CN107643502A - A kind of high-voltage electrical apparatus detecting instrument check device - Google Patents
A kind of high-voltage electrical apparatus detecting instrument check device Download PDFInfo
- Publication number
- CN107643502A CN107643502A CN201710885114.2A CN201710885114A CN107643502A CN 107643502 A CN107643502 A CN 107643502A CN 201710885114 A CN201710885114 A CN 201710885114A CN 107643502 A CN107643502 A CN 107643502A
- Authority
- CN
- China
- Prior art keywords
- tension
- instrument
- voltage
- resistance
- circuit plate
- Prior art date
- 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.)
- Pending
Links
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention discloses a kind of high-voltage electrical apparatus detecting instrument check device,It is related to power measurement technical field,For current power department to the used various means that electrically detecting instrument is verified general lack of dedicated functions,The problem of integrity of the instrument and equipment before use and after use can not be confirmed,Using by high-tension circuit plate,Connecting line,Insulating cylinder,Measuring instrumentss are arranged in casing,Binding post is set on casing,Panel,High-tension circuit plate is provided with high-voltage capacitance,High-tension resistive,Precision resistance,Transformer,High-voltage capacitance,High-tension resistive,Precision resistance,Transformer is integrated in the technical scheme on the high-tension circuit plate by way of serial or parallel connection,The invention is applied to include electric capacity dielectric loss measuring instrument,Insulation Resistance Tester,Circuit resistance tester,Instrument for measuring DC resistance,Impedance instrument,A variety of different types of feature inspections for commonly using electric detecting instrument such as no-load voltage ratio tester,It is vdiverse in function,It is practical.
Description
Technical field
The present invention relates to power measurement technical field, more particularly to a kind of high-voltage electrical apparatus detecting instrument check device.
Background technology
High-voltage electrical apparatus detecting instrument is the master tool that power department carries out electric equipment diagnosis, and its instrument species is various,
It is related to the detection to different type power equipments such as capacitance kind, resistance class, inductors.Currently, power department is to used each
The means that the electric detecting instrument of kind is verified general lack of dedicated functions, can not confirm instrument and equipment before use and after use
It is intact.Because carry collision, frequently use, electric detecting instrument functional deficiency caused by the reason such as application method is improper the problem of not
In minority, fail to find in time due to lacking the means of special functional authorization, different journeys are caused to detection operating efficiency
The influence of degree.School is sent to be only capable of solving check problem of the instrument in long-term use high-voltage electrical apparatus detecting instrument censorship, and short-term frequency
During numerous use, only a small number of instruments have the self-correcting module of standard type, and more scattered inconvenience.
The content of the invention
The present invention provides a kind of high-voltage electrical apparatus detecting instrument check device, to solve current power department to used
The various means that electrically detecting instrument is verified general lack of dedicated functions, can not confirm instrument and equipment before use and after use
Integrity and send school to be only capable of solving check problem of the instrument in long-term use high-voltage electrical apparatus detecting instrument censorship, it is and short-term
During frequent use, the problem of only a small number of instruments have a self-correcting module of standard type, and more scattered inconvenient.
To solve the above problems, the present invention adopts the following technical scheme that realization：
A kind of high-voltage electrical apparatus detecting instrument check device, including casing, high-tension circuit plate, binding post, panel, connecting line, absolutely
Edge cylinder, measuring instrumentss；
High-tension circuit plate is provided with the casing, panel is provided with above casing, binding post and measurement are provided with panel
Instrument；
The high-tension circuit plate is provided with high-voltage capacitance, high-tension resistive, precision resistance, transformer, the high-voltage capacitance, high-tension electricity
Resistance, precision resistance, transformer are integrated in by way of serial or parallel connection on the high-tension circuit plate；
High-tension circuit plate is connected by connecting line with the binding post on panel；
Described device is divided into Hi-pot test area, high-current test area, impedance no-load voltage ratio test section.
Preferably, the casing is the high strength steel housing box body with electro-magnetic screen function.
Preferably, the high-tension circuit plate is glass mat.
Preferably, the Hi-pot test area includes Hi-pot test loop one and Hi-pot test loop two；
Hi-pot test loop one is made up of 1 high-voltage capacitance and 2 high-tension resistives, and high-voltage capacitance one end is connected with binding post 1,
The high-voltage capacitance other end is connected with binding post 2, high-tension resistive R1 one end and high-tension resistive R2 one end, and high-tension resistive R1 is another
End is connected with binding post 4, and the high-tension resistive R2 other ends are connected with binding post 5；
Hi-pot test loop two is composed in series by 3 high-tension resistives, and the both ends of Hi-pot test loop two are parallel with voltmeter, each
Draw a binding post in individual resistance both ends.
Preferably, the high-current test area includes high-current test loop one and high-current test loop two；
High-current test loop one is composed in series by 3 micro-ohm level precision resistances, and level cranking test instrument is measured for micro-ohm
Feature inspection；High-current test loop two is composed in series by 3 milliohm level precision resistances, and level high current is measured for milliohm
The feature inspection of test apparatus.
