CN2836229Y - Automatic reclosing device of low voltage circuit breaker - Google Patents
Automatic reclosing device of low voltage circuit breaker Download PDFInfo
- Publication number
- CN2836229Y CN2836229Y CN 200520083144 CN200520083144U CN2836229Y CN 2836229 Y CN2836229 Y CN 2836229Y CN 200520083144 CN200520083144 CN 200520083144 CN 200520083144 U CN200520083144 U CN 200520083144U CN 2836229 Y CN2836229 Y CN 2836229Y
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- circuit breaker
- phase power
- normally
- digital display
- motor protector
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Abstract
The utility model relates to an automatic reclosing device of a low voltage breaker. After an air switch is serially connected to a three-phase power line, the three-phase power line is connected with a digital display motor protector. One end of normally open contacts of a DC disconnector on the digital display motor protector penetrates an intermediate relay and is connected with a zero line, one end of a group of normally closed contacts of the breaker is connected with the zero line, and the other end passes through a time relay and the normally closed contacts of the intermediate relay and is connected with a C-phase power supply. The C-phase power supply passes through the normally closed contacts of the intermediate relay and a stop button and is connected with one end of a parallel circuit composed of the normally open contacts of the breaker, a gate closing button and the normally open contacts of the time relay, and the other end of the parallel circuit is connected with the zero line. The utility model can effectively realize the task that when power supply lines malfunction, the breaker not only can automatically trips, but also can automatically close to transmit electricity after faults are cleared. The utility model has the characteristic of simple structure.
Description
Affiliated technical field
But the utility model relates in a kind of high tension distribution system the device of automatic reclosing behind the circuit breaker trip, especially a kind of low-voltage circuit breaker auto recloser.
Background technology
At present; extensively adopt circuit breaker to be without prejudice in the low-voltage distribution system of using in the society in order to the circuit in the protection electric power system; promptly when faults such as generation phase fault, power failure in short-term; circuit breaker will automatic trip; realizing the task of protection, this technical scheme is though have defencive function to supply line and equipment thereof; but after eliminating, fault need manual closing operation to send electricity, so have the defective that in time to send electricity and waste of manpower.
Summary of the invention
In order to overcome the defective of above-mentioned existence, task of the present utility model is to provide a kind of low-voltage circuit breaker auto recloser, this device is added in the low-voltage distribution system, when fault such as powers failure, phase fault takes place in the supply line in short-term, can not only make the low-voltage circuit breaker automatic trip, and low-voltage circuit breaker will send by automatic reclosing after the fault elimination.
In order to realize above-mentioned task; the technical scheme that the utility model is taked is: the A between low pressure 380V power supply and load; B; be connected in series three normally opened contacts of circuit breaker on the C three-phase power line respectively; A before these three normally opened contacts; B; A on the connecting line of C three-phase power line behind the serial connection air switch; B phase power line is connected with the power supply input wires terminal of digital display type motor protector respectively; one end of the normally opened contact of the direct current relay in the digital display type motor protector and B power supply mutually are connected; the other end is connected with zero line after by the control coil of auxiliary relay; one end of one group of normally-closed contact of circuit breaker is connected with zero line; its other end by the series circuit of forming by a normally-closed contact of the control coil of the time relay and auxiliary relay after and by behind the air switch with C mutually power line be connected; this C phase power line by the series circuit of forming by another normally-closed contact and the stop button of auxiliary relay after and by one group of normally opened contact of circuit breaker; one end of the parallel circuits that the normally opened contact of the switch knob and the time relay is formed is connected; the other end of this parallel circuits is connected with zero line after by the control coil of circuit breaker, three signal input parts of digital display type motor protector respectively be arranged on A; B; three current transformers on the C three-phase power line are connected.
It is the digital display type motor protector of JD-5S10 that described digital display type motor protector adopts model, and changes the normally-closed contact on the direct current relay wherein into normally opened contact.
According to technique scheme: the course of work of the present utility model is:
The normal combined floodgate course of work:
When normal combined floodgate, air switch at first closes, this moment, C phase power supply constituted the loop by the normally-closed contact of auxiliary relay, the control coil of the time relay and the normally-closed contact and the zero line of circuit breaker, make the time relay get electric work, the normally opened contact timing closing of the time relay, this moment, C phase power supply formed the loop through between normally-closed contact, circuit breaker and the zero line of the normally-closed contact of auxiliary relay, stop button, the time relay, thereby make circuit breaker get electric work, make its three normal closings of contact.Thereby realize the task of combined floodgate power supply.Simultaneously can also can realize the task of closing a floodgate by pressing switch knob.Also can press the task that opening button realizes making circuit breaker trip.
