CN204789793U - Earth -leakage protector's state verification ware under explosion -proof environment - Google Patents
Earth -leakage protector's state verification ware under explosion -proof environment Download PDFInfo
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- CN204789793U CN204789793U CN201520422127.2U CN201520422127U CN204789793U CN 204789793 U CN204789793 U CN 204789793U CN 201520422127 U CN201520422127 U CN 201520422127U CN 204789793 U CN204789793 U CN 204789793U
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- test circuit
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- earth leakage
- leakage protective
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Abstract
The utility model relates to an earth -leakage protector's state verification ware under explosion -proof environment, including meeting the earth -leakage protector in the power return circuit, earth -leakage protector is sealed in explosion -proof block terminal, and earth -leakage protector's output is connected with state test circuit, and state test circuit includes test circuit live wire, test circuit zero line, test circuit ground wire, indicating circuit and simulation electric leakage circuit, and the test circuit live wire is connected with the live wire of earth -leakage protector output, and the test circuit zero line is connected with the zero line of earth -leakage protector output, test circuit ground wire ground connection, indicating circuit is the pilot lamp of series connection between test circuit live wire and test circuit zero line, simulation electric leakage circuit is connected between test circuit live wire and test circuit ground wire behind test button and the bypass resistor connected series including the test button and the bypass resistance of establishing ties each other. This state verification ware portable, easy operation can carry out the test check to earth -leakage protector under the state of not dismantling explosion -proof block terminal.
Description
Technical field
The utility model relates to a kind of state verification device of earth leakage protective device, particularly the state verification device of earth leakage protective device under a kind of explosion-proof environment.
Background technology
In low-voltage distribution system, earth leakage protective device is one of most effective measures preventing accident of human electric shock, is also to prevent because electric leakage causes the technical measures of electrical fire and electrical equipment damage accident.But be not equal to and be perfectly safe after installation earth leakage protective device; time earth leakage protective device the same as all electrical equipment also has bad, if do not carry out regular inspection to it, once earth leakage protective device breaks down; just can not play due leakage tripping protective effect, be easy to electric shock accidents occurs.
" earth leakage protective device safety monitor regulation " the 39 article of regulation that country's Ministry of Labour's nineteen ninety is issued must be made regular check on operating earth leakage protective device, monthly at least checking once, for testing the quality of earth leakage protective device, guaranteeing Electrical Safety.
In " well logging each operation safety regulation for operations " Article 5 safety utilization of electric power code, the earth leakage protective device of regulation instrument shelter, mobile field camp should carry out test inspection for every 15 days, and guaranteed performance is intact.Distribution section will have eye-catching safety notice, and each inspection must have record, and content is detailed.
For ensureing site mud logging personnel's Electrical Safety and observing national regulation, necessary routine test earth leakage protective device, test and just explosion-proof electrical distribution box must be taken apart, and monthly must take apart once.The dismounting of explosion-proof electrical distribution box must be undertaken by the instrument personnel of repairing with qualification, and often dismounting explosion-proof electrical distribution box easily causes the bad seals of explosion-proof electrical distribution box.Site mud logging personnel do not possess the qualification of dismounting explosion-proof electrical distribution box, can not the quality of routine test earth leakage protective device.When earth leakage protective device is damaged, if there is no corresponding detection means, can not Timeliness coverage, when there is electric leakage accident, fire, blast, even casualties will be caused.
Utility model content
The purpose of this utility model is, overcomes problems of the prior art, provides the state verification device of earth leakage protective device under a kind of explosion-proof environment, under the state not dismantling explosion-proof electrical distribution box, can carry out test inspection to earth leakage protective device.
For solving above technical matters, the state verification device of earth leakage protective device under a kind of explosion-proof environment of the present utility model, comprise the earth leakage protective device be connected in electric power loop, described earth leakage protective device is sealed in explosion-proof electrical distribution box, the output terminal of described earth leakage protective device is connected with state verification circuit, described state verification circuit comprises test circuit live wire, test circuit zero line, test circuit ground wire, indicating circuit and simulation leakage circuit, described test circuit live wire is connected with the live wire of earth leakage protective device output terminal, described test circuit zero line is connected with the zero line of earth leakage protective device output terminal, described test circuit is ground wire grounded, described indicating circuit is be connected on the pilot lamp between described test circuit live wire and described test circuit zero line, described simulation leakage circuit comprises testing button and the bypass resistance of series connection mutually, is connected between described test circuit live wire and described test circuit ground wire after described testing button and bypass resistance are in series.
Relative to prior art, the utility model achieves following beneficial effect: under normal circumstances, and pilot lamp is in illuminating state, shows that earth leakage protective device does not trip; When testing; press testing button; the live wire of earth leakage protective device output terminal is by bypass resistance ground connection; produce leakage current; leakage current reaches more than the safety value of earth leakage protective device; earth leakage protective device power-off then illustrates that earth leakage protective device is good, if do not have power-off, shows that earth leakage protective device has been broken, and needs to change in time.
As preferred version of the present utility model, the resistance of described bypass resistance is 7.3K Ω.In order to ensure personal safety, earth leakage protective device rated residual operating current should be not more than human-body safety current value, and the human-body safety current value of generally acknowledging in the world is 30mA; Adopt the bypass resistance of 7.3K Ω, under rated operational voltage 220V, the leakage current of 30mA can be produced, judge electric equipment leak electricity or human electric shock time earth leakage protective device whether safety.
As preferred version of the present utility model, be also provided with indicator light switch in described indicating circuit, described indicator light switch and described pilot lamp are in series.Indicator light switch is in dissengaged positions before testing, when testing, first opens indicator light switch and pilot lamp is lighted.
As the further preferred version of the utility model, also selector switch is in series with in described simulation leakage circuit, common end and the described testing button of described selector switch are in series, first selecting side of described selector switch is connected with described test circuit live wire, and the second selecting side of described selector switch is connected with described test circuit zero line.The effect of selector switch changes inverse time when live wire and zero line in circuit connect; if press testing button power-off does not occur; switch can be stirred; again press testing button; if there is power-off, illustrate that earth leakage protective device is good; if there is no power-off, be show that earth leakage protective device has been broken, need to change in time.
As the further preferred version of the utility model, the input end of described test circuit live wire is connected with the L pile crown of individual event three-pin plug, the input end of described test circuit zero line is connected with the N pile crown of described individual event three-pin plug, and the input end of described test circuit ground wire is connected with the E pile crown of described individual event three-pin plug.The live wire of test circuit, zero line and ground wire connect to the corresponding pile crown of individual event three-pin plug respectively, meet the principle of left zero right fire; During test; as long as this individual event three-pin plug is inserted in any one three supply socket of earth leakage protective device output terminal; press testing button to test earth leakage protective device; very simple and convenient; and this tester is easy to carry, solve at one stroke a test difficult problem for the earth leakage protective device under explosion-proof environment in explosion-proof electrical distribution box.
Accompanying drawing explanation
Be described in further detail the utility model below in conjunction with the drawings and specific embodiments, accompanying drawing only provides reference and explanation use, is not used to limit the utility model.
Fig. 1 is the schematic diagram of the state verification device of earth leakage protective device under the utility model explosion-proof environment.
In figure: RCD. earth leakage protective device; H1. pilot lamp; R1. bypass resistance; SW. selector switch; SW-PB: testing button; K1. indicator light switch.
