CN204290261U - A kind of medium voltage network breaker operator loop - Google Patents
A kind of medium voltage network breaker operator loop Download PDFInfo
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- CN204290261U CN204290261U CN201420801212.5U CN201420801212U CN204290261U CN 204290261 U CN204290261 U CN 204290261U CN 201420801212 U CN201420801212 U CN 201420801212U CN 204290261 U CN204290261 U CN 204290261U
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- branch road
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- relay
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Abstract
A kind of medium voltage network breaker operator loop, comprise the positive and negative binding post for attended operation power supply, walk abreast between positive and negative binding post and be provided with shutting-brake control branch road, tripping operation controlling brancher, co-bit operation branch road, jumps bit manipulation branch road, co-bit monitors branch road, jump position and monitor branch road, co-bit input branch road, anti-jump protection branch road and remote control operation branch road; Jump position and monitor that auxiliary contact head end often opened by branch road and all external positive binding post of shutting-brake control branch road and breaker energy storage, breaker energy storage is often opened auxiliary contact time end and is connected negative binding post through breaker closing coil; Co-bit monitors branch road and the tripping operation all external positive binding post of controlling brancher and circuit breaker trip coil head end, and circuit breaker trip coil time end connects negative binding post; Jump position and monitor branch road, remote control operation branch road and co-bit input branch road are opened and are connected to central processing unit into end.The utility model realizes Microcomputer Protection and the integration of breaker operator loop, simplifies the wiring of operation circuit.
Description
Technical field
The utility model relates to the indoor outer mechanism type breaker operator loop of Medium voltage power supply system, is specifically related to a kind of medium voltage network breaker operator loop.
Background technology
The operation circuit of microcomputer breaker is integrated with microcomputer protecting device, compared with conventional electromagnetic relay protection mode, has wiring simple, the features such as reliability is high, and cost is low.
Medium voltage network is the electric power system in the face of terminal use substantially, the use of medium voltage breaker widely, therefore also just occurred the fault miscellaneous that different breaker operator loops reflects, wherein more common fault has: circuit breaker closing by hand when not having energy storage causes closing coil to burn out; Deadlock is there is in cause asynchronous with the trip-proof lockout of breaker body of the anti-jump loop on breaker operator loop to during breaker operator; The improper circuit-breaker status position that causes of the position monitoring circuit wiring on breaker operator loop is contrary; Breaker operator circuit connection is complicated.
Utility model content
The purpose of this utility model is for above-mentioned the problems of the prior art, there is provided a kind of wiring simple, safe and reliable, can to the effective locking of anti-jump loop, and the medium voltage network breaker operator loop that coil can not be caused to burn out of closing a floodgate when breaker control circuit broken string and artificial wiring error.
To achieve these goals, the technical solution adopted in the utility model is: comprise the positive and negative binding post for attended operation power supply, walk abreast between described positive and negative binding post and be provided with shutting-brake control branch road, tripping operation controlling brancher, co-bit operation branch road, jumps bit manipulation branch road, co-bit monitors branch road, jump position and monitor branch road, co-bit input branch road, anti-jump protection branch road and remote control operation branch road;
Described jumping position monitors that auxiliary contact head end often opened by branch road and all external positive binding post of shutting-brake control branch road and breaker energy storage, and breaker energy storage is often opened auxiliary contact time end and connected negative binding post through breaker closing coil; Described co-bit monitors branch road and the tripping operation all external positive binding post of controlling brancher and circuit breaker trip coil head end, and circuit breaker trip coil time end connects negative binding post;
Described jumping position monitors branch road, remote control operation branch road, co-bit monitors respectively by jumping position, branch road and co-bit input branch road monitor that branch road is opened into end, remote control operation branch road is opened into end, and co-bit monitors that branch road is opened to open into end and co-bit input branch road and is connected to central processing unit into end.
Described jumping position monitors that branch road comprises the first optocoupler for isolating the two ends signal of telecommunication, two inputs of the first optocoupler connect positive binding post respectively and breaker energy storage often opens auxiliary contact head end, and two outputs of the first optocoupler connect jumping position respectively and monitor that branch road is opened into end and ground wire.
Described anti-jump protection branch road comprises anti-trip relay; described shutting-brake control branch road comprises the combined floodgate latching relay that head end is connected with the 3rd anti-jump auxiliary contact of anti-trip relay, and auxiliary contact head end is often opened in time end connecting breaker energy storage of combined floodgate latching relay.
Described co-bit operation branch road comprises the rear relay coil of conjunction, and closes the three maintenance auxiliary contact connection shutting-brake control branch road of rear relay coil by combined floodgate latching relay.
After described jumping bit manipulation branch road comprises conjunction, second of relay coil often drives auxiliary contact, and second often opens auxiliary contact external remote control operation branch road, hand trip(ping) loop time end and the hard pressing plate of trip protection.
Described remote control operation branch road comprises remote control closing relay and operates branch road by the remote control that the second optocoupler is connected with remote control closing relay to be opened into end.
The described hard pressing plate of shutting-brake control branch road external reclosing protection switching, the remote control closing relay of remote control operation branch road and closing by hand snap switch link.
Described tripping operation controlling brancher comprises tripping operation latching relay, and described tripping operation latching relay connects positive binding post by the second tripping operation auxiliary contact, and tripping operation latching relay connects negative binding post through circuit breaker trip coil.
Described co-bit monitors that branch road comprises the 3rd optocoupler for isolating the two ends signal of telecommunication, two inputs of the 3rd optocoupler connect positive binding post and circuit breaker trip coil head end respectively, and two outputs of the 3rd optocoupler connect co-bit respectively and monitor that branch road is opened into end and ground wire.
Described co-bit input branch road comprises the 4th optocoupler for isolating the two ends signal of telecommunication, two inputs of the 4th optocoupler connect power supply respectively and after closing, the magnetic of relay coil remains closed contact, and two outputs of the 4th optocoupler connect co-bit input branch road respectively and open into end and ground wire.
Compared with prior art, the utility model has following beneficial effect: by connecting shutting-brake control branch road, tripping operation controlling brancher, co-bit operation branch road, jump bit manipulation branch road, co-bit monitors branch road, jumps position and monitors branch road, co-bit input branch road, anti-jump protection branch road and remote control operation branch road, realize the reliable locking of operations staff's and anti-jump loop overall to circuit breaker, when the non-energy storage of circuit breaker, energy storage position switch disconnects the loop of shutting-brake control branch road and closing coil; When tripping operation controlling brancher and shutting-brake control branch road are in energized condition simultaneously; the excitation of tripping operation controlling brancher makes circuit breaker trip coil motion; because tripping operation controlling brancher repeat circuit auxiliary contact close; and then affect the action of anti-jump protection branch road; anti-jump protection branch road disconnects combined floodgate latching relay and closing coil loop by normally-closed contact; its normally opened contact closes, and keeps anti-jump protection branch road coil to be in energized condition, therefore can not produce the phenomenon that closing coil burns out.The utility model is jumped position and is monitored branch road; remote control operation branch road; co-bit monitors respectively by jumping position, branch road and co-bit input branch road monitor that branch road is opened into end; remote control operation branch road is opened into end; co-bit monitors that branch road is opened to open into end and co-bit input branch road and is connected to central processing unit into end; Microcomputer Protection and the integration of breaker operator loop can be realized; wiring is simple; reliable operation; effectively can overcome the general deficiency in current breaker operator loop, ensure that the reliability of circuit breaker in the work of medium voltage network linear quadratic control.
Accompanying drawing explanation
Fig. 1 overall structure circuit diagram of the present utility model
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
See Fig. 1, breaker operator loop external terminal signal instruction:
1) the DC power supply DC220V in positive binding post+KM, negative binding post-KM attended operation loop;
2) parallelly between positive binding post+KM, negative binding post-KM shutting-brake control branch road 3 is provided with, tripping operation controlling brancher 7, co-bit operation branch road 4, jump bit manipulation branch road 6, co-bit monitors branch road 8, jump position and monitor branch road 1, co-bit input branch road 9, anti-jump protection branch road 2 and remote control operation branch road 5;
3) the external breaker energy storage of energy storage terminal CNWZ often opens the head end of auxiliary contact, the head end of the auxiliary contact of the secondary termination circuit breaker of auxiliary contact is often opened in energy storage, the closing coil head end of the secondary termination circuit breaker of the auxiliary contact of circuit breaker, closing line circle time termination bears binding post-KM;
4) time end of the external closing by hand snap switch of closing by hand terminal SDHZ;
5) reclosing terminal CHZCK external reclosing protection switching hard pressing plate HZLP head end, reclosing protection switching hard pressing plate HZLP termination SDHZ terminal;
6) time end in the external hand trip(ping) loop of hand trip(ping) terminal SDTZ; the head end of the tripping operation external trip protection of terminal TZCK hard pressing plate TZLP brace; the secondary termination trip protection binding post BHTZ of trip protection hard pressing plate TZLP brace; the auxiliary of the external circuit breaker of breaking coil terminal TZXQ often opens the head end of node to breaking coil, time external-KM of end of breaking coil.
Jump position and monitor branch road 1, remote control operation branch road 5, co-bit monitors respectively by jumping position, branch road 8 and co-bit input branch road 9 monitor that branch road is opened into end DIN1, remote control operation branch road is opened into end DIN2, co-bit monitors that branch road is opened into end DIN3, and co-bit input branch road is opened and is connected to central processing unit into end DIN4.
The effect of each element in breaker operator loop:
1) magnetic bead CR1, CR2, CR3 in circuit absorb the high frequency noise in himself loop, and magnetic bead model all adopts BLM21BD102SN1D;
2) electric capacity C1, C2, C5 is High frequency filter, and electric capacity model selects CT4-63V-0.1 μ F; Electric capacity C3, C4, C6 are shunt capacitance, do decoupling use, and electric capacity model selects DE2E3KH102MB3;
3) diode D1, D7, D12 prevents oppositely misleading of bypass optocoupler, the reverse interference signal of shielding bypass optocoupler, and diode model selects IN4007; Diode D2, D6, D8 provide continuous current circuit, protect the coil at its two ends, and diode model selects IN4007; Diode D5, D9 realize the unilateal conduction effect of signal, and ensure the direction that corresponding circuit signal flows to, diode model selects IN5408; Diode D3, D4, D10, D11 play clamping action, and ensure that the voltage at its two ends is 0.7V, diode model selects IN5408;
4) the first optocoupler U1, the second optocoupler U2, the 3rd optocoupler U3, the 4th optocoupler U4 isolate the signal of telecommunication at its two ends, strengthen the antijamming capability in self loop;
5) resistance R1, R2, R4, R5, R10, R11, R12, R14, R15, R16, R21, R22, R24 be evanescent voltage in self loop, ensures that the device in its corresponding circuit provides operating current; R3, R13, R23 provide optocoupler shunting action, prevent optocoupler overcurrent, protection optocoupler; R6, R7, R8, R9, R17, R18, R19, R20 provide shunting action when afterflow and normal work, realize the different circuit-breaker switching on-off coil current of this operation circuit self adaptation.
6) bi-directional voltage stabilizing diode TVS1, TVS2, TVS3 are in self loop, and carry out overvoltage protection to its two terminal device, model selects SA5.0CA;
7) anti-trip relay TBJVA is voltage starting relay, and model selects DSP1-DC24V; Combined floodgate latching relay HBJA and tripping operation latching relay TBJA is current start type relay, and model selects ST2-DC1.5V; After closing, relay HHJA is twin coil magnetic latching relay, model is ST2-L2-DC24V, when it meets starting current, its contact HHJD just carries out magnetic and remains closed, and this contact is once closed, although relay HHJA coil losing electricity after closing, its contact still remains unchanged, only when close after relay HHJA second often open auxiliary contact HHJB divide rear coil meet starting current charged time, this contact disconnect, return its normally open.
The contact in breaker operator loop illustrates:
Second keep auxiliary contact HBJB, the 3rd keep auxiliary contact HBJC be combined floodgate latching relay HBJA often drive auxiliary contact, second keeps auxiliary contact HBJB to provide combined floodgate inhibit signal to closing circuit, ensures that circuit breaker reliably closes a floodgate; 3rd keeps auxiliary contact HBJC to provide path to closing rear relay HHJA action.Second anti-jump auxiliary contact TBJVB is the auxiliary contact of anti-trip relay TBJVA, for anti-jump loop provides maintenance return path; Second tripping operation auxiliary contact TBJB, the 3rd tripping operation auxiliary contact TBJC are the auxiliary contact of tripping operation latching relay TBJA, second tripping operation auxiliary contact TBJB provides tripping operation inhibit signal for trip(ping) circuit, ensure circuit breaker reliable trip, 3rd tripping operation auxiliary contact TBJC provides enabling signal path to anti-trip relay TBJVA, is prepared successively by the closed-TBJVA action of TBJA action-TBJC; 3rd anti-jump auxiliary contact TBJVC is the normally closed auxiliary contact of anti-trip relay TBJVA, is disconnected successively by TBJVA action-TBJVC, cuts off closing circuit, ensures that circuit breaker does not close a floodgate when anti-trip relay TBJVA action; YHJB, YHJC, YTJB, YTJC are respectively the inner remote control closing relay of device, remote control tripping relay often open auxiliary contact, when remote operation has signal, its signal enters closing circuit or trip(ping) circuit by YHJB, YHJC, YTJB, YTJC, realizes remote control combined floodgate or remote control tripping operation; CXJB, CXJC, what BTJB, BTJC were respectively the multiple switching relay of device inside and trip protection relay often drives auxiliary contact, realizes the protection to the High Voltage Circuit Breaker Condition.
The operation principle in breaker operator loop:
1) breaker energy storage loop: to the female power supply of upper conjunction, energy storage position is in place, its normally opened contact closes, and normally-closed contact disconnects its tank circuit;
2) circuit-breaker status: under gate-dividing state, circuit breaker is often driven auxiliary contact and is disconnected, and normally closed auxiliary contact closes; Under "on" position, circuit breaker is often driven auxiliary contact and is closed, and normally closed auxiliary contact disconnects.
3) circuit breaker is jumped position and is monitored that branch road 1 passes through energy storage position head end-energy storage position time end-energy storage position time end-circuit breaker normally-closed contact head end-circuit breaker normally-closed contact time end-breaker closing coil head end-breaker closing coil time end--KM of+KM-R1-U1-R2-CR1-closing circuit successively, form current circuit, first optocoupler U1 conducting, it is zero that jumping position monitors that branch road is opened into end DIN1 current potential, open into the I/O pin to CPU, monitor circuit breaker and be in a point position state.Although now breaker coil flows through the electric current of jumping position monitoring circuit, this electric current far can not encourage this coil motion, so circuit breaker can not close a floodgate, is only provide path to jumping position monitoring circuit.
4) circuit breaker co-bit monitors that branch road 8 monitors branch road 1 roughly the same with jumping position.
5) when closing by hand or remote control are closed a floodgate, voltage enters anti-trip relay TBJVA anti-jump loop and relay coil HHJA closing circuit after closing respectively by diode D5.(1) under normal circumstances, the latching relay TBJA of now tripping can not action, so, switching signal enters combined floodgate latching relay HBJA by the 3rd anti-jump auxiliary contact TBJVC, closing circuit forms current circuit, and closed by HBJA action-HBJB successively, circuit breaker reliably closes a floodgate; Close-U4 conducting-DIN4 by the closed-HHJA action-HHJD of HBJC is successively low level simultaneously.(2) when protecting combined floodgate; now form current circuit by CXJB-TBJVC-HBJA successively; closed by HBJA action-HBJB successively; circuit breaker reliably closes a floodgate; although now the 3rd keeps auxiliary contact HBJC to close; but relay coil HHJA does not have power supply signal after closing, so be in off-state-HHJD disconnection-DIN4 by HHJA to be successively in high level state.
