CN103323725B - Low voltage switch box short circuit tester - Google Patents
Low voltage switch box short circuit tester Download PDFInfo
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- CN103323725B CN103323725B CN201210079626.7A CN201210079626A CN103323725B CN 103323725 B CN103323725 B CN 103323725B CN 201210079626 A CN201210079626 A CN 201210079626A CN 103323725 B CN103323725 B CN 103323725B
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- 238000012360 testing method Methods 0.000 claims abstract description 33
- 238000011084 recovery Methods 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000010891 electric arc Methods 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Abstract
A kind of test result is accurate, can judge can normal power-up run low voltage switch box short circuit tester, because short circuit causes equipment burnout, electric arc burn, personnel's electrification during to prevent power transmission, guarantee the low voltage switch box short circuit tester of handling safety, comprise accumulator, power switch, has the inverter of short-circuit protection function, is connected on the first relay between inverter follower; Warning recovery/stop button, start button, the second relay; The time relay, time relay normally opened contact KJ-1, the first relay normally open contact K1-1 and the 3rd relay; Interrupt output button, A phase testing button, relay K A, B phase testing button, relay K B, C phase testing button relay K C; Be connected on the voltage table of inverter output end, reometer, interlock contact KA-1`2, KB-1`2, KC-1`2, second relay normally open contact K2-4, is connected to sound light alarming circuit by the first relay normally closed contact K1-3, the 3rd relay normally open contact K3-3 after described power switch.
Description
Technical field
The present invention relates to a kind of low voltage switch box short circuit tester.
Background technology
After AC low voltage power switch box and low-voltage cable fabrication and installation complete, before preparing power transmission, because there being the secondary circuits such as operation, measurement, metering, directly cannot measuring with megohmmeter or multimeter and judging that can it normal power-up run.Equipment burnout, electric arc burn, personnel's electrification is caused during power transmission.
Summary of the invention
It is accurate that the technical problem to be solved in the present invention is to provide a kind of test result, and can be able to judge the low voltage switch box short circuit tester run of normal power-up, because short circuit causes equipment burnout, electric arc burn, personnel's electrification during to prevent power transmission, guarantees handling safety.
The low voltage switch box short circuit tester that the present invention relates to, comprises accumulator E, fuse F, power switch K, and its special character is: be also provided with the inverter U with short-circuit protection function, is connected on the first relay K 1 between inverter U bis-output terminals, warning recovery/stop button SB1, start button SB2 after being serially connected in power switch K successively and between earth terminal and there is the second relay K 2 of auto-lock function, time relay KJ after being serially connected in start button SB2 and between earth terminal, the time relay normally opened contact KJ-1 after being serially connected in start button SB2 successively and between earth terminal, the first relay normally open contact K1-1 and there is the 3rd relay K 3 of auto-lock function, be connected on interrupt output button SB3 and the luminous indicating circuit of interrupt output of the first relay normally open contact K1-1 output terminal respectively, luminous indicating circuit is tested with the A phase testing button SB4 of earth terminal and A phase after being serially connected in interrupt output button SB3 successively, the relay K A with auto-lock function after being serially connected in interrupt output button SB3 and between earth terminal, B phase testing button SB5 after being serially connected in interrupt output button SB3 successively and between earth terminal and B phase test luminous indicating circuit, the relay K B with auto-lock function after being serially connected in interrupt output button SB3 and between earth terminal, C phase testing button SB6 after being serially connected in interrupt output button SB3 successively and between earth terminal and C phase test luminous indicating circuit, the relay K C with auto-lock function after being serially connected in interrupt output button SB3 and between earth terminal, be connected on the time relay normally opened contact KJ-2 between inverter U bis-output terminals successively, reometer A and relay linkage contact sets, the voltage table V between inverter U bis-output terminals is connected on by time relay normally opened contact KJ-2, described relay linkage contact sets is by the interlock contact KA-1`2 of relay K A, the interlock contact KB-1`2 of relay K B and the interlock contact KC-1`2 of relay K C forms, the wherein interlock contact KA-1`2 of relay K A, the interlock contact KB-1`2 of relay K B, the interlock contact KC-1`2 of relay K C is made up of normally closed contact and normally opened contact respectively, two ends, three-group linkage contact are in parallel and mid point draws output terminals A respectively, B, C and O, the second relay normally open contact K2-4 is connected in inverter U start end, by the first relay normally closed contact K1-3 after described power switch K, 3rd relay normally open contact K3-3 is connected to sound light alarming circuit.