The fault trip process:
The power failure phase shortage takes place in supply line; overvoltage; overcurrent; during short trouble; A; B; electric current on the C three-phase power line will change; the digital display type motor protector is obtained the normally opened contact closure that makes the direct current relay in its digital display type motor protector behind the current signal of this variation by current transformer; this moment, B phase power supply formed the loop through the control coil of auxiliary relay between the zero line; thereby make auxiliary relay get electric work; the normally-closed contact of auxiliary relay disconnects; thereby cut off the operating current of circuit breaker; it is quit work; three normally opened contacts of circuit breaker become normally open from closure state, thereby realize making the task of circuit breaker automatic trip.
Reclosing process after the tripping operation:
After the fault in the supply line is eliminated; when sending a telegram here again after having a power failure; it is normal that electric current on A, B, the C three-phase power line recovers; normally opened contact on the digital display type motor protector recovers normally open by closure state; the auxiliary relay dead electricity quits work, and its normally-closed contact reverts to normally off by opening, the circuit breaker state of resuming work; its normally opened contact closure, thereby the task of realization automatic reclosing.
The beneficial effects of the utility model: owing to taked technique scheme, the beneficial effects of the utility model one are that this device is added in the low-voltage distribution system, can effectively realize when breaking down in the supply line, can not only making the circuit breaker automatic trip, and circuit breaker will send electric task by automatic reclosing after fault is eliminated; The 2nd, the utility model adapts to the low-voltage distribution system that aligns in use to be transformed, and also adapts to newly-built low-voltage distribution system; The 3rd, the utlity model has simple in structure, low cost of manufacture, be suitable for the characteristics that popularize.In sum, can effectively realize task of the present utility model.
Description of drawings
Below with reference to accompanying drawing the utility model is further specified.
Accompanying drawing has provided electric theory structure schematic diagram of the present utility model.
In the accompanying drawings; JD is the digital display type motor protector; JD1 is the rear board binding post of JD; KJ is the normally opened contact in the digital display type motor protector; KM is a circuit breaker; KM1 is the normally opened contact of circuit breaker, and DL is the normally-closed contact of circuit breaker, and DL1 is the normally opened contact of circuit breaker; KA is the control coil of auxiliary relay; KA1 and KA2 are the normally-closed contact of auxiliary relay KA, and KT is the control coil of the time relay, and KT1 is the normally opened contact of KT; C45 is an air switch; SB1 is a stop button, and SB2 is a switch knob, and LH is a current transformer.
Wherein JD adopts the JD-5S10 type digital display type motor protector that Cangnan, Zhejiang Province self-reacting device head factory is produced; it is the JZ7-44/220V auxiliary relay that KA adopts model; it is the JSS10-220V motor time relay that KT adopts model, and it is the circuit breaker of DW17-1600 that KM adopts model.
Embodiment
With reference to the accompanying drawings; A between low pressure 380V power supply and load; B; be connected in series three normally opened contact DL of circuit breaker KM on the C three-phase power line respectively; A before these three normally opened contact DL; B; be serially connected with the A behind the air switch C45 on the connecting line of C three-phase power line; B phase power line joins with the power supply input wires terminal of digital display type motor protector JD respectively; the end of the normally opened contact KJ of the direct current relay on the digital display type motor protector JD and B power supply mutually are connected; the other end is connected with zero line after by the control coil of auxiliary relay KA; the end of the normally-closed contact DL1 of circuit breaker KM is connected with zero line; its other end is by the control coil by time relay KT; behind the series circuit that the normally-closed contact KA1 of auxiliary relay KA and air switch C45 form with C mutually power line be connected; this C phase power line by the series circuit of forming by another normally-closed contact KA2 and the stop button SB1 of auxiliary relay KA after and by the normally opened contact KM1 of circuit breaker KM; one end of the parallel circuits that the normally opened contact KT1 of switch knob SB2 and time relay KT forms is connected; the other end of this parallel circuits is connected with zero line after by circuit breaker KM, three signal input parts of digital display type motor protector JD respectively be arranged on A; B; three current transformer LH on the C three-phase power line are connected.It is the digital display type motor protector of JD-5S10 that described digital display type motor protector adopts model, and changes the normally-closed contact on the direct current relay wherein into normally opened contact.
