CN206481046U - High-voltage circuit breaker coil protective device and protection system - Google Patents
High-voltage circuit breaker coil protective device and protection system Download PDFInfo
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- CN206481046U CN206481046U CN201621341059.8U CN201621341059U CN206481046U CN 206481046 U CN206481046 U CN 206481046U CN 201621341059 U CN201621341059 U CN 201621341059U CN 206481046 U CN206481046 U CN 206481046U
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Abstract
The utility model provides a kind of high-voltage circuit breaker coil protective device and protection system; it is related to breaker technical field; wherein, a kind of high-voltage circuit breaker coil protective device includes control circuit and contactor, separating brake information acquisition circuit collection sub-gate signal and sub-gate circuit charged signal；Combined floodgate information acquisition circuit gathers switching signal and closing circuit charged signal；Clock circuit obtains the tripping time of switching winding and closing coil；MCU sends loop power-off signal according to clock signal, sub-gate signal or switching signal to output circuit；Output circuit is according to loop power-off signal to contactor and warning circuit sending action control signal；Warning circuit receives action control signal and sent to mobile terminal；Contactor receives action control signal and disconnects separating brake or closing circuit.When solving auxiliary contacts of circuit breaker and switching abnormal or stuck operating mechanism, switching winding or closing coil due to long-time it is electric and the problem of be burned, improve the security of breaker work.
Description
Technical field
The utility model is related to breaker technical field, more particularly, to a kind of high-voltage circuit breaker coil protective device and guarantor
Protecting system.
Background technology
In power system, the normal operation of power network is realized usually using the automatic divide-shut brake of breaker, as shown in figure 1,
The breaker of prior art burns out in order to avoid exit relay contact current interruption, is added in circuit-breaker switching on-off control loop
Separating brake, holding loop of closing a floodgate.In breaker open operation, start separating brake guard relay TBJI, separating brake guard relay it is normally opened
Holding contact TBJI2 self-sustainings, make sub-gate circuit constantly on, until breaker closes.Breaker is used after circuit-breaker switching on-off
The stronger normally opened auxiliary contact QF1 of current interruption ability disconnects sub-gate circuit, it is to avoid the poor separating brake relay of current interruption ability it is normally opened
Contact such as STJ1 or TJ1 are returned in advance and arcing is burnt out, and reliably close breaker when can guarantee that normal separating brake action.Wherein
TBJV is anti-trip relay, when sub-gate circuit in an ON state when, TBJV1 contacts open, be constantly in closing circuit disconnected
Open state, prevents the jump of breaker.In breaker closing, start combined floodgate guard relay HBJ, combined floodgate guard relay
Normally opened holding contact HBJ self-sustainings, make closing circuit constantly on, until breaker closes.Breaker is used after breaker closing
The stronger normally closed auxiliary contact QF2 of current interruption ability disconnects closing circuit, it is to avoid the poor closing relay of current interruption ability it is normally opened
Contact SHJ or ZHJ are returned in advance and arcing is burnt out, and reliably close breaker when can guarantee that normal combined floodgate and reclosing action.
Therefore, when auxiliary contacts of circuit breaker switches abnormal or stuck operating mechanism, switching winding TQ, closing coil
HQ is electric because long-time is obtained to be burnt out, while the coil of the electric current relay TBJ and electric current relay HBJ in protection device also have
It may burn out, and with the continuous improvement of automatization level, increasing operation is carried out using remote control mode, once
Break down, can not only burn coil, and be likely to burn out miscellaneous equipment, make fault spread, result in greater loss.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of high-voltage circuit breaker coil protective device and protection system
System, when switching abnormal or stuck operating mechanism to solve auxiliary contacts of circuit breaker, switching winding or closing coil are due to length
Time obtains the electric technical problem that can be burnt out.
