CN203054520U - Control monitoring circuit used for electric power equipment - Google Patents
Control monitoring circuit used for electric power equipment Download PDFInfo
- Publication number
- CN203054520U CN203054520U CN 201220734148 CN201220734148U CN203054520U CN 203054520 U CN203054520 U CN 203054520U CN 201220734148 CN201220734148 CN 201220734148 CN 201220734148 U CN201220734148 U CN 201220734148U CN 203054520 U CN203054520 U CN 203054520U
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- relay
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- contactor
- contact
- control
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Abstract
The utility model belongs to the field of electric power switch control and status monitoring, and particularly relates to a control monitoring circuit used for electric power equipment. The control monitoring circuit comprises a first contactor and a second contactor, and further comprises a controller which is electrically connected with both the first contactor and the second contactor, wherein the controller comprises a first monitor unit and a second monitor unit; the first monitor unit consists of a first control switch, a first relay and a first isolation relay; and the second monitor unit consists of a second control switch, a second relay and a status display. The control monitoring circuit is specially designed for control and status monitoring of a single or multiple contactors in the electric power equipment, can realize switching operation and status return of the contactors with three wires and further realize interlock logic functions between different contactors conveniently, simplifies complicated wire connecting methods in the circuit, solves an EMC problem during intersection wire connection of different voltage circuits in a system, and substantially improves system reliability.
Description
Technical field
The utility model belongs to power switch control and status monitoring field, is specifically related to a kind of control observation circuit for power equipment.
Background technology
As a kind of remote controlled main circuit device, contactor is widely used in the various power equipments, the application of contactor has not singly solved the control of cut-offfing of main circuit, and can realize interlocking control between circuit by the auxiliary contact between a plurality of contactors and the different modes of connection of operating coil.But in using usually, control is weak electricity system with observation circuit, contactor coil is high tension loop, between control circuit and contactor, use auxiliary reclay to realize level conversion so have to, and the realization of observation circuit need be access to the low-voltage circuit in the weak electricity system auxiliary contact of contactor, this has just constituted low pressure and high-tension circuit mixing wiring system, can bring serious EMC(electromagnetic compatibility) problem, bring hidden danger for security of system, stable operation; Simultaneously because the wiring complexity, thereby cause line failure rate high and difficult in maintenance.
The utility model content
The purpose of this utility model is to provide a kind of control observation circuit for power equipment, this control observation circuit has been simplified the wiring between control circuit and the contactor, and light current and forceful electric power signal separated fully, improved reliability, stability and the security of circuit working greatly.
For achieving the above object, the utility model has adopted following technical scheme: a kind of control observation circuit for power equipment, comprise first contactor and second contactor, and also comprise with first contactor and second contactor being the controller that is electrically connected;
Comprise first monitoring unit and second monitoring unit in the described controller;
Described first monitoring unit is made of first gauge tap, first relay and first disconnecting relay; One end of described first gauge tap links to each other with low-tension supply, the other end of first gauge tap links to each other with the control contact of first relay, the earthing contact ground connection of first relay, be provided with low-voltage coil between the control contact of first relay and the earthing contact, and first gauge tap is by the low-voltage coil in first relay and the interlocking of the normal open switch in first relay; The normally opened contact that links to each other with normal open switch of described first relay links to each other with the coil in first contactor, and another normally opened contact that links to each other with normal open switch connects the neutral point of power circuit;
Described second monitoring unit is made of second gauge tap, second relay and status displays; One end of described second gauge tap links to each other with low-tension supply, the other end of second gauge tap links to each other with the input contact of first disconnecting relay, the output contact of described first disconnecting relay links to each other with the control contact of described second relay, the earthing contact ground connection of second relay, be provided with low-voltage coil between the control contact of second relay and the earthing contact, and second gauge tap is successively by the low-voltage coil in first disconnecting relay, second relay and the interlocking of the normal open switch in second relay; The normally opened contact that links to each other with normal open switch of described second relay links to each other with the coil in second contactor, and another normally opened contact that links to each other with normal open switch connects the neutral point of power circuit; The input end of described status displays links to each other with the normally opened contact of second contactor;
The control contact of described first disconnecting relay links to each other with normally closed contact in first contactor, and the contact that links with the control contact in first disconnecting relay connects the neutral point of power circuit.
Simultaneously, the utility model can also be able to further realization by following technical measures:
Preferably, described first disconnecting relay is the light disconnecting relay; The anode of light emitting diode links to each other with normally closed contact in first contactor in first disconnecting relay, and the negative electrode of light emitting diode links to each other with the neutral point of power circuit in first disconnecting relay.
Preferably, described status displays i.e. second disconnecting relay is the light disconnecting relay, the anode of light emitting diode links to each other with normally opened contact in second contactor in second disconnecting relay, and the negative electrode of light emitting diode links to each other with the neutral point of power circuit in second disconnecting relay.
