CN204597444U - A kind of connection circuit and comprise the overvoltage-undervoltage protector of this connection circuit - Google Patents
A kind of connection circuit and comprise the overvoltage-undervoltage protector of this connection circuit Download PDFInfo
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- CN204597444U CN204597444U CN201520351768.3U CN201520351768U CN204597444U CN 204597444 U CN204597444 U CN 204597444U CN 201520351768 U CN201520351768 U CN 201520351768U CN 204597444 U CN204597444 U CN 204597444U
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Abstract
The utility model provides a kind of connection circuit and comprises the overvoltage-undervoltage protector of this connection circuit, and wherein connection circuit comprises the first rectification branch road and the second rectification branch road; Described first rectification branch road, carries out rectification to the voltage signal that its collection port collects, exports the d. c. voltage signal after rectification by its output port; Described second rectification branch road, carries out rectification to the voltage signal that its collection port collects, exports the d. c. voltage signal after rectification by its output port; The output port of described first rectification branch road and the output port of described second rectification branch road are electrically connected the DC voltage output end mouth as connection circuit.Therefore, no matter be the end of incoming cables (power end) that the first rectification branch road or the second rectification branch road meet supply line, the voltage signal rectification that power supply provides by capital is export through common DC voltage output end mouth after d. c. voltage signal, without the need to distinguishing during wiring, reduce wiring difficulty, prevent the infringement that wiring error causes power consumption equipment.
Description
Technical field
The utility model relates to low-voltage distribution technical field, relates in particular to a kind of connection circuit and comprises the overvoltage-undervoltage protector of this connection circuit.
Background technology
Overvoltage or under-voltage may be produced because of the change of bulk loads in supply line, cause the damage of other power consumption equipment.In order to safeguard the safety of supply line, need to carry out overvoltage and under-voltage protection to supply line.Wherein, under-voltage protection refers generally to when supply line's voltage is lower than a set point, and protective device cuts off supply line automatically, and when line voltage distribution recovers normal by the time, protective device can recover by automatic or manual again; Overvoltage protection refers generally to when line voltage distribution is more than a set point, and protective device cuts off supply line automatically, and when line voltage distribution recovers normal by the time, protective device can recover by automatic or manual again.
In order to simplify circuit structure further; there is the overvoltage-undervoltage protector being integrated with under-voltage protection function and over-voltage protecting function; it comprises control circuit and the relay of overvoltage-undervoltage protector; the control circuit of overvoltage-undervoltage protector obtains line voltage signal value; and by line voltage signal value compared with preset range; when line voltage signal value is higher than the maximum in preset range or lower than minimum value in preset range; control relay action; cut off current supply circuit, thus the overvoltage achieved supply line or under-voltage protection.
But overvoltage-undervoltage protector of the prior art needs to distinguish end of incoming cables (finger power end) and leading-out terminal (finger load end); once wiring error; likely irreversible damage is caused to overvoltage-undervoltage protector, be unfavorable for the stable operation of electrical network.
Utility model content
For this reason; technical problem to be solved in the utility model is that overvoltage-undervoltage protector of the prior art needs to distinguish end of incoming cables (finger power end) and leading-out terminal (finger load end); once wiring error; likely irreversible damage is caused to overvoltage-undervoltage protector, be unfavorable for the stable operation of electrical network.
For solving the problems of the technologies described above, the technical solution of the utility model is as follows:
The utility model provides a kind of connection circuit, comprises the first rectification branch road and the second rectification branch road;
Described first rectification branch road, carries out rectification to the voltage signal that its collection port collects, exports the d. c. voltage signal after rectification by its output port;
Described second rectification branch road, carries out rectification to the voltage signal that its collection port collects, exports the d. c. voltage signal after rectification by its output port;
The output port of described first rectification branch road and the output port of described second rectification branch road are electrically connected the DC voltage output end mouth as connection circuit.
Connection circuit described in the utility model, described first rectification branch road comprises the first bridge circuit be made up of diode D1, D2, D3, D4;
The positive pole of described diode D1 and the negative pole of described diode D4 couple the first end as described first bridge circuit, the negative pole of described diode D1 and the negative pole of described diode D2 couple the second end as described first bridge circuit, the positive pole of described diode D2 and the negative pole of described diode D3 couple the 3rd end as described first bridge circuit, and the positive pole of described diode D3 and the positive pole of described diode D4 couple the 4th end as described first bridge circuit;
The first end of described first bridge circuit and the 3rd end are the collection port of described first rectification branch road, and the second end of described first bridge circuit and the 4th end are the output port of described first rectification branch road.
