CN110376441A - A kind of earth resistance analog training device - Google Patents
A kind of earth resistance analog training device Download PDFInfo
- Publication number
- CN110376441A CN110376441A CN201910810098.XA CN201910810098A CN110376441A CN 110376441 A CN110376441 A CN 110376441A CN 201910810098 A CN201910810098 A CN 201910810098A CN 110376441 A CN110376441 A CN 110376441A
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- Prior art keywords
- resistance
- pole
- resistor
- binding post
- electrically connected
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- 238000012549 training Methods 0.000 title claims abstract description 25
- 239000011159 matrix material Substances 0.000 claims abstract description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- 230000006870 function Effects 0.000 description 6
- 206010052804 Drug tolerance Diseases 0.000 description 3
- 230000026781 habituation Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/20—Measuring earth resistance; Measuring contact resistance, e.g. of earth connections, e.g. plates
-
- 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
- G09B19/00—Teaching not covered by other main groups of this subclass
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Engineering & Computer Science (AREA)
- Entrepreneurship & Innovation (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses a kind of earth resistance analog training devices, packet resistor matrix, the pole C binding post, the pole P binding post, the pole E binding post, first resistor, second resistance, the code switch group with short-circuit function, one end of the pole C binding post are electrically connected with the pole the C interface of earth resistance tester；One end of the pole P binding post is electrically connected with the pole the P interface of earth resistance tester；One end of the pole E binding post is electrically connected with the pole the E interface of earth resistance tester；The other end of the pole C binding post is electrically connected with one end of first resistor；The other end of the pole P binding post is electrically connected with one end of second resistance；The other end of the pole E binding post is electrically connected with one end of resistor matrix；The other end of resistor matrix, the other end of first resistor, second resistance the other end be electrically connected jointly；The resistance value of resistor matrix is adjusted by the code switch group with short-circuit function.
Description
Technical field
The present invention relates to earth resistance fields, more particularly, to a kind of earth resistance analog training device.
Background technique
In actual operation, it is often necessary to the ground resistances such as measuring transformer neutral point, steel tower, arrester ground.Correctly
With the ground resistance of earth resistance tester measurement grounding body, it is one of power industry basic skills, is the member of related fields
The technical ability that work must be grasped skillfully.Electrical employee orientation, technical ability sports, examination, post are competent at competence test and require to examine
Core this technical ability.
Currently, common current voltmeter method (i.e. three electrode method) measurement of Grounding Resistance measures.Wherein, potential probes P and
Current probe C is respectively 20m and 40m away from grounding body E.This requires the practical places with 40 meters or more width just can be carried out training
Instruction or examination.In addition, practicing outdoors or the test of ground resistance being examined to influence vulnerable to weather.
Although currently, existing earth resistance analog training device can accomplish it is intensive, miniaturization, they
Resistance precision it is insufficient, settable range only has the resistance value of a small amount of fixed gear, and ground resistance can not more accurately be arranged, hold
The mechanism for easily start-up's habituation being allowed to misread number, causing training effect poor, and switch resistance value is the combination of several switches,
It operates not intuitive enough.
Summary of the invention
The present invention overcomes above-mentioned existing technical deficiencies, provide a kind of new earth resistance analog training device.
The present invention avoids contact with humid air, it is not easy to couple corrosion occur by hiding copper aluminum contact surface inside online ear.
In order to solve the above technical problems, technical scheme is as follows:
A kind of earth resistance analog training device, is electrically connected with earth resistance tester, including resistor matrix, the pole C
Binding post, the pole P binding post, the pole E binding post, first resistor, second resistance, the code switch group with short-circuit function, wherein
One end of the pole the C binding post is electrically connected with the pole the C interface of earth resistance tester；
One end of the pole the P binding post is electrically connected with the pole the P interface of earth resistance tester；
One end of the pole the E binding post is electrically connected with the pole the E interface of earth resistance tester；
The other end of the pole the C binding post is electrically connected with one end of first resistor；
The other end of the pole the P binding post is electrically connected with one end of second resistance；
The other end of the pole the E binding post is electrically connected with one end of resistor matrix；
The other end of the resistor matrix, the other end of first resistor, second resistance the other end be electrically connected jointly；
The resistance value of the resistor matrix is adjusted by the code switch group with short-circuit function, resistor matrix with
Code switch group electrical connection with short-circuit function.
The course of work of the invention: earth resistance analog training device is electrically connected with earth resistance tester, is led to
The short-circuit function for pressing code switch group is crossed, the resistance value of resistor matrix is adjusted, so that the common point of first resistor, second resistance
Resistor matrix is accessed between the binding post of the pole E to obtain different resistance values, to simulate the earthing pole electricity of all kinds of controller switching equipments
Resistance value.
In a preferred solution, the resistor matrix includes resistance 9 of 0.01 Europe, the resistance in 0.1 Europe 9, and 1
The resistance in Europe 9, the resistance in 10 Europe 9, the resistance in 100 Europe 9, above-mentioned whole resistance form resistor matrix, resistance value
Variation range is [0,999.99] Europe.
This preferred embodiment effectively increases the precision of earth resistance analog training device, and precision reaches 0.01 Europe.
In a preferred solution, the resistance in the resistor matrix is all aluminum casing resistor.
In this preferred embodiment, aluminum casing resistor have volume small-power it is big, high temperature resistant, overload capacity have by force against weather,
High-precision feature belongs to low inductive reactance, high stability and strong architectural, is conducive to mechanical protection, conveniently installs and uses.
In a preferred solution, the model of aluminum casing resistor is RX24.
In a preferred solution, the code switch group with short-circuit function is PF44 digital switch.
In this preferred embodiment, the pressure-resistant 500V or more of PF44 digital switch, interface is that the pressing coding of the import of 0-9 is opened
It closes.
In a preferred solution, the resistance value of the first resistor is equal to second resistance.
In a preferred solution, the resistance value of the first resistor is 500 Europe.
In a preferred solution, the earth resistance analog training device further includes shell, the electricity
Resistance matrix, the pole C binding post, the pole P binding post, the pole E binding post, first resistor, second resistance and the coding with short-circuit function are opened
Pass group is arranged on shell, is fixedly connected with the casing.
In a preferred solution, the shell offers ventilating groove.
Compared with prior art, the beneficial effect of technical solution of the present invention is:
1, human-computer interaction interface is improved, the operation interface for switching resistance value is more intuitive, convenient；
2, the accuracy for improving the setting of ground resistance resistance value, avoids start-up's habituation and misreads number.
Detailed description of the invention
Fig. 1 is the main view of embodiment.
Fig. 2 is the top view of embodiment.
Fig. 3 is the circuit diagram of embodiment.
Fig. 4 is the electrical connection graph of embodiment and earth resistance tester.
Fig. 5 is the circuit connection diagram of resistor matrix in embodiment.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；
In order to better illustrate this embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent actual product
Size；
To those skilled in the art, it is to be understood that certain known features and its explanation, which may be omitted, in attached drawing
's.
The following further describes the technical solution of the present invention with reference to the accompanying drawings and examples.
Embodiment
As shown in FIG. 1 to 3, a kind of earth resistance analog training device, including
Resistor matrix, the pole C binding post, the pole P binding post, the pole E binding post, first resistor Rc, second resistance Rp, HAMPOLT
PF44 toggle switch and shell, wherein
Resistor matrix, the pole C binding post, the pole P binding post, the pole E binding post, first resistor Rc, second resistance Rp and PF44 are dialled
Code switch group is fixedly connected with the casing, and the ventilating groove for heat dissipation is offered on shell；
The resistance value of first resistor Rc and second resistance Rp are all 500 Europe；
The other end of the pole C binding post is electrically connected with one end of first resistor Rc；
The other end of the pole P binding post is electrically connected with one end of second resistance Rp；
The other end of the pole E binding post is electrically connected with one end of resistor matrix；
The other end of resistor matrix, the other end of first resistor Rc, second resistance Rp the other end have common point G；
Resistor matrix is electrically connected with PF44 toggle switch.
Resistor matrix includes 45 pressure resistance 500V or more, and the RX24 aluminum casing resistor of resistance value tolerance 1% is 0.01 Europe respectively
10W aluminum casing resistor 9, the 10W aluminum casing resistor in 0.1 Europe 9, the 10W aluminum casing resistor in 1 Europe 9, the 10W aluminum casing resistor 9 in 10 Europe
Only, the 10W aluminum casing resistor in 100 Europe 9.Above-mentioned 45 aluminum casing resistors, which pass through, to be one another in series and PF44 toggle switch, and realization 0~
The resistance variations in 999.99 Europe, specific circuit can connection relationship it is as shown in Figure 5.PF44 toggle switch selects the work of 3 black
For the display and setting of resistance integer part, the display and setting as resistance fractional part of 2 browns.
The technical requirements of the present embodiment:
Accuracy: 3.0%, range: the Europe 0-999.99 is arranged in resistance value, and minimum setting precision is 0.01 Europe；
Elementary error indicates the limit of its elementary error as ± the 3% of range using the percentage of a reference value；
Operating ambient temperature is -20~+50 DEG C.
Working environment humidity is 25%~95%；
From horizontal service position to either direction, inclination does not influence measurement result；
External magnetic field strength causes the variation of indicated value to be not more than the 1.5% of a reference value under the influence of being 0.4KA/m；
The insulation resistance of route and shell inside embodiment is not less than 20 megaohms；
The voltage test of route and shell inside embodiment is 500V.
The course of work of the present embodiment:
As shown in figure 4, earth resistance analog training device is electrically connected with earth resistance tester, i.e. the pole C wiring
One end of column is electrically connected with the pole the C interface of earth resistance tester；One end of the pole P binding post and the pole P of earth resistance tester
Interface electrical connection；One end of the pole E binding post is electrically connected with the pole the E interface of earth resistance tester.Then, it is dialled by pressing PF44
Code switch adjusts the resistance value of resistor matrix, so that between the pole the common point G and E binding post of first resistor Rc, second resistance Rp
Resistor matrix is accessed to obtain different resistance values, to simulate the earthing pole resistance value of all kinds of controller switching equipments.
The present embodiment the utility model has the advantages that
1, the setting precision for improving ground resistance avoids start-up's habituation and misreads number；
2, human-computer interaction interface is improved, the operation interface for switching resistance value is more intuitive, convenient.
The same or similar label correspond to the same or similar components；
The terms describing the positional relationship in the drawings are only for illustration, should not be understood as the limitation to this patent；
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For example, the quantity of resistance, the model of resistance and coding are opened in resistor matrix in embodiment
The model of pass group is only to illustrate, and other resistance quantity still fall within the protection scope of this patent with other models,
And not only using embodiment as the limitation of this patent.
For those of ordinary skill in the art, other not similar shapes can also be made on the basis of the above description
The variation or variation of formula.There is no necessity and possibility to exhaust all the enbodiments.It is all in the spirit and principles in the present invention
Within made any modifications, equivalent replacements, and improvements etc., should all be included in the scope of protection of the claims of the present invention.
Claims (10)
1. a kind of earth resistance analog training device, is electrically connected, which is characterized in that including resistance with earth resistance tester
Matrix, the pole C binding post, the pole P binding post, the pole E binding post, first resistor, second resistance, the code switch with short-circuit function
Group, wherein
One end of the pole the C binding post is electrically connected with the pole the C interface of earth resistance tester；
One end of the pole the P binding post is electrically connected with the pole the P interface of earth resistance tester；
One end of the pole the E binding post is electrically connected with the pole the E interface of earth resistance tester；
The other end of the pole the C binding post is electrically connected with one end of first resistor；
The other end of the pole the P binding post is electrically connected with one end of second resistance；
The other end of the pole the E binding post is electrically connected with one end of resistor matrix；
The other end of the resistor matrix, the other end of first resistor, second resistance the other end be electrically connected jointly；
The resistance value of the resistor matrix is adjusted by the code switch group with short-circuit function, resistor matrix with have
The code switch group of short-circuit function is electrically connected.
2. earth resistance analog training device according to claim 1, which is characterized in that the resistor matrix packet
Include resistance 9 of 0.01 Europe, the resistance in 0.1 Europe 9, the resistance in 1 Europe 9, the resistance in 10 Europe 9, the resistance in 100 Europe 9, on
The whole resistance composition resistor matrix stated, the variation range of resistance value is [0,999.99] Europe.
3. earth resistance analog training device according to claim 2, which is characterized in that in the resistor matrix
Resistance be all aluminum casing resistor.
4. earth resistance analog training device according to claim 2 or 3, which is characterized in that described having is short
The code switch group of road function is PF44 digital switch.
5. earth resistance analog training device according to claim 4, which is characterized in that the first resistor
Resistance value is equal to second resistance.