The beneficial effects of the utility model are:
1), the utility model comprises by first gauge tap, first monitoring unit that first relay and first disconnecting relay constitute, also comprise by second gauge tap, second monitoring unit that second relay and second disconnecting relay constitute, described first relay that comprises for level conversion, second relay all solidifies the printed circuit board (PCB) in the PCB(of controller at logic control circuits such as the first interior monitoring unit and second monitoring units) in, and the outer wiring of the PCB of controller is the 220V circuit, thereby the improved cross connect that does not have light current and forceful electric power, the stability and the security that have improved circuit working greatly.
2), the utility model is simple in structure, cost is lower, the EMC problem when also having solved simultaneously different potential circuit improved cross connect in the power equipment has improved the power equipment reliability during operation greatly.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The implication of mark is as follows among the figure:
K1-first contactor K2-second contactor K3-first gauge tap
K4-second gauge tap REL1-first relay R EL2-second relay
OP1-first disconnecting relay OP2-second disconnecting relay
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
A kind of control observation circuit for power equipment as shown in Figure 1 comprises the first contactor K1 and the second contactor K2, also comprises with the first contactor K1 and the second contactor K2 being the controller that is electrically connected;
Comprise first monitoring unit and second monitoring unit in the described controller;
Described first monitoring unit is made of the first gauge tap K3, the first relay R EL1 and the first disconnecting relay OP1; The end of the described first gauge tap K3 links to each other with low-tension supply, the other end of the first gauge tap K3 links to each other with the control contact of the first relay R EL1, the earthing contact ground connection of the first relay R EL1, be provided with low-voltage coil between the control contact of the first relay R EL1 and the earthing contact, and the first gauge tap K3 is by the low-voltage coil among the first relay R EL1 and the interlocking of the normal open switch among the first relay R EL1; The normally opened contact that links to each other with normal open switch of the described first relay R EL1 links to each other with the coil among the first contactor K1, and another normally opened contact that links to each other with normal open switch connects the neutral point of power circuit;
Described second monitoring unit is made of the second gauge tap K4, the second relay R EL2 and status displays; The end of the described second gauge tap K4 links to each other with low-tension supply, the other end of the second gauge tap K4 links to each other with the input contact of the first disconnecting relay OP1, the output contact of the described first disconnecting relay OP1 links to each other with the control contact of the described second relay R EL2, the earthing contact ground connection of the second relay R EL2, be provided with low-voltage coil between the control contact of the second relay R EL2 and the earthing contact, and the second gauge tap K4 is successively by the first disconnecting relay OP1, normal open switch interlocking among low-voltage coil among the second relay R EL2 and the second relay R EL2; The normally opened contact that links to each other with normal open switch of the described second relay R EL2 links to each other with the coil among the second contactor K2, and another normally opened contact that links to each other with normal open switch connects the neutral point of power circuit; The input end of described status displays links to each other with the normally opened contact of the second contactor K2;
The control contact of the described first disconnecting relay OP1 links to each other with normally closed contact among the first contactor K1, and the contact that links with the control contact among the first disconnecting relay OP1 connects the neutral point of power circuit.
Preferably, the described first disconnecting relay OP1 is the light disconnecting relay; The anode of light emitting diode links to each other with normally closed contact among the first contactor K1 among the first disconnecting relay OP1, and the negative electrode of light emitting diode links to each other with the neutral point of power circuit among the first disconnecting relay OP1.
Preferably, the described status displays i.e. second disconnecting relay OP2 is the light disconnecting relay, the anode of light emitting diode links to each other with normally opened contact among the second contactor K2 among the second disconnecting relay OP2, and the negative electrode of light emitting diode links to each other with the neutral point of power circuit among the second disconnecting relay OP2.
Elaborate below in conjunction with 1 pair of course of work of the present utility model of accompanying drawing.
The switching manipulation of the first contactor K1 is that the first relay R EL1 on 10# line and the controller PCB plate realizes by the 220VL live wire, neutral point or the 220VN of the termination power circuit of the first relay R EL1 are zero line, the other end of the first relay R EL1 is connected to the coil of the first contactor K1 by the 12# line, and the coil of the first relay R EL1 is controlled by the first gauge tap K3 on the controller PCB plate.
When the first gauge tap K3 is closed, the first relay R EL1 conducting, the first contactor K1 closure at this moment; When the first gauge tap K3 disconnected, the first relay R EL1 disconnected, and this moment, the first contactor K1 also disconnected.
The 220VL live wire is that also the normally closed contact by the first contactor K1 and 11# line and the first disconnecting relay OP1 are that the control contact of high press polish disconnecting relay (Photomos Relay) links to each other to the 10# line, when the first contactor K1 is in off-state also namely the normally closed contact of the first contactor K1 is closed, lumination of light emitting diode among the first disconnecting relay OP1, the then phototriode conducting among the first disconnecting relay OP1, input contact and output contact among the first disconnecting relay OP1 communicate with each other; And when the first contactor K1 is in closure state also namely the normally closed contact of the first contactor K1 disconnects, light emitting diode among the first disconnecting relay OP1 is not worked, then the phototriode among the first disconnecting relay OP1 ends, and input contact and output contact among the first disconnecting relay OP1 disconnect each other.Be the on off state information that controller can obtain the described first contactor K1 by the secondary state of the first disconnecting relay OP1.