Connection circuit described in the utility model, described second rectification branch road comprises the second bridge circuit be made up of diode D5, D6, D7, D8;
The positive pole of described diode D5 and the negative pole of described diode D8 couple the first end as described second bridge circuit, the negative pole of described diode D5 and the negative pole of described diode D6 couple the second end as described second bridge circuit, the positive pole of described diode D6 and the negative pole of described diode D7 couple the 3rd end as described second bridge circuit, and the positive pole of described diode D7 and the positive pole of described diode D8 couple the 4th end as described second bridge circuit;
The first end of described second bridge circuit and the 3rd end are the collection port of described second rectification branch road, and the second end of described second bridge circuit and the 4th end are the output port of described second rectification branch road.
The utility model additionally provides a kind of overvoltage-undervoltage protector, comprises above-mentioned connection circuit;
In described connection circuit, the collection port of the collection port of the first rectification branch road and the second rectification branch road couples with the end of incoming cables of supply line and leading-out terminal respectively;
Control circuit, the DC voltage output end mouth of its voltage signal acquisition port and described connection circuit couples;
Relay, the control signal output of its control end and described control circuit couples, it is closed or disconnect that the control signal exported according to described control signal output controls the normally opened contact of described relay, and the normally opened contact of described relay and the end of incoming cables live wire of supply line and leading-out terminal live wire are in series.
Technique scheme of the present utility model has the following advantages compared to existing technology:
(1) the utility model provides a kind of connection circuit, comprises the first rectification branch road and the second rectification branch road; Described first rectification branch road, carries out rectification to the voltage signal that its collection port collects, exports the d. c. voltage signal after rectification by its output port; Described second rectification branch road, carries out rectification to the voltage signal that its collection port collects, exports the d. c. voltage signal after rectification by its output port; The output port of described first rectification branch road and the output port of described second rectification branch road are electrically connected the DC voltage output end mouth as connection circuit.Therefore, no matter be the end of incoming cables (power end) that the first rectification branch road or the second rectification branch road meet supply line, the voltage signal rectification that power supply provides by capital is export through common DC voltage output end mouth after d. c. voltage signal, without the need to distinguishing during wiring, reduce wiring difficulty, prevent the infringement that wiring error causes power consumption equipment.
(2) the utility model additionally provides a kind of overvoltage-undervoltage protector comprising this connection circuit, comprises above-mentioned connection circuit; In described connection circuit, the collection port of the collection port of the first rectification branch road and the second rectification branch road couples with the end of incoming cables of supply line and leading-out terminal respectively; Control circuit, the DC voltage output end mouth of its voltage signal acquisition port and described connection circuit couples; Relay, the control signal output of its control end and described control circuit couples, it is closed or disconnect that the control signal exported according to described control signal output controls the normally opened contact of described relay, and the normally opened contact of described relay and the end of incoming cables live wire of supply line and leading-out terminal live wire are in series.The overvoltage-undervoltage protector comprising this connection circuit described in the utility model; no matter select which end of overvoltage-undervoltage protector as end of incoming cables; the voltage signal rectification that end of incoming cables (power supply) provides can be all the reference signal that the control circuit in d. c. voltage signal input over/under voltage protector is protected as overvoltage/undervoltage by the connection circuit in overvoltage-undervoltage protector; achieve the free wiring of overvoltage-undervoltage protector; avoid the irreversible infringement that wiring error causes overvoltage-undervoltage protector, be conducive to the stable operation of electrical network.
Accompanying drawing explanation
In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is the circuit theory diagrams of connection circuit described in the utility model;
Fig. 2 is the structured flowchart comprising the overvoltage-undervoltage protector of this connection circuit described in the utility model.
In figure, Reference numeral is expressed as: 1-first rectification branch road, 2-second rectification branch road, 11-connection circuit, 12-control circuit, 13-relay.
Embodiment
Embodiment 1
Present embodiments provide a kind of connection circuit, as shown in Figure 1, comprise the first rectification branch road 1 and the second rectification branch road 2; Described first rectification branch road 1, carries out rectification to the voltage signal that its collection port collects, exports the d. c. voltage signal after rectification by its output port; Described second rectification branch road 2, carries out rectification to the voltage signal that its collection port collects, exports the d. c. voltage signal after rectification by its output port; The output port of described first rectification branch road 1 and the output port of described second rectification branch road 2 are electrically connected the DC voltage output end mouth as connection circuit.
