CN209216835U - A kind of control device of breaker - Google Patents

A kind of control device of breaker Download PDF

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Publication number
CN209216835U
CN209216835U CN201822269969.5U CN201822269969U CN209216835U CN 209216835 U CN209216835 U CN 209216835U CN 201822269969 U CN201822269969 U CN 201822269969U CN 209216835 U CN209216835 U CN 209216835U
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CN
China
Prior art keywords
separating brake
closing
breaker
coil
input terminal
Prior art date
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Active
Application number
CN201822269969.5U
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Chinese (zh)
Inventor
邢月良
张静波
詹新民
候立民
张社安
沈建良
张凯
王海涛
冀娟
唐捷
张鹏亮
王慧娟
温拥军
郭刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Hebei Electric Power Co Ltd
Handan Power Supply Co of State Grid Hebei Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Hebei Electric Power Co Ltd
Handan Power Supply Co of State Grid Hebei Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by State Grid Corp of China SGCC, State Grid Hebei Electric Power Co Ltd, Handan Power Supply Co of State Grid Hebei Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201822269969.5U priority Critical patent/CN209216835U/en
Application granted granted Critical
Publication of CN209216835U publication Critical patent/CN209216835U/en
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Abstract

The utility model discloses a kind of control devices of breaker, for controlling the separating brake and combined floodgate of breaker;Including closing switch module, separating brake switch module, closing coil control module and opening coil control module;The input terminal of closing switch module input and separating brake switch module connects direct current positive supply or alternating current fire wire altogether, the output end of closing switch module output end and separating brake switch module connects direct current negative supply or alternating current ground wire altogether, closing coil control module connects the closing coil of breaker, and opening coil control module connects the switching-off coil of breaker;When closing switch module is connected, control closing coil control module conducting makes the closing coil of breaker obtain electric, breaker closing;When separating brake switch module is connected, control opening coil control module conducting makes the opening coil of breaker obtain electric, breaker open operation.The utility model can control breaker closing and separating brake, directly control killer switch when avoiding maintenance, guarantee the safety of staff.

