CN104090232A - Circuit breaker short-circuit current test table - Google Patents
Circuit breaker short-circuit current test table Download PDFInfo
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- CN104090232A CN104090232A CN201410316950.5A CN201410316950A CN104090232A CN 104090232 A CN104090232 A CN 104090232A CN 201410316950 A CN201410316950 A CN 201410316950A CN 104090232 A CN104090232 A CN 104090232A
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- copper bar
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- copper bars
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Abstract
The invention relates to a circuit breaker short-circuit current test table. The circuit breaker short-circuit current test table comprises a computer, a large-current rise transformer and terminals connected with the wire inlet end and the wire outlet end of a tested circuit breaker. The circuit breaker short-circuit current test table further comprises a multi-position coordinated pneumatic contactor device. The multi-position coordinated pneumatic contactor device comprises a bottom plate for assembly, seven copper bars, a large air cylinder plate, a small air cylinder plate, eight air cylinders, eight electromagnetic valves and eight relays. The seven copper bars are fixedly connected to the bottom plate, and the eight air cylinders are fixedly connected to the large air cylinder plate and the small air cylinder plate. The large air cylinder plate and the small air cylinder plate stride across the copper bars through supporting pieces and are fixedly connected to the bottom plate. Each air cylinder is controlled by one electromagnetic valve to move, a signal circuit of each electromagnetic valve is connected to one relay, and each relay circuit is connected to the computer. According to the circuit breaker short-circuit current test table, switching-on and switching-off of the circuits can be achieved through multi-position coordinated actions via the air cylinders and moving contacts, the copper bars serve as charging circuits and contactor parts, the number and the length of the copper bars are greatly reduced, and the occupied space is greatly reduced; the thought and the structure are novel, and cost is greatly reduced.
Description
Technical field
The invention belongs to a kind of low-voltage electrical apparatus, particularly relate to a kind of circuit breaker short circuit current testing platform.
Background technology
The detection check of breaker of plastic casing need to detect a phase in its three-phase circuit, b phase and c line electric current separately and ab is alternate, bc is alternate, the alternate three-phase current separately of ca mutually.Breaker of plastic casing wink, moving verification testing table generally consisted of elements such as high-power electric pressure regulator, rising current transformer, contactor, relay, signal lamps.This type of current testing table, be difficult to realize automatically and detect, the contactor of its use is as electronic control component, adopt galvanomagnetic effect principle, often on the branch road of certain in whole circuit, while getting large electric current, need large-scale large contactor or the stack of several probe of contactor, contactor own vol is huge; The round copper bar quantity of its access is many in addition, and copper bar sectional area at least will reach 1000mm
2, so the lengthy and tedious complexity of circuit, takes up room huge, in limited testing table casing, cannot arrange; And the model that contactor is selected also needs to become according to different electric current and voltages, type selection calculation work has just occupied a large amount of time; A large amount of uses of copper bar have increased the cost of verification testing table greatly in addition.
Summary of the invention
The present invention provides a kind of circuit breaker short circuit current testing platform that can produce large electric current and more easily control large current switching by mechanical action for solving the technical matters existing in known technology.
