CN208001079U - Power distribution cabinet linkage control system and its contact cabinet control circuit - Google Patents
Power distribution cabinet linkage control system and its contact cabinet control circuit Download PDFInfo
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- CN208001079U CN208001079U CN201820413866.9U CN201820413866U CN208001079U CN 208001079 U CN208001079 U CN 208001079U CN 201820413866 U CN201820413866 U CN 201820413866U CN 208001079 U CN208001079 U CN 208001079U
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Abstract
The utility model is related to power distribution cabinet linkage control system and its contact cabinet control circuits, including major loop and control loop, major loop includes the normally opened contact of first contactor and the normally opened contact of second contactor, control loop includes the first relay power branch being connected in parallel, first contactor energization branch, second contactor energization branch, first relay branch includes the first relay of connection, first normally opened contact and the second normally opened contact, first contactor energization branch includes the first contactor of connection, the normally-closed contact of first relay, second contactor energization branch includes the second contactor of connection, the normally opened contact of first contactor.The contact cabinet controling circuit structure of the utility model is simple, only need to connect a small amount of cable, reduces the cost of contact cabinet, while having reliable stability and practicability.
Description
Technical field
The utility model belongs to distribution technique field, and in particular to power distribution cabinet linkage control system and its contact cabinet control electricity
Road.
Background technology
It gets in touch with cabinet to be applied in middle high and low voltage switchgear, and is widely used in real estate and industrial and mining enterprises.In order to avoid
Because distribution fault causes busbar to power off, electric system mostly uses greatly sectionalized single busbar connection.When using single busbar power supply, normal power supply
Interconnection switch is in gate-dividing state, I sections, II section of each self-supported electricity consumption of inlet wire supply.When I sections it is main into or II section master into power failure or former
When barrier, interconnection switch is closed, is powered to one or two type loads, ensures the duration of power supply.
In the prior art, Chinese patent " a kind of two inlet wire of low-voltage distribution, one mother electricity that notification number is CN202260153U
Gas interlock system " and the Chinese patent " low-voltage distribution cabinet interlock control system " that notification number is CN204011150U, propose
A kind of contact cabinet for connecting incoming line cabinet, and the complicated of cabinet is got in touch with, controlling cable is more, leads to the cost for getting in touch with cabinet
Higher, poor reliability.
Utility model content
The purpose of this utility model is to provide power distribution cabinet linkage control system and its contact cabinet control circuit, existing for solving
Have contact cabinet complexity cable it is more caused by of high cost, poor reliability the problem of.
In order to solve the above technical problems, the utility model proposes a kind of contact cabinet control circuit, including following solution:
Including major loop and control loop, major loop includes the first normally opened contact and second contactor of first contactor
Normally opened contact, control loop include the first relay power branch being connected in parallel, first contactor energization branch, the second contact
Device energization branch, the first relay power branch, first contactor energization branch, second contactor energization branch are used to connect
The positive and negative anodes of the positive and negative anodes of first busbar voltage and the second busbar voltage, the first busbar and the second busbar are by the contact cabinet
Two sections of busbares for connection;
First relay power branch includes the first relay, the first normally opened contact and the second normally opened contact of connection, the
One normally opened contact be for the conjunction site in the main incoming line cabinet of the first busbar when breaker closing, the second normally opened contact be for
Conjunction site in the main incoming line cabinet of the second busbar when breaker closing;The first contactor energization branch includes the of connection
The normally-closed contact of one contactor, the first relay, the second contactor energization branch include the second contactor of connection, first
Second normally opened contact of contactor.
The contact cabinet control circuit of the utility model, in the first busbar and the equal normal operation of the second busbar, first is normally opened
Contact and the second normally opened contact are closed, and the normally-closed contact of the conducting of the first relay power branch, the first relay disconnects, and causes
First contactor energization branch is not turned on, and the normally opened contact of first contactor is failure to actuate, and then leads to second contactor energization branch
Road is also not turned on, and the first normally opened contact of first contactor and the normally opened contact of second contactor are failure to actuate in major loop, make connection
Network cabinet is in gate-dividing state.
