CN203950483U - Earth fault Practical teaching device - Google Patents
Earth fault Practical teaching device Download PDFInfo
- Publication number
- CN203950483U CN203950483U CN201420348950.9U CN201420348950U CN203950483U CN 203950483 U CN203950483 U CN 203950483U CN 201420348950 U CN201420348950 U CN 201420348950U CN 203950483 U CN203950483 U CN 203950483U
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- CN
- China
- Prior art keywords
- switch
- leakage
- lamp socket
- key switch
- earth fault
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model relates to a kind of earth fault Practical teaching device, it is characterized in that: leakage switch (2), An Key switch (3), lamp socket (4) and incandescent lamp (5) are arranged on base plate (1), the input end of 220V power supply access leakage switch (2), the output terminal Tong Guo of leakage switch (2) connects lamp socket (4) An Key switch (3), incandescent lamp (5) is set on lamp socket (4), An one end of wherein access using one cable wire wound variable resistor (6) of Key switch (3) outgoing line side, one end of another termination reometer (7) of wire wound variable resistor (6), the zero line of the other end of reometer (7) and leakage switch (2) inlet wire side joins.The utility model has reproduced the true process of electric leakage ground connection, can make real training personnel grasp conventional method and the step of searching electric leakage earth fault, is applicable to power supply station, industrial enterprise, property plots maintenance electrician's on-site training.
Description
Technical field
The utility model belongs to power training device technique field, relates in particular to a kind of earth fault Practical teaching device that various training organizations, power supply station carry out earth fault demonstration that is applicable to.
Background technology
Current; resident's home household appliance and circuit operation are for many years; line insulation performance does not reach rules regulation; in addition resident's RCD all puts into operation in recent years; leakage tripping faults frequent occurs; scene rush to repair personnel need carry out system training, the method for grasping leak current fault tripping operation principle and fixing a breakdown.But the device that there is no now a kind of applicable earth fault practice-training teaching, in the urgent need to developing a kind of simple, easy-to-use earth fault actual training device.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned drawback, a kind of earth fault Practical teaching device is provided, realizing the technical scheme that originally practical object is taked is: a kind of earth fault Practical teaching device, include base plate, leakage switch, An Key switch, lamp socket and incandescent lamp, it is characterized in that: leakage switch, An Key switch, lamp socket and incandescent lamp are arranged on base plate, the input end of 220V power supply access leakage switch, the output terminal Tong Guo of leakage switch connects lamp socket An Key switch, incandescent lamp is set on lamp socket, An variable-resistance one end of wherein access using one cable wire wound of Key switch outgoing line side, one end of variable-resistance another termination reometer of wire wound, the zero line of the other end of reometer and leakage switch inlet wire side joins.During test, switch on power, change gradually the variable-resistance resistance sizes of wire wound, observe reometer reading, when current indication surpasses the specified residue leakage current of leakage switch, electric leakage switch tripping, can utilize pincerlike electric current demonstration how to search leakage current simultaneously.
The utility model has reproduced the true process of electric leakage ground connection, can make real training personnel grasp conventional method and the step of searching electric leakage earth fault, this actual training device is easy to carry, simple in structure, be applicable to power supply station, industrial enterprise, property plots maintenance electrician's on-site training.
Accompanying drawing explanation
Fig. 1 is electric theory structure schematic diagram of the present utility model;
Fig. 2 is the structural representation of the utility model teaching experiment board.
In figure, 1, base plate, 2, leakage switch, 3, are Aned Key switch, and 4, lamp socket, 5, incandescent lamp, 6, wire wound variable resistor, 7, reometer.
Embodiment
With reference to accompanying drawing, a kind of earth fault Practical teaching device, include base plate 1, leakage switch 2, An Key switch 3, lamp socket 4 and incandescent lamp 5, it is characterized in that: leakage switch 2, An Key switch 3, lamp socket 4 and incandescent lamp 5 are arranged on base plate 1, the input end of 220V power supply access leakage switch 2, the output terminal Tong Guo of leakage switch 2 connects lamp socket 4 An Key switch 3, incandescent lamp 5 is set on lamp socket 4, An one end of wherein access using one cable wire wound variable resistor 6 of Key switch 3 outgoing line sides, one end of another termination reometer 7 of wire wound variable resistor 6, the zero line of the other end of reometer 7 and leakage switch 2 inlet wire sides joins.During test, switch on power, change gradually the resistance sizes of wire wound variable resistor 6, observe reometer 7 readings, when current indication surpasses the specified residue leakage current of leakage switch, leakage switch 2 tripping operations, can utilize pincerlike electric current demonstration how to search leakage current simultaneously.
Claims (1)
1. an earth fault Practical teaching device, include base plate (1), leakage switch (2), An Key switch (3), lamp socket (4) and incandescent lamp (5), it is characterized in that: leakage switch (2), An Key switch (3), lamp socket (4) and incandescent lamp (5) are arranged on base plate (1), the input end of 220V power supply access leakage switch (2), the output terminal Tong Guo of leakage switch (2) connects lamp socket (4) An Key switch (3), incandescent lamp (5) is set on lamp socket (4), An one end of wherein access using one cable wire wound variable resistor (6) of Key switch (3) outgoing line side, one end of another termination reometer (7) of wire wound variable resistor (6), the zero line of the other end of reometer (7) and leakage switch (2) inlet wire side joins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420348950.9U CN203950483U (en) | 2014-06-27 | 2014-06-27 | Earth fault Practical teaching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420348950.9U CN203950483U (en) | 2014-06-27 | 2014-06-27 | Earth fault Practical teaching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203950483U true CN203950483U (en) | 2014-11-19 |
Family
ID=51892508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420348950.9U Expired - Fee Related CN203950483U (en) | 2014-06-27 | 2014-06-27 | Earth fault Practical teaching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203950483U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575203A (en) * | 2015-01-06 | 2015-04-29 | 国家电网公司 | Three-level residual current operated protection simulated practice training system |
-
2014
- 2014-06-27 CN CN201420348950.9U patent/CN203950483U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575203A (en) * | 2015-01-06 | 2015-04-29 | 国家电网公司 | Three-level residual current operated protection simulated practice training system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20150627 |
|
| EXPY | Termination of patent right or utility model |