Particularly, when the collection port of the first rectification branch road 1 connects the end of incoming cables of supply line, the collection port of the second rectification branch road 2 just connects the leading-out terminal of supply line, when the collection port of the first rectification branch road 1 connects the leading-out terminal of supply line, the collection port of the second rectification branch road 2 just connects the end of incoming cables of supply line, because the first rectification branch road 1 of connection circuit and the second rectification branch road 2 share a DC voltage output end mouth, therefore, it is no matter the first rectification branch road 1 or the second rectification branch road 2 couples with the end of incoming cables (power supply) of supply line, the voltage signal that power supply provides by capital carries out rectification and exports through DC voltage output end mouth, without the need to distinguishing end of incoming cables or leading-out terminal during wiring, reduce wiring difficulty, effectively can prevent the infringement that wiring error causes power consumption equipment.
Preferably, described first rectification branch road 1 can comprise the first bridge circuit be made up of diode D1, D2, D3, D4;
The positive pole of described diode D1 and the negative pole of described diode D4 couple the first end as described first bridge circuit, the negative pole of described diode D1 and the negative pole of described diode D2 couple the second end as described first bridge circuit, the positive pole of described diode D2 and the negative pole of described diode D3 couple the 3rd end as described first bridge circuit, and the positive pole of described diode D3 and the positive pole of described diode D4 couple the 4th end as described first bridge circuit;
The first end of described first bridge circuit and the 3rd end are the collection port of described first rectification branch road 1, and the second end of described first bridge circuit and the 4th end are the output port of described first rectification branch road 1.
Preferably, described second rectification branch road 2 comprises the second bridge circuit be made up of diode D5, D6, D7, D8;
The positive pole of described diode D5 and the negative pole of described diode D8 couple the first end as described second bridge circuit, the negative pole of described diode D5 and the negative pole of described diode D6 couple the second end as described second bridge circuit, the positive pole of described diode D6 and the negative pole of described diode D7 couple the 3rd end as described second bridge circuit, and the positive pole of described diode D7 and the positive pole of described diode D8 couple the 4th end as described second bridge circuit;
The first end of described second bridge circuit and the 3rd end are the collection port of described second rectification branch road 2, and the second end of described second bridge circuit and the 4th end are the output port of described second rectification branch road 2.
Fig. 1 gives the one of connection circuit described in the present embodiment in supply line and specifically connects example, and the collection port of the first rectification branch road 1 and L1, N1 hold and couple, and the collection port of the second rectification branch road 2 and L2, N2 hold and couple.When L1, N1 end is end of incoming cables and the voltage of L1 end is positive voltage, the circuitry that L1 end, diode D1 and DC voltage output end mouth couple, diode D3, N1 form loop between holding; When L1, N1 end is end of incoming cables and the voltage of L1 end is negative voltage, the circuitry that N1 end, diode D2 and DC voltage output end mouth couple, diode D4, L1 form loop between holding; And L2 end and N2 end cannot form loop.Now only have the first rectification branch road 1 work to carry out rectification process, and the second rectification branch road 2 does not work.Otherwise, if when L2, N2 end is for end of incoming cables, then only have the second rectification branch road 2 work to carry out rectification process, and the first rectification branch road 1 does not work.Therefore no matter be that the first rectification branch road 1 taps into line end or the second rectification branch road 2 taps into line end in connection circuit, the output of the DC voltage output end mouth of connection circuit is all the same, without the need to distinguishing end of incoming cables or leading-out terminal during wiring, very convenient.
Embodiment 2
Present embodiments provide a kind of overvoltage-undervoltage protector, as shown in Figure 2, comprise the connection circuit 11 provided in embodiment 1;
In described connection circuit 11, the collection port of the collection port of the first rectification branch road 1 and the second rectification branch road 2 couples with the end of incoming cables of supply line and leading-out terminal respectively;
Control circuit 12, the DC voltage output end mouth of its voltage signal acquisition port and described connection circuit 11 couples;
Relay 13, the control signal output of its control end and described control circuit 12 couples, it is closed or disconnect that the control signal exported according to described control signal output controls the normally opened contact of described relay 13, and the normally opened contact of described relay 13 and the end of incoming cables live wire of supply line and leading-out terminal live wire are in series.
