CN202548214U - Electronic insulation resistance detection device - Google Patents
Electronic insulation resistance detection device Download PDFInfo
- Publication number
- CN202548214U CN202548214U CN2012201363969U CN201220136396U CN202548214U CN 202548214 U CN202548214 U CN 202548214U CN 2012201363969 U CN2012201363969 U CN 2012201363969U CN 201220136396 U CN201220136396 U CN 201220136396U CN 202548214 U CN202548214 U CN 202548214U
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- insulation resistance
- input end
- binding post
- circuit
- control module
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Abstract
The utility model discloses an electronic insulation resistance detection device. The device comprises a master control module, a programmable control DC (Direct Current) high voltage power supply of which the input end is electrically connected with the output end of the master control module, a ground terminal binding post electrically connected with the programmable control DC high voltage power supply, an analogue to digital conversion module of which the output end is electrically connected with the input end of the master control module, a range switching circuit of which the output end is electrically connected with the input end of the analogue to digital conversion module, a measuring terminal binding post electrically connected with the input end of the range switching module, and a shielding terminal binding post electrically connected with the input end of the range switching module, wherein a voltage sampling resistor and a current sampling resistor are connected between the shielding terminal and the measuring terminal in parallel. The electronic insulation resistance detection device can output various different test voltages, and is suitable for different test occasions and multipurpose. The electronic insulation resistance detection device can be suitable for measuring the insulation resistance, the absorptance and the polarization index of various high voltage electric equipments on site, such as a transformer, an electric reactor, a capacitor and a breaker.
Description
Technical field
The utility model relates to a kind of pick-up unit, is specifically related to a kind of electronic type insulation resistance pick-up unit.
Background technology
Insulation resistance is meant: the direct current resistance of insulant under rated condition, add DC voltage in dielectric, and after finishing through the certain hour polarization process, flow through the corresponding resistance of dielectric leakage current and claim insulation resistance.Insulation resistance is the most basic insulation index of electrical equipment and electric wiring.For the commissioning test of low-voltage electrical appliance, the insulation resistance of motor, controller switching equipment and distribution line should not be lower than 0.5M Ω (for operating equipment and circuit, insulation resistance should not be lower than 1M Ω/kV) under the normal temperature.The insulation resistance of low-voltage electrical apparatus and stube cable thereof and secondary circuit generally should not be lower than 1M Ω; Environment relatively moister should not be lower than 0.5M Ω; The insulation resistance of the little bus of secondary circuit should not be lower than 10M Ω.The insulation resistance of I class electric hand tool should not be lower than 2M Ω.
The utility model content
The utility model provides a kind of electronic type insulation resistance pick-up unit; Exportable multiple different trial voltage; Be fit to different test occasions; A-table-multi-purpose can be adapted at the various high voltage electric equipments of in-site measurement, like insulation resistance, absorptance and the polarization index of transformer, reactor, capacitor, isolating switch etc.
For realizing above-mentioned purpose, the utility model provides a kind of electronic type insulation resistance pick-up unit, is characterized in that this device comprises:
Main control module;
Program-controlled DC high-voltage power supply, its inlet circuit connects the output terminal of main control module;
The earth terminal binding post, its circuit connects program-controlled DC high-voltage power supply;
Analog-to-digital conversion module, its circuit of output terminal connects the input end of main control module;
The range handover module, its circuit of output terminal connects the input end of analog-to-digital conversion module;
The measuring junction binding post, its circuit connects the input end of range handover module;
Shielding termination terminal, its circuit connects the input end of range handover module, is connected in parallel to voltage sampling resistor and current sampling resistor between this shielding end and the measuring junction.
Circuit is connected with divider resistance between above-mentioned earth terminal binding post and the measuring junction binding post.
This device also includes input equipment, and its circuit of output terminal connects the input end of main control module.
This device also includes display device, and its inlet circuit connects the output terminal of main control module.
External special test line is inserted respectively in measuring junction binding post and the earth terminal binding post; The shielded lead of the special test line of measuring junction binding post is inserted in the shielding termination terminal; And the test lead of external special test line is connected to the two ends of tested insulation resistance; Start shooting, select trial voltage through input equipment then, and startup detects to tested insulation resistance.
Measuring junction binding post, earth terminal binding post will detect information transmission to range handover module; The range handover module transfers to main control module with information transmission after analog-to-digital conversion module is changed; Main control module shows testing result through display device to operating personnel after detection information is handled.
Detection of end, with after the shutdown of electronic type insulation resistance pick-up unit, again that each is external special test line is extracted earlier.
The utility model electronic type insulation resistance pick-up unit is compared with prior art, and its advantage is that the utility model can be exported multiple different trial voltage, is fit to different test occasions, a-table-multi-purpose.Can be adapted at the various high voltage electric equipments of in-site measurement, like insulation resistance, absorptance and the polarization index of transformer, reactor, capacitor, isolating switch etc.