The technical scheme that the present invention takes for the technical matters existing in solution known technology is: it includes computing machine, large electric current rising current transformer and is connected the terminal of tested isolating switch turnover line end, also includes a multiposition and coordinates pneumatic contactor device; Described multiposition is coordinated pneumatic contactor device and is included base plate, 7 copper bars, air cylinder boards and 8 cylinders, 8 solenoid valves, 8 relays for assembling; 7 described copper bars are fixed on described base plate each other isolator, and 8 described cylinders are fixed on described air cylinder board, the overhang insulation of the cylinder rod of each described cylinder be fixed with moving contact; Described air cylinder board by support member across described copper bar top and be fixed on described base plate; The arrangement of 7 described copper bars is according to can realize a phase, b phase and the c that detect in breaker of plastic casing three-phase circuit line electric current separately and ab is alternate, bc is alternate, the circuit needs of the object of the alternate three-phase current separately of ca mutually for meeting, to keep each other pitch arrangement on base plate; The deployment scenarios of described 7 copper bars that are connected on base plate is: the right-hand member that is wherein connected in the 1st, 2 copper bars of described base plate both end sides is connected with a copper bar in the secondary side copper bar of described large electric current rising current transformer respectively; Each is connected with one of them terminal that described tested isolating switch passes in and out the two-phase in line end a, b, c phase terminal up and down respectively in one end of other the 3rd, 4,5,6 copper bars in 7 described copper bars; The terminal that described tested isolating switch passes in and out the phase not being connected of each remainder in line end terminal is up and down connected with the left end of the 7th copper bar in described 7 copper bars and described the 2nd copper bar respectively; Gap between one end that the middle part of described the 3rd copper bar and described the 6th copper bar are not connected with described tested isolating switch turnover line end terminal is for making the described moving contact on the cylinder rod of the 1st cylinder in 8 described cylinders be communicated with in action time institute's crimping, and the gap between one end that described the 3rd copper bar is not connected with described tested isolating switch turnover line end terminal and the middle part of described the 5th copper bar is for making described moving contact on the cylinder rod of the 2nd cylinder in 8 described cylinders be communicated with moving time institute's crimping; Gap between one end that one end that described the 4th copper bar is not connected with described tested isolating switch turnover line end terminal is not connected with described tested isolating switch turnover line end terminal with described the 5th copper bar is for making described moving contact on the cylinder rod of the 3rd cylinder in 8 described cylinders in action time institute's crimping connection; The gap that the left end of described the 1st copper bar is connected between one end and described the 7th copper bar with described the 3rd, 4 copper bars and described tested isolating switch turnover line end terminal is respectively for making the described moving contact on the cylinder rod of the 4th, 5,6 cylinders in 8 described cylinders be communicated with in action time institute's crimping; The gap that the left end of described the 2nd copper bar and described the 5th, 6 copper bars and described tested isolating switch turnover line end terminal are connected between one end is for making the described moving contact on the cylinder rod of the 7th, 8 cylinders in 8 described cylinders be communicated with in action time institute's crimping; Cylinder described in each is moved by the solenoid control described in respectively, and the signal line of the solenoid valve described in each is received on the relay described in, and the relay circuit described in each is received on described computing machine.
Advantage and good effect that the present invention has are: the present invention need to determine the quantity of copper bar according to circuit diagram, length, shape, position, adopt a plurality of cylinders and moving contact (moving contact and cylinder rod are connected), (on a position, moving contact compresses and lifts with stretching of cylinder rod on copper bar in multiposition coordination, to control the logical and disconnected of this location circuit) to realize connecting and disconnecting of the circuit, can automatically detect a phase in breaker of plastic casing three-phase circuit, b phase is alternate with c phase line electric current and ab separately, bc is alternate, the alternate three-phase current separately of ca, and can in these several detections, automatically switch.The action of pneumatic element is determined by electric signal, has replaced electromagnetic contactor in function, moving contact that each cylinder is corresponding and it across two copper bars form a pneumatic contactor; Copper bar had both served as energising circuit and had also served as contactor parts, and quantity and the length of copper bar reduce greatly, and the space taking dwindles greatly; Thought general layout is novel, and principle of work is easily understood, and without type selecting, only need determine according to size of current and the sectional area size of copper bar greatly reduce cost; So, this type of more current test platform structure of the present invention has simplified 80%.The pneumatic contactor that multiposition is coordinated is like this applicable to the work of switching on for a long time of circuit that electric current is greater than 1000A, and break-make speed is also very fast simultaneously.
Accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present invention;
Fig. 2 is copper bar wiring diagram of the present invention;
Fig. 3 is the structural representation between cylinder of the present invention, moving contact and copper bar;
Fig. 4 is the partial enlarged view in the broken circle in Fig. 3;
Fig. 5 is the mounting structure schematic diagram of the sleeve pipe of supporting and location size air cylinder board.
Embodiment
For further understanding content of the present invention, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
As shown in Fig. 1,2,3,5, be fixed on eight cylinders 1 on big or small air cylinder board 2,8, wherein on little air cylinder board 2, there are three, on large air cylinder board 8, there are five; Size air cylinder board 2,8 is fixed on base plate 4 by 10 supporting and location sleeve pipes 5, wherein 4 for 2,6 of little air cylinder boards for large air cylinder board 8; Size air cylinder board 2,8 is in being fixed on the top of 7 copper bars 3,6,7,9,10,19,22 on base plate 4.Socket head cap screw 11 is through the counterbore on base plate 4, and after the mounting hole on supporting and location sleeve pipe 5 and 2 four angles of little air cylinder board, cover top nut 12 is by the fastening location of little air cylinder board 2 on earth on plate 4.The identical of the large air cylinder board 8 of cylinder 1 and the mode that is fixedly connected with of base plate 4 and little air cylinder board 2 is fixedly housed.
As shown in Figure 2, the right-hand member of copper bar 3,10 is received respectively on the secondary copper bar of rising current transformer; Six copper sheets are flexible coupling and from the back side of base plate 4, pass square hole 21 respectively, respectively with bolt they are fixed on the position of copper bar 6,7,9,10,19,22 near square hole 21 (be flexible coupling and copper bar on hole accomplish fluently), the back side at base plate 4, be flexible coupling according to upper and lower a, b, the consistent principle of c three-phase electricity is connected on respectively for receiving the terminal of the upper and lower opening of surveying breaker of plastic casing.
As shown in Figure 2,3, 4, cylinder 1 is fixed on little air cylinder board 2 by bolt 13; Epoxy plate 15 and cylinder rod 14 sunk screw shown in is by a dotted line connected fastening; Two sunk screws 16 are bottom-up through moving contact 17 and spring 18, screw in the screw thread of epoxy plate 15.Each is connected mutually with c, b in a, b phase and tested isolating switch end of incoming cables a, b, c phase terminal in tested breaker outgoing line end a, b, c phase terminal respectively for copper bar 6,7 and one end of 9,19; Gap between one end that the middle part of copper bar 6 is not connected with tested isolating switch end of incoming cables b phase terminal with copper bar 19 is for making the moving contact on the cylinder rod of the 1st cylinder in 8 cylinders be communicated with in action time institute's crimping; Gap between one end that copper bar 6 is not connected with tested breaker outgoing line end a phase terminal and the middle part of copper bar 9 is for making the moving contact on the cylinder rod of the 2nd cylinder in 8 cylinders be communicated with in action time institute's crimping; Gap between one end that one end that copper bar 7 is not connected mutually with tested breaker outgoing line end terminal b is not connected with tested isolating switch end of incoming cables c phase terminal with copper bar 9 is for making the moving contact on the cylinder rod of the 3rd cylinder in 8 cylinders be communicated with in action time institute's crimping; The gap that the left end of copper bar 3 is connected between one end with tested breaker outgoing line end a, b phase terminal with copper bar 6,7 is respectively for making the moving contact on the cylinder rod of the 4th, 5 cylinders in 8 cylinders be communicated with in action time institute's crimping; The gap that the left end of copper bar 10 is connected between one end with tested isolating switch end of incoming cables b, c phase terminal with copper bar 19,9 is for making the moving contact on the cylinder rod of the 7th, 8 cylinders in 8 cylinders be communicated with in action time institute's crimping; The gap of copper bar 22 and 3 of copper bars is for making the moving contact on the cylinder rod of the 6th cylinder in 8 cylinders be communicated with in action time institute's crimping.
Each cylinder 1 is moved by a solenoid control respectively, and the signal wire of each solenoid valve is received respectively on a relay, and each relay circuit is received on computing machine.
Claims (1)
1. a circuit breaker short circuit current testing platform, it includes computing machine, large electric current rising current transformer and is connected the terminal of tested isolating switch turnover line end, it is characterized in that: also include a multiposition and coordinate pneumatic contactor device; Described multiposition is coordinated pneumatic contactor device and is included base plate, 7 copper bars, air cylinder boards and 8 cylinders, 8 solenoid valves, 8 relays for assembling; 7 described copper bars are fixed on described base plate each other isolator, and 8 described cylinders are fixed on described air cylinder board, the overhang insulation of the cylinder rod of each described cylinder be fixed with moving contact; Described air cylinder board by support member across described copper bar top and be fixed on described base plate; The arrangement of 7 described copper bars is according to can realize a phase, b phase and the c that detect in breaker of plastic casing three-phase circuit line electric current separately and ab is alternate, bc is alternate, the circuit needs of the object of the alternate three-phase current separately of ca mutually for meeting, to keep each other pitch arrangement on base plate; The deployment scenarios of described 7 copper bars that are connected on base plate is: the right-hand member that is wherein connected in the 1st, 2 copper bars of described base plate both end sides is connected with a copper bar in the secondary side copper bar of described large electric current rising current transformer respectively; Each is connected with one of them terminal that described tested isolating switch passes in and out the two-phase in line end a, b, c phase terminal up and down respectively in one end of other the 3rd, 4,5,6 copper bars in 7 described copper bars; The terminal that described tested isolating switch passes in and out the phase not being connected of each remainder in line end terminal is up and down connected with the left end of the 7th copper bar in described 7 copper bars and described the 2nd copper bar respectively; Gap between one end that the middle part of described the 3rd copper bar and described the 6th copper bar are not connected with described tested isolating switch turnover line end terminal is for making the described moving contact on the cylinder rod of the 1st cylinder in 8 described cylinders be communicated with in action time institute's crimping, and the gap between one end that described the 3rd copper bar is not connected with described tested isolating switch turnover line end terminal and the middle part of described the 5th copper bar is for making described moving contact on the cylinder rod of the 2nd cylinder in 8 described cylinders be communicated with moving time institute's crimping; Gap between one end that one end that described the 4th copper bar is not connected with described tested isolating switch turnover line end terminal is not connected with described tested isolating switch turnover line end terminal with described the 5th copper bar is for making described moving contact on the cylinder rod of the 3rd cylinder in 8 described cylinders in action time institute's crimping connection; The gap that the left end of described the 1st copper bar is connected between one end and described the 7th copper bar with described the 3rd, 4 copper bars and described tested isolating switch turnover line end terminal is respectively for making the described moving contact on the cylinder rod of the 4th, 5,6 cylinders in 8 described cylinders be communicated with in action time institute's crimping; The gap that the left end of described the 2nd copper bar and described the 5th, 6 copper bars and described tested isolating switch turnover line end terminal are connected between one end is for making the described moving contact on the cylinder rod of the 7th, 8 cylinders in 8 described cylinders be communicated with in action time institute's crimping; Cylinder described in each is moved by the solenoid control described in respectively, and the signal line of the solenoid valve described in each is received on the relay described in, and the relay circuit described in each is received on described computing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410316950.5A CN104090232B (en) | 2014-07-04 | 2014-07-04 | Circuit breaker short-circuit current test table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410316950.5A CN104090232B (en) | 2014-07-04 | 2014-07-04 | Circuit breaker short-circuit current test table |
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| Publication Number | Publication Date |
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| CN104090232A true CN104090232A (en) | 2014-10-08 |
| CN104090232B CN104090232B (en) | 2017-01-11 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04363677A (en) * | 1991-04-03 | 1992-12-16 | Mitsubishi Electric Corp | Synthetic test circuit for breaker |
| CN201259527Y (en) * | 2008-08-11 | 2009-06-17 | 天津市百利电气有限公司 | Current overload characteristic detection device for circuit breaker |
| CN201425595Y (en) * | 2009-05-25 | 2010-03-17 | 李永高 | Programme-controlled clamping device for molded case circuit breaker |
| CN202748451U (en) * | 2012-03-12 | 2013-02-20 | 李永高 | Miniature circuit breaker integrated test stand |
| CN203178439U (en) * | 2013-04-01 | 2013-09-04 | 常州世博电气有限公司 | Breaker experiment bench |
| CN203981843U (en) * | 2014-07-04 | 2014-12-03 | 天津市百利电气有限公司 | The moving verification testing table of wink of breaker of plastic casing |
-
2014
- 2014-07-04 CN CN201410316950.5A patent/CN104090232B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04363677A (en) * | 1991-04-03 | 1992-12-16 | Mitsubishi Electric Corp | Synthetic test circuit for breaker |
| CN201259527Y (en) * | 2008-08-11 | 2009-06-17 | 天津市百利电气有限公司 | Current overload characteristic detection device for circuit breaker |
| CN201425595Y (en) * | 2009-05-25 | 2010-03-17 | 李永高 | Programme-controlled clamping device for molded case circuit breaker |
| CN202748451U (en) * | 2012-03-12 | 2013-02-20 | 李永高 | Miniature circuit breaker integrated test stand |
| CN203178439U (en) * | 2013-04-01 | 2013-09-04 | 常州世博电气有限公司 | Breaker experiment bench |
| CN203981843U (en) * | 2014-07-04 | 2014-12-03 | 天津市百利电气有限公司 | The moving verification testing table of wink of breaker of plastic casing |
Non-Patent Citations (1)
| Title |
|---|
| 宋秀荣: "适用于多种智能型断路器特性检测试验台", 《低压电器》 * |
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| CN104090232B (en) | 2017-01-11 |
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