Embodiment
As shown in Figure 1, the state verification device of earth leakage protective device under the utility model explosion-proof environment, comprise the earth leakage protective device RCD be connected in electric power loop, earth leakage protective device RCD is sealed in explosion-proof electrical distribution box, the output terminal of earth leakage protective device RCD is connected with state verification circuit, state verification circuit comprises test circuit live wire, test circuit zero line, test circuit ground wire, indicating circuit and simulation leakage circuit, test circuit live wire is connected with the live wire of earth leakage protective device output terminal, test circuit zero line is connected with the zero line of earth leakage protective device output terminal, test circuit is ground wire grounded, indicating circuit is the pilot lamp H1 be connected between test circuit live wire and test circuit zero line, simulation leakage circuit comprises after the testing button SW-PB of mutually series connection and bypass resistance R1, testing button SW-PB and bypass resistance R1 are in series and being connected between test circuit live wire and test circuit ground wire.
Under normal circumstances, pilot lamp H1 is in illuminating state, shows that earth leakage protective device RCD does not trip; When testing; press testing button SW-PB; the live wire of earth leakage protective device output terminal is by bypass resistance R1 ground connection; produce leakage current; leakage current reaches more than the safety value of earth leakage protective device; earth leakage protective device RCD power-off then illustrates that earth leakage protective device RCD is good, if do not have power-off, shows that earth leakage protective device RCD has broken, needs to change in time.
The resistance of bypass resistance R1 is 7.3K Ω.In order to ensure personal safety, earth leakage protective device rated residual operating current should be not more than human-body safety current value, and the human-body safety current value of generally acknowledging in the world is 30mA; Adopt the bypass resistance R1 of 7.3K Ω, under rated operational voltage 220V, the leakage current of 30mA can be produced, judge electric equipment leak electricity or human electric shock time earth leakage protective device RCD whether safety.
Can also be provided with indicator light switch K1 in indicating circuit, indicator light switch K1 and pilot lamp H1 is in series.Indicator light switch K1 is in dissengaged positions before testing, when testing, first opens indicator light switch K1 and pilot lamp H1 is lighted.
Selector switch SW can be in series with in simulation leakage circuit, common end and the testing button SW-PB of selector switch SW are in series, first selecting side of selector switch SW is connected with test circuit live wire, and second selecting side of selector switch SW is connected with test circuit zero line.The effect of selector switch SW changes inverse time when live wire and zero line in circuit connect; if press testing button SW-PB power-off does not occur; switch can be stirred; again press testing button SW-PB; if there is power-off, illustrate that earth leakage protective device RCD is good; if there is no power-off, be show that earth leakage protective device RCD has broken, need to change in time.
The input end of test circuit live wire is connected with the L pile crown of individual event three-pin plug, and the input end of test circuit zero line is connected with the N pile crown of individual event three-pin plug, and the input end of test circuit ground wire is connected with the E pile crown of individual event three-pin plug.The live wire of test circuit, zero line and ground wire connect to the corresponding pile crown of individual event three-pin plug respectively, meet the principle of left zero right fire after inserting three sockets.During test; as long as this individual event three-pin plug is inserted in any one three supply socket of earth leakage protective device output terminal; press testing button SW-PB to test earth leakage protective device RCD; press testing button SW-PB and power-off does not occur; can switch be stirred, again press testing button SW-PB, if there is power-off, illustrate that earth leakage protective device RCD is good; if there is no power-off, be show that earth leakage protective device RCD has broken, need to change in time.Whole operation is very simple and convenient, and this tester is easy to carry, solves at one stroke a test difficult problem of the earth leakage protective device RCD under explosion-proof environment in explosion-proof electrical distribution box.
The foregoing is only the better possible embodiments of the utility model, non-ly therefore limit to scope of patent protection of the present utility model.In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.The utility model can pass through without the technical characteristic described or adopt existing techniques in realizing, does not repeat them here.
Claims (5)
1. the state verification device of earth leakage protective device under an explosion-proof environment, comprise the earth leakage protective device be connected in electric power loop, described earth leakage protective device is sealed in explosion-proof electrical distribution box, it is characterized in that: the output terminal of described earth leakage protective device is connected with state verification circuit, described state verification circuit comprises test circuit live wire, test circuit zero line, test circuit ground wire, indicating circuit and simulation leakage circuit, described test circuit live wire is connected with the live wire of earth leakage protective device output terminal, described test circuit zero line is connected with the zero line of earth leakage protective device output terminal, described test circuit is ground wire grounded, described indicating circuit is be connected on the pilot lamp between described test circuit live wire and described test circuit zero line, described simulation leakage circuit comprises testing button and the bypass resistance of series connection mutually, is connected between described test circuit live wire and described test circuit ground wire after described testing button and bypass resistance are in series.
2. the state verification device of earth leakage protective device under explosion-proof environment according to claim 1, is characterized in that: the resistance of described bypass resistance is 7.3K Ω.
3. the state verification device of earth leakage protective device under explosion-proof environment according to claim 1, it is characterized in that: be also provided with indicator light switch in described indicating circuit, described indicator light switch and described pilot lamp are in series.
4. the state verification device of earth leakage protective device under explosion-proof environment according to claim 1; it is characterized in that: in described simulation leakage circuit, be also in series with selector switch; common end and the described testing button of described selector switch are in series; first selecting side of described selector switch is connected with described test circuit live wire, and the second selecting side of described selector switch is connected with described test circuit zero line.
5. the state verification device of earth leakage protective device under explosion-proof environment according to any one of claim 1 to 4; it is characterized in that: the input end of described test circuit live wire is connected with the L pile crown of individual event three-pin plug; the input end of described test circuit zero line is connected with the N pile crown of described individual event three-pin plug, and the input end of described test circuit ground wire is connected with the E pile crown of described individual event three-pin plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520422127.2U CN204789793U (en) | 2015-06-18 | 2015-06-18 | Earth -leakage protector's state verification ware under explosion -proof environment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520422127.2U CN204789793U (en) | 2015-06-18 | 2015-06-18 | Earth -leakage protector's state verification ware under explosion -proof environment |
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| CN204789793U true CN204789793U (en) | 2015-11-18 |
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| CN201520422127.2U Expired - Fee Related CN204789793U (en) | 2015-06-18 | 2015-06-18 | Earth -leakage protector's state verification ware under explosion -proof environment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291175A (en) * | 2016-07-29 | 2017-01-04 | 许良炎 | Earth leakage protective device double test circuit and method of testing |
| CN106932717A (en) * | 2016-08-31 | 2017-07-07 | 中山市开普电器有限公司 | A kind of earth leakage protective device comprehensive test device |
| CN110244160A (en) * | 2018-03-09 | 2019-09-17 | 黄家军 | Leakage current detector |
| CN110297151A (en) * | 2019-05-24 | 2019-10-01 | 温州华亚电气有限公司 | A kind of observation circuit protection circuit of ground fault earth leakage protective device operation troubles |
-
2015
- 2015-06-18 CN CN201520422127.2U patent/CN204789793U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291175A (en) * | 2016-07-29 | 2017-01-04 | 许良炎 | Earth leakage protective device double test circuit and method of testing |
| CN106932717A (en) * | 2016-08-31 | 2017-07-07 | 中山市开普电器有限公司 | A kind of earth leakage protective device comprehensive test device |
| CN106932717B (en) * | 2016-08-31 | 2023-02-10 | 中山市开普电器有限公司 | Comprehensive testing device for leakage protector |
| CN110244160A (en) * | 2018-03-09 | 2019-09-17 | 黄家军 | Leakage current detector |
| CN110297151A (en) * | 2019-05-24 | 2019-10-01 | 温州华亚电气有限公司 | A kind of observation circuit protection circuit of ground fault earth leakage protective device operation troubles |
| CN110297151B (en) * | 2019-05-24 | 2022-04-08 | 温州华亚电气有限公司 | Monitoring circuit protection circuit for operation fault of earth fault leakage protector |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20180618 |