In a first aspect, the utility model embodiment provides a kind of high-voltage circuit breaker coil protective device, including control electricity
Road and contactor, control circuit include MCU, divide-shut brake monitoring circuit, clock circuit, warning circuit, output circuit and communication electricity
Road；
Divide-shut brake monitoring circuit includes separating brake information acquisition circuit and combined floodgate information acquisition circuit, separating brake information acquisition circuit
Sub-gate signal and sub-gate circuit charged signal are gathered, and is sent to MCU；Combined floodgate information acquisition circuit gathers switching signal and combined floodgate
Loop charged signal, and send to MCU；
Clock circuit obtains the tripping time of switching winding or closing coil by divide-shut brake monitoring circuit, and generates clock
Signal is sent to MCU；
MCU sends loop power-off signal according to the clock signal of reception, sub-gate signal or switching signal to output circuit；
Output circuit is according to loop power-off signal by multiple logic threshold control relay to contactor and warning circuit
Sending action control signal；
Warning circuit receives action control signal, and is sent warning information to mobile terminal by telecommunication circuit；
Contactor receives action control signal, and disconnects sub-gate circuit, or disconnects closing circuit.
With reference in a first aspect, the utility model embodiment provide first aspect the first possible embodiment, its
In, the input interface of separating brake information acquisition circuit connects the anode of switching winding, and the input interface of combined floodgate information acquisition circuit connects
Connect the anode of closing coil.
With reference in a first aspect, the utility model embodiment provide first aspect second of possible embodiment, its
In, in addition to storage circuit, storage circuit storage log information, log information is sent out including MCU by output circuit to contactor
Send the record of action control signal.
With reference in a first aspect, the utility model embodiment provide first aspect the third possible embodiment, its
In, in addition to GPS circuitry, GPS circuitry provides time signal for MCU.
The split-second precision signal of date Hour Minute Second can be provided for CPU by GPS circuitry, it is ensured that primary cut-out line
Enclose the accuracy of protection device time.
With reference in a first aspect, the utility model embodiment provide first aspect the 4th kind of possible embodiment, its
In, when the tripping time of switching winding or closing coil reaching the first setting time, MCU passes through output circuit control contactor
Disconnect sub-gate circuit or closing circuit.
By disconnecting sub-gate circuit or closing circuit, make corresponding switching winding or closing coil dead electricity, prevent point
Brake cable circle or closing coil because for a long time it is electric and be burned out, while also effectively prevent separating brake guard relay and
Combined floodgate guard relay is burned out because long charged.
With reference in a first aspect, the utility model embodiment provide first aspect the 5th kind of possible embodiment, its
In, contactor is disconnected after sub-gate circuit or the closing circuit, is closed again through the second setting time, connection sub-gate circuit or
Closing circuit.
After contactor closure, sub-gate circuit or closing circuit recover powered, correspondingly, switching winding or closing coil weight
New powered, point (conjunction) lock contact is not returned also after the second setting time, i.e., do not carry out second point of (conjunction) lock action also.
With reference in a first aspect, the utility model embodiment provide first aspect the 6th kind of possible embodiment, its
In, when the tripping time that switching winding states closing coil reaching three setting times, and now separating brake contact or combined floodgate contact
Do not return also, i.e., do not carry out separating brake or combined floodgate also, MCU disconnects sub-gate circuit or conjunction by output circuit control contactor
Lock loop.
With reference in a first aspect, the utility model embodiment provide first aspect the 7th kind of possible embodiment, its
In, in addition to information alert circuit, information alert circuit connection MCU, and information alert circuit shows different by indicator lamp
Status information.
The different operating process or state of the high-voltage circuit breaker coil protective device are showed by indicator lamp, side
Just staff uses and judged.
Second aspect, the utility model embodiment also provides a kind of primary cut-out coil protection system, including host computer
And some high-voltage circuit breaker coil protective devices as described in first aspect and its possible embodiment, primary cut-out line
Circle protection device connects host computer by telecommunication circuit.
With reference to second aspect, the utility model embodiment provides the first possible embodiment of second aspect, its
In, host computer sends a warning message while receiving warning information to mobile terminal.
The utility model embodiment brings following beneficial effect：
The utility model embodiment provides a kind of high-voltage circuit breaker coil protective device, passes through separating brake information acquisition circuit
Sub-gate signal and sub-gate circuit charged signal are gathered, and the sub-gate signal of collection and sub-gate circuit charged signal are sent to MCU；
Combined floodgate information acquisition circuit gathers switching signal and closing circuit charged signal, and collection switching signal and closing circuit is powered
Signal is sent to MCU；Clock circuit obtains the tripping time of switching winding and closing coil by divide-shut brake monitoring circuit, and raw
Sent into clock signal to MCU, MCU is according to the sub-gate signal or switching signal of reception, and clock signal passes through and exports electricity
Road control contactor action, and then sub-gate circuit or closing circuit are disconnected, meanwhile, warning circuit sends warning information to shifting
Dynamic terminal, it is to avoid switching winding or closing coil are burned out because of long charged, are kept while it also avoid separating brake
Relay or combined floodgate guard relay are burned out because long charged, while being easy to staff to obtain breaker event in time
Hinder information.
Other feature and advantage of the present utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages are in explanation
Specifically noted structure is realized and obtained in book, claims and accompanying drawing.
To enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and
Coordinate appended accompanying drawing, be described in detail below.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the basic circuit diagram for the prior art breaker that the utility model background technology is related to；
A kind of schematic diagram for high-voltage circuit breaker coil protective device that Fig. 2 provides for the utility model embodiment；
The electricity that Fig. 3 is connected for a kind of high-voltage circuit breaker coil protective device that the utility model embodiment is provided with breaker
Lu Tu；
Fig. 4 protects the schematic diagram of system for a kind of primary cut-out coil that the utility model embodiment is provided.
Icon：1- high-voltage circuit breaker coil protective devices；11-MCU；12- divide-shut brake monitoring circuits；13- clock circuits；
14- warning circuits；15- output circuits；16- telecommunication circuits；17- storage circuits；18-GPS circuits；19- information alert circuits；2-
Contactor；3- mobile terminals；4- host computers.
Embodiment
To make the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with accompanying drawing to this
The technical scheme of utility model is clearly and completely described, it is clear that described embodiment is that the utility model part is real
Apply example, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, belongs to the scope of the utility model protection.
When there is the auxiliary contact abnormal or stuck operating mechanism of switching in current breaker, switching winding or combined floodgate
Coil is electric because long-time is obtained to be burnt out, based on this, a kind of primary cut-out coil protection that the utility model embodiment is provided
Device and protection system, can be prevented when auxiliary contact switch abnormal or stuck operating mechanism, it may occur that switching winding
Or closing coil due to obtaining electric situation about be burned for a long time.
For ease of understanding the present embodiment, first to a kind of primary cut-out disclosed in the utility model embodiment
Coil protector describes in detail.
Embodiment 1：
As shown in Fig. 2 the utility model embodiment provides a kind of high-voltage circuit breaker coil protective device, including control electricity
Road and contactor 2, control circuit include MCU 1, divide-shut brake monitoring circuit 12, clock circuit 13, warning circuit 14, output circuit
15 and telecommunication circuit 16；Divide-shut brake monitoring circuit 12 includes separating brake information acquisition circuit and combined floodgate information acquisition circuit, separating brake letter
Acquisition Circuit collection sub-gate signal and sub-gate circuit charged signal are ceased, and is sent to MCU 1；The collection of combined floodgate information acquisition circuit is closed
Lock signal and closing circuit charged signal, and send to MCU 1；Clock circuit 13 obtains separating brake by divide-shut brake monitoring circuit 12
The tripping time of coil and closing coil, and generate clock signal and send to MCU 1；MCU 1 according to the sub-gate signal of reception or
Person's switching signal, and clock signal send loop power-off signal to output circuit 15；Output circuit 15 is powered off according to loop to be believed
Number by multiple logic threshold control relay simultaneously to contactor 2 and the sending action control signal of warning circuit 14；Alarm electricity
Road 14 receives action control signal, and is sent warning information to mobile terminal 3 by telecommunication circuit 16；Contactor 2 receives dynamic
Make control signal, and disconnect sub-gate circuit, or disconnect closing circuit.
As the another embodiment of the present embodiment, high-voltage circuit breaker coil protective device also includes the He of storage circuit 17
GPS circuitry 18, the storage log information of storage circuit 17, log information is sent including MCU 1 by output circuit 15 to contactor 2
The record of action control signal, and high-voltage circuit breaker coil protective device itself fault message.In addition, the present embodiment is logical
Letter circuit 16 is preferably sent log information to mobile terminal 3 by GPRS network, and mobile terminal 3 is preferably the mobile phone set.