Particularly, when the collection port of the first rectification branch road 1 connects the end of incoming cables of supply line, the collection port of the second rectification branch road 2 just connects the leading-out terminal of supply line, when the collection port of the first rectification branch road 1 connects the leading-out terminal of supply line, the collection port of the second rectification branch road 2 just connects the end of incoming cables of supply line, because the first rectification branch road 1 of connection circuit and the second rectification branch road 2 share a DC voltage output end mouth, no matter make is the first rectification branch road 1 or the second rectification branch road 2 couples with the end of incoming cables (power supply) of supply line, the voltage signal that power supply provides by capital carries out rectification and exports through DC voltage output end mouth.Therefore no matter select which end of overvoltage-undervoltage protector as end of incoming cables, the voltage signal rectification that end of incoming cables (power supply) provides can be all the reference signal that the control circuit in d. c. voltage signal input over/under voltage protector is protected as overvoltage/undervoltage by the connection circuit in overvoltage-undervoltage protector, control circuit judges whether to occur in supply line overvoltage or under-voltage according to described d. c. voltage signal, if there is overvoltage or under-voltage phenomenon, then export control signal by the control signal output of control circuit to Control end, the normally opened contact of control relay disconnects, cut off supply line's leading-out terminal (load end) power supply, achieve the free wiring of overvoltage-undervoltage protector, avoid the irreversible infringement that wiring error causes overvoltage-undervoltage protector, be conducive to the stable operation of electrical network.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range that the utility model creates.
Claims (4)
1. a connection circuit, is characterized in that, comprises the first rectification branch road (1) and the second rectification branch road (2);
Described first rectification branch road (1), carries out rectification to the voltage signal that its collection port collects, exports the d. c. voltage signal after rectification by its output port;
Described second rectification branch road (2), carries out rectification to the voltage signal that its collection port collects, exports the d. c. voltage signal after rectification by its output port;
The output port of described first rectification branch road (1) and the output port of described second rectification branch road (2) are electrically connected the DC voltage output end mouth as connection circuit.
2. connection circuit according to claim 1, is characterized in that, described first rectification branch road (1) comprises the first bridge circuit be made up of diode D1, D2, D3, D4;
The positive pole of described diode D1 and the negative pole of described diode D4 couple the first end as described first bridge circuit, the negative pole of described diode D1 and the negative pole of described diode D2 couple the second end as described first bridge circuit, the positive pole of described diode D2 and the negative pole of described diode D3 couple the 3rd end as described first bridge circuit, and the positive pole of described diode D3 and the positive pole of described diode D4 couple the 4th end as described first bridge circuit;
The first end of described first bridge circuit and the 3rd end are the collection port of described first rectification branch road (1), and the second end of described first bridge circuit and the 4th end are the output port of described first rectification branch road (1).
3. connection circuit according to claim 1 and 2, is characterized in that, described second rectification branch road (2) comprises the second bridge circuit be made up of diode D5, D6, D7, D8;
The positive pole of described diode D5 and the negative pole of described diode D8 couple the first end as described second bridge circuit, the negative pole of described diode D5 and the negative pole of described diode D6 couple the second end as described second bridge circuit, the positive pole of described diode D6 and the negative pole of described diode D7 couple the 3rd end as described second bridge circuit, and the positive pole of described diode D7 and the positive pole of described diode D8 couple the 4th end as described second bridge circuit;
The first end of described second bridge circuit and the 3rd end are the collection port of described second rectification branch road (2), and the second end of described second bridge circuit and the 4th end are the output port of described second rectification branch road (2).
4. an overvoltage-undervoltage protector, is characterized in that, comprises the arbitrary described connection circuit (11) of claim 1-3;
In described connection circuit (11), the collection port of the collection port of the first rectification branch road (1) and the second rectification branch road (2) couples with the end of incoming cables of supply line and leading-out terminal respectively;
Control circuit (12), the DC voltage output end mouth of its voltage signal acquisition port and described connection circuit (11) couples;
Relay (13), the control signal output of its control end and described control circuit (12) couples, it is closed or disconnect that the control signal exported according to described control signal output controls the normally opened contact of described relay (13), and the normally opened contact of described relay (13) and the end of incoming cables live wire of supply line and leading-out terminal live wire are in series.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520351768.3U CN204597444U (en) | 2015-05-27 | 2015-05-27 | A kind of connection circuit and comprise the overvoltage-undervoltage protector of this connection circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520351768.3U CN204597444U (en) | 2015-05-27 | 2015-05-27 | A kind of connection circuit and comprise the overvoltage-undervoltage protector of this connection circuit |
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| Publication Number | Publication Date |
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| CN204597444U true CN204597444U (en) | 2015-08-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821541A (en) * | 2015-05-27 | 2015-08-05 | 德力西电气有限公司 | Wiring circuit and overvoltage/undervoltage protector comprising the same |
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2015
- 2015-05-27 CN CN201520351768.3U patent/CN204597444U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821541A (en) * | 2015-05-27 | 2015-08-05 | 德力西电气有限公司 | Wiring circuit and overvoltage/undervoltage protector comprising the same |
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