When the power-off of the first busbar, the second busbar normal operation, the first normally opened contact is failure to actuate, the second normally opened contact closes
It closes, causes the first relay power branch to be not turned on, the normally-closed contact of the first relay is failure to actuate, first contactor energization branch
The normally opened contact of conducting, first contactor is closed, conducting second contactor energization branch, the first of first contactor in major loop
Normally opened contact and the normally opened contact of second contactor are closed, and contact device is made to be in "on" position, to realize the second bus belt
The load operation of dynamic first busbar.
When the first busbar normal operation, the power-off of the second busbar, similarly, the first normally opened contact closure, the second normally opened contact
It is failure to actuate, the first relay power branch is not turned on, first contactor energization branch and the conducting of second contactor energization branch, main
The first normally opened contact of first contactor and the normally opened contact of second contactor are closed in circuit, and contact device is made to be in combined floodgate shape
State, to realize that the first busbar drives the load operation of the second busbar.
The contact cabinet controling circuit structure of the utility model is simple, only need to connect a small amount of cable, reduces contact cabinet
Cost, while there is reliable stability.
Further, further include the first indicating circuit of positive and negative anodes for connecting the first busbar voltage, and for connecting the
It is both provided with indicator light in second indicating circuit of the positive and negative anodes of two busbar voltages, the first indicating circuit and the second indicating circuit.
Above-mentioned first indicating circuit is used to indicate the power blackout situation of the first busbar, and the second indicating circuit is used to indicate the second mother
The power blackout situation of line.
Further, control loop further includes the positive and negative anodes or electric for connecting the second busbar for connecting the first busbar voltage
Second relay of the positive and negative anodes of pressure;
When the second relay is used to connect the positive and negative anodes of the first busbar voltage, the first relay power branch, first connect
Tentaculum energization branch, second contactor energization branch are by the normally opened contact of the second relay for connecting the first busbar voltage
Positive and negative anodes, and be used to connect the positive and negative anodes of the second busbar voltage by the normally-closed contact of the second relay.
When the second relay is used to connect the positive and negative anodes of the second busbar voltage, the first relay power branch, first connect
Tentaculum energization branch, second contactor energization branch are by the normally opened contact of the second relay for connecting the second busbar voltage
Positive and negative anodes, and be used to connect the positive and negative anodes of the first busbar voltage by the normally-closed contact of the second relay.
Above-mentioned second relay can both connect the positive and negative anodes of the first busbar voltage, can also connect the second busbar voltage
Positive and negative anodes, when connect the first busbar voltage positive and negative anodes when, if the first busbar normal operation, the second relay conducting, second after
The normally opened contact of electric appliance is closed, and ensures the port electrification of the parallel connection;When connecting the positive and negative anodes of the second busbar voltage, if second
The normally opened contact of busbar normal operation, the conducting of the second relay, the second relay is closed, and ensures the port electrification of the parallel connection.
The utility model is by the normally opened contact and normally-closed contact of the second relay of setting, the port for connecting above-mentioned parallel connection, this reality
Though with the second novel relay and its normally opened contact, normally-closed contact when, can ensure above-mentioned parallel connection
Port is charged.
Further, the first contactor energization branch further includes closing switch and separating brake switch, and closing switch is parallel with
The third normally opened contact of first contactor.
Closing switch is used to carry out manual closing when the power-off of the first busbar or the second busbar power off, and connects first contactor
The third normally opened contact of energization branch, first contactor is closed, and forms the self-locking access of first contactor energization branch, persistently
Electricity.
In order to solve the above technical problems, the utility model also proposes a kind of power distribution cabinet linkage control system, including following solution
Certainly scheme:
Including the first busbar incoming line cabinet, the second busbar incoming line cabinet and bus contact cabinet, bus contact cabinet include major loop and
Control loop, major loop include the first normally opened contact of first contactor and the normally opened contact of second contactor, control loop packet
Include the first relay power branch, first contactor energization branch, second contactor energization branch being connected in parallel, the first relay
Device energization branch, first contactor energization branch, second contactor energization branch are used to the positive and negative of the first busbar voltage of connection
The positive and negative anodes of pole and the second busbar voltage, the first busbar and the second busbar are two sections of mothers for connection by the contact cabinet
Line;
First relay power branch includes the first relay, the first normally opened contact and the second normally opened contact of connection, the
One normally opened contact be for the conjunction site in the main incoming line cabinet of the first busbar when breaker closing, the second normally opened contact be for
Conjunction site in the main incoming line cabinet of the second busbar when breaker closing;The first contactor energization branch includes the of connection
The normally-closed contact of one contactor, the first relay, the second contactor energization branch include the second contactor of connection, first
Second normally opened contact of contactor.