As the another embodiment of the present embodiment, the high-voltage circuit breaker coil protective device also includes information alert electricity
Road 19, the connection MCU 1 of information alert circuit 19, and information alert circuit 19 shows different status informations by indicator lamp, than
Such as：Running indicator is glittering during normal operation, and MCU 1 is bright by acting lamp after the output action control signal of output circuit 15, and request is remote
Fang Fuwei resets on the spot, is used with putting into next time；During the protection device failure, faulty circuit sends fault message to MCU
1, MCU 1 controls running indicator to extinguish by information alert circuit 19, while sending failure to mobile terminal 3 by telecommunication circuit 16
Own power source is closed in information, request, out of service.
As shown in figure 3, terminal X1, X2 of the high-voltage circuit breaker coil protective device described in the present embodiment meet+KM, terminal
X7, X8 meet-KM, and separating brake monitoring terminal X4 is connected on the anode of breaker open operation coil, and the monitoring terminal X5 that closes a floodgate is connected on breaker conjunction
The anode of brake cable circle, external D.C. contactor ZLC connection terminals X6 and X7, D.C. contactor ZLC normally closed contact concatenate into
Divide (conjunction) lock loop.Separating brake information acquisition circuit and combined floodgate information acquisition circuit gather the sub-gate signal and combined floodgate of breaker in real time
Signal, and the sub-gate signal detected or switching signal are inputted into MCU.If breaker can not in the first setting time of setting
When completing corresponding separating brake or closing operation, MCU sends loop power-off signal to output circuit, and output circuit is according to control signal
Two action control signals are at least while sent, is all high level or is all low level when relay receives two simultaneously
During action control signal, external D.C. contactor ZLC actions are controlled, D.C. contactor ZLC normally closed contact disconnects, so as to cut
Disconnected breaker point (conjunctions) lock ring current, to protect switching winding either closing coil not to be burned, while separating brake holding after
Electrical equipment TBJ or combined floodgate guard relay HBJ can also avoid burning out because long-time is powered.
Terminal X3 be distant place involution open into, after MCU is to output circuit sending action control signal, magnetic latching relay XJ
Action, can be in situ by button F W involution or terminal X3 progress distant place involutions on the spot.
Due to being likely to occur point (conjunction) lock operation failure for the first time during breaker use, and then carry out second point
The operation of (conjunction) lock but often succeeds, and present embodiments provides another embodiment, i.e., in first time point (conjunction) lock failure,
MCU makes breaker progress the by recovering immediately after output circuit control contactor short-time switching-off point (conjunctions) lock ring current again
Secondary point of (conjunction) lock operation, to improve the success rate of point (conjunction) lock, similarly, MCU can be made by output circuit control contactor
Sub-gate circuit or closing circuit repeatedly disconnect.
The present embodiment specific work process is：
Divide-shut brake monitoring circuit by separating brake information acquisition circuit and combined floodgate information acquisition circuit gather in real time sub-gate signal,
Switching signal and sub-gate circuit charged signal and closing circuit charged signal, by taking sub-gate signal as an example：
1.MCU only sends one-off control signal by output circuit to contactor
When separating brake information acquisition circuit detects sub-gate signal, MCU starts timing by clock circuit, if by setting
The first setting time after, separating brake information acquisition circuit still collects sub-gate circuit charged signal, illustrates brake division loop of circuit breaker
It is not turned off, MCU is acted to disconnect sub-gate circuit by output circuit control contactor, now switching winding dead electricity, it is therefore prevented that
Switching winding burns because long charged, is burned out while also prevent separating brake guard relay TBJ.
2.MCU action control signal twice is sent to contactor by output circuit
In order to ensure the separating brake success rate for improving breaker, MCU disconnects sub-gate circuit by output circuit control contactor
Afterwards, closed by the second setting time by output circuit control contactor, sub-gate circuit is connected, when the tripping of switching winding
Between when reaching three setting times, and now separating brake contact is not returned also, i.e., do not carry out second of separating brake also, and MCU passes through defeated
Go out circuit control contactor and disconnect sub-gate circuit, while relay XJ asks involution.
