CN204857610U - Prevent maloperation control circuit based on two position relays - Google Patents
Prevent maloperation control circuit based on two position relays Download PDFInfo
- Publication number
- CN204857610U CN204857610U CN201520571104.8U CN201520571104U CN204857610U CN 204857610 U CN204857610 U CN 204857610U CN 201520571104 U CN201520571104 U CN 201520571104U CN 204857610 U CN204857610 U CN 204857610U
- Authority
- CN
- China
- Prior art keywords
- position relays
- trouble
- return circuit
- circuit
- coil
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model provides a prevent maloperation control circuit based on two position relays which characterized in that: hydraulic circuit divide into four bibliographic categories's branch: firstly, the trip protection contact concatenates on the coil of two position relays 1, having constituted tripping operation action return circuit, secondly, trouble lamp concatenates with the NO -contact of two position relays, has constituted the fault indication return circuit, thirdly, the coil 2 of involution button and two position relays concatenates, has constituted the involution return circuit, fourthly, the normally closed contact, the closing coils of circuit breaker of switching knob, two position relays concatenate, have constituted the shutting return circuit of closing a floodgate. The utility model has the advantages that: : 1. Based on the operating characteristic of two position relays, only need utilize two position relays just can accomplish fault indication, shutting, reset function, 2 take place to the trouble in feeder return circuit that to eliminate the condition indication obvious with the trouble, easily observation, 3 the combined floodgate return circuit that locks after the trouble takes place, prevent misuse, 4 must manual reset after the trouble is eliminated, ensured the safety of follow -up operation.
Description
Technical field
The utility model relates to power plant's distribution control field, is particularly useful for needing the control loop of faulty indication, locking and reset simultaneously.
Background technology
In power-plant operation, faults such as the feeder assembly of low pressure station service is often short-circuited, ground connection, overload thus cause trip protection.Operations staff again should close a floodgate after elimination fault under normal circumstances, but on-the-spot often generation operations staff false switching when fault is not eliminated, cause fault loop again charged.If traditional control loop has the functions such as faulty indication, locking, reset simultaneously, need several relay overlap joint of different nature, wiring is complicated, cost is higher, difficult arrangement.
Utility model content
It is simple, safe and reliable that the purpose of this utility model is to provide a kind of structure, has the control loop of faulty indication, locking, reset function simultaneously.
For achieving the above object, the utility model provides a kind of anti-misoperation control loop based on two-position relay, it is characterized in that: loop structure is divided into four parts: one is that trip protection contact is serially connected on a coil of two-position relay, constitutes trip operation loop; Two be malfunction indicator lamp and two-position relay normal opened contact serial connection, constitute faulty indication loop; Three be involution button and two-position relay two coil serial connection, constitute involution loop; Four is switch knob, the normally closed contact of two-position relay, the closing coil serial connection of circuit breaker, constitutes closing locking circuit.
Advantage of the present utility model is as follows: 1. based on the operating characteristics of two-position relay, only needs to utilize a two-position relay just can complete faulty indication, locking, reset function; 2. the fault of feeder assembly is occurred and the instruction of Failure elimination state obviously, be easy to observation; 3. there is rear locking closing circuit in fault, prevents misoperation; 4. palpus manual reset after Failure elimination, ensure that the safety of subsequent operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
In figure: the various trip protection contact of 1-; 2-two-position relay (coil 1); 3-two-position relay (coil 2); 4-two-position relay (normal opened contact); 5-two-position relay (normally closed contact); 6-integral type malfunction indicator lamp and involution button; 7-breaker closing coil.
Embodiment
With reference to Fig. 1, loop structure of the present utility model is divided into four parts: (1) trip protection contact is serially connected on the coil 1 of two-position relay, constitutes trip operation loop; (2) the normal opened contact serial connection of malfunction indicator lamp and two-position relay, constitutes faulty indication loop; (3) coil 2 of involution button and two-position relay is connected in series, and constitutes involution loop; (4) normally closed contact of switch knob, two-position relay, the closing coil serial connection of circuit breaker, constitute closing locking circuit.
Operating principle of the present utility model is as follows: after feeder assembly is because of fault trip, two-position relay coil 1 is touched in the contact (comprise the protection of breaker body, join zero-sequenceprotection, thermal relay protection etc. outward) of trip protection makes malfunction indicator lamp light, the closing circuit of locking simultaneously; Pending fault manually presses involution button (indicator light and button are integrated pattern) after eliminating, touching two-position relay coil 2 makes indicator light extinguish, and unlocking closing circuit, operating personnel can normal running, doing so avoids the generation of fault loop false switching situation.