Further, further include the first indicating circuit of positive and negative anodes for connecting the first busbar voltage, and for connecting the
It is both provided with indicator light in second indicating circuit of the positive and negative anodes of two busbar voltages, the first indicating circuit and the second indicating circuit.
Further, control loop further includes the second relay of the positive and negative anodes for connecting the first busbar voltage;First after
Electric appliance energization branch, first contactor energization branch, second contactor energization branch pass through the normally opened contact of the second relay
Positive and negative anodes for connecting the first busbar voltage, and by the normally-closed contact of the second relay for connecting the second busbar voltage
Positive and negative anodes.
Further, control loop further includes the second relay of the positive and negative anodes for connecting the second busbar voltage;First after
Electric appliance energization branch, first contactor energization branch, second contactor energization branch pass through the normally opened contact of the second relay
Positive and negative anodes for connecting the second busbar voltage, and by the normally-closed contact of the second relay for connecting the first busbar voltage
Positive and negative anodes.
Further, the first contactor energization branch further includes closing switch and separating brake switch, and closing switch is parallel with
The third normally opened contact of first contactor.
Description of the drawings
Fig. 1 is the control loop schematic diagram of the first contact cabinet control circuit;
Fig. 2 is the control loop schematic diagram of second of contact cabinet control circuit;
Fig. 3 is a kind of major loop schematic diagram of contact cabinet control circuit;
Fig. 4 is the control loop schematic diagram of the third contact cabinet control circuit.
Specific implementation mode
Specific embodiment of the present utility model is further described below in conjunction with the accompanying drawings.
Embodiment one:
The utility model proposes a kind of power distribution cabinet linkage control systems, including the first busbar incoming line cabinet, the second busbar inlet wire
Cabinet and bus contact cabinet with control circuit, the control circuit for getting in touch with cabinet includes major loop and control loop, and major loop includes
The normally opened contact of first contactor and the normally opened contact of second contactor, control loop as shown in Figure 1, including be connected in parallel the
One relay power branch, first contactor energization branch, second contactor energization branch, port in parallel is for connecting first
The positive and negative anodes of busbar voltage are additionally operable to the positive and negative anodes of the second busbar voltage of connection, and the first busbar and the second busbar are to pass through contact
Two section busbares of the cabinet for connection.
First relay branch includes the first relay, the first normally opened contact and the second normally opened contact of connection, and first often
Open contact be for the conjunction site in the main incoming line cabinet of first segment busbar when breaker closing, the second normally opened contact be for
Conjunction site in the main incoming line cabinet of second segment busbar when breaker closing;First contactor energization branch includes that first connected connects
The normally-closed contact of tentaculum, the first relay, second contactor energization branch include the second contactor of connection, first contactor
Normally opened contact.
The contact cabinet control circuit of the utility model, in the first busbar and the equal normal operation of the second busbar, first is normally opened
Contact and the second normally opened contact are closed, and the normally-closed contact of the conducting of the first relay power branch, the first relay disconnects, and causes
First contactor energization branch is not turned on, and the normally opened contact of first contactor is failure to actuate, and then leads to second contactor energization branch
Road is also not turned on, and the first normally opened contact of first contactor and the normally opened contact of second contactor are failure to actuate in major loop, make connection
Network cabinet is in gate-dividing state.
When the power-off of the first busbar, the second busbar normal operation, the first normally opened contact is failure to actuate, the second normally opened contact closes
It closes, causes the first relay power branch to be not turned on, the normally-closed contact of the first relay is failure to actuate, first contactor energization branch
The normally opened contact of conducting, first contactor is closed, conducting second contactor energization branch, the first of first contactor in major loop
Normally opened contact and the normally opened contact of second contactor are closed, and contact device is made to be in "on" position, to realize the second bus belt
The load operation of dynamic first busbar.