The switching manipulation of the second contactor K2 is that the second relay R EL2 on 13# line and the controller PCB plate realizes by the 220VL live wire, neutral point or the 220VN of the termination power circuit of the described second relay R EL2 are zero line, and the other end of the second relay R EL2 is connected to the coil of the second contactor K2 by the 15# line; The wire loop of the second relay R EL2 is controlled jointly by the second gauge tap K4 on the controller PCB plate, the first disconnecting relay OP1.
When the second gauge tap K4 closure, and the first contactor K1 is when being in off-state, the second relay R EL2 conducting, this moment the second contactor K2 closure; When the second gauge tap K4 disconnects or the first contactor K1 when being in closure state, the second relay R EL2 disconnects, and this moment, the second contactor K2 was in the disconnection situation.
The 220VL live wire is that also the normally opened contact by the second contactor K2 and 14# line and the second disconnecting relay OP2 are that the control contact of high press polish disconnecting relay (Photomos Relay) links to each other to the 13# line, when the second contactor K2 is closed, normally opened contact closure among the second contactor K2, then the light emitting diode among the second disconnecting relay OP2 then can obtain the on off state information of the second contactor K2 thus because of the energising conducting.
Claims (3)
1. a control observation circuit that is used for power equipment comprises first contactor (K1) and second contactor (K2), also comprises with first contactor (K1) and second contactor (K2) being the controller that is electrically connected, and it is characterized in that:
Comprise first monitoring unit and second monitoring unit in the described controller;
Described first monitoring unit is made of first gauge tap, first relay (REL1) and first disconnecting relay (OP1); One end of described first gauge tap links to each other with low-tension supply, the other end of first gauge tap links to each other with the control contact of first relay (REL1), the earthing contact ground connection of first relay (REL1), be provided with low-voltage coil between the control contact of first relay (REL1) and the earthing contact, and first gauge tap is by the low-voltage coil in first relay (REL1) and the interlocking of the normal open switch in first relay (REL1); The normally opened contact that links to each other with normal open switch of described first relay (REL1) links to each other with the coil in first contactor (K1), and another normally opened contact that links to each other with normal open switch connects the neutral point of power circuit;
Described second monitoring unit is made of second gauge tap, second relay (REL2) and status displays; One end of described second gauge tap links to each other with low-tension supply, the other end of second gauge tap links to each other with the input contact of first disconnecting relay (OP1), the output contact of described first disconnecting relay (OP1) links to each other with the control contact of described second relay (REL2), the earthing contact ground connection of second relay (REL2), be provided with low-voltage coil between the control contact of second relay (REL2) and the earthing contact, and second gauge tap is successively by first disconnecting relay (OP1), normal open switch interlocking in low-voltage coil in second relay (REL2) and second relay (REL2); The normally opened contact that links to each other with normal open switch of described second relay (REL2) links to each other with the coil in second contactor (K2), and another normally opened contact that links to each other with normal open switch connects the neutral point of power circuit; The input end of described status displays links to each other with the normally opened contact of second contactor (K2);
The control contact of described first disconnecting relay (OP1) links to each other with normally closed contact in first contactor (K1), and the contact that links with the control contact in first disconnecting relay (OP1) connects the neutral point of power circuit.
2. the control observation circuit for power equipment according to claim 1, it is characterized in that: described first disconnecting relay (OP1) is the light disconnecting relay; The anode of the middle light emitting diode of first disconnecting relay (OP1) links to each other with the normally closed contact in first contactor (K1), and the negative electrode of light emitting diode links to each other with the neutral point of power circuit in first disconnecting relay (OP1).
3. the control observation circuit for power equipment according to claim 2, it is characterized in that: described status displays i.e. second disconnecting relay (OP2) is the light disconnecting relay, the anode of the middle light emitting diode of second disconnecting relay (OP2) links to each other with the normally opened contact in second contactor (K2), and the negative electrode of light emitting diode links to each other with the neutral point of power circuit in second disconnecting relay (OP2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734148 CN203054520U (en) | 2012-12-27 | 2012-12-27 | Control monitoring circuit used for electric power equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734148 CN203054520U (en) | 2012-12-27 | 2012-12-27 | Control monitoring circuit used for electric power equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203054520U true CN203054520U (en) | 2013-07-10 |
Family
ID=48737453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220734148 Expired - Fee Related CN203054520U (en) | 2012-12-27 | 2012-12-27 | Control monitoring circuit used for electric power equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203054520U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994537A (en) * | 2019-12-05 | 2020-04-10 | 中车株洲电力机车有限公司 | Intelligent control system of vacuum circuit breaker |
-
2012
- 2012-12-27 CN CN 201220734148 patent/CN203054520U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994537A (en) * | 2019-12-05 | 2020-04-10 | 中车株洲电力机车有限公司 | Intelligent control system of vacuum circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20151227 |
|
| EXPY | Termination of patent right or utility model |