In concrete engineering, as long as by the control loop in switch cubicle, carry out overlapping according to above-mentioned principle.Because foreign project pays much attention to faulty indication and closing locking circuit, and the control loop that practical function is various in narrow and small drawer-type switch cabinet is very difficult, so this loop has using value widely.
Claims (1)
1. based on an anti-misoperation control loop for two-position relay, it is characterized in that: loop structure is divided into four parts: one is that trip protection contact is serially connected on a coil of two-position relay, constitutes trip operation loop; Two be malfunction indicator lamp and two-position relay normal opened contact serial connection, constitute faulty indication loop; Three be involution button and two-position relay two coil serial connection, constitute involution loop; Four is switch knob, the normally closed contact of two-position relay, the closing coil serial connection of circuit breaker, constitutes closing locking circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520571104.8U CN204857610U (en) | 2015-08-03 | 2015-08-03 | Prevent maloperation control circuit based on two position relays |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520571104.8U CN204857610U (en) | 2015-08-03 | 2015-08-03 | Prevent maloperation control circuit based on two position relays |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204857610U true CN204857610U (en) | 2015-12-09 |
Family
ID=54748137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520571104.8U Active CN204857610U (en) | 2015-08-03 | 2015-08-03 | Prevent maloperation control circuit based on two position relays |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204857610U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109491295A (en) * | 2018-12-05 | 2019-03-19 | 岭澳核电有限公司 | Control system |
| CN110289684A (en) * | 2019-06-12 | 2019-09-27 | 国网河南省电力公司电力科学研究院 | A kind of microcomputer device is restarted automatically control device and method |
-
2015
- 2015-08-03 CN CN201520571104.8U patent/CN204857610U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109491295A (en) * | 2018-12-05 | 2019-03-19 | 岭澳核电有限公司 | Control system |
| CN109491295B (en) * | 2018-12-05 | 2020-06-16 | 岭澳核电有限公司 | Control system |
| CN110289684A (en) * | 2019-06-12 | 2019-09-27 | 国网河南省电力公司电力科学研究院 | A kind of microcomputer device is restarted automatically control device and method |
| CN110289684B (en) * | 2019-06-12 | 2022-04-08 | 国网河南省电力公司电力科学研究院 | Automatic restart control equipment and method for microcomputer device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204857610U (en) | Prevent maloperation control circuit based on two position relays | |
| CN101872956B (en) | Leakage current detection protection circuit | |
| CN101872957B (en) | Leakage current detection protection circuit | |
| CN204230110U (en) | With the control circuit of high-voltage circuit breaker of locking link | |
| CN201656264U (en) | Switch-cabinet grounding knife-switch location lighting indicating device | |
| CN103647306A (en) | Automatic quasi-synchronization closing loop for preventing generator nonsynchronous closing | |
| CN103311921B (en) | A kind of power supply entering line switch and bus connection switch interlock connection circuit | |
| CN203014342U (en) | Emergency stop circuit of power distribution system of ship | |
| CN204156497U (en) | A kind of intelligent breaker auto recloser | |
| CN104730957A (en) | Direct recognizing system for intelligent substation transmission line differential protection on/off states | |
| CN201422007Y (en) | Electric leakage inspecting protection circuit | |
| CN204303227U (en) | Body sense real training formula Intelligent electric leakage protection system | |
| CN109066604B (en) | Generator low-voltage protection system of million-kilowatt nuclear power station | |
| CN204347209U (en) | The artificial leakage tripping test unit in a low tension switch distant place, colliery | |
| CN103532092A (en) | Novel electric leakage protector | |
| CN204271746U (en) | Automatic switching device of standby power supply | |
| CN208797367U (en) | False switching control system after plastic housing failure is prevented in the drawer of low-tension switch cabinet | |
| CN201422008Y (en) | Electric leakage inspecting protection circuit | |
| CN206158915U (en) | A lose electronic type no. 3 of doing and select two guard signal circuit for protecting hydraulic generator | |
| CN104362578B (en) | Can reclosing RCCB | |
| CN204595083U (en) | Relay-set alternating voltage monitoring arrangement | |
| CN203387199U (en) | Generator synchronization grid connected automatic apparatus | |
| CN204117993U (en) | Electric protective device | |
| CN204496194U (en) | The Direct Recognition system of state of moving back is thrown in the differential protection of intelligent substation transmission line of electricity | |
| CN204145062U (en) | Full high pressure manual frequency conversion bypass cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |