CN201145735Y - Device for testing electric leakage circuit breaker - Google Patents
Device for testing electric leakage circuit breaker Download PDFInfo
- Publication number
- CN201145735Y CN201145735Y CNU2007201967794U CN200720196779U CN201145735Y CN 201145735 Y CN201145735 Y CN 201145735Y CN U2007201967794 U CNU2007201967794 U CN U2007201967794U CN 200720196779 U CN200720196779 U CN 200720196779U CN 201145735 Y CN201145735 Y CN 201145735Y
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- circuit breaker
- residual current
- current circuit
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Abstract
The utility model discloses a leakage circuit-breaker testing device, comprising power source, load, a leakage circuit-breaker and a power switch, wherein the power switch controls the power source, the power source comprises a live wire and a zero line, which are used for supplying electricity to the load, the leakage circuit-breaker is connected in parallel between the power source and the load. The device also comprises a residual operating current test branch and a break-time test branch which are connected in parallel between the leakage circuit-breaker and the load. The residual operating current test branch comprises an ammeter, a first switch and a potentiometer, wherein the ammeter, the first switch and the potentiometer are orderly connected, the ammeter is connected on the zero line between the power source and the leakage circuit-breaker, and the potentiometer is connected on the live wire between the leakage circuit-breaker and the load. The break-time test branch comprises a second switch and an electric second meter, wherein the second switch and the electric second meter are orderly connected, and the electric second meter is connected at the two ends of the load. Because the test device is specially provided with two test branches with main parameters of the leakage circuit-breaker, thereby being capable of testing the residual operating current and the break-time further in time and more correctly.
Description
Technical field
The utility model relates to a kind of proving installation, relates in particular to a kind of proving installation that is used to measure residual current circuit breaker.
Background technology
Continuous development along with automobile industry; some motor corporations have designed and developed out the onboard charger that aims at electric vehicle development; and this onboard charger uses civil power as charge power supply; relevant regulations according to national safety standard; must increase residual current circuit breaker at the input end of this electrical equipment protects; when leak electricity in the onboard charger charging process, during fault such as shorted to earth; residual current circuit breaker can be at short time internal cutting off power supply, thereby guarantees operating personnel's personal safety.
In using, safeguard work such as residual current circuit breaker, when the not clear fault of occurrence cause, because can't test to the electric property of the residual current circuit breaker used, can only will there be the residual current circuit breaker of fault suspicion all to scrap, both unreasonable, also caused great waste, therefore how to determine that a residual current circuit breaker is exactly that a product up to standard just seems very important, press for a kind of special proving installation and come it is tested, to strengthen its safe reliability.
The utility model content
The purpose of this utility model provides a kind of proving installation that residual current circuit breaker is tested specially, solves in low-voltage electrical product development, production and the working service process an urgent demand to the residual current circuit breaker electric performance test.
For overcoming the above problems, the utility model provides a kind of residual current circuit breaker proving installation, this device comprises the power switch of power supply, load, residual current circuit breaker and the described power supply of control, described power supply comprises live wire and zero line, be used for to described electric, the described residual current circuit breaker that is connected in parallel between described power supply and the load, this proving installation also comprise residue action current test branch road and the break test branch road that is connected in parallel between described residual current circuit breaker and the load.
Described residue action current test branch road comprises reometer, first switch, the potentiometer that connects successively, wherein, reometer is connected on the zero line between described power supply and the residual current circuit breaker, and described potentiometer is connected on the live wire between described residual current circuit breaker and the load.Described break test branch road comprises second switch and the electrical secondmeter that connects successively, wherein, described electrical secondmeter is connected the two ends of described load, also be in series with a resistance between described first switch and the potentiometer, described load two ends also are parallel with a voltage table, and described first switch and second switch are linked switch.
Preferably, described power switch is an isolating switch.
Further preferred, also be provided with fuse between described power supply and the residual current circuit breaker.
The beneficial effects of the utility model: because this proving installation is provided with the test branch road of two major parameters of residual current circuit breaker specially, can test out the residue action current and the break of residual current circuit breaker in time, accurately, simultaneously, owing to adopt fuse and power switch simultaneously, make that this proving installation is safer with break.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model residual current circuit breaker proving installation.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
In the art, usually the residual current circuit breaker that is adopted has two major parameters: residue action current and break, the sensitivity that the size reflection residual current circuit breaker of residue action current detects the residue action current of representing the electric leakage degree, break is represented when residual current circuit breaker detects generation greater than specified residue action current, be after current circuit begins electric leakage, the speed degree of residual current circuit breaker breaking circuit, the function of this proving installation only limit to test these two major parameters of residual current circuit breaker.
Accompanying drawing 1 is the circuit theory diagrams of this proving installation.This device comprises power supply, load R, residual current circuit breaker BH and controls the power switch K1 of described power supply, and described power supply comprises live wire L and zero line N, is used for the power supply to load R, and described residual current circuit breaker BH is connected in parallel between power supply and the load R.This proving installation also comprises residue action current test branch road and the break test branch road that is connected in parallel between described residual current circuit breaker BH and the load R.
Residue action current test branch road comprises reometer A, the first K switch 2-1, the potentiometer R1 that connects successively, wherein, reometer A is connected on the zero line N between power supply and the residual current circuit breaker BH, potentiometer R1 is connected on the live wire L between described residual current circuit breaker BH and the load R, also is in series with a resistance R 2 between the first K switch 2-1 and the potentiometer R1.
Potentiometer R1 can select slide rheostat well-known in the art for use, and resistance R 2 is common fixed value resistance, and the residue action current scope that can measure according to actual needs of specifically selecting for use of potentiometer R1 and resistance R 2 is determined.
The residue action current produces principle: reometer A, the first K switch 2-1, resistance R 2 and potentiometer R1 have formed the residue action current test branch road of residual current circuit breaker BH to be measured, closed power switch K1, power on circuitry, the closed first K switch 2-1, this test branch road is incorporated in the described proving installation circuit immediately.Before the not closed first K switch 2-1, the electric current at the two ends, the left and right sides of described residual current circuit breaker BH equates, in case the closed first K switch 2-1, on residual current circuit breaker BH to be measured, produce residual current immediately, promptly the electric current of residual current circuit breaker BH right-hand member is divided into two-way at this moment, one the tunnel is the electric current that flows to load R, and one the tunnel is the electric current that flows to residue action current test branch road.Can adjust the size of residual current by the resistance of regulator potentiometer R1, whether the residue action current that reometer A detects residual current circuit breaker BH to be measured meets the regulation of product standard, can judge when the real surplus electric current of residual current circuit breaker BH to be measured during according to this more than or equal to specified residue action current, whether residual current circuit breaker BH to be measured produces the action of branch deenergizing, and whether the electrical circuit breakers BH that leaks hunting exists the specified residue non-operating current value of product design files specify.
Break test branch road comprises second switch K2-2 and the electrical secondmeter S that connects successively, and wherein, electrical secondmeter S is connected the two ends of described load R.Load R two ends also are parallel with a voltage table V, are used for the magnitude of voltage at sensing lead R two ends.
The first K switch 2-1 and second switch K2-2 are one group of linked switch, and they are closed simultaneously, perhaps disconnect simultaneously, can select double-pole single throw commonly used for use.
The measuring principle of residual current circuit breaker BH break to be measured: second switch K2-2, electrical secondmeter S form break test branch road.Break must have residue energy measurement just during action current at residual current circuit breaker BH to be measured, as the closed first K switch 2-1, when residual current circuit breaker BH to be measured produces the residue action current, because the first K switch 2-1 and second switch K2-2 are linked switch, this moment, second switch K2-2 also was in closure state, simultaneously send the electrical secondmeter enabling signal to the port A of electrical secondmeter S, at this moment, electrical secondmeter picks up counting, spent a period of time, if residual current circuit breaker BH to be measured turn-offs voluntarily, then the detected output voltage of voltage table V becomes 0V, the variation of this voltage becomes the stopwatch stop signal of the port B of electrical secondmeter S, and to stop be exactly the break of residual current circuit breaker BH to be measured to electrical secondmeter S during this period of time from starting to.
Power switch K1 can select general regular tap for use, and also optional usefulness has the isolating switch of certain break, and the preferred isolating switch with break more a little longer than residual current circuit breaker break that adopts can make circuit safer.The preferential isolating switch that adopts in this specific embodiment with certain break.
Power switch K1 is used for big residual current is measured, and the protecting component of residual current circuit breaker BH to be measured when being regardless of the deenergizing fault.Regulation according to " GB16916.1 " family expenses and similar applications not with residual current action breaker (RCCB) part 1 of overcurrent protection: general rule " "; no matter how many specified residue action current of residual current circuit breaker to be measured values is; must test residual current circuit breaker real surplus action current value be 5A, 10A, 20A, 50A, 100A, 200A and 500A all, the disjunction test when trending towards infinitely great current value.In actual conditions; the load current value of residual current circuit breaker to be measured; the maximum operating currenbt that comprises whole test circuit is much smaller than these test current values; if hinder for some reason can't the branch deenergizing for residual current circuit breaker to be measured in such test process; will the short circuit phenomenon of destruction appears testing power supply is produced; power switch K1 is exactly a holding circuit in this case, and the shutoff of power switch K1 is more longer slightly than the break of residual current circuit breaker BH to be measured actuation time.If residual current circuit breaker BH to be measured is normal, then power switch K1 has little time the branch deenergizing, and residual current circuit breaker BH to be measured disjunction produces the circuit of big residual current, and proving installation promptly is protected like this.If residual current circuit breaker BH work to be measured is undesired, when the leakage current in the circuit has reached the specified residual current of this residual current circuit breaker BH, when residual current circuit breaker BH to be measured does not also turn-off, because the shutoff of power switch K1 is more longer slightly than the break of residual current circuit breaker BH to be measured actuation time.After a period of time, the shutoff that arrives power switch K1 when the electric leakage time is during actuation time, and power switch K1 automatically shuts down.
In this proving installation, between power supply and residual current circuit breaker BH, also be provided with fuse FL, it is the protecting component of isolating switch K1.Fuse FL can adopt general low melting material and materials with high melting point to make, as terne metal, zinc, silver, copper, aluminium etc., and visual various testing requirements and selecting for use arbitrarily.In big residual current test; when residual current circuit breaker BH to be measured is regardless of the fault of deenergizing; after a while; isolating switch K1 should divide deenergizing immediately; guarantee that proving installation is not damaged, but power switch K1 is a kind of mechanical switch after all, in case occur power switch K1 and residual current circuit breaker BH to be measured take place simultaneously can't breaking circuit fault the time; will cause unpredictable serious consequence, this moment, fuse FL just became last protecting component.When the electric current in the circuit was excessive, fuse FL will fuse automatically, thereby disconnecting circuit connects the normal operation of protection tester.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1, a kind of residual current circuit breaker proving installation, the power switch that comprises power supply, load, residual current circuit breaker and the described power supply of control, described power supply comprises live wire and zero line, be used for to described electric, the described residual current circuit breaker that is connected in parallel between described power supply and the load is characterized in that: this proving installation also comprises residue action current test branch road and the break test branch road that is connected in parallel between described residual current circuit breaker and the load.
2, proving installation according to claim 1, it is characterized in that: described residue action current test branch road comprises reometer, first switch, the potentiometer that connects successively, wherein, reometer is connected on the zero line between described power supply and the residual current circuit breaker, and described potentiometer is connected on the live wire between described residual current circuit breaker and the load.
3, proving installation according to claim 1 is characterized in that: described break test branch road comprises second switch and the electrical secondmeter that connects successively, and wherein, described electrical secondmeter is connected the two ends of described load.
4, proving installation according to claim 2 is characterized in that: also be in series with a resistance between described first switch and the potentiometer.
5, proving installation according to claim 3 is characterized in that: described load two ends also are parallel with a voltage table.
6, according to any described proving installation of claim 2 to 5, it is characterized in that: described first switch and second switch are linked switch.
7, proving installation according to claim 1 is characterized in that: described power switch is an isolating switch.
8, proving installation according to claim 6 is characterized in that: also be provided with fuse between described power supply and the residual current circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201967794U CN201145735Y (en) | 2007-12-31 | 2007-12-31 | Device for testing electric leakage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201967794U CN201145735Y (en) | 2007-12-31 | 2007-12-31 | Device for testing electric leakage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201145735Y true CN201145735Y (en) | 2008-11-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201967794U Expired - Lifetime CN201145735Y (en) | 2007-12-31 | 2007-12-31 | Device for testing electric leakage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201145735Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436191A (en) * | 2011-11-03 | 2012-05-02 | 海尔集团公司 | Control circuit and control method for safe power-saving power supply |
| CN102435894A (en) * | 2011-11-15 | 2012-05-02 | 浙江大学 | Digital leakage protector tester and test method thereof |
| CN103364627A (en) * | 2013-07-15 | 2013-10-23 | 长城电器集团有限公司 | Leakage current detection circuit of automatic reclosing lock disconnector |
| CN103698696A (en) * | 2013-12-18 | 2014-04-02 | 国家电网公司 | Money-owning tripping switch detection device |
| CN105527566A (en) * | 2016-01-07 | 2016-04-27 | 广东电网有限责任公司电力科学研究院 | An experiment table for collecting signals of a high-voltage vacuum circuit breaker in opening/closing process |
| CN106168650A (en) * | 2016-08-30 | 2016-11-30 | 中山市开普电器有限公司 | A kind of specified residue connects breaking capacity test device |
| CN106885983A (en) * | 2015-12-15 | 2017-06-23 | 江苏德春电力科技股份有限公司 | Breaker mechanic property on-Line Monitor Device |
| CN109932643A (en) * | 2018-12-27 | 2019-06-25 | 杭州西力智能科技股份有限公司 | On-load switch current over-zero disjunction arc-extinguishing system and method built in a kind of single-phase electric energy meter |
| CN112611951A (en) * | 2020-11-27 | 2021-04-06 | 神华四川能源有限公司江油发电厂 | RCD (remote control device) online test system and test method thereof |
| CN113296042A (en) * | 2021-07-02 | 2021-08-24 | 杭州群特电气有限公司 | System and method for detecting current and time parameters of leakage current protector tester |
-
2007
- 2007-12-31 CN CNU2007201967794U patent/CN201145735Y/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436191A (en) * | 2011-11-03 | 2012-05-02 | 海尔集团公司 | Control circuit and control method for safe power-saving power supply |
| CN102436191B (en) * | 2011-11-03 | 2017-06-23 | 青岛海尔滚筒洗衣机有限公司 | A kind of control method of power control circuit |
| CN102435894A (en) * | 2011-11-15 | 2012-05-02 | 浙江大学 | Digital leakage protector tester and test method thereof |
| CN103364627B (en) * | 2013-07-15 | 2016-09-14 | 长城电器集团有限公司 | Autoreclose breaker leakage current detection circuit |
| CN103364627A (en) * | 2013-07-15 | 2013-10-23 | 长城电器集团有限公司 | Leakage current detection circuit of automatic reclosing lock disconnector |
| CN103698696A (en) * | 2013-12-18 | 2014-04-02 | 国家电网公司 | Money-owning tripping switch detection device |
| CN103698696B (en) * | 2013-12-18 | 2016-02-24 | 国家电网公司 | Arrearage trip switch pick-up unit |
| CN106885983A (en) * | 2015-12-15 | 2017-06-23 | 江苏德春电力科技股份有限公司 | Breaker mechanic property on-Line Monitor Device |
| CN105527566A (en) * | 2016-01-07 | 2016-04-27 | 广东电网有限责任公司电力科学研究院 | An experiment table for collecting signals of a high-voltage vacuum circuit breaker in opening/closing process |
| CN106168650A (en) * | 2016-08-30 | 2016-11-30 | 中山市开普电器有限公司 | A kind of specified residue connects breaking capacity test device |
| CN109932643A (en) * | 2018-12-27 | 2019-06-25 | 杭州西力智能科技股份有限公司 | On-load switch current over-zero disjunction arc-extinguishing system and method built in a kind of single-phase electric energy meter |
| CN112611951A (en) * | 2020-11-27 | 2021-04-06 | 神华四川能源有限公司江油发电厂 | RCD (remote control device) online test system and test method thereof |
| CN113296042A (en) * | 2021-07-02 | 2021-08-24 | 杭州群特电气有限公司 | System and method for detecting current and time parameters of leakage current protector tester |
| CN113296042B (en) * | 2021-07-02 | 2022-07-26 | 杭州群特电气有限公司 | System and method for detecting current and time parameters of leakage current protector tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081105 |