6. existing according to claim 1 to earth resistance analog training device, feature described in any claim in 3
In the resistance value of the first resistor is equal to second resistance.
7. earth resistance analog training device according to claim 5, which is characterized in that the first resistor
Resistance value is 500 Europe.
8. earth resistance analog training device according to claim 6, which is characterized in that the first resistor
Resistance value is 500 Europe.
9. according to claim 1, earth resistance analog training device described in 2,3,5,7 or 8, which is characterized in that described
Earth resistance analog training device further include shell, the resistor matrix, the pole C binding post, the pole P binding post, the pole E connect
Terminal, first resistor, second resistance and the code switch group with short-circuit function are arranged on shell, are fixed and are connected with shell
It connects.
10. earth resistance analog training device according to claim 9, which is characterized in that the shell opens up
There is ventilating groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910810098.XA CN110376441A (en) | 2019-08-29 | 2019-08-29 | A kind of earth resistance analog training device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910810098.XA CN110376441A (en) | 2019-08-29 | 2019-08-29 | A kind of earth resistance analog training device |
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| Publication Number | Publication Date |
|---|---|
| CN110376441A true CN110376441A (en) | 2019-10-25 |
Family
ID=68261167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910810098.XA Pending CN110376441A (en) | 2019-08-29 | 2019-08-29 | A kind of earth resistance analog training device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1149790A (en) * | 1995-06-21 | 1997-05-14 | 朗迅科技公司 | Analog-to-digital converter signal storage capacitor perturbation |
| JP2000234942A (en) * | 1999-02-16 | 2000-08-29 | Koyo Electronics Ind Co Ltd | Encoder, and device and system for adjusting encoder |
| CN202838770U (en) * | 2012-10-12 | 2013-03-27 | 浙江省电力公司电力科学研究院 | Ground resistor simulation device for skill training |
| CN103926853A (en) * | 2014-04-21 | 2014-07-16 | 株洲南车时代电气股份有限公司 | Programmable resistance output device and method |
| CN206235726U (en) * | 2016-11-16 | 2017-06-09 | 广西电网有限责任公司南宁供电局 | It is a kind of for electronic electric energy meter pressure test and the device of functional test |
| CN208861551U (en) * | 2018-02-09 | 2019-05-14 | 广东电网有限责任公司佛山供电局 | A kind of earth resistance meter auxiliary training device |
| CN208902840U (en) * | 2018-07-28 | 2019-05-24 | 苏州索拉科技有限公司 | A kind of programmable control circuit for automatically switching precision resistance |
| CN210894506U (en) * | 2019-08-29 | 2020-06-30 | 广东电网有限责任公司 | Ground resistance test simulation training device |
-
2019
- 2019-08-29 CN CN201910810098.XA patent/CN110376441A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1149790A (en) * | 1995-06-21 | 1997-05-14 | 朗迅科技公司 | Analog-to-digital converter signal storage capacitor perturbation |
| JP2000234942A (en) * | 1999-02-16 | 2000-08-29 | Koyo Electronics Ind Co Ltd | Encoder, and device and system for adjusting encoder |
| CN202838770U (en) * | 2012-10-12 | 2013-03-27 | 浙江省电力公司电力科学研究院 | Ground resistor simulation device for skill training |
| CN103926853A (en) * | 2014-04-21 | 2014-07-16 | 株洲南车时代电气股份有限公司 | Programmable resistance output device and method |
| CN206235726U (en) * | 2016-11-16 | 2017-06-09 | 广西电网有限责任公司南宁供电局 | It is a kind of for electronic electric energy meter pressure test and the device of functional test |
| CN208861551U (en) * | 2018-02-09 | 2019-05-14 | 广东电网有限责任公司佛山供电局 | A kind of earth resistance meter auxiliary training device |
| CN208902840U (en) * | 2018-07-28 | 2019-05-24 | 苏州索拉科技有限公司 | A kind of programmable control circuit for automatically switching precision resistance |
| CN210894506U (en) * | 2019-08-29 | 2020-06-30 | 广东电网有限责任公司 | Ground resistance test simulation training device |
Non-Patent Citations (1)
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|---|
| 茅圣仁 等: "接地电阻仪期间核查初步研究", 电工电气, no. 09, 15 September 2017 (2017-09-15), pages 51 - 55 * |
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