Description

A kind of control device of breaker
Technical field
The utility model relates to technical field of circuit design more particularly to a kind of control devices of breaker.
Background technique
As urbanization process develops, rare due to soil, high residential building increases, and it is negative that most switchgear houses all build underground in One layer or two layers minus, especially annual spring, summer, the flood season in Qiu Sanji, there is moist, the unsmooth situation of ventilation, humidity reaches 65% or more, by long-play, cause the insulation of electrical installation decline in part, due to insulation of electrical installation of high pressure There may be single-phase earthings and phase fault for reduction, exist when direct operating breaker divide-shut brake in route maintenance process Security risk.
Utility model content
The utility model embodiment provides a kind of control device of breaker, it is intended to solve existing in the prior art disconnected The unsafe problem of the control of road device.
The utility model embodiment provides a kind of control device of breaker, for controlling separating brake and the conjunction of breaker Lock;The control device includes closing switch module, separating brake switch module, closing coil control module and opening coil control mould Block;
The input terminal of the closing switch module input and the separating brake switch module connects direct current positive supply or friendship altogether The output end of galvanic electricity firewire, the closing switch module output end and the separating brake switch module connects direct current negative supply or friendship altogether Galvanic electricity ground wire, the closing coil control module connect the closing coil of the breaker, and the opening coil control module meets institute State the switching-off coil of breaker;
When the closing switch module is connected, the closing coil control module conducting is controlled, the conjunction of the breaker is made Brake cable circle obtains electric, the breaker closing;When the separating brake switch module is connected, controls the opening coil control module and lead It is logical, obtain the opening coil of the breaker electric, the breaker open operation.
In one embodiment, the closing switch module includes closing switch unit, switching-in control unit and the first guarantor Protect unit;
The input terminal of first protection location is the input terminal of the closing switch module, first protection location Output end is connected with the input terminal of the closing switch unit, the output end of the closing switch unit and the shutting-brake control list The input terminal of member is connected, and the output end of the switching-in control unit is the output end of the closing switch module;
The closing switch unit conducting, the switching-in control unit obtains electric.
In one embodiment, the closing switch unit includes closing switch;
The first end of the closing switch is the input terminal of the closing switch unit, and the second end of the closing switch is The output end of the closing switch unit.
In one embodiment, the switching-in control unit includes the first intermediate relay coil and first time relay Coil;
The input terminal of the input terminal of the first intermediate relay coil and the first time relay coil connects shape altogether At the input terminal of the switching-in control unit, the output end of the first intermediate relay coil and the first time relay The output end of coil connects the output end to form the switching-in control unit altogether.
In one embodiment, the closing coil control module include the first intermediate relay the first normally opened contact, The normally-closed contact of first time relay and the first protector;
The input terminal of first protector is the input terminal of the closing coil control module, first protector Output end is connected with the first end of the first normally opened contact of first intermediate relay, and the first of first intermediate relay The second end of normally opened contact is connected with the first end of the normally-closed contact of the first time relay, the first time relay Normally-closed contact second end be the closing coil control module output end.
In one embodiment, the separating brake switch module includes separating brake switch unit, separating brake control unit and the second guarantor Protect unit;
The input terminal of second protection location is the input terminal of the separating brake switch module, second protection location Output end is connected with the input terminal of the separating brake switch unit, and the output end of the separating brake switch unit and separating brake control are single The input terminal of member is connected, and the output end of the separating brake control unit is the output end of the separating brake switch module;
The separating brake switching means conductive, the separating brake control unit obtain electric.
In one embodiment, the separating brake switch unit includes separating brake switch;
The first end of the separating brake switch is the input terminal of the separating brake switch unit, and the second end of the separating brake switch is The output end of the separating brake switch unit.
In one embodiment, the separating brake switch unit further includes the second normally opened contact of the first intermediate relay;
The first end of second normally opened contact of first intermediate relay is the input terminal of the separating brake switch unit, institute The second end for stating the second normally opened contact of the first intermediate relay is connected with the first end that the separating brake switchs.
In one embodiment, the separating brake control unit includes the second intermediate relay coil and second time relay Coil;
The input terminal of the input terminal of the second intermediate relay coil and second time relay coil connects shape altogether At the input terminal of the separating brake control unit, the output end of the second intermediate relay coil and second time relay The output end of coil connects the output end to form the separating brake control unit altogether.
In one embodiment, the opening coil control module includes the normally opened contact of the second intermediate relay, second The normally-closed contact of the time relay and the second protector;
The input terminal of second protector is the input terminal of the opening coil control module, second protector Output end is connected with the first end of the normally opened contact of second intermediate relay, the normally opened contact of second intermediate relay Second end be connected with the first end of the normally-closed contact of second time relay, the normally closed touching of second time relay The second end of point is the output end of the opening coil control module.
Existing beneficial effect is the utility model embodiment compared with prior art: the utility model passes through closing switch Module and separating brake switch module control the conducting and disconnection of closing coil control module and opening coil control module, make open circuit The closing coil and opening coil of device obtain electric, control breaker closing and separating brake, directly control breaker when avoiding maintenance and open It closes, guarantees the safety of staff.
Detailed description of the invention