Claims (2)
1; a kind of low-voltage circuit breaker auto recloser; mainly by circuit breaker; the digital display type motor protector; auxiliary relay; the time relay; air switch is formed; it is characterized in that the A between low pressure 380V power supply and load; B; be connected in series three normally opened contact DL of circuit breaker KM on the C three-phase power line respectively; A before these three normally opened contact DL; B; the C three-phase power line is serially connected with the A behind the air switch; B phase power line joins with the power supply input wires terminal of digital display type motor protector JD respectively; the end of the normally opened contact KJ of the direct current relay among the digital display type motor protector JD and B power supply mutually are connected; the other end is connected with zero line after by the control coil of auxiliary relay KA; one end of one group of normally-closed contact of circuit breaker is connected with zero line; be connected behind the series circuit that its other end is formed by the normally-closed contact KA1 by the control coil of time relay KT and auxiliary relay KA and by the C phase power line behind the air switch C45; this C phase power line by the series circuit of forming by another normally-closed contact KA2 and the stop button SB1 of auxiliary relay KA after with one group of normally opened contact KM1 of circuit breaker KM; one end of the parallel circuits of opening contact KT1 composition of switch knob SB2 and time relay KT is connected; the other end of this parallel circuits is connected with zero line, three signal input parts of digital display type motor protector JD respectively be arranged on A; B; three current transformer LH on the C three-phase power line are connected.
2, low-voltage circuit breaker auto recloser according to claim 1; it is characterized in that it is the digital display type motor protector of JD-5S10 that described digital display type motor protector adopts model, and change the normally-closed contact on the direct current relay wherein into normally opened contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520083144 CN2836229Y (en) | 2005-05-11 | 2005-05-11 | Automatic reclosing device of low voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520083144 CN2836229Y (en) | 2005-05-11 | 2005-05-11 | Automatic reclosing device of low voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2836229Y true CN2836229Y (en) | 2006-11-08 |
Family
ID=37300879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520083144 Expired - Fee Related CN2836229Y (en) | 2005-05-11 | 2005-05-11 | Automatic reclosing device of low voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2836229Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101447661B (en) * | 2007-11-28 | 2011-01-19 | 上海精益电器厂有限公司 | Control method for automatic reclosing controller |
| CN102497016A (en) * | 2011-11-26 | 2012-06-13 | 河南省电力公司南阳供电公司 | Optimization method for 10kV line breaker closing return circuit |
| CN103531408A (en) * | 2013-10-28 | 2014-01-22 | 李小涛 | Automatic low-voltage circuit breaker closing device and automatic closing method by using device after no-voltage release |
| CN105934858A (en) * | 2013-12-04 | 2016-09-07 | 伊顿工业(荷兰)有限公司 | Automatic reclosing alternating current circuit breaker |
-
2005
- 2005-05-11 CN CN 200520083144 patent/CN2836229Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101447661B (en) * | 2007-11-28 | 2011-01-19 | 上海精益电器厂有限公司 | Control method for automatic reclosing controller |
| CN102497016A (en) * | 2011-11-26 | 2012-06-13 | 河南省电力公司南阳供电公司 | Optimization method for 10kV line breaker closing return circuit |
| CN102497016B (en) * | 2011-11-26 | 2016-08-03 | 国网河南省电力公司南阳供电公司 | The optimization method of 10kV line-breaker closing circuit |
| CN103531408A (en) * | 2013-10-28 | 2014-01-22 | 李小涛 | Automatic low-voltage circuit breaker closing device and automatic closing method by using device after no-voltage release |
| CN103531408B (en) * | 2013-10-28 | 2015-09-30 | 李小涛 | Low-voltage circuit breaker automatic switching-on device and the method for automatic closing after no-voltage trip thereof |
| CN105934858A (en) * | 2013-12-04 | 2016-09-07 | 伊顿工业(荷兰)有限公司 | Automatic reclosing alternating current circuit breaker |
| CN105934858B (en) * | 2013-12-04 | 2019-03-29 | 伊顿工业(荷兰)有限公司 | Automatic reclosing AC circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |