CN103323725A - Low voltage switch box short circuit tester - Google Patents
Low voltage switch box short circuit tester Download PDFInfo
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- CN103323725A CN103323725A CN2012100796267A CN201210079626A CN103323725A CN 103323725 A CN103323725 A CN 103323725A CN 2012100796267 A CN2012100796267 A CN 2012100796267A CN 201210079626 A CN201210079626 A CN 201210079626A CN 103323725 A CN103323725 A CN 103323725A
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- short circuit
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Abstract
The invention provides a low voltage switch box short circuit tester which is accurate in test result and capable of judging whether a low voltage switch box can be normally powered on for operation. The low voltage switch box short circuit tester prevents the situations that when the low voltage switch box is powered on, a short circuit causes equipment burning, electric arc burn and person electrification, and guarantees operational safety. The low voltage switch box short circuit tester comprises a storage battery, a power switch, an inverter, a first relay, an alarm restoration/stop button, a start button, a second relay, a time relay, a time relay normally open contact KJ-1, a first relay normally open contact K1-1, a third relay, an output interrupting button, an A-phase test button, a relay KA, a B-phase test button, a relay KB, a C-phase test button, a relay KC, a voltmeter, an ampere meter, a linkage contact KA-1'2, a linkage contact KB-1'2, a linkage contact KC-1'2 and a second relay normally open contact K2-4, wherein the inverter has a short-circuit protection function, the first relay is arranged between the inverter and an output device, the voltmeter is connected with the output end of the inverter, and the power switch is connected with a sound-light alarm circuit through a first relay normally-closed contact K1-3 and a third relay normally open contact K3-3.
Description
Technical field
The present invention relates to a kind of low-voltage distribution cabinet short circuit tester.
Background technology
After AC low voltage power switch box and low-voltage cable fabrication and installation are finished, before preparing to send electricity, because the secondary circuits such as operation, measurement, metering are arranged, directly can't measure with megohmmeter or multimeter and judge that can it normal power-up operation.Cause equipment burnout, electric arc burn, personnel's electrification when sending electricity.
Summary of the invention
It is accurate that the technical problem to be solved in the present invention provides a kind of test result, can judge can normal power-up the low-voltage distribution cabinet short circuit tester of operation, cause equipment burnout, electric arc burn, personnel's electrification because of short circuit when preventing from sending electricity, guarantee handling safety.
The low-voltage distribution cabinet short circuit tester that the present invention relates to comprises accumulator E, fuse F, power switch K, and its special character is: also be provided with the inverter U with short-circuit protection function, be connected on the first relay K 1 between the inverter U follower; Be serially connected in warning recovery/stop button SB1, start button SB2 after the power switch K, have the second relay K 2 of auto-lock function; Be connected on the time relay KJ after the start button SB2, the time relay normally opened contact KJ-1 of serial connection, the first relay normally open contact K1-1 and have the 3rd relay K 3 of auto-lock function; Be connected on respectively interrupt output button SB3 and the luminous indicating circuit of interrupt output of the first relay normally open contact K1-1 output terminal, be connected on the relay K A that interrupt output button SB3 A phase testing button SB4 and A afterwards tests mutually luminous indicating circuit, has auto-lock function, B phase testing button SB5 and B test mutually luminous indicating circuit, have the relay K B of auto-lock function, and C phase testing button SB6 and C test mutually luminous indicating circuit, have the relay K C of auto-lock function; Be connected on the voltage table V of inverter U output terminal by time relay normally opened contact KJ-2, the reometer A of series connection, 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, the interlock contact KA-1`2 of relay K A wherein, the interlock contact KB-1`2 of relay K B, the interlock contact KC-1`2 of relay K C is comprised of normally closed contact and normally opened contact respectively, the two ends parallel connection of three-group linkage contact and mid point are drawn respectively output terminals A, B, C and O, be connected to the second relay normally open contact K2-4 in inverter U start end, pass through the first relay normally closed contact K1-3 after the described power switch K, the 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 links to each other with accumulator E by step-down rectifier filter road circuit, is used for accumulators E to charge.
Be connected to power indicating circuit after the described power switch K.
This tester is by converting the 12V DC voltage to power frequency 220V alternating voltage (peak value 400V, sinusoidal wave), directly be added on low-voltage cabinet main bus-bar or the cable conductor, test by a period of time, electric current is below 10mA, voltage proves that without obviously falling or the short circuit sound and light alarm this equipment can the normal power-up operation.Simultaneously, because of this tester power supply transfer power about 400W, can finish low-tension switch cabinet electric operating and measuring circuit the test.Test result is accurate, can judge can normal power-up the low-voltage distribution cabinet short circuit tester of operation, cause equipment burnout, electric arc burn, personnel's electrification because of short circuit when preventing from sending electricity, guarantee handling safety.