In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will make below to required in embodiment Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, For those of ordinary skill in the art, without any creative labor, it can also obtain according to these attached drawings Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the control device for the breaker that one embodiment of the utility model provides;
The knot of closing switch module and separating brake switch module in Fig. 1 that Fig. 2 provides for one embodiment of the utility model Structure schematic diagram.
Specific embodiment
In order to make those skilled in the art more fully understand this programme, below in conjunction with attached in this programme embodiment Figure, is explicitly described the technical solution in this programme embodiment, it is clear that described embodiment is this programme a part Embodiment, instead of all the embodiments.Based on the embodiment in this programme, those of ordinary skill in the art are not being made The range of this programme protection all should belong in every other embodiment obtained under the premise of creative work.
The specification and claims of this programme and term " includes " and other any deformations in above-mentioned attached drawing are Refer to " including but not limited to ", it is intended that cover and non-exclusive include.In addition, term " first " and " second " etc. are for distinguishing Different objects, not for description particular order.
The realization of the utility model is described in detail below in conjunction with specific attached drawing:
Fig. 1 shows a kind of control device of breaker provided by an embodiment of the present invention, for ease of description, Part relevant to the utility model embodiment is illustrated only, details are as follows:
As shown in Figure 1, a kind of control device of breaker provided by the utility model embodiment, for controlling breaker Separating brake and combined floodgate;The control device 1 includes closing switch module 110, separating brake switch module 120, closing coil control mould Block 130 and opening coil control module 140.
The input terminal of 110 input terminal of closing switch module and the separating brake switch module 120 connects direct current positive electricity altogether The output end of source or alternating current fire wire, 110 output end of closing switch module and the separating brake switch module 120 connects direct current altogether Electric negative supply or alternating current ground wire, the closing coil control module 130 connect the closing coil of the breaker, the separating brake line Circle control module 140 connects the switching-off coil of the breaker.
When the closing switch module 110 is connected, controls the closing coil control module 130 and be connected, make the open circuit The closing coil of device obtains electric, the breaker closing;When the separating brake switch module 120 is connected, the opening coil control is controlled Molding block 140 is connected, and obtains the opening coil of the breaker electric, the breaker open operation.
In the present embodiment, the both ends of closing coil control module 130 connect positive supply and negative wire circle respectively.
In the present embodiment, the both ends of opening coil control module 140 connect positive supply and negative wire circle respectively.
In practical applications, closing switch module 110 is in parallel with the switch knob of breaker, separating brake switch module 120 with The opening button of breaker is in parallel;Closing switch module 110 and separating brake switch module 120 replace the switch knob of breaker respectively And opening button.
Closing coil control module 130 is connected with the closing coil of breaker;By opening coil control module 140 and break The opening coil of road device is connected.
In the utility model embodiment, by closing switch module 110 and separating brake switch module 120, closing coil is controlled The conducting and disconnection of control module 130 and opening coil control module 140, obtain the closing coil of breaker and opening coil Electricity controls breaker closing and separating brake, directly controls killer switch when avoiding maintenance, guarantee the safety of staff.It keeps away Exempt from because the primary equipments such as breaker, current transformer, arrester, end are because the arc light of short circuit or ground fault generation is to the person Caused by injury a kind of device.Power off time mistake caused by the utility model is also avoided that because of circuit-breaker switching on-off button failure Long, the present apparatus can replace the divide-shut brake button of breaker.
In one embodiment of the utility model, the supply voltage of alternating current and direct current can be 12V-220V.
As shown in Figure 1, closing coil control module 130 includes among first in one embodiment of the utility model First normally opened contact ZJ1-1 of relay, the normally-closed contact SJ1-1 of first time relay and the first protector FU3;
The input terminal of the first protector FU3 is the input terminal of the closing coil control module 130, and described first protects The output end of shield device FU3 is connected with the first end of the first normally opened contact ZJ1-1 of first intermediate relay, in described first Between relay the first normally opened contact ZJ1-1 second end and the first time relay normally-closed contact SJ1-1 first End is connected, and the second end of the normally-closed contact SJ1-1 of the first time relay is the defeated of the closing coil control module 130 Outlet.
In practical applications, closing switch K1 is closed, the first intermediate relay coil ZJ1 and first time relay coil SJ1 obtains electric, and the first normally opened contact ZJ1-1 of the first intermediate relay closure, breaker closing coil obtains electric, breaker closing, After preset time period, the normally-closed contact SJ1-1 of first time relay is disconnected, breaker closing coil blackout.
As shown in Figure 1, the first protector FU3 can be fuse or insurance in one embodiment of the utility model Silk etc..
As shown in Fig. 2, closing switch module 110 includes closing switch unit in one embodiment of the utility model 112, switching-in control unit 113 and the first protection location 111.
The input terminal of first protection location 111 is the input terminal of the closing switch module 110, first protection The output end of unit 111 is connected with the input terminal of the closing switch unit 112, the output end of the closing switch unit 112 It is connected with the input terminal of the switching-in control unit 113, the output end of the switching-in control unit 113 is the closing switch mould The output end of block 110.
The closing switch unit 112 is connected, and the switching-in control unit 113 obtains electric.
In the present embodiment, by the conducting and disconnection of closing switch unit 112, obtaining for shutting-brake control switch unit is controlled Electricity and power loss.
In the present embodiment, the first protection location 111 is to prevent from circuit because from crossing to cause circuit burnout when flowing through over-voltage.Work as electricity When road voltage or excessive electric current, the first protection location 111 is disconnected, and plays guarantor to combined floodgate switch unit 112 and switching-in control unit 113 Shield effect.
As shown in Figure 1, the opening coil control module 140 includes second in one embodiment of the utility model The normally opened contact ZJ2-1 of intermediate relay, the normally-closed contact SJ2-1 of second time relay and the second protector FU4.