6) (1) is when manual brake separating or remote control separating brake, and switching signal enters sub-gate circuit by diode D9, is closed successively, the reliable separating brake of circuit breaker by TBJA energized action-TBJB; Disconnect by HHJB energized action-HHJD-U4 dead electricity-the DIN4 that resets successively simultaneously and be in high level state.(2) when trip protection, often open auxiliary contact BTJB, BTJC of trip protection relay close, and trip signal is closed by TZLP to sub-gate circuit-TBJA energized action-TBJB successively, the reliable separating brake of circuit breaker; Now second often open auxiliary contact HHJB not the electric preservation-HHJD that resets remains closed-U4 and obtains electric-DIN4 and be in low level state.
In actual applications, the utility model operation circuit under normal circumstances can reliably separating brake or combined floodgate:
1) in breaker operator circuit process, when certain reason causes breaker tripping and closing entry signal to occur simultaneously, can be produced by this operation circuit: (1) trip(ping) circuit is often driven auxiliary contact cause breaking coil akinesia to cause anti-trip relay TBJVA to reset owing to being in series with circuit breaker, can only be in the state waiting for separating brake; (2) because closing circuit has possessed the condition of conducting, so successively by HBJA action-HBJB action, circuit breaker reliably closes a floodgate; (3) circuit breaker is in "on" position; trip(ping) circuit is basic turn-on condition; closed by TBJA action-TBJB successively; the reliable separating brake of circuit breaker; simultaneously close-TBJVA action-TBJVC by TBJC successively to reset and disconnect-cut off the condition of closing circuit conducting again; so circuit breaker finally can only be in gate-dividing state, prevent the jump state of circuit breaker, protect circuit breaker.
2) in closing circuit, devise HBJA combined floodgate latching relay, its auxiliary contact HBJB connects and ensures that closing circuit continues reliable conducting, ensure that the reliable combined floodgate of circuit breaker; In sub-gate circuit, devise TBJA tripping operation latching relay, its auxiliary contact TBJB connects and ensures that trip(ping) circuit continues reliable conducting, ensure that the reliable separating brake of circuit breaker.Thus the divide-shut brake pulse duration avoided due to protective device is less than the problem that the intrinsic branch wire time of circuit breaker self brings circuit-breaker switching on-off failure, thus ensure that reliable separating brake, the combined floodgate of circuit breaker.
3) operation of circuit breaker has been divided out to be manual operation or the operation ensureing self by diode D5, D9, when closing by hand or remote control are closed a floodgate, meeting the closed-U4 conducting-DIN4 of operation condition-HHJD by HHJA is successively low level, when reclosing is carried out in protection, if combined floodgate latching relay HHJA does not meet operation condition, it is low level that co-bit input branch road is opened into end DIN4; Close once magnetic remains closed contact HHJD; only when manual brake separating or remote control separating brake; meeting operation condition-HHJD reset disconnection-U4 reset-DIN4 by HHJB is successively high level, if when protection inlet wire trips certainly, open have not a particle of impact into end DIN4 to co-bit input branch road.By opening the reading into end DIN4 level signal to co-bit input branch road, CPU is easy to just complete: (1) position of the switch uncorresponding start-up reclosing; (2) hand jumps lock-reclosing lock, after trip protection, co-bit input branch road is opened and is remained unchanged into level into opening of end DIN4, after only having manual or remote control tripping operation, the level that co-bit input branch road is held into end DIN4 just can overturn, by CPU to reclosing capacitor discharge, thus realize the locking to reclosing; (3) hand jumps locking prepared auto restart, and its principle is the same with hand jumping lock-reclosing lock; (4) the not corresponding test accident in position of the switch resultant signal.Like this, by relay after diode D5, D9 and conjunction, simulate the function of the KK operating handle of traditional switch, both continued the traditional habit of electric power system, also meet the needs of Automatization Technology in Transformer Substation simultaneously.
4) by co-bit monitoring circuit and breaker energy storage position switch; jumping position monitors that branch road is opened and monitors that branch road is opened into end DIN3 into end DIN1, co-bit; protective device can the reliability in real time monitoring divide-shut brake loop; jump co-bit at operation circuit back panel wiring simultaneously, thus eliminate the wiring of external jumping co-bit supervision.
5) opened the level state of entry loop DIN2 by remote control, protective device can realize locking remote operation very cleverly, does not need additional locking remote to open into signal again.
6) when the non-energy storage of circuit breaker, energy storage position switch disconnects the loop of combined floodgate latching relay HBJA and closing coil, be in energized condition when causing tripping operation latching relay TBJA and combined floodgate latching relay HBJA for a certain reason simultaneously, as jumped, combined floodgate exit relay BTJB, BTJC, CXJB contact arc discharge causes contact short circuit etc., successively by tripping operation latching relay excitation-coil motion-auxiliary contact TBJB, TBJC is closed-and anti-trip relay TBJVA is charged-and anti-trip relay normally-closed contact TBJVC disconnects, disconnect combined floodgate latching relay and closing coil loop, normally opened contact closes, anti-trip relay TBJVA coil is kept to be in energized condition, therefore the phenomenon that closing coil burns out can not be produced.
Can be found out by above-mentioned analysis, the utility model breaker operator loop ensure that the reliability of circuit breaker work, and economy simplifies the wiring of operation circuit.
Claims (10)
1. a medium voltage network breaker operator loop, it is characterized in that: comprise the positive and negative binding post for attended operation power supply, walk abreast between described positive and negative binding post and be provided with shutting-brake control branch road (3), tripping operation controlling brancher (7), co-bit operation branch road (4), jump bit manipulation branch road (6), co-bit monitors branch road (8), jump position and monitor branch road (1), co-bit input branch road (9), anti-jump protection branch road (2) and remote control operation branch road (5);
Described jumping position monitors that branch road (1) often opens auxiliary contact head end with all external positive binding post (+KM) of shutting-brake control branch road (3) and breaker energy storage, and breaker energy storage is often opened auxiliary contact time end and connected negative binding post (-KM) through breaker closing coil; Described co-bit monitors branch road (8) and tripping operation controlling brancher (7) all external positive binding post (+KM) and circuit breaker trip coil head end, and circuit breaker trip coil time end connects negative binding post (-KM);
Described jumping position monitors branch road (1), remote control operation branch road (5), co-bit monitors respectively by jumping position, branch road (8) and co-bit input branch road (9) monitor that branch road is opened into end (DIN1), remote control operation branch road is opened into end (DIN2), and co-bit monitors that branch road is opened to open into end (DIN3) and co-bit input branch road and is connected to central processing unit into end (DIN4).
2. medium voltage network breaker operator loop according to claim 1, it is characterized in that: described jumping position monitors that branch road (1) comprises the first optocoupler (U1) for isolating the two ends signal of telecommunication, two inputs of the first optocoupler (U1) connect positive binding post (+KM) respectively and often open auxiliary contact head end with breaker energy storage, and two outputs of the first optocoupler (U1) connect jumping position respectively and monitor that branch road is opened into end (DIN1) and ground wire.
3. medium voltage network breaker operator loop according to claim 1; it is characterized in that: described anti-jump protection branch road (2) comprises anti-trip relay (TBJVA); described shutting-brake control branch road (3) comprises the combined floodgate latching relay (HBJA) that head end is connected with the 3rd anti-jump auxiliary contact (TBJVC) of anti-trip relay (TBJVA), and auxiliary contact head end is often opened in time end connecting breaker energy storage of combined floodgate latching relay (HBJA).