When the first busbar normal operation, the power-off of the second busbar, similarly, the first normally opened contact closure, the second normally opened contact
It is failure to actuate, the first relay power branch is not turned on, first contactor energization branch and the conducting of second contactor energization branch, main
The first normally opened contact of first contactor and the normally opened contact of second contactor are closed in circuit, and contact device is made to be in combined floodgate shape
State, to realize that the first busbar drives the load operation of the second busbar.
The contact cabinet controling circuit structure of the utility model is simple, only need to connect a small amount of cable, reduces contact cabinet
Cost, while there is reliable stability and practicability.
Further, further include the first indicating circuit of positive and negative anodes for connecting the first busbar voltage, and for connecting the
It is both provided with indicator light in second indicating circuit of the positive and negative anodes of two busbar voltages, the first indicating circuit and the second indicating circuit.
As shown in Fig. 2, above-mentioned first indicating circuit is used to indicate the power blackout situation of the first busbar, the second indicating circuit is used for
Indicate the power blackout situation of the second busbar.
Further, control loop further includes the positive and negative anodes or electric for connecting the second busbar for connecting the first busbar voltage
Second relay of the positive and negative anodes of pressure.
When the second relay is used to connect the positive and negative anodes of the first busbar voltage, the port of above-mentioned parallel connection passes through the second relay
The normally opened contact of device is used to connect the positive and negative anodes of the first busbar voltage;When the second relay is for connecting the second busbar voltage just
When cathode, the port of above-mentioned parallel connection is used to connect the positive and negative anodes of the second busbar voltage by the normally opened contact of the second relay.
Above-mentioned second relay can both connect the positive and negative anodes of the first busbar voltage, can also connect the second busbar voltage
Positive and negative anodes, when connect the first busbar voltage positive and negative anodes when, if the first busbar normal operation, the second relay conducting, second after
The normally opened contact of electric appliance is closed, and ensures the port electrification of above-mentioned parallel connection;When connecting the positive and negative anodes of the second busbar voltage, if second
The normally opened contact of busbar normal operation, the conducting of the second relay, the second relay is closed, and ensures port electrification in parallel.
Further, when the second relay is used to connect the positive and negative anodes of the first busbar voltage, the port of above-mentioned parallel connection passes through
The normally-closed contact of second relay is used to connect the positive and negative anodes of two sections of busbar voltages;When the second relay is for connecting the second busbar
When the positive and negative anodes of voltage, the port of above-mentioned parallel connection is used to connect the first busbar voltage just by the normally-closed contact of the second relay
Cathode.
The utility model is by the normally opened contact and normally-closed contact of the second relay of setting, the end for connecting above-mentioned parallel connection
Mouthful, no matter second relay and its normally opened contact of the utility model, normally-closed contact when, can ensure above-mentioned
Port electrification in parallel.
Further, first contactor energization branch further includes closing switch and separating brake switch, and closing switch is parallel with first
The third normally opened contact of contactor.Closing switch is used to carry out manual closing when the power-off of the first busbar or the second busbar power off,
First contactor energization branch is connected, the third normally opened contact of first contactor is closed, and forms first contactor energization branch
Self-locking access, persistently it is electric.
Further, the port of above-mentioned parallel connection is used to connect the positive and negative anodes of the first busbar voltage by first fuse, above-mentioned
Port in parallel is used to connect the positive and negative anodes of the second busbar voltage by second fuse, as shown in Figure 2.
Embodiment two:
The present embodiment proposes a kind of contact cabinet control circuit, including a major loop and secondary control loop, shown in Fig. 3
It is the scheme of a major loop list mother partition switch operation:DL1 indicate the main incoming line cabinet of I section of busbar, DL2 indicate II section of busbar master into
Line cabinet, I sections of contact cabinets include the normally opened contact of breaker of plastic casing QF1, contactor KM1, and II sections of contact cabinets include breaker of plastic casing
The normally opened contact of QF2, contactor KM2, wherein QF1, QF2 are in normal "on" position.Higher level's transformer low tension that comes is closed by DL1
Lock and DL2 combined floodgates drive each section of load operation respectively;When DL1 or DL2 failures or separating brake, interconnection switch is needed to close a floodgate
To drive load operation used.
The principle scheme of the secondary control loop shown in Fig. 4 for being the present embodiment:QF1/1, QF1/7 are respectively I section of busbar
The positive and negative anodes of voltage, QF2/1, QF2/7 are respectively the positive and negative anodes of II section of busbar voltage, and relay KA2 is as dual power supply relay
The switching of power supply is controlled, no matter when can ensure that circuit 05 charges.