Preferably, the impedance no-load voltage ratio test section is formed by 1 with tapped single-phase two-winding transformer, is used for
The feature inspection of testing impedance class, no-load voltage ratio test quasi-instrument.
Preferably, the leading-out terminal in the Hi-pot test area uses pure magnetic insulator, grade of rated voltage 10kV；
The high-voltage capacitance, the lead-out wire of circuit interface to panel interface of high-tension resistive are enclosed in insulating cylinder.
Preferably, the high-voltage capacitance is high-pressure polypropylene thin film capacitor, rated voltage 10kV；
The high-tension resistive is the noninductive high-voltage resistor of high-power glass glaze, rated voltage 10kV.
Preferably, the precision resistance is four lead copper-manganese sampling resistors, it is maximum allowable it is through-flow be 200A.
Preferably, the two-winding transformer nominal transformation ratio is 220V:220V, centre tap are drawn by transformer secondary.
The present invention has following features：
1st, suitable for including electric capacity dielectric loss measuring instrument, Insulation Resistance Tester, circuit resistance tester, instrument for measuring DC resistance,
A variety of different types of feature inspections for commonly using electric detecting instrument such as impedance instrument, no-load voltage ratio tester, it is vdiverse in function, it is real
It is strong with property；
2nd, panel interface is simple, and application method is quick, flexibly, interface that can be different according to test examination instrument difference measurement range selection is treated；
3rd, there is the insulating Design of enough nargin, insulating properties are good, and with certain shockproof and antijamming capability, device peace
Entirely, reliably；
4th, electric power O＆M testing crew the present invention can be used efficiently to carry out instrumental function inspection before and after experiment work is carried out,
Ensure experiment work validity and instrument detection function it is intact, be worth being widely popularized in power department.
Brief description of the drawings
Accompanying drawing 1 is case inner high voltage board circuit wiring schematic diagram；
Accompanying drawing 2 is cabinet panel schematic diagram；
Accompanying drawing 3 is casing elevation cross-sectional view.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached in the embodiment of the present invention
Figure, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is the present invention
Part of the embodiment, rather than whole embodiments.The embodiments of the invention being generally described and illustrated herein in the accompanying drawings
The scope for being not intended to limit claimed invention is described in detail, but is merely representative of the selected embodiment of the present invention.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
A kind of high-voltage electrical apparatus detecting instrument check device, it is that one kind is based on different classes of high-voltage electrical apparatus detector and its detection
Object（Capacitance kind, resistance class, inductor）And the function inspection device designed, the test function validity for inspection apparatus.
Device is by high intensity box hat and carries the casing of electro-magnetic screen function, the high-tension circuit that glass fibre material is formed
Plate, case external wiring terminal and panel, connecting line, insulating cylinder, measurement meter composition；High-tension circuit plate is integrated with high-voltage capacitance, height
The components such as piezoresistance, precision resistance, transformer, and pass through string（And) connection mode be integrated on high-tension circuit plate；High-tension electricity
Box house is arranged on the plate of road, the corresponding Component Interface of high-tension circuit plate passes through the terminals on connecting line and cabinet panel
Son is connected；Device panel can divide Hi-pot test area, high-current test area, impedance no-load voltage ratio test section by function.
The circuit design of case inner high voltage circuit board according to different detecting instruments function（Compression type, through-flow type, coil measurement
Type）It is divided into three circuit module areas, circuit design schematic diagram is as shown in figure 1, corresponding draw interface panel as indicated with 2, inside case
Sub-unit elevation cross-sectional view is as shown in Figure 3.
First, Hi-pot test area element and circuit are integrated on high-tension circuit plate, it is made up of 2 different test loops：
Loop one is composed in series respectively by 1 high-voltage capacitance and 2 high-tension resistives, specific wiring and leading-out terminal as shown in figure 1,
Electric capacity C1 head ends connect 1 port, and C1 ends, which are drawn, connects 2 ports, while simultaneously connecting resistance R1, R2 head end 3, resistance R1, R2 ends point
4,5 ports Yin Chu not connect；The loop can be used for electric capacity dielectric loss class test apparatus（Such as dielectric loss measuring instrument, capacitance measuring tester, high-tension electricity
Bridge etc.）Feature inspection.Present case sets C1 capacitances as 1600pF, and R1, R2 are respectively 50k Ω, 100k Ω.
Loop two is composed in series by 3 high-tension resistives, and specific wiring and leading-out terminal are as shown in figure 1, resistance R3 head ends connect 6
Port, R3 ends are drawn and connect 7 ports, while and connect R4 head ends, R4 ends, which are drawn, connects 8 ports, while and connects R5 head ends, R5 ends
Connect 9 ports, between port 6 and port 9 can a high tension voltage Table V in parallel, for measuring and showing the loop institute making alive, checking
Treat that test examination instrument pressurization function is normal.The loop can be used for insulaion resistance class test apparatus（Such as numerical megger, insulating megger）
Feature inspection.Present case setting R3, R4, R5 resistance value is respectively 10G Ω, 10M Ω, 10k Ω.
Wherein, high-voltage capacitance C1 is high-pressure polypropylene thin film capacitor, rated voltage 10kV；High-tension resistive R1, R2,
R3, R4, R5 are the noninductive high-voltage resistor of high-power glass glaze, rated voltage 10kV.
Hi-pot test area uses pure magnetic insulator, grade of rated voltage 10kV in device leading-out terminal 1,2；High-tension electricity
Hold, the lead-out wire of high-tension resistive circuit interface to device panel interface is enclosed on insulating cylinder（Pipe）Interior, it faces diagrammatic cross-section
As shown in Figure 3.
Second, high-current test area element and circuit are integrated on high-tension circuit plate, it is made up of 2 different test loops：
Wherein loop one is composed in series by 3 micro-ohm level precision resistances, and level cranking test instrument is measured for micro-ohm（Such as loop
Resistance meter, double bridge etc.）Feature inspection；Specific wiring and leading-out terminal are as shown in figure 1, resistance r6 head ends connect 10
Port, r6 ends are drawn and connect 11 ports, while and connect r7 head ends, r7 ends, which are drawn, connects 12 ports, while and connects r8 head ends, r8 ends
Terminate 13 ports.Present case setting r6, r7, r8 resistance value is 300 μ Ω.
Loop one is composed in series by 3 milliohm level precision resistances, and level cranking test instrument is measured for milliohm（Such as direct current
Resistance meter, ground meter etc.）Feature inspection；Specific wiring and leading-out terminal are as shown in figure 1, the extraction of r9 head ends connects
14 ports, r9 ends are drawn and connect 15 ports, while and connect r10 head ends, r10 ends, which are drawn, connects 16 ports, while and meets r11 head
End, r8, r11 end is connected to 13 ports, is then concatenated drawing after ammeter I connecing 17 ports, while and connects 23 grounding ports.
Present case setting r9, r10, r11 resistance value is 300m Ω.
Wherein precision resistance r6, r7, r8, r9, r10, r11 is four lead copper-manganese sampling resistors, maximum allowable through-flow to be
200A。
Third, impedance no-load voltage ratio test section element and circuit are integrated on high-tension circuit plate, tapped list is carried by 1
Phase two-winding transformer TR is formed, for testing impedance class, the feature inspection of no-load voltage ratio test quasi-instrument;Specific wiring and extraction
For terminal as shown in figure 1, transformer primary side head end connects 21 ports, primary side end connects 22 ports, while and connects 23 grounding ports, transformation
Device secondary head end connects 20 ports, and secondary end connects 18 ports, and centre tap connects 19 ports.Two-winding transformer nominal transformation ratio is
220V:220V, centre tap are drawn by transformer secondary.
Instrumental function checks case：
Case 1：Electric capacity dielectric loss quasi-instrument feature inspection
, only need to be by terminal 1 as a separate unit capacitive apparatus when carrying out the feature inspection of dielectric loss measuring instrument, capacitance measuring tester
Head end, terminal 2 or terminal 4 or terminal 5 form the different collocation of 1-2,1-4,1-5 as the end of the capacitive apparatus,
Measurement obtains capacitance therein, confirms the value and C1 rated capacitance in certain deviation range（Deviation size refers to
Accuracy of instrument voluntarily determines）Capacitance measurement feature it is intact；Connect 1-2,1-4,1-5 difference terminal in addition, measured three groups
The nominal value that dielectric loss value designs with the present invention（Dielectric loss 1, dielectric loss 2, dielectric loss 3）It is compared, by the deviation for comparing dielectric loss measurement
Amount（Deviation size refers to accuracy of instrument and voluntarily determined）To confirm that its dielectric loss measurement feature is intact.
Case 2：Insulaion resistance class test apparatus feature inspection
When carry out numerical megger, insulating megger feature check when, only need to be by terminal 9 as an insulating part end,
Terminal 6 or terminal 7 or terminal 8 form the different collocation of 6-9,7-9,8-9, you can measurement obtains as the head end of the insulating part
Three groups of different insulating resistance values, pass through the nominal value designed with the present invention（10GΩ、10MΩ、10kΩ）It is compared, passes through
Compare the departure of insulating resistance value measurement（Deviation size refers to accuracy of instrument and voluntarily determined）To confirm that its insulaion resistance is surveyed
It is intact to measure feature.
Case 3：Micro-ohm measures the feature inspection of level cranking test instrument
When the feature for carrying out circuit resistance tester checks, only need to by terminal 17 as testing resistance end, terminal 10 or
Terminal 11 or terminal 12 form the different collocation of 10-17,11-17,12-17, you can measure as the head end of the testing resistance
The loop resistance value different to three groups, pass through the nominal value designed with the present invention（900μΩ、600μΩ、300μΩ）Compared
Departure that is right, being measured by comparison resistance value（Deviation size refers to accuracy of instrument and voluntarily determined）To confirm its loop resistance
Feature is intact.
Case 4：Milliohm measures the feature inspection of level cranking