Description of drawings
Fig. 1 is the circuit module figure of the utility model electronic type insulation resistance pick-up unit;
Fig. 2 is the control panel face synoptic diagram of the utility model electronic type insulation resistance pick-up unit.
Embodiment
Below in conjunction with accompanying drawing, specify the embodiment of the utility model.
As shown in Figure 1; The utility model discloses a kind of electronic type insulation resistance pick-up unit; This device comprises main control module 1, and this main control module 1 adopts the industry control all-in-one, and model is Nuo Dajia TPC6000-104TCATOM 1.6; It adopts Intel's atom low power processor, 10.4 cun touch-screens, 1G internal memory, and the 160GB hard disk.This main control module 1 is controlled the work of this Device Testing as the micro computer of this electronic type insulation resistance pick-up unit.
The circuit of output terminal of main control module 1 is connected with program-controlled DC high-voltage power supply 2, and its model is 4051, and this program-controlled DC high-voltage power supply 2 is gone back circuit and is connected with earth terminal binding post E.The input end of main control module 1 output steering order to program-controlled DC high-voltage power supply 2.
The input end of main control module 1 also circuit is connected with analog-to-digital conversion module 3, and its model is AD7888, and analog-to-digital conversion module 3 circuit of output terminal connect the input end of main control module 1.The inlet circuit of analog-to-digital conversion module 3 is connected with range handover module 4, and its model is 4051, and the inlet circuit of this range handover module 4 is connected with measuring junction binding post L and shielding termination terminal G.Range handover module 4 is used for changing enlargement factor through electronic switch.
Be connected in parallel to voltage sampling resistor and current sampling resistor between this shielding termination terminal G and the measuring junction binding post L; Shielding termination terminal G and measuring junction binding post L can detect voltage that is added on the test specimen insulation resistance and the electric current that flows through test specimen respectively, and dyad journey handover module 4 is transmission voltage sample intelligence and current sampling information respectively.
Between earth terminal binding post E and measuring junction binding post L, go back circuit and be connected with divider resistance.
On earth terminal binding post E, measuring junction binding post L, be inserted with external special test line respectively, the test lead of this special test line circuit respectively is connected the two ends of tested insulation resistance.The special test line that is inserted on the measuring junction binding post L is provided with shielded lead, and this shielded lead is inserted among the shielding termination terminal G.
This device also includes input equipment 5, and this input equipment 5 adopts button, includes switch key 51, starts/stop key 52, shows switching key 53 and voltage selection key 54, and these input equipment 5 circuit of output terminal connect the input end of main control module 1.
This device also includes display device 6, and this display device 6 adopts dot matrix lcd, and its inlet circuit connects the output terminal of main control module 1.
As shown in Figure 2, be the control panel synoptic diagram of the utility model electronic type insulation resistance pick-up unit.In the left demifacet of this panel, its upper left corner is provided with charge power supply plug 7, and switch key 51 is arranged on the bottom of left demifacet.In the right-half plane of this panel; Measuring junction binding post L, shielding termination terminal G, earth terminal binding post E are arranged at top successively from left to right; The liquid crystal display of display device 6 is arranged at the middle part of right-half plane, shows that switching key 53 and voltage selection key 54 correspondences are arranged on the right of display device 6.Start/stop key 52 be arranged at right-half plane the bottom.
The workflow of the utility model electronic type insulation resistance pick-up unit is following: two external special test lines are inserted respectively among measuring junction binding post L and the earth terminal binding post E; The shielded lead that is inserted in special-purpose p-wire among the measuring junction binding post L is inserted among the shielding termination terminal G, and the test lead of two external special test lines is connected to the two ends of tested insulation resistance.Press switch key 51 starts then.Selecting trial voltage: DM50C through voltage selection key 54 is 500V, 1000V, 2500V, 5000V.After choosing trial voltage, by starting/stop key 52, electronic type insulation resistance pick-up unit then begins tested insulation resistance is detected.
Measuring junction binding post L, earth terminal binding post E will detect information transmission to range handover module 4; Range handover module 4 is with information transmission to analog-to-digital conversion module 3; After changing, 3 pairs of information of analog-to-digital conversion module transfer to main control module 1; After 1 pair of detection information of main control module is handled, show testing result to operating personnel through display device 6.
After the detection of end, through pressing switch key 51, with the shutdown of electronic type insulation resistance pick-up unit, and then the special test line that each is external is extracted.
The principal feature of this electronic type insulation resistance pick-up unit is following:
1) calculates absorptance and polarization index automatically, show the change procedure of absorptance and polarization index in real time;
2) output current is big, short-circuit current (L end and E terminal shortcircuit)>5mA (when the battery full charge);
3) test the time allows to boost earlier and afterwards connects the test product test, also can connect the test of boosting behind the test product earlier, but have nothing to do with continuous coverage under the situation of power supply;
4) the Hi-pot test line is a silicon rubber high-tension shielding line, and p-wire mops floor to measure does not have influence to measurement result;
5) direct current supply, the built-in high capacity rechargeable battery, but once charge continuous working more than 4 hours; Possess the battery protection function simultaneously, make the battery longer service life; Instrument is under the non-measurement state, can shut down automatically after about 2 minutes;
6) have the function of rapid discharge, guarantee personal safety when measuring the high capacity test product;
7) antijamming capability is strong, disturbs on-the-spot reading also can stablize at highfield;
8) have powerful protecting against shock ability, do not damage instrument when guaranteeing to measure the high capacity test product.