4. medium voltage network breaker operator loop according to claim 3, it is characterized in that: described co-bit operation branch road (4) comprises closes rear relay coil (HHJA), and after closing, relay coil (HHJA) keeps auxiliary contact (HBJC) to connect shutting-brake control branch road (3) by the 3rd of combined floodgate latching relay (HBJA).
5. medium voltage network breaker operator loop according to claim 4; it is characterized in that: after described jumping bit manipulation branch road (6) comprises conjunction, second of relay coil (HHJA) often drives auxiliary contact (HHJB); second often opens external remote control operation branch road (5) of auxiliary contact (HHJB), and hand trip(ping) loop time end connects the hard pressing plate of trip protection (TZLP).
6. medium voltage network breaker operator loop according to claim 1, is characterized in that: described remote control operation branch road (5) comprises remote control closing relay and operates branch road by the remote control that the second optocoupler (U2) is connected with remote control closing relay to be opened into end (DIN2).
7. the medium voltage network breaker operator loop according to claim 1 or 6; it is characterized in that: described shutting-brake control branch road (3) the external reclosing protection hard pressing plate of switching (HZLP), the remote control closing relay of remote control operation branch road (5) and closing by hand snap switch link (SDHZ).
8. medium voltage network breaker operator loop according to claim 1, it is characterized in that: described tripping operation controlling brancher (7) comprises tripping operation latching relay (TBJA), described tripping operation latching relay (TBJA) connects positive binding post (+KM) by the second tripping operation auxiliary contact (TBJB), and tripping operation latching relay (TBJA) connects negative binding post (-KM) through circuit breaker trip coil.
9. medium voltage network breaker operator loop according to claim 1, it is characterized in that: described co-bit monitors that branch road (8) comprises the 3rd optocoupler (U3) for isolating the two ends signal of telecommunication, two inputs of the 3rd optocoupler (U3) connect positive binding post (+KM) and circuit breaker trip coil head end respectively, and two outputs of the 3rd optocoupler (U3) connect co-bit respectively and monitor that branch road is opened into end (DIN3) and ground wire.
10. medium voltage network breaker operator loop according to claim 1, it is characterized in that: described co-bit input branch road (9) comprises the 4th optocoupler (U4) for isolating the two ends signal of telecommunication, two inputs of the 4th optocoupler (U4) connect power supply respectively and after closing, the magnetic of relay coil (HHJA) remains closed contact (HHJD), and two outputs of the 4th optocoupler (U4) connect co-bit input branch road respectively and open into end (DIN4) and ground wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420801212.5U CN204290261U (en) | 2014-12-16 | 2014-12-16 | A kind of medium voltage network breaker operator loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420801212.5U CN204290261U (en) | 2014-12-16 | 2014-12-16 | A kind of medium voltage network breaker operator loop |
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| Publication Number | Publication Date |
|---|---|
| CN204290261U true CN204290261U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420801212.5U Expired - Fee Related CN204290261U (en) | 2014-12-16 | 2014-12-16 | A kind of medium voltage network breaker operator loop |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104505805A (en) * | 2014-12-16 | 2015-04-08 | 榆林学院 | Breaker operating circuit for medium voltage system |
| CN104821557A (en) * | 2015-04-23 | 2015-08-05 | 中国能源建设集团江苏省电力设计院有限公司 | Control loop of breaker operation box |
-
2014
- 2014-12-16 CN CN201420801212.5U patent/CN204290261U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104505805A (en) * | 2014-12-16 | 2015-04-08 | 榆林学院 | Breaker operating circuit for medium voltage system |
| CN104821557A (en) * | 2015-04-23 | 2015-08-05 | 中国能源建设集团江苏省电力设计院有限公司 | Control loop of breaker operation box |
| CN104821557B (en) * | 2015-04-23 | 2017-06-16 | 中国能源建设集团江苏省电力设计院有限公司 | A kind of control loop of breaker operation cabinet |
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