CN102841309B - Test device for circuit breaker - Google Patents
Test device for circuit breaker Download PDFInfo
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- CN102841309B CN102841309B CN201110167472.2A CN201110167472A CN102841309B CN 102841309 B CN102841309 B CN 102841309B CN 201110167472 A CN201110167472 A CN 201110167472A CN 102841309 B CN102841309 B CN 102841309B
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Abstract
The invention discloses a test device for a circuit breaker. The test device is characterized in that the test device comprises a case, a control circuit and a PLC (Programmable Logic Controller), wherein the control circuit and the PLC are arranged in the case; the PLC is connected with the control circuit; the control circuit comprises a power supply transformer, a winding control device, a current monitoring device, load impedance and a circuit protecting device; the circuit protecting device is arranged at the primary terminal of the power supply transformer; and the winding control device, the current monitoring device and the load impedance are arranged at the secondary terminal of the power supply transformer.
Description
Technical field
The present invention relates to a kind of electrical test equipment, be specifically related to a kind of circuit breaker testing device.
Background technology
Along with the raising of daily life electrifing degree and the development of urban construction; adopt high performance miniature circuit breaker as the overload of the electric wiring in house and resemble construction thing and device and distribution terminal circuit and device and short-circuit protection more and more universal; and isolating switch should meet national standard; meet the testing requirements that standard manufactures a product, meet testing requirements in 28 days.
Need to provide a kind of circuit breaker testing device for this reason, this device meets GB 10963.1-2005 electric accessories family expenses and similar site's circuit-breakers for over-current protection Part I: the isolating switch for exchanging " test request that manufactures a product of standard, testing requirementss in 28 days of isolating switch can be met, test in 28 days is carried out to isolating switch, rated current is passed to and the obstructed electric current of 3h forms under the open-circuit voltage of each cycle by 21h at least 30V, in the end one flow through electric current during terminate after, by the test current rising to 1.45 times of current stabilization in 5s, the record trip action time.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide that a kind of loss is little, thermal value is low, efficiency is high, simple to operate, there is complete control and measuring ability, ensure the accuracy of test result and the circuit breaker testing device of repeatability simultaneously.
For achieving the above object, technical scheme of the present invention is as follows: a kind of circuit breaker testing device, comprise cabinet, control circuit and PLC, described control circuit and described PLC are arranged in described cabinet, described PLC is connected with described control circuit, described control circuit comprises power transformer, winding control device, current monitor, loaded impedance and circuit protection device, described circuit protection device is arranged on the primary side of described power transformer, described winding control device, current monitor and loaded impedance are arranged on the out secondary of described power transformer.
Preferably, described winding control device is two A.C. contactors, and described two A.C. contactors interlocking connects.
Preferably, described current monitor comprises current transformer and reometer, and described reometer is digital ammeter or mechanical type reometer.
Preferably, described loaded impedance is adjustable resistance.
Preferably, also comprise parameter input device, described parameter input device is connected with described PLC.
Preferably, described parameter input device comprises touch screen and current sampling device.
Preferably, also comprise warning device, described warning device is connected with described PLC.
Preferably, described warning device is acoustic alarm device and/or light warning device.
Preferably, described cabinet is provided with radiator fan.
Preferably, be also provided with remote control, described remote control is connected with described PLC.
Adopt the beneficial effect of the technical program to be: loss is little, thermal value is low, efficiency is high, simple to operate, there is complete control and measuring ability, ensure accuracy and the repeatability of test result simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in embodiment of the present invention technology, be briefly described to the accompanying drawing used required in the description of embodiment technology below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structured flowchart of the present invention.
Fig. 2 is electrical schematic diagram of the present invention.
Fig. 3 is control circuit figure of the present invention.
Numeral and the corresponding component title represented by letter in figure:
QF. switch disconnector TM. power transformer KM1. A.C. contactor
KM2. A.C. contactor TA. current transformer A. reometer R. loaded impedance.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1:
As shown in Figure 1, control circuit, PLC, parameter input device and warning device are arranged in cabinet, control circuit, parameter input device are connected with PLC respectively with warning device, parameter input device comprises man-machine interface and current sampling device, man-machine interface is touch screen, and warning device is acoustic alarm device and light warning device.Cabinet is also provided with radiator fan, and when the temperature in cabinet reaches 45 DEG C, radiator fan starts automatically, and when the temperature in cabinet is lower than 45 DEG C, radiator fan stops automatically.