Also be provided with ac power input end, ac power input end is connected with accumulator E by step-down rectifier filter road circuit, is used for accumulators E to charge.
Power indicating circuit is connected to after described power switch K.
This tester is by converting power frequency 220V alternating voltage (peak value 400V to 12V DC voltage, sinusoidal wave), directly be added on low-voltage cabinet main bus-bar or cable conductor, tested by a period of time, electric current is at below 10mA, voltage, without obviously falling or short circuit sound and light alarm, proves that this equipment can normal power-up run.Meanwhile, because this tester Power convert power is at about 400W, low-tension switch cabinet electric operating and measuring circuit test can be completed.Test result is accurate, and can be able to judge the low voltage switch box short circuit tester run of normal power-up, because short circuit causes equipment burnout, electric arc burn, personnel's electrification during to prevent power transmission, guarantees handling safety.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
As shown in the figure, this tester comprises the accumulator E be cascaded, fuse F, power switch K, have and 12V direct current is become 220V exchange and the inverter U with short-circuit protection function, the power indicating circuit after being connected on described power switch K and between earth terminal, be connected on the first relay (AC relay) K1 between inverter U bis-output terminals, warning recovery/stop button SB1, start button SB2 after being connected on power switch K successively and between earth terminal and there is the second relay K 2 of auto-lock function, time relay KJ after being connected on start button SB2 and between earth terminal, the time relay normally opened contact KJ-1 after being connected on start button SB2 successively and between earth terminal, the first relay normally open contact K1-1 and there is the relay K 3 of auto-lock function, be connected on the interrupt output button SB3 after the first relay normally open contact K1-1 and the luminous indicating circuit of interrupt output respectively, the other end ground connection of the luminous indicating circuit of interrupt output, A phase testing button SB4 after being serially connected in interrupt output button SB3 successively and between earth terminal and A phase test luminous indicating circuit, the relay K A with auto-lock function after being serially connected in interrupt output button SB3 and between earth terminal, B phase testing button SB5 after being serially connected in interrupt output button SB3 successively and between earth terminal and B phase test luminous indicating circuit, B phase tests the other end ground connection of luminous indicating circuit, the relay K B with auto-lock function after being serially connected in interrupt output button SB3 and between earth terminal, C phase testing button SB6 after being serially connected in interrupt output button SB3 successively and between earth terminal and C phase test luminous indicating circuit, C phase tests the other end ground connection of luminous indicating circuit, the relay K C with auto-lock function after being serially connected in interrupt output button SB3 and between earth terminal, be connected on the time relay normally opened contact KJ-2 between inverter U bis-output terminals successively, reometer A and relay linkage contact sets, the voltage table V between inverter U bis-output terminals is connected on by time relay normally opened contact KJ-2, described relay linkage contact sets is by the interlock contact KA-1`2 of relay K A, the interlock contact KB-1`2 of relay K B, the interlock contact KC-1`2 of relay K C forms, wherein link contact KA-1`-2, interlock contact KB-1`2, interlock KC-1`2 two ends, contact are in parallel and mid point draws output terminals A respectively, B, C and O, the normal contact K2-4 of the second relay is connected in inverter U bis-start ends, described warning recovery/stop button SB1 and interrupt output button SB3 is normally closed button.
?sound light alarming circuit is connected to by the first relay normally closed contact K1-3, the 3rd relay normally open contact K3-3 after described power switch K.
This tester is also provided with ac power input end 1, the step-down rectifier filter road circuit be made up of transformer, commutator tube D1-4 and electric capacity C1 is connected at described ac power input end 1, step-down rectifier filter road circuit output end is connected with accumulator E with electric capacity C2 by diode D5, is used for accumulators E to charge; On step-down rectifier filter road, circuit output end is also provided with charging indication by diode D5 and electric capacity C2.
Second relay K 2 of described auto-lock function, the 3rd relay K 3, relay K A, relay K B, relay K C realize respectively by normally opened contact K2-1, K3-1, KA-4, KB-4, KC-4.
Described charging indication is that resistance R7 and luminotron LED7 form, power indicating circuit is made up of luminotron LED1 and resistance R1, the luminous indicating circuit sound light alarming circuit of described interrupt output forms by raising ring device 2, luminescent device 3, luminotron LED3 and resistance R3, and the luminous indicating circuit of described interrupt output and A phase ~ C phase are tested luminous indicating circuit and be made up of luminotron LED2 and resistance R2, luminotron LED4 and resistance R4, luminotron LED5 and resistance R5, luminotron LED6 and resistance R6 respectively.
Method of operating is as follows:
1) disconnect the connection needing low-voltage distribution cabinet or cable and power-supply device (as transformer, engine etc.) and the consumer (as motor, electrical appliance etc.) measured, confirm power-supply device and consumer and need testing equipment to disconnect completely.
2) p-wire is reliably connected by the order of A, B, C, O with measured switch cabinet main bus-bar or cable conductor, the other end of p-wire is connected on the corresponding output end A of tester, B, C, O simultaneously, check that whether correct wiring is reliable.
3) K is turned on the power switch, press start button SB2, tester startup optimization, second relay K 2 adhesive self-locking, time relay KJ starts timing, and normally opened contact K2-4 closes, and inverter U starts, export 220V voltage, first relay K 1 adhesive, normally opened contact K1-1 closes, and after 10 seconds, normally opened contact KJ-1, KJ-2 close, relay K 3 adhesive self-locking, normally opened contact K3-3 closes but normally closed contact K1-3 disconnects, and checks voltage table V pointer whether between 200V-240V, in this way, tester normal operation, can carry out test operation.
4) measuring method between low-voltage distribution cabinet phase line and zero line, press testing button SB4, pilot lamp is bright, relay K A adhesive self-locking, an interlock contact KA-1`2 left side is disconnected right logical, output terminals A and produce about 220V voltage between B, C, 0 and be added between low-voltage bus bar to be measured, after 1 minute, reometer instruction is at below 10mA, voltage is without obviously falling, tester without short circuit sound and light alarm, prove A phase bus with between B phase, C phase and O line without unfavorable condition, can normally run.Other two-phase method of testings are identical with A phase.If electricity-measuring meter is installed in low-voltage distribution cabinet, reometer instruction, between 10mA-20mA, should be considered as normal.
5) low-voltage distribution cabinet electric operating test, after starting tester by (3), press testing button SB4, SB5, SB6 and power up to A, B, C phase bus, main by the existing electricity of cabinet pilot lamp display device, operate each electric operating switch by power transmission step, check that whether itself and separating brake be normal.
6) when equipment under test exists short circuit, inverter U quits work non-output signal, relay K 1 dead electricity, and normally closed contact K1-3 closes, and sound light alarming circuit work is reported to the police; When A phase connection mistake, when A phase is tested, luminotron LED4 does not work, and presses interrupt output button SB3, and stop A phase to test, check wiring, B phase, C phase connection mistake, method of operating is identical; Press stop button SB1, tester quits work.
7) test method of low-voltage cable, by p-wire and low-voltage cable one end exact connect ion, open tester by (3), press testing button SB4, pilot lamp is bright, output terminals A and produce about 220V voltage between B, C, 0 and be added between low-voltage cable conductor to be measured, after 5 minutes, reometer instruction is at below 10mA, voltage is without obviously falling, tester without short circuit sound and light alarm, prove A phase bus with between B phase, C phase and O line without unfavorable condition, can normally run.Other two-phase method of testings are identical with A phase.
Claims (3)
1. a low voltage switch box short circuit tester, comprises accumulator, fuse, power switch K, it is characterized in that: be also provided with the inverter U with short-circuit protection function, is connected on the first relay K 1 between inverter U bis-output terminals, warning recovery/stop button SB1, start button SB2 after being serially connected in power switch K successively and between earth terminal and there is the second relay K 2 of auto-lock function, the other end ground connection of described second relay K 2, time relay KJ after being serially connected in start button SB2 and between earth terminal, the time relay normally opened contact KJ-1 after being serially connected in start button SB2 successively and between earth terminal, the first relay normally open contact K1-1 and there is the 3rd relay K 3 of auto-lock function, be connected on interrupt output button SB3 and the luminous indicating circuit of interrupt output of the first relay normally open contact K1-1 output terminal respectively, luminous indicating circuit is tested with the A phase testing button SB4 of earth terminal and A phase after being serially connected in interrupt output button SB3 successively, the relay K A with auto-lock function after being serially connected in interrupt output button SB3 and between earth terminal, B phase testing button SB5 after being serially connected in interrupt output button SB3 successively and between earth terminal and B phase test luminous indicating circuit, the relay K B with auto-lock function after being serially connected in interrupt output button SB3 and between earth terminal, C phase testing button SB6 after being serially connected in interrupt output button SB3 successively and between earth terminal and C phase test luminous indicating circuit, the relay K C with auto-lock function after being serially connected in interrupt output button SB3 and between earth terminal, be connected on the time relay normally opened contact KJ-2 between inverter U bis-output terminals successively, reometer A and relay linkage contact sets, the voltage table V between inverter U bis-output terminals is connected on by time relay normally opened contact KJ-2, described relay linkage contact sets is by the interlock contact KA-1`2 of relay K A, the interlock contact KB-1`2 of relay K B and the interlock contact KC-1`2 of relay K C forms, the wherein interlock contact KA-1`2 of relay K A, the interlock contact KB-1`2 of relay K B, the interlock contact KC-1`2 of relay K C is made up of normally closed contact and normally opened contact respectively, two ends, three-group linkage contact are in parallel and mid point draws output terminals A respectively, B, C and O, the second relay normally open contact K2-4 is connected in inverter U start end, by the first relay normally closed contact K1-3 after described power switch K, 3rd relay normally open contact K3-3 is connected to sound light alarming circuit.