Therefore, the high-voltage circuit breaker coil protective device described in the present embodiment protective breaker point, closing coil it is same
When, breaker point, the success rate closed a floodgate can also be improved.In addition, the operating principle closed a floodgate is identical with separating brake, it is not superfluous herein
State.
Embodiment 2：
As shown in figure 4, the utility model embodiment, which provides a kind of primary cut-out coil, protects system, including host computer
4 and connect host computer 4 some high-voltage circuit breaker coil protective devices 1 as described in Example 1.
High-voltage circuit breaker coil protective device 1 connects host computer 4, and the log information of storage circuit is sent to host computer
4, staff is obtained the working condition of the high-voltage circuit breaker coil protective device 1 in time, and breaker state.
In the present embodiment, host computer 4 sends a warning message while receiving warning information to mobile terminal, it is to avoid occur
The situation that warning information can not be sent to by one party in time by network reason.
The primary cut-out coil protection system that the utility model embodiment is provided, the height provided with above-described embodiment is broken
Road device coil protector 1 has identical technical characteristic, so can also solve identical technical problem, reaches identical technology
Effect.
It is apparent to those skilled in the art that, for convenience and simplicity of description, the system of foregoing description
With the specific work process of device, the corresponding process in preceding method embodiment is may be referred to, be will not be described here.
In addition, in the description of the utility model embodiment, unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly be connected
Connect；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, can
To be the connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the utility model.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outer " are, based on orientation shown in the drawings or position relationship, to be only
Described for the ease of description the utility model and simplifying, rather than to indicate or imply that signified device or element must have specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.
Finally it should be noted that：Embodiment described above, embodiment only of the present utility model, to illustrate this
The technical scheme of utility model, rather than its limitations, protection domain of the present utility model are not limited thereto, although with reference to foregoing
The utility model is described in detail embodiment, it will be understood by those within the art that：It is any to be familiar with this skill
The technical staff in art field is in the technical scope that the utility model is disclosed, and it still can be to the skill described in previous embodiment
Art scheme is modified or can readily occurred in change, or carries out equivalent substitution to which part technical characteristic；And these modifications,
Change is replaced, and the essence of appropriate technical solution is departed from the spirit and model of the utility model embodiment technical scheme
Enclose, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model described should be wanted with right
The protection domain asked is defined.
Claims (10)
1. a kind of high-voltage circuit breaker coil protective device, it is characterised in that including control circuit and contactor, the control circuit
Including MCU, divide-shut brake monitoring circuit, clock circuit, warning circuit, output circuit and telecommunication circuit；
The divide-shut brake monitoring circuit includes separating brake information acquisition circuit and combined floodgate information acquisition circuit, the separating brake information gathering
Circuit gathers sub-gate signal and sub-gate circuit charged signal, and sends to the MCU；The combined floodgate information acquisition circuit gathers institute
Switching signal and the closing circuit charged signal are stated, and is sent to the MCU；
When the clock circuit obtains the tripping of the switching winding or the closing coil by the divide-shut brake monitoring circuit
Between, and generate clock signal and send to the MCU；
The MCU is according to the clock signal of reception, the sub-gate signal or the switching signal to the output circuit
Send loop power-off signal；
The output circuit according to the loop power-off signal by multiple logic threshold control relay to the contactor and
The warning circuit sending action control signal；
The warning circuit receives the action control signal, and is sent warning information to mobile whole by the telecommunication circuit
End；
The contactor receives the action control signal, and disconnects the sub-gate circuit, or disconnects the closing circuit.
2. high-voltage circuit breaker coil protective device according to claim 1, it is characterised in that the separating brake information gathering electricity
The input interface on road connects the anode of the switching winding, and the input interface connection of the combined floodgate information acquisition circuit is described to close a floodgate
The anode of coil.
3. high-voltage circuit breaker coil protective device according to claim 1, it is characterised in that also including storage circuit, institute
Storage circuit storage log information is stated, the log information is sent out including the MCU by the output circuit to the contactor
Send the record of the action control signal.
4. high-voltage circuit breaker coil protective device according to claim 1, it is characterised in that also including GPS circuitry, described
GPS provides time signal for the MCU.
