CN202939879U - Electrician training device grounded and additionally provided with leakage circuit breaker - Google Patents
Electrician training device grounded and additionally provided with leakage circuit breaker Download PDFInfo
- Publication number
- CN202939879U CN202939879U CN 201220585338 CN201220585338U CN202939879U CN 202939879 U CN202939879 U CN 202939879U CN 201220585338 CN201220585338 CN 201220585338 CN 201220585338 U CN201220585338 U CN 201220585338U CN 202939879 U CN202939879 U CN 202939879U
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- switch
- earth leakage
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Abstract
The utility model discloses an electrician training device grounded and additionally provided with a leakage circuit breaker for electrician training. The device comprises an isolation transformer, a leakage protector and a motor; the isolation transformer is externally connected with commercial power and outputs the commercial power to the motor; in the output loop, a second amperemeter (A2) is connected in series, a second voltmeter (V2) is connected in parallel, the leakage protector (e) for controlling a leakage switch is connected, a closing switch circuit (d) across the leakage protector (e) is also arranged, and the motor shell is provided with a contact resistor (a) and a grounding line; and in the grounding line, a grounding switch (c), a protection resistor (b) and a first amperemeter (A1) are connected in series, and a first voltmeter (V1) is connected in parallel between the motor shell and the ground. According to the training device, electrician trainers can know the functions of the leakage protection device and the importance of grounding, and simultaneously for safety, the isolation transformer is connected at the input end, thereby playing a protection role and avoiding occurrence of accidents.
Description
Technical field
The utility model relates to a kind of equipment ground and installs electrician's training set of residual current circuit breaker additional.
Background technology
Installing earth leakage protective device and device housings reliable ground are one of major measure of the protection person and device security.Annual cause the dead overwhelming majority to be all because do not install earth leakage protective device and device housings cannot not cause with being abutted against because of electric shock.
Therefore, installing earth leakage protective device and be the important content that the electrician trains by the device housings reliable ground.
The utility model content
Technical problem to be solved in the utility model, just be to provide a kind of simple in structure, safe equipment ground and install electrician's training set of residual current circuit breaker additional.
Solve the problems of the technologies described above, the technical solution adopted in the utility model is as follows:
A kind of equipment ground and install electrician's training set of residual current circuit breaker additional, it is characterized in that: comprise isolating transformer, earth leakage protective device and motor, the external civil power of described isolating transformer also exports motor to, on output loop: be in series with the second reometer, be parallel with the second voltage table, and be connected to the earth leakage protective device of controlling leakage switch, also be provided with the closing switch circuit that strides across earth leakage protective device, described motor housing is provided with contact resistance and ground wire, on ground wire: be serially connected with grounding switch, protective resistance and the first reometer, be parallel with the first voltage table between motor housing and the earth.
The effect of isolating transformer is that residential electricity consumption is kept apart; make device become an independently power supply; even if the student touches the electric leakage part; can not cause Danger Electric shock risk yet; the earth leakage protective device parallel connection one group of air switch; fundamental purpose is to simulate a kind of situation when earth leakage protective device is not installed; motor and annex are main demonstration parts; reometer A1 mainly measures leakage current; can regulate leakage current value by adjustable resistance; what voltage table V1 showed is the electrical leakage voltage value, the charged a kind of precarious position of device housings when showing that equipment is unearthed.
Beneficial effect: by this training set, can allow the student clearly know the importance of installing earth leakage protection and equipment ground, also allow the student learn how correctly to install earth leakage protection and grounding technology simultaneously.
The accompanying drawing explanation
The composition that Fig. 1 is the utility model embodiment and connection diagram.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
As shown in the figure, the equipment ground of this device and install electrician's training set of residual current circuit breaker additional, comprise isolating transformer, earth leakage protective device and motor, the external civil power of isolating transformer also exports motor to, on output loop: be in series with the second reometer A2, be parallel with second voltage Table V 2, and be connected to the earth leakage protective device e that is controlling leakage switch, also be provided with the closing switch circuit d that strides across earth leakage protective device, motor housing is provided with contact resistance a and ground wire, on ground wire: be serially connected with grounding switch c, protective resistance b and the first reometer A1, be parallel with the first voltage table V1 between motor housing and the earth.
Training process:
1, do not add the earth leakage protective device demonstration
Motor housing does not have under Grounding, disconnects earth leakage protective device e, and the d that closes a switch now shows electrical leakage voltage with the V1 voltage table, is about 220V, and available band electroprobe is measured shell to be shown with voltage, and motor is in a kind of precarious position.The ground cutter c that then closes, electrical leakage voltage V1 is zero volt, and reometer A1 has leakage current (can be regulated by adjustable resistance b), and reometer A2 current value increases.The purpose of this demonstration is that earth leakage protective device and motor housing a kind of precarious position when unearthed be not installed.
2, add earth leakage protective device and equipment ground demonstration
Motor housing does not have under Grounding, cut-off switch d, and the earth leakage circuit-breaker e that closes, now motor starts rotation, and because electrical leakage voltage contact motor housing is arranged, electrical leakage voltage V1 is 220V, and leakage current Table V 1 reading is zero.The c that then closes a switch, by regulating adjustable resistance b, when reaching the action current of leakage current, earth leakage protection action, motor stalling.The purpose that this demonstration reaches allows the student know the importance that earth leakage protective effect and motor housing ground connection are installed.
Claims (1)
1. an equipment ground and install electrician's training set of residual current circuit breaker additional, it is characterized in that: comprise isolating transformer, earth leakage protective device and motor, the external civil power of described isolating transformer also exports motor to, on output loop: be in series with the second reometer (A2), be parallel with second voltage table (V2), and be connected to the earth leakage protective device (e) of controlling leakage switch, also be provided with the closing switch circuit (d) that strides across earth leakage protective device, described motor housing is provided with contact resistance (a) and ground wire, on ground wire: be serially connected with grounding switch (c), protective resistance (b) and the first reometer (A1), be parallel with the first voltage table (V1) between motor housing and the earth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220585338 CN202939879U (en) | 2012-11-08 | 2012-11-08 | Electrician training device grounded and additionally provided with leakage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220585338 CN202939879U (en) | 2012-11-08 | 2012-11-08 | Electrician training device grounded and additionally provided with leakage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202939879U true CN202939879U (en) | 2013-05-15 |
Family
ID=48324106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220585338 Expired - Lifetime CN202939879U (en) | 2012-11-08 | 2012-11-08 | Electrician training device grounded and additionally provided with leakage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202939879U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106920444A (en) * | 2017-04-30 | 2017-07-04 | 国网江苏省电力公司职业技能训练基地 | A kind of equipment of analog line single-phase earthing |
| CN109449879A (en) * | 2018-12-17 | 2019-03-08 | 陈军 | A kind of traffic lights earth leakage protective device and its method |
| RU198422U1 (en) * | 2020-05-15 | 2020-07-07 | Джамиль Джониевич Бабаев | Device for demonstrating the rule of the left hand |
-
2012
- 2012-11-08 CN CN 201220585338 patent/CN202939879U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106920444A (en) * | 2017-04-30 | 2017-07-04 | 国网江苏省电力公司职业技能训练基地 | A kind of equipment of analog line single-phase earthing |
| CN109449879A (en) * | 2018-12-17 | 2019-03-08 | 陈军 | A kind of traffic lights earth leakage protective device and its method |
| RU198422U1 (en) * | 2020-05-15 | 2020-07-07 | Джамиль Джониевич Бабаев | Device for demonstrating the rule of the left hand |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130515 |