CN104332087A - Circuit for testing during electrical control practical training of vocational college students - Google Patents
Circuit for testing during electrical control practical training of vocational college students Download PDFInfo
- Publication number
- CN104332087A CN104332087A CN201410638105.XA CN201410638105A CN104332087A CN 104332087 A CN104332087 A CN 104332087A CN 201410638105 A CN201410638105 A CN 201410638105A CN 104332087 A CN104332087 A CN 104332087A
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- circuit
- double
- voltage
- short
- contactor
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/183—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for circuits
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Algebra (AREA)
- Pure & Applied Mathematics (AREA)
- Educational Administration (AREA)
- Computational Mathematics (AREA)
- Business, Economics & Management (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention relates to a testing circuit, and belongs to the field of electrics. The purpose is realized in the following way: the device comprises a fuse, an electric leakage protector, an isolating transformer, a double-pole double-throw switch, an alternating contactor, a button and the like, and is characterized in that the electric leakage protector and the isolating transformer can prevent electric shock, wherein the double-pole double-throw switch can select in voltage 220 V and voltage 380 V according to different rated voltage of devices used by the students; when the tested circuit is short-circuited, a coil of the alternating contactor is meanwhile short-circuited, and no-voltage protection is performed by the alternating contactor to cut off power, so that accidents caused by short-circuiting of the tested circuit can be effectively prevented; alligator clips L1 and L2 can also be used for very conveniently connecting the circuit.
Description
Technical field
The present invention relates to a kind of test circuit, belong to electricity field.
Background technology
Electric control training is one of important Practical Teaching Links of professional colleges electromechanical speciality, in real training process, after student connects circuit according to circuit diagram, is all generally directly connect with the mains, tests, see whether its connection is correct.During test, if the circuit short circuit that student connects, large-area power-cuts will be caused, burn electrical equipment, even can cause life injures and deaths.Directly with the power supply test of Training Room, once go wrong, its consequence is well imagined.
Summary of the invention
The object of the invention is to, the circuit of test during a kind of student's electric control training of professional colleges is provided, be both convenient to student's test, and had earth leakage protection again, the accident that circuit-under-test short circuit causes can also be prevented.
The object of the present invention is achieved like this: this device is made up of fuse, earth leakage protective device, isolating transformer, double-point double-throw switch, A.C. contactor, button, pilot lamp etc., it is characterized in that: earth leakage protective device, isolating transformer can prevent from getting an electric shock; Double-point double-throw switch can be different according to the rated voltage of student's device used, select in 220V and 380V two kinds of voltages; When circuit-under-test short circuit, ac contactor coil is also shorted simultaneously, and A.C. contactor o-volt protection, cuts off the electricity supply, the accident that can effectively prevent circuit-under-test from causing because of short circuit; Crocodile clip L1, L2 connecting circuit is also very convenient.
Owing to adopting above-mentioned design proposal, the present invention has has advantage and good effect to be: safety, convenient, reliable.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Embodiment
Below in conjunction with schematic diagram, the specific embodiment of the present invention is further described.
As shown in Figure 1, FU is fuse; QF is single phase leakage braker; TC is a capacity is 50VA, and input voltage is 220V output voltage is 6.3V, 220V and 380V single transformer; KM1 is the A.C. contactor of CJ10-10,220V, 50HZ; KM2 is the A.C. contactor of CJ10-10,380V, 50HZ; SB is the button of LA-2; S is double-point double-throw switch; The pilot lamp of HL to be rated voltage be 6.3V.
The maximum feature of this circuit is safeguard protection and short-circuit protection.Owing to having had residual current circuit breaker and isolating transformer in circuit, can prevent tester from electric shock accidents occurring; The circuit that student connects there occurs short circuit; if with circuit test above; the control circuit part of circuit-under-test is connected to the output terminal of test circuit; press SB2, the circuit that student connects is once short circuit, and namely ac contactor coil is shorted; thus make A.C. contactor o-volt protection; cut off the electricity supply, neither have what accident, also can not cause large-area power failure.
There is the output voltage that 220V and 380V two kinds is different in addition, can be used for the circuit test that rated voltage is 220V and 380V two kinds of different electrical equipment respectively; Can know whether power supply is connected by pilot lamp HL; Crocodile clip L1, L2 connecting circuit is also very convenient.
Claims (1)
1. the circuit for testing in Vocational College Students electric control training process; be made up of elements such as fuse, earth leakage protective device, isolating transformer, double-point double-throw switch, A.C. contactor, button, pilot lamp; it is characterized in that: during with this circuit to the connection circuit test of the student of electric control training institute, safely, conveniently, reliably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410638105.XA CN104332087A (en) | 2014-10-31 | 2014-10-31 | Circuit for testing during electrical control practical training of vocational college students |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410638105.XA CN104332087A (en) | 2014-10-31 | 2014-10-31 | Circuit for testing during electrical control practical training of vocational college students |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104332087A true CN104332087A (en) | 2015-02-04 |
Family
ID=52406805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410638105.XA Pending CN104332087A (en) | 2014-10-31 | 2014-10-31 | Circuit for testing during electrical control practical training of vocational college students |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104332087A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ307610B6 (en) * | 2017-06-16 | 2019-01-09 | 1 - Ĺ kolab s.r.o. | Modular electronic protection demo panels powered by short-circuit proof low voltage power supplies |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2620903Y (en) * | 2003-01-11 | 2004-06-16 | 云南铜业技工学校 | Motor no-load, short-circuit training device |
| CN201110886Y (en) * | 2007-12-12 | 2008-09-03 | 中国神华能源股份有限公司 | Simulating load and multifunctional switch testing device |
| CN201965819U (en) * | 2010-09-03 | 2011-09-07 | 朱永迪 | Programmable logic controller (PLC) experiment cabinet |
| CN102749581A (en) * | 2012-07-27 | 2012-10-24 | 苏州贝腾特电子科技有限公司 | Test device |
| CN203433092U (en) * | 2013-08-15 | 2014-02-12 | 郭海强 | Multifunctional detection bench for mining switches |
| CN203588542U (en) * | 2013-11-18 | 2014-05-07 | 河北科技大学 | Double-position electrical and electronic test bed |
| CN203825915U (en) * | 2014-05-09 | 2014-09-10 | 常州信息职业技术学院 | Digital-control maintenance practical training system with complete protection measure |
-
2014
- 2014-10-31 CN CN201410638105.XA patent/CN104332087A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2620903Y (en) * | 2003-01-11 | 2004-06-16 | 云南铜业技工学校 | Motor no-load, short-circuit training device |
| CN201110886Y (en) * | 2007-12-12 | 2008-09-03 | 中国神华能源股份有限公司 | Simulating load and multifunctional switch testing device |
| CN201965819U (en) * | 2010-09-03 | 2011-09-07 | 朱永迪 | Programmable logic controller (PLC) experiment cabinet |
| CN102749581A (en) * | 2012-07-27 | 2012-10-24 | 苏州贝腾特电子科技有限公司 | Test device |
| CN203433092U (en) * | 2013-08-15 | 2014-02-12 | 郭海强 | Multifunctional detection bench for mining switches |
| CN203588542U (en) * | 2013-11-18 | 2014-05-07 | 河北科技大学 | Double-position electrical and electronic test bed |
| CN203825915U (en) * | 2014-05-09 | 2014-09-10 | 常州信息职业技术学院 | Digital-control maintenance practical training system with complete protection measure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ307610B6 (en) * | 2017-06-16 | 2019-01-09 | 1 - Ĺ kolab s.r.o. | Modular electronic protection demo panels powered by short-circuit proof low voltage power supplies |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150204 |