Shown in Fig. 3; control circuit comprises power transformer TM, winding control device, current monitor, loaded impedance R and circuit protection device; circuit protection device is arranged on the primary side of power transformer TM, and winding control device, current monitor and loaded impedance R arrange the out secondary of power transformer TM.Winding control device is two A.C. contactor KM1 and KM2, and A.C. contactor KM1 is connected with A.C. contactor KM2 interlocking.Current monitor comprises current transformer TA and digital current Table A.Loaded impedance R is adjustable resistance.Power transformer TM primary side is connected with the power supply of AC380V; power transformer TM out secondary is wanted to be connected with test product, is provided with apparatus for protecting power supply at power transformer TM primary side, and apparatus for protecting power supply is switch disconnector QF; protecting control circuit, plays overload protective function.
The power supply of AC380V exports secondary voltage by power transformer TM, export the voltage for 32V and 1.45 × 32V, A.C. contactor KM1 and KM2 of interlocking connection is provided with at the out secondary of power transformer TM, under KM1 and KM2 interlocked is used, it is the conversion that 32V and 1.45 × 32V realizes two kinds of operating voltage that power transformer TM level is exported; Be provided with loaded impedance R at the out secondary of power transformer TM simultaneously, by the adjustment resistance value of the loaded impedance R for adjustable resistance, control the output current of power transformer TM out secondary, working current is effectively controlled; Be provided with current transformer TA and digital current Table A at the out secondary of power transformer TM, the secondary output current of power transformer TM is monitored, according to setting value, from motion tracking, automatic steady current, automatically can detect, automatic record.When the change in impedance value of loaded impedance R causes working current to change, can effective monitoring to the size of working current.In the present embodiment, loaded impedance R is the adjustable resistance of resistance value 0.251-64 Ω; Current transformer TA is the current transformer of 0.2 grade; Digital current Table A is 0.5 grade and obtains digital ammeter; Switch disconnector QF is 63A miniature circuit breaker D type, and working current is 0.5-125A and 1.45 × (0.5-125) A.
Adopt PLC, reliability is high, and antijamming capability is strong, and volume is little, energy consumption is low, has digital quantity logic control, and motion control, closed loop procedure control, data processing, the functions such as communication networking, complete conduction time, test current data acquisition, display and control; Adopt touch screen, full Chinese interface, arranges succinct, easy to operate, provides abundant warning and diagnostic function.
As shown in Figure 2, according to electrical schematic diagram, principle of work is: in process of the test, test product isolating switch is in closure state, circuit breaker testing device by by each cycle be 21h 32V open-circuit voltage under pass to tests in 28 days of rated current and the obstructed electric current of 3h, test product isolating switch is carried out to the long run test of 28 days.Rated current and the obstructed electric current of 3h is passed under open-circuit voltage by the 32V of PLC control 21h.In the end one flow through electric current during terminate after, by the test current rising to 1.45 times of current stabilization in 5s, record the trip action time.
In process of the test, if test product is threaded off, device can record the trip action time automatically, and breaking circuit work, acoustic alarm device and light warning device are reported to the police, until stop alarm after closing test unit.
After in the end one-period terminates, winding control device works, 1.45 times of test currents are risen to by current stabilization in 5s, dropout timing starts timing, test product isolating switch is threaded off within the time of agreement, and device records drop-away time automatically, and breaking circuit work, acoustic alarm device and light warning device are reported to the police simultaneously, until stop alarm after closing test unit; If test product isolating switch is not threaded off within the time of agreement, arrive the time of agreement, acoustic alarm device and light warning device are reported to the police, if do not close test unit, after 60s, breaking circuit exports, and acoustic alarm device and light warning device continue to report to the police, until stop alarm after closing test unit.
Power transformer TM secondary side current is more than 190A, and stop after test unit 5s exporting, acoustic alarm device and light warning device continue to report to the police, until stop alarm after closing test unit.
Test unit under halted state, can only carry out optimum configurations, and startup or halted state can not carry out optimum configurations.
Embodiment 2:
All the other are identical with embodiment 1, and difference is, reometer is mechanical type reometer.
Embodiment 3:
All the other are identical with embodiment 1, and difference is, circuit breaker testing device is also provided with remote control, use window-operating software, can carry out remote control and remote measurement by network to device by computing machine.