2. low voltage switch box short circuit tester according to claim 1, is characterized in that: be also provided with ac power input end, and ac power input end is connected with accumulator by step-down rectifier filter road circuit, is used for charging a battery.
3. low voltage switch box short circuit tester according to claim 1, is characterized in that: be connected to power indicating circuit after described power switch K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210079626.7A CN103323725B (en) | 2012-03-23 | 2012-03-23 | Low voltage switch box short circuit tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210079626.7A CN103323725B (en) | 2012-03-23 | 2012-03-23 | Low voltage switch box short circuit tester |
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| Publication Number | Publication Date |
|---|---|
| CN103323725A CN103323725A (en) | 2013-09-25 |
| CN103323725B true CN103323725B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210079626.7A Active CN103323725B (en) | 2012-03-23 | 2012-03-23 | Low voltage switch box short circuit tester |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109470960B (en) * | 2018-11-29 | 2021-04-27 | 中航通飞华南飞机工业有限公司 | Aircraft central authorities block terminal functional test device |
| RU191656U1 (en) * | 2019-03-20 | 2019-08-15 | Федеральное государственное автономное образовательное учреждение высшего образования "Южно-Уральский государственный университет (национальный исследовательский университет)" (ФГАОУ ВО "ЮУрГУ (НИУ)") | Experimental stand |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0679898A2 (en) * | 1994-04-30 | 1995-11-02 | Canon Kabushiki Kaisha | Insulation state measurement method for decentralized power generating system |
| CN2743845Y (en) * | 2004-05-05 | 2005-11-30 | 李振华 | Alarm for collector to ground short circuit |
| CN201429668Y (en) * | 2009-04-09 | 2010-03-24 | 北京清畅电力技术股份有限公司 | Panel type short-circuit and earthing fault indicator |
| CN101764550A (en) * | 2009-11-10 | 2010-06-30 | 贵阳永青仪电科技有限公司 | Integrated protection controller for wireless intelligent motor |
| CN102315623A (en) * | 2011-09-14 | 2012-01-11 | 山东一统电器有限公司 | Mining explosion-proof type long-distance short-circuit protecting device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU6220100A (en) * | 1999-07-20 | 2001-02-05 | General Electric Company | Short circuit detection method, apparatus and motor drive incorporating the same |
| US6900643B2 (en) * | 2003-08-06 | 2005-05-31 | Ballard Power Systems Corporation | Ride through in electronic power converters |
-
2012
- 2012-03-23 CN CN201210079626.7A patent/CN103323725B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0679898A2 (en) * | 1994-04-30 | 1995-11-02 | Canon Kabushiki Kaisha | Insulation state measurement method for decentralized power generating system |
| CN2743845Y (en) * | 2004-05-05 | 2005-11-30 | 李振华 | Alarm for collector to ground short circuit |
| CN201429668Y (en) * | 2009-04-09 | 2010-03-24 | 北京清畅电力技术股份有限公司 | Panel type short-circuit and earthing fault indicator |
| CN101764550A (en) * | 2009-11-10 | 2010-06-30 | 贵阳永青仪电科技有限公司 | Integrated protection controller for wireless intelligent motor |
| CN102315623A (en) * | 2011-09-14 | 2012-01-11 | 山东一统电器有限公司 | Mining explosion-proof type long-distance short-circuit protecting device |
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| CN103323725A (en) | 2013-09-25 |
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