(1) when I section of DL1 closes a floodgate, II section of DL2 closes a floodgate, and HR1, HR2 indicator light are lighted, and I section of expression, II section of busbar are normally transported
It goes, the conjunction site (DL1, the dotted line frame of DL2 is used to indicate respectively) of the DL1 accessed in circuit, DL2 breakers separate shape by original
State is transformed to "on" position, and relay KA1 obtains electric, and the normally-closed contact KA1 (51,52) of relay KA1 is opened, and presses combined floodgate at this time
Button HA does not turn on circuit, and contactor KM1 would not obtain electric, and contactor KM2 will not obtain electric, cause to get in touch with cabinet and still keep
Gate-dividing state.Such situation is the normal operating condition of two sections of circuits.
(2) after I section of DL1 fault trip, HR1 indicator lights go out, and are expressed as I section of busbar power-off.Must press at this time combined floodgate by
Button HA, HA contact closure turning circuit, contactor KM1 obtain it is electric, by the normally opened contact KM1 (13,14) of contactor KM1 with close a floodgate
Button HA parallel connections from lock closing circuit persistently electric, another pair normally opened contact KM1 (23,24) and contactor of contactor KM1
The coil of KM2 is connected, and contactor KM2 obtains electric, the circuit control of a conducting is formed at this time, to realize by II section of mother
Line drives I section of load operation.After I section of bus-bar fault excludes, need only press opening button TA can disconnect this circuit.
When II section of DL2 failure, electrification, load operation can be realized by same way.
The utility model is realized by unicom first contactor KM1 and second contactor KM2 between two electric power incoming lines
Mutual conversion.In the case of I sections of busbar masters are not charged into DL1, II section of busbar master charges into DL2, by the combined floodgate for getting in touch with cabinet
To drive I sections of load operations.When II section of busbar is not charged, I sections of busbar electrifications drive II sections again by the combined floodgate of contact cabinet
Load operation.This uninterrupted power supply solves and influences the operation of important load because any busbar is not charged, and avoiding need not
The economic loss wanted and influence.
The utility model was converted to a kind of economic and practical, control principle more by originally getting in touch with the of high cost of cabinet, control cable
Simply, the few electrical control of wiring, while meeting safe operation, practicality, reliable, the principles such as cost-effective.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the right of the utility model.
Claims (10)
1. a kind of contact cabinet control circuit, which is characterized in that including major loop and control loop, major loop includes first contactor
The first normally opened contact and second contactor normally opened contact, control loop includes the first relay power branch being connected in parallel
Road, first contactor energization branch, second contactor energization branch, the first relay power branch, first contactor energization branch
Road, second contactor energization branch are used to the positive and negative anodes of the positive and negative anodes and the second busbar voltage of the first busbar voltage of connection, the
One busbar and the second busbar are two sections of busbares for connection by the contact cabinet;
First relay power branch includes the first relay, the first normally opened contact and the second normally opened contact of connection, and first often
It is for the conjunction site in the main incoming line cabinet of the first busbar when breaker closing to open contact, and the second normally opened contact is for the
Conjunction site in the main incoming line cabinet of two busbares when breaker closing;The first contactor energization branch includes that first connected connects
The normally-closed contact of tentaculum, the first relay, the second contactor energization branch include the second contactor of connection, the first contact
Second normally opened contact of device.
2. contact cabinet control circuit according to claim 1, which is characterized in that further include for connecting the first busbar voltage
Positive and negative anodes the first indicating circuit, and positive and negative anodes for connecting the second busbar voltage the second indicating circuit, the first instruction
It is both provided with indicator light in circuit and the second indicating circuit.
3. contact cabinet control circuit according to claim 1, which is characterized in that control loop further includes for connecting first
Second relay of the positive and negative anodes of busbar voltage;First relay power branch, first contactor energization branch, second contactor
Energization branch is used to connect the positive and negative anodes of the first busbar voltage by the normally opened contact of the second relay, and by second after
The normally-closed contact of electric appliance is used to connect the positive and negative anodes of the second busbar voltage.