Adopt the beneficial effect of the technical program to be: loss is little, thermal value is low, efficiency is high, simple to operate, there is complete control and measuring ability, ensure accuracy and the repeatability of test result simultaneously.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. a circuit breaker testing device, comprise cabinet, control circuit and PLC, described control circuit and described PLC are arranged in described cabinet, described PLC is connected with described control circuit, it is characterized in that, described control circuit comprises power transformer, winding control device, current monitor, loaded impedance and circuit protection device, described circuit protection device is arranged on the primary side of described power transformer, and described winding control device, current monitor and loaded impedance are arranged on the out secondary of described power transformer; Described winding control device is two A.C. contactors, and described two A.C. contactors interlocking connects; Described loaded impedance is adjustable resistance; Rated current and the obstructed electric current of 3h is passed under open-circuit voltage by the 32V of PLC control 21h; In the end one flow through electric current during terminate after, in 5s PLC again control circuit by the test current rising to 1.45 times of current stabilization, record the trip action time; Also comprise parameter input device, described parameter input device is connected with described PLC; Described parameter input device comprises touch screen and current sampling device.
2. a kind of circuit breaker testing device according to claim 1, is characterized in that, described current monitor comprises current transformer and reometer, and described reometer is digital ammeter or mechanical type reometer.
3. a kind of circuit breaker testing device according to claim 1, is characterized in that, also comprise warning device, and described warning device is connected with described PLC.
4. a kind of circuit breaker testing device according to claim 3, is characterized in that, described warning device is acoustic alarm device and/or light warning device.
5. a kind of circuit breaker testing device according to claim 1, is characterized in that, described cabinet is provided with radiator fan.
6. a kind of circuit breaker testing device according to claim 1 to 5 any one, is characterized in that, be also provided with remote control, described remote control is connected with described PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110167472.2A CN102841309B (en) | 2011-06-21 | 2011-06-21 | Test device for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110167472.2A CN102841309B (en) | 2011-06-21 | 2011-06-21 | Test device for circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102841309A CN102841309A (en) | 2012-12-26 |
| CN102841309B true CN102841309B (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110167472.2A Active CN102841309B (en) | 2011-06-21 | 2011-06-21 | Test device for circuit breaker |
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| CN (1) | CN102841309B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502765B (en) * | 2014-12-24 | 2018-04-20 | 格力电器（合肥）有限公司 | A kind of power transformer secondary short circuited experimental rig |
| CN106290446B (en) * | 2015-05-29 | 2019-03-08 | 国网智能电网研究院 | A kind of controllable direct-current arc generating device based on constant-current source |
| CN104849658A (en) * | 2015-06-01 | 2015-08-19 | 遵义市产品质量检验检测院 | Control system of contactor reliability test device |
| CN106771998A (en) * | 2016-11-22 | 2017-05-31 | 国网山东省电力公司东营供电公司 | A kind of tester for testing RCCB |
| CN106772015A (en) * | 2016-12-30 | 2017-05-31 | 中车长春轨道客车股份有限公司 | A kind of low capacity contactor electric life test system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2274834Y (en) * | 1996-10-01 | 1998-02-18 | 王清智 | Open phase protecting device for A. C. contact interlocking motor |
| CN101109787A (en) * | 2007-08-31 | 2008-01-23 | 天津市百利电气有限公司 | Intelligent detecting device for under-voltage releasing equipment of breaker |
| CN201335879Y (en) * | 2008-12-17 | 2009-10-28 | 沈阳兴华航空电器有限责任公司 | Switch performance testing device |
| CN202102088U (en) * | 2011-06-21 | 2012-01-04 | 苏州安泰变压器有限公司 | Circuit breaker testing device |
-
2011
- 2011-06-21 CN CN201110167472.2A patent/CN102841309B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2274834Y (en) * | 1996-10-01 | 1998-02-18 | 王清智 | Open phase protecting device for A. C. contact interlocking motor |
| CN101109787A (en) * | 2007-08-31 | 2008-01-23 | 天津市百利电气有限公司 | Intelligent detecting device for under-voltage releasing equipment of breaker |
| CN201335879Y (en) * | 2008-12-17 | 2009-10-28 | 沈阳兴华航空电器有限责任公司 | Switch performance testing device |
| CN202102088U (en) * | 2011-06-21 | 2012-01-04 | 苏州安泰变压器有限公司 | Circuit breaker testing device |
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| Publication number | Publication date |
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| CN102841309A (en) | 2012-12-26 |
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