The input terminal of the second protector FU4 is the input terminal of the opening coil control module 140, and described second protects Shield device FU4 output end be connected with the first end of the normally opened contact ZJ2-1 of second intermediate relay, among described second after The second end of the normally opened contact ZJ2-1 of electric appliance is connected with the first end of the normally-closed contact SJ2-1 of second time relay, institute The second end for stating the normally-closed contact SJ2-1 of second time relay is the output end of the opening coil control module 140.
In the present embodiment, the second protector FU4 can be fuse or fuse etc..
In practical applications, when breaker is in "on" position, sub-switching operation, the first intermediate relay are carried out to breaker The second normally opened contact ZJ1-2 be in closed state, separating brake closes the switch, the second intermediate relay coil ZJ2 and the second time Relay coil SJ2 obtains electric, and the normally opened contact ZJ2-1 of the second intermediate relay closure, breaker open operation coil obtains electric, breaker Separating brake, after preset time period, the normally-closed contact SJ2-1 of second time relay is disconnected, breaker open operation coil blackout.
As shown in Fig. 2, in one embodiment of the utility model, the first protection location 111 can be fuse FU1 or Fuse etc..
As shown in Fig. 2, closing switch unit 112 includes closing switch K1 in one embodiment of the utility model.
The first end of the closing switch K1 is the input terminal of the closing switch unit 112, the closing switch K1's Second end is the output end of the closing switch unit 112.
In the present embodiment, closing switch K1 can be manual switch.
In a particular application, closing switch K1 is in parallel with the switch knob of breaker, instead of the switch knob of breaker.
As shown in Fig. 2, switching-in control unit 113 includes the first intermediate relay in one embodiment of the utility model Device coil ZJ1 and first time relay coil SJ1.
The input terminal of the input terminal of the first intermediate relay coil ZJ1 and the first time relay coil SJ1 Connect the input terminal to form the switching-in control unit 113 altogether, the output end of the first intermediate relay coil ZJ1 and described the The output end of one time relay coil SJ1 connects the output end to form the switching-in control unit 113 altogether.
As shown in Fig. 2, separating brake switch module 120 includes separating brake switch unit in one embodiment of the utility model 122, separating brake control unit 123 and the second protection location 121.
The input terminal of second protection location 121 is the input terminal of the separating brake switch module 120, second protection The output end of unit 121 is connected with the input terminal of the separating brake switch unit 122, the output end of the separating brake switch unit 122 It is connected with the input terminal of the separating brake control unit 123, the output end of the separating brake control unit 123 is the separating brake switching molding The output end of block 120.
The separating brake switch unit 122 is connected, and the separating brake control unit 123 obtains electric.
In the present embodiment, separating brake switch unit 122 is turned on or off, and control separating brake control unit 123 obtains electric or power loss.
As shown in Fig. 2, in one embodiment of the utility model, the second protection location 121 can be fuse FU2 or Fuse.
In the present embodiment, the second protection location 121 is used for the second protection location 121 when overcurrent in circuit or over-voltage It disconnects, protects separating brake switch unit 122 and separating brake control unit 123.
In one embodiment of the utility model, the first protection location 111 can the second protection location 121 can use one Protective module replaces, and the input of protective module terminates positive supply, the output end of protective module respectively with separating brake switch unit 122 and Closing switch unit 112 is connected.
As shown in Fig. 2, separating brake switch unit 122 includes separating brake switch K2 in one embodiment of the utility model.
The first end of the separating brake switch K2 is the input terminal of the separating brake switch unit 122, the separating brake switch K2's Second end is the output end of the separating brake switch unit 122.
In the present embodiment, separating brake switch K2 can be manual switch.
In a particular application, separating brake switch K2 is in parallel with the opening button of breaker, instead of the opening button of breaker.
As shown in Fig. 2, the separating brake switch unit 122 further includes in first in one embodiment of the utility model Between relay the second normally opened contact ZJ1-2.
The first end of second normally opened contact ZJ1-2 of first intermediate relay is the separating brake switch unit 122 Input terminal, the first end phase that the second end of the second normally opened contact ZJ1-2 of first intermediate relay is switched with the separating brake Even.
In the present embodiment, it is risen in the second normally opened contact ZJ1-2 that the first intermediate relay is arranged in separating brake switch unit 122 To protective effect, prevents from switching separating brake and closing switch is mistaken.
In practical applications, when carrying out sub-switching operation to breaker, it is necessary to assure breaker, which is in, to close a floodgate, and is arranged the Second normally opened contact ZJ1-2 of one intermediate relay directly carries out sub-switching operation if breaker does not carry out closing operation, Separating brake switch unit 122 does not turn on, it is necessary to carry out sub-switching operation again after first carrying out closing operation.
As shown in Fig. 2, the separating brake control unit 123 includes among second in one embodiment of the utility model Relay coil ZJ2 and the second time relay coil SJ2.
The input terminal of the input terminal of the second intermediate relay coil ZJ2 and the second time relay coil SJ2 Connect the input terminal to form the separating brake control unit 123 altogether, the output end of the second intermediate relay coil SJ2 and described the The output end of two time relay coil SJ2 connects the output end to form the separating brake control unit 123 altogether.
In one embodiment of the utility model, the voltage and current of fuse can be 220V, 5A.Intermediate relay Voltage and current range can be 220V, 5A.The voltage and current range of the time relay can be 220V, 5A.
In one embodiment of the utility model, the preset time period of the time relay be can be 0.1 second, 0.5 second etc.. The time relay includes first time relay and second time relay.
It should be noted that the identical port of label or pin are to be connected in the utility model the description and the appended drawings.
The above, above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations;Although ginseng The utility model is described in detail according to previous embodiment, those skilled in the art should understand that: it is still It is possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is equally replaced It changes;And these are modified or replaceed, various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution Spirit and scope.

Claims (10)

1. a kind of control device of breaker, which is characterized in that for controlling the separating brake and combined floodgate of breaker;The control device Including closing switch module, separating brake switch module, closing coil control module and opening coil control module;
The input terminal of the closing switch module input and the separating brake switch module connects direct current positive supply or alternating current altogether The output end of firewire, the closing switch module output end and the separating brake switch module connects direct current negative supply or alternating current altogether Ground wire, the closing coil control module connect the closing coil of the breaker, and the opening coil control module connects described disconnected The switching-off coil of road device;
When the closing switch module is connected, the closing coil control module conducting is controlled, the closing line of the breaker is made Enclose electric, the breaker closing;When the separating brake switch module is connected, the opening coil control module conducting is controlled, is made The opening coil of the breaker obtains electric, the breaker open operation.
2. the control device of breaker as described in claim 1, which is characterized in that the closing switch module includes closing a floodgate to open Close unit, switching-in control unit and the first protection location;
The input terminal of first protection location is the input terminal of the closing switch module, the output of first protection location End is connected with the input terminal of the closing switch unit, output end and the switching-in control unit of the closing switch unit Input terminal is connected, and the output end of the switching-in control unit is the output end of the closing switch module;
The closing switch unit conducting, the switching-in control unit obtains electric.
3. the control device of breaker as claimed in claim 2, which is characterized in that the closing switch unit includes closing a floodgate to open It closes;
The first end of the closing switch is the input terminal of the closing switch unit, and the second end of the closing switch is described The output end of closing switch unit.
4. the control device of breaker as claimed in claim 2, which is characterized in that the switching-in control unit includes in first Between relay coil and first time relay coil;
The input terminal of the input terminal of the first intermediate relay coil and the first time relay coil connects to form institute altogether State the input terminal of switching-in control unit, the output end of the first intermediate relay coil and the first time relay coil Output end connect the output end to form the switching-in control unit altogether.
5. the control device of breaker as described in claim 1, which is characterized in that the closing coil control module includes the First normally opened contact of one intermediate relay, the normally-closed contact of first time relay and the first protector;
The input terminal of first protector is the input terminal of the closing coil control module, the output of first protector End is connected with the first end of the first normally opened contact of first intermediate relay, and the first of first intermediate relay is normally opened The second end of contact is connected with the first end of the normally-closed contact of the first time relay, the first time relay it is normal The second end of closed contact is the output end of the closing coil control module.
6. the control device of breaker as described in claim 1, which is characterized in that the separating brake switch module includes that separating brake is opened Close unit, separating brake control unit and the second protection location;
The input terminal of second protection location is the input terminal of the separating brake switch module, the output of second protection location End is connected with the input terminal of the separating brake switch unit, the output end of the separating brake switch unit and the separating brake control unit Input terminal is connected, and the output end of the separating brake control unit is the output end of the separating brake switch module;
The separating brake switching means conductive, the separating brake control unit obtain electric.
7. the control device of breaker as claimed in claim 6, which is characterized in that the separating brake switch unit includes that separating brake is opened It closes;
The first end of the separating brake switch is the input terminal of the separating brake switch unit, and the second end of the separating brake switch is described The output end of separating brake switch unit.
8. the control device of breaker as claimed in claim 7, which is characterized in that the separating brake switch unit further includes first Second normally opened contact of intermediate relay;
The first end of second normally opened contact of first intermediate relay is the input terminal of the separating brake switch unit, described the The second end of second normally opened contact of one intermediate relay is connected with the first end that the separating brake switchs.
9. the control device of breaker as claimed in claim 6, which is characterized in that the separating brake control unit includes in second Between relay coil and the second time relay coil;
The input terminal of the input terminal of the second intermediate relay coil and second time relay coil connects to form institute altogether State the input terminal of separating brake control unit, the output end of the second intermediate relay coil and second time relay coil Output end connect the output end to form the separating brake control unit altogether.
10. the control device of breaker as described in claim 1, which is characterized in that the opening coil control module includes The normally opened contact of second intermediate relay, the normally-closed contact of second time relay and the second protector;
The input terminal of second protector is the input terminal of the opening coil control module, the output of second protector End is connected with the first end of the normally opened contact of second intermediate relay, and the of the normally opened contact of second intermediate relay Two ends are connected with the first end of the normally-closed contact of second time relay, the normally-closed contact of second time relay Second end is the output end of the opening coil control module.
CN201822269969.5U 2018-12-29 2018-12-29 A kind of control device of breaker Active CN209216835U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822269969.5U CN209216835U (en) 2018-12-29 2018-12-29 A kind of control device of breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822269969.5U CN209216835U (en) 2018-12-29 2018-12-29 A kind of control device of breaker

Publications (1)

Publication Number Publication Date
CN209216835U true CN209216835U (en) 2019-08-06

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Application Number Title Priority Date Filing Date
CN201822269969.5U Active CN209216835U (en) 2018-12-29 2018-12-29 A kind of control device of breaker

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109599279A (en) * 2018-12-29 2019-04-09 国家电网有限公司 A kind of control device of breaker
CN111190358A (en) * 2020-02-26 2020-05-22 国网河南省电力公司电力科学研究院 10kV closing angle control system and accurate control method
CN113745038A (en) * 2021-08-31 2021-12-03 国网河北省电力有限公司检修分公司 Isolating switch

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109599279A (en) * 2018-12-29 2019-04-09 国家电网有限公司 A kind of control device of breaker
CN109599279B (en) * 2018-12-29 2024-03-22 国家电网有限公司 Control device of circuit breaker
CN111190358A (en) * 2020-02-26 2020-05-22 国网河南省电力公司电力科学研究院 10kV closing angle control system and accurate control method
CN111190358B (en) * 2020-02-26 2023-03-14 国网河南省电力公司电力科学研究院 10kV closing angle control system and accurate control method
CN113745038A (en) * 2021-08-31 2021-12-03 国网河北省电力有限公司检修分公司 Isolating switch
CN113745038B (en) * 2021-08-31 2023-07-25 国网河北省电力有限公司检修分公司 Isolation switch

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