4. contact cabinet control circuit according to claim 1, which is characterized in that control loop further includes for connecting second
Second relay of the positive and negative anodes of busbar voltage;First relay power branch, first contactor energization branch, second contactor
Energization branch is used to connect the positive and negative anodes of the second busbar voltage by the normally opened contact of the second relay, and by second after
The normally-closed contact of electric appliance is used to connect the positive and negative anodes of the first busbar voltage.
5. contact cabinet control circuit according to claim 1, which is characterized in that the first contactor energization branch also wraps
Closing switch and separating brake switch are included, closing switch is parallel with the third normally opened contact of first contactor.
6. a kind of power distribution cabinet linkage control system, including the first busbar incoming line cabinet, the second busbar incoming line cabinet and bus contact cabinet,
Be characterized in that, bus contact cabinet includes major loop and control loop, major loop include first contactor the first normally opened contact and
The normally opened contact of second contactor, control loop include the first relay power branch being connected in parallel, first contactor energization
Branch, second contactor energization branch, the first relay power branch, first contactor energization branch, second contactor are powered
Branch is used to the positive and negative anodes of the positive and negative anodes and the second busbar voltage of the first busbar voltage of connection, and the first busbar and the second busbar are
Two sections of busbares by the contact cabinet for connection;
First relay power branch includes the first relay, the first normally opened contact and the second normally opened contact of connection, and first often
It is for the conjunction site in the main incoming line cabinet of the first busbar when breaker closing to open contact, and the second normally opened contact is for the
Conjunction site in the main incoming line cabinet of two busbares when breaker closing;The first contactor energization branch includes that first connected connects
The normally-closed contact of tentaculum, the first relay, the second contactor energization branch include the second contactor of connection, the first contact
Second normally opened contact of device.
7. power distribution cabinet linkage control system according to claim 6, which is characterized in that further include for connecting the first busbar
First indicating circuit of the positive and negative anodes of voltage, and positive and negative anodes for connecting the second busbar voltage the second indicating circuit, first
It is both provided with indicator light in indicating circuit and the second indicating circuit.
8. power distribution cabinet linkage control system according to claim 6, which is characterized in that control loop further includes for connecting
Second relay of the positive and negative anodes of the first busbar voltage;First relay power branch, first contactor energization branch, second connect
Tentaculum energization branch is used to connect the positive and negative anodes of the first busbar voltage by the normally opened contact of the second relay, and by the
The normally-closed contact of two relays is used to connect the positive and negative anodes of the second busbar voltage.
9. power distribution cabinet linkage control system according to claim 6, which is characterized in that control loop further includes for connecting
Second relay of the positive and negative anodes of the second busbar voltage;First relay power branch, first contactor energization branch, second connect
Tentaculum energization branch is used to connect the positive and negative anodes of the second busbar voltage by the normally opened contact of the second relay, and by the
The normally-closed contact of two relays is used to connect the positive and negative anodes of the first busbar voltage.
10. power distribution cabinet linkage control system according to claim 7, which is characterized in that the first contactor energization branch
Road further includes closing switch and separating brake switch, and closing switch is parallel with the third normally opened contact of first contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820413866.9U CN208001079U (en) | 2018-03-26 | 2018-03-26 | Power distribution cabinet linkage control system and its contact cabinet control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820413866.9U CN208001079U (en) | 2018-03-26 | 2018-03-26 | Power distribution cabinet linkage control system and its contact cabinet control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208001079U true CN208001079U (en) | 2018-10-23 |
Family
ID=63839225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820413866.9U Active CN208001079U (en) | 2018-03-26 | 2018-03-26 | Power distribution cabinet linkage control system and its contact cabinet control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208001079U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321682A (en) * | 2018-03-26 | 2018-07-24 | 河南森源电气股份有限公司 | A kind of power distribution cabinet linkage control system and its contact cabinet control circuit |
-
2018
- 2018-03-26 CN CN201820413866.9U patent/CN208001079U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321682A (en) * | 2018-03-26 | 2018-07-24 | 河南森源电气股份有限公司 | A kind of power distribution cabinet linkage control system and its contact cabinet control circuit |
| CN108321682B (en) * | 2018-03-26 | 2023-09-19 | 河南森源电气股份有限公司 | Power distribution cabinet interlocking control system and contact cabinet control circuit thereof |
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