Description of drawings
Fig. 1 is circuit theory diagrams of the present invention.
Embodiment
As shown in the figure, this tester comprises the accumulator E that is cascaded, fuse F, power switch K have the 12V direct current is become the inverter U that 220V exchanged and had short-circuit protection function, are connected on after the described power switch K and the power indicating circuit between the earth terminal; Be connected on the first relay (AC relay) K1 between the inverter U follower, be connected on after the power switch K and earth terminal between warning recovery/stop button SB1, start button SB2, have the second relay K 2 of auto-lock function; Be connected on after the start button SB2 and earth terminal between time relay KJ, the time relay normally opened contact KJ-1 of series connection, the first relay normally open contact K1-1 and have the relay K 3 of auto-lock function; Be connected on respectively after the first relay normally open contact K1-1 and interrupt output button SB3 and the luminous indicating circuit of interrupt output between the earth terminal, be connected on the relay K A that A phase testing button SB4 and A between interrupt output button SB3 and the earth terminal tests mutually luminous indicating circuit, has auto-lock function, B phase testing button SB5 and B test mutually luminous indicating circuit, have the relay K B of auto-lock function, and C phase testing button SB6 and C test mutually luminous indicating circuit, have the relay K C of auto-lock function; Be connected on the voltage table V of inverter U output terminal by time relay normally opened contact KJ-2, the interlock contact KC-1`2 of interlock contact KB-1`2, the relay K C of interlock contact KA-1`2, the relay K B of reometer A, the relay K A of series connection, wherein link contact KA-1`-2, interlock contact KB-1`2, interlock contact KC-1`2 two ends parallel connection and mid point drawn respectively output terminals A, B, C and O, is connected to the normal contact K2-4 of the second relay in inverter U start end.Described warning recovery/stop button SB1 and interrupt output button SB3 are normally closed button.
Be connected to sound light alarming circuit 5 by the first relay normally closed contact K1-3, the 3rd relay normally open contact K3-3 after the described power switch K.
This tester also is provided with ac power input end 1, be connected to the step-down rectifier filter road circuit 2 that is formed by transformer, commutator tube D1-4 and capacitor C 1 at described ac power input end 1, step-down rectifier filter road circuit 2 output terminals link to each other with accumulator E with capacitor C 2 by diode D5, are used for accumulators E to charge; Circuit 2 output terminals also are provided with charging indication 3 by diode D5 and capacitor C 2 on step-down rectifier filter road.
The second relay K 2 of described auto-lock function, the 3rd relay K 3, relay K A, relay K B, relay K C realize by normally opened contact K2-1, K3-1, KA-4, KB-4, KC-4 respectively.
Described charging indication is that resistance R 7 and luminotron LED7 form, power indicating circuit is comprised of luminotron LED1 and resistance R 1, described sound light alarming circuit forms by raising ring device 2, luminescent device 3, luminotron LED3 and resistance R 3, and described A phase～C tests mutually luminous indicating circuit and is comprised of luminotron LED2 and resistance R 2, luminotron LED4 and resistance R 4, luminotron LED5 and resistance R 5, luminotron LED6 and resistance R 6 respectively.
Method of operating is as follows:
1) low-voltage distribution cabinet or the cable disconnect to need measured are connected such as motor, electrical appliance etc. with consumer with power-supply device (such as transformer, engine etc.)) be connected affirmation power-supply device and consumer and need disconnect fully by testing equipment.
2) p-wire and measured switch cabinet main bus-bar or the cable conductor order by A, B, C, O reliably is connected, simultaneously the other end of p-wire is connected on corresponding output end A, B, C, the O of tester, check whether wiring is correct reliable.
3) turn on the power switch K, press start button SB2, tester starts operation, 2 adhesives of the second relay K and self-locking, time relay KJ begins timing, and normally opened contact K2-4 closes, and inverter U starts, output 220V voltage, 1 adhesive of the first relay K, normally opened contact K1-1 closes, and normally opened contact KJ-1, KJ-2 close after 10 seconds, relay K 3 adhesives and self-locking, normally opened contact K3-3 closes but normally closed contact K1-3 disconnects, and checks that voltage table V pointer is whether between the 200V-240V, in this way, the 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 and self-locking, interlock contact KA-1`2 is left disconnected right logical, produce 220V left and right sides voltage between output terminals A and B, the C, 0 and be added between low-voltage bus bar to be measured, after 1 minute, reometer is indicated below 10mA, voltage is without obviously falling, tester is without the short circuit sound and light alarm, proves that A phase bus and B phase, C reach between the O line mutually without bad situation, can normally move.Other two-phase method of testings are mutually identical with A.If electricity-measuring meter is installed in the low-voltage distribution cabinet, reometer is indicated 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 powers up to A, B, C phase bus, the main existing electricity of cabinet pilot lamp display device that is subjected to, by sending electric step to operate each electric operating switch, check whether itself and separating brake be normal.
6) when there is short circuit in equipment under test, the inverter U non-output signal that quits work, relay K 1 dead electricity, normally closed contact K1-3 closes, and sound light alarming circuit work is reported to the police; When A phase connection mistake, when A tested mutually, luminotron LED4 did not work, and pressed interrupt output button SB3, stopped A and tested mutually, checked wiring, B phase, C phase connection mistake, and method of operating is identical; Press stop button SB1, tester quits work.
7) test method of low-voltage cable, p-wire and low-voltage cable one rectified really is connected, press (3) unlatching tester, press testing button SB4, pilot lamp is bright, produce 220V left and right sides voltage between output terminals A and B, the C, 0 and be added between low-voltage cable conductor to be measured, after 5 minutes, reometer is indicated below 10mA, voltage is without obviously falling, tester is without the short circuit sound and light alarm, proves that A phase bus and B phase, C reach between the O line mutually without bad situation, can normally move.Other two-phase method of testings are mutually identical with A.
Claims (3)
1. a low-voltage distribution cabinet short circuit tester comprises accumulator, and fuse, power switch is characterized in that: also be provided with the inverter with short-circuit protection function, be connected on the first relay between the inverter follower; Be serially connected in warning recovery/stop button, start button after the power switch, have the second relay of auto-lock function; Be connected on the time relay after the start button, the time relay normally opened contact KJ-1 of serial connection, the first relay normally open contact K1-1 and have the 3rd relay of auto-lock function; Be connected on respectively interrupt output button and the luminous indicating circuit of interrupt output of the first relay normally open contact K1-1 output terminal, be connected on the relay K A that interrupt output button A phase testing button and A afterwards tests mutually luminous indicating circuit, has auto-lock function, B phase testing button and B test mutually luminous indicating circuit, have the relay K B of auto-lock function, and C phase testing button and C test mutually luminous indicating circuit, have the relay K C of auto-lock function; Be connected on the voltage table of inverter output end by time relay normally opened contact KJ-2, the reometer of series connection, 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, the interlock contact KA-1`2 of relay K A wherein, the interlock contact KB-1`2 of relay K B, the KC-1`2 two ends parallel connection of interlock contact and the mid point of relay K C are drawn respectively output terminals A, B, C and O, in the inverter startup termination the second relay normally open contact K2-4 is arranged, pass through the first relay normally closed contact K1-3 after the described power switch, the 3rd relay normally open contact K3-3 is connected to sound light alarming circuit.
2. low-voltage distribution cabinet short circuit tester according to claim 1 is characterized in that: also be provided with ac power input end, ac power input end links to each other with accumulator by step-down rectifier filter road circuit, is used for charging a battery.
3. low-voltage distribution cabinet short circuit tester according to claim 1 is characterized in that: be connected to power indicating circuit after the described power switch.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103323725A true CN103323725A (en) | 2013-09-25 |
| CN103323725B CN103323725B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210079626.7A Active CN103323725B (en) | 2012-03-23 | 2012-03-23 | Low voltage switch box short circuit tester |
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| CN (1) | CN103323725B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470960A (en) * | 2018-11-29 | 2019-03-15 | 中航通飞华南飞机工业有限公司 | A kind of aircraft central power distribution box device for testing functions |
| 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 (7)
| 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 |
| WO2001006272A1 (en) * | 1999-07-20 | 2001-01-25 | General Electric Company | Short circuit detection method, apparatus and motor drive incorporating the same |
| US20050030045A1 (en) * | 2003-08-06 | 2005-02-10 | Ballard Power Systems Corporation | Ride through in electronic power converters |
| 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 |
-
2012
- 2012-03-23 CN CN201210079626.7A patent/CN103323725B/en active Active
Patent Citations (7)
| 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 |
| WO2001006272A1 (en) * | 1999-07-20 | 2001-01-25 | General Electric Company | Short circuit detection method, apparatus and motor drive incorporating the same |
| US20050030045A1 (en) * | 2003-08-06 | 2005-02-10 | Ballard Power Systems Corporation | Ride through in electronic power converters |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109470960A (en) * | 2018-11-29 | 2019-03-15 | 中航通飞华南飞机工业有限公司 | A kind of aircraft central power distribution box device for testing functions |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN103323725B (en) | 2016-03-30 |
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