5. high-voltage circuit breaker coil protective device according to claim 1, it is characterised in that when the switching winding or institute
When the tripping time for stating closing coil reaches the first setting time, the MCU controls the contactor by the output circuit
Disconnect the sub-gate circuit or the closing circuit.
6. high-voltage circuit breaker coil protective device according to claim 5, it is characterised in that the contactor disconnects described
After sub-gate circuit or the closing circuit, it is closed again through the second setting time, connects the sub-gate circuit or the combined floodgate
Loop.
7. high-voltage circuit breaker coil protective device according to claim 6, it is characterised in that when the switching winding or institute
When the tripping time for stating closing coil reaches three setting times, and now separating brake contact or combined floodgate contact are not returned also, described
MCU controls the contactor to disconnect the sub-gate circuit or the closing circuit by the output circuit.
8. the high-voltage circuit breaker coil protective device according to claim any one of 1-7, it is characterised in that also including information
Cue circuit, described information cue circuit connects the MCU, and described information cue circuit shows different shapes by indicator lamp
State information.
9. a kind of primary cut-out coil protects system, it is characterised in that appoint including host computer and some such as claim 1-8
High-voltage circuit breaker coil protective device described in one, the high-voltage circuit breaker coil protective device is connected by the telecommunication circuit
Connect the host computer.
10. primary cut-out coil according to claim 9 protects system, it is characterised in that the host computer is received
While the warning information warning information is sent to the mobile terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621341059.8U CN206481046U (en) | 2016-12-08 | 2016-12-08 | High-voltage circuit breaker coil protective device and protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621341059.8U CN206481046U (en) | 2016-12-08 | 2016-12-08 | High-voltage circuit breaker coil protective device and protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206481046U true CN206481046U (en) | 2017-09-08 |
Family
ID=59756886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621341059.8U Expired - Fee Related CN206481046U (en) | 2016-12-08 | 2016-12-08 | High-voltage circuit breaker coil protective device and protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206481046U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109693689A (en) * | 2018-12-21 | 2019-04-30 | 株洲中车机电科技有限公司 | It is a kind of for draw cutting safety control system and method |
| CN109709374A (en) * | 2019-01-21 | 2019-05-03 | 江苏金智科技股份有限公司 | A kind of residual voltage detection circuit |
| CN111756024A (en) * | 2020-06-11 | 2020-10-09 | 深圳供电局有限公司 | Circuit breaker control circuit |
| CN114023608A (en) * | 2021-09-23 | 2022-02-08 | 河南平高电气股份有限公司 | High-voltage circuit breaker and locking control system thereof |
| CN114264940A (en) * | 2020-09-16 | 2022-04-01 | 深圳绿米联创科技有限公司 | Abnormity protection method, abnormity protection device, control equipment and protection system |
-
2016
- 2016-12-08 CN CN201621341059.8U patent/CN206481046U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109693689A (en) * | 2018-12-21 | 2019-04-30 | 株洲中车机电科技有限公司 | It is a kind of for draw cutting safety control system and method |
| CN109693689B (en) * | 2018-12-21 | 2021-05-25 | 株洲中车机电科技有限公司 | Safety control system and method for traction cut-off |
| CN109709374A (en) * | 2019-01-21 | 2019-05-03 | 江苏金智科技股份有限公司 | A kind of residual voltage detection circuit |
| CN109709374B (en) * | 2019-01-21 | 2021-03-16 | 江苏金智科技股份有限公司 | Residual voltage detection circuit |
| CN111756024A (en) * | 2020-06-11 | 2020-10-09 | 深圳供电局有限公司 | Circuit breaker control circuit |
| CN114264940A (en) * | 2020-09-16 | 2022-04-01 | 深圳绿米联创科技有限公司 | Abnormity protection method, abnormity protection device, control equipment and protection system |
| CN114023608A (en) * | 2021-09-23 | 2022-02-08 | 河南平高电气股份有限公司 | High-voltage circuit breaker and locking control system thereof |
| CN114023608B (en) * | 2021-09-23 | 2024-05-24 | 河南平高电气股份有限公司 | High-voltage circuit breaker and locking control system thereof |
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Granted publication date: 20170908 Termination date: 20171208 |