of the 4th relay J 4, 5 pin of the 4th relay J 4 connect the N2 end of civil power two, second indicator light LED2 is connected in parallel on the primary coil two ends of the second A.C. contactor KM2.
A1, B1, C1, N1 line of civil power one, A2, B2, C2, N2 line correspondence of civil power two is communicated with, and is linked into respective output, and the N2 line output terminal of civil power two connects ground connection after a capacitor C.
Wherein, the first A.C. contactor KM1, the second A.C. contactor KM2 are the A.C. contactor of 220V; First relay J 1, second relay J 2, the 3rd relay J 3, the 4th relay J 4 and the 5th relay J 5 are the AC relay of 220V.Civil power one is conventional electricity, and civil power two is standby electricity.N1, N2 are zero line.
Operation principle: when civil power one and civil power two all normal power supply time, AC relay J1, J2, J3, J4, J5 all close, now the line bag (primary coil) of KM1 has 220V alternating current, the line bag of KM2 does not have 220V alternating current, so KM1 closes, KM2 disconnects, indicator light LED1 lights, civil power one exports supplying power for outside, achieves when two-way civil power is all normal, the preferential power supply of conventional electricity.Meanwhile, because KM1 closes, so normally closed interlock 22 pin of KM1 and 21 pin disconnect, and the primary coil zero line of KM2 is by normally closed interlock 22 pin of KM1, and 21 control, even if so time civil power 2 have 220V alternating current, KM2 does not also close; In like manner, when KM2 closes, normally closed interlock 22 pin and 21 pin of KM2 disconnect, and the primary coil zero line of KM1 is by normally closed interlock 22 pin of KM2,21 foot control systems, even if so time civil power 1 have 220V alternating current, KM1 also can not close.Just avoid civil power 1 and civil power 2 like this export electric power thus supplied simultaneously and occur, and achieve the mechanical interlocked function of hardware.
When civil power one power down, relay J 1, J2, J3 disconnect, J4, J5 are closed, now the line bag of KM1 is without 220V alternating current, and the line of KM2 is surrounded by 220V alternating current, so A.C. contactor KM2 closes, KM1 disconnects, indicator light LED2 lights, and civil power two exports supplying power for outside, achieves the automatic switchover of conventional electricity and standby electricity.
When civil power one, civil power two all normal power supply time, conventional electric civil power one supplying power for outside.During civil power one phase shortage, if phase shortage A1, relay J 1 disconnects, J2, J3, J4, J5 are closed, and so contactor KM1 line bag is without 220V alternating current, and KM2 line is surrounded by 220V alternating current, so contactor KM2 closes, LED2 lights, and civil power two exports supplying power for outside, achieves the automatic switchover of conventional electricity toward standby electricity.When civil power one phase shortage B1, C1, N1, the course of work is analogous to phase shortage A1, and switching device shifter is automatically cut into standby electricity and powers.
When civil power one power down, during civil power two normal power supply, if civil power two phase shortage, if civil power two lacks any phase or zero line, contactor KM2 can not close, thus serves the effect of protection.
The above is preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications are also considered as protection range of the present utility model.

Claims (3)

1. a double supply automatic switch-over circuit, it is characterized in that: comprise the first A.C. contactor KM1, second A.C. contactor KM2, also comprise the first relay J 1, second relay J 2, 3rd relay J 3, 4th relay J 4 and the 5th relay J 5, first indicator light LED1, second indicator light LED2, the normally open contact of described first A.C. contactor KM1 is connected to the A1 of civil power one, B1, C1, on N1 line, the normally open contact of described second A.C. contactor KM2 is connected to the A2 of civil power two, B2, C2, on N2 line, the primary coil of described first relay J 1 connects A1 end respectively and holds with N1, the primary coil of described second relay J 2 connects B1 end respectively and holds with N1, the primary coil of described 3rd relay J 3 connects C1 end respectively and holds with N1, the primary coil of described 4th relay J 4 connects A2 end respectively and holds with N2, the primary coil of described 5th relay J 5 connects B2 end respectively and holds with N2,
A1 end, the B1 of primary coil one end connection civil power one of described first A.C. contactor KM1 hold or C1 end, the other end connects 22 pin of the normally-closed contact of the second A.C. contactor KM2,21 pin of the normally-closed contact of the second A.C. contactor KM2 connect 4 pin of the first relay J 1,6 pin of the first relay J 1 connect 4 pin of the second relay J 2,6 pin of the second relay J 2 connect the N1 end of civil power one, and described first indicator light LED1 is connected in parallel on the primary coil two ends of described first A.C. contactor KM1;
Primary coil one end of described second A.C. contactor KM2 connects the A2 end of civil power two, B2 end or C2 end, the other end connects 22 pin of the normally-closed contact of the first A.C. contactor KM1, 21 pin of the normally-closed contact of the first A.C. contactor KM1 connect the first relay J 1 respectively, 1 pin of the second relay J 2 and the 3rd relay J 3, first relay J 1, 3 pin of the 5th relay J 5 are connected after 5 pin of the second relay J 2 and the 3rd relay J 3 are connected in parallel, 5 pin of the 5th relay J 5 connect 3 pin of the 4th relay J 4, 5 pin of the 4th relay J 4 connect the N2 end of civil power two, second indicator light LED2 is connected in parallel on the primary coil two ends of the second A.C. contactor KM2.
2. double supply automatic switch-over circuit according to claim 1, is characterized in that: the N2 line output terminal ground connection of described civil power two.
3. double supply automatic switch-over circuit according to claim 1 or 2, is characterized in that: the N2 line output terminal of described civil power two connects ground connection after a capacitor C.
CN201420611201.0U 2014-10-21 2014-10-21 Double supply automatic switch-over circuit Active CN204167997U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420611201.0U CN204167997U (en) 2014-10-21 2014-10-21 Double supply automatic switch-over circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420611201.0U CN204167997U (en) 2014-10-21 2014-10-21 Double supply automatic switch-over circuit

Publications (1)

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CN204167997U true CN204167997U (en) 2015-02-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109127516A (en) * 2017-06-15 2019-01-04 佛山市顺德区洁家环保设备科技有限公司 A kind of Kitchen smoke exhaust ventilator equipment cleaning dispersant sprinkling cleaning machine
CN109654051A (en) * 2019-03-04 2019-04-19 大唐华银电力股份有限公司金竹山火力发电分公司 A kind of high-voltage frequency converter cooling fan power supply switching circuit and switching method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109127516A (en) * 2017-06-15 2019-01-04 佛山市顺德区洁家环保设备科技有限公司 A kind of Kitchen smoke exhaust ventilator equipment cleaning dispersant sprinkling cleaning machine
CN109654051A (en) * 2019-03-04 2019-04-19 大唐华银电力股份有限公司金竹山火力发电分公司 A kind of high-voltage frequency converter cooling fan power supply switching circuit and switching method

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