Although the content of the utility model has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to the restriction to the utility model.After those skilled in the art have read foregoing, for the multiple modification of the utility model with to substitute all will be conspicuous.Therefore, the protection domain of the utility model should be limited appended claim.
Claims (4)
1. electronic type insulation resistance pick-up unit is characterized in that this device comprises:
Main control module (1);
Program-controlled DC high-voltage power supply (2), its inlet circuit connects the output terminal of described main control module (1);
Earth terminal binding post (E), its circuit connect described program-controlled DC high-voltage power supply (2);
Analog-to-digital conversion module (3), its circuit of output terminal connects the input end of main control module (1);
Range handover module (4), its circuit of output terminal connects the input end of analog-to-digital conversion module (3);
Measuring junction binding post (L), its circuit connect the input end of said range handover module (4);
Shielding termination terminal (G), its circuit connects the input end of said range handover module (4), is connected in parallel to voltage sampling resistor and current sampling resistor between this shielding end (G) and the measuring junction (L).
2. electronic type insulation resistance pick-up unit as claimed in claim 1 is characterized in that, circuit is connected with divider resistance between described earth terminal binding post (E) and the measuring junction binding post (L).
3. electronic type insulation resistance pick-up unit as claimed in claim 1 is characterized in that this device also includes input equipment (5), and its circuit of output terminal connects the input end of main control module (1).
4. electronic type insulation resistance pick-up unit as claimed in claim 1 is characterized in that this device also includes display device (6), and its inlet circuit connects the output terminal of main control module (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201363969U CN202548214U (en) | 2012-03-31 | 2012-03-31 | Electronic insulation resistance detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201363969U CN202548214U (en) | 2012-03-31 | 2012-03-31 | Electronic insulation resistance detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202548214U true CN202548214U (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201363969U Expired - Lifetime CN202548214U (en) | 2012-03-31 | 2012-03-31 | Electronic insulation resistance detection device |
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| CN (1) | CN202548214U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308740A (en) * | 2013-06-28 | 2013-09-18 | 河南省电力公司南阳供电公司 | Anti-interference test method for DC (direct current) resistance of shunt reactor of the voltage of 35 kilovolts |
| CN104977489A (en) * | 2015-07-05 | 2015-10-14 | 巢湖市金辉自控设备有限公司 | Detection and maintenance method for windings of transformer |
| CN106018963A (en) * | 2016-05-13 | 2016-10-12 | 国网天津市电力公司 | Portable insulation resistance test control system |
| TWI563265B (en) * | 2016-05-13 | 2016-12-21 | Bo-Cheng Ke | |
| CN110441633A (en) * | 2019-08-14 | 2019-11-12 | 青岛云路特变智能科技有限公司 | Reactor test macro and method |
| CN110441609A (en) * | 2019-08-30 | 2019-11-12 | 国家电网有限公司 | Capacitor insulation resistance detection device, system and method |
| CN110554243A (en) * | 2019-09-16 | 2019-12-10 | 桂林理工大学 | Intelligent detection device for insulation resistance |
| CN117907776A (en) * | 2024-03-18 | 2024-04-19 | 国网上海市电力公司 | Intelligent high-voltage cable direct current testing device and method |
-
2012
- 2012-03-31 CN CN2012201363969U patent/CN202548214U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308740A (en) * | 2013-06-28 | 2013-09-18 | 河南省电力公司南阳供电公司 | Anti-interference test method for DC (direct current) resistance of shunt reactor of the voltage of 35 kilovolts |
| CN104977489A (en) * | 2015-07-05 | 2015-10-14 | 巢湖市金辉自控设备有限公司 | Detection and maintenance method for windings of transformer |
| CN106018963A (en) * | 2016-05-13 | 2016-10-12 | 国网天津市电力公司 | Portable insulation resistance test control system |
| TWI563265B (en) * | 2016-05-13 | 2016-12-21 | Bo-Cheng Ke | |
| CN110441633A (en) * | 2019-08-14 | 2019-11-12 | 青岛云路特变智能科技有限公司 | Reactor test macro and method |
| CN110441609A (en) * | 2019-08-30 | 2019-11-12 | 国家电网有限公司 | Capacitor insulation resistance detection device, system and method |
| CN110554243A (en) * | 2019-09-16 | 2019-12-10 | 桂林理工大学 | Intelligent detection device for insulation resistance |
| CN117907776A (en) * | 2024-03-18 | 2024-04-19 | 国网上海市电力公司 | Intelligent high-voltage cable direct current testing device and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |
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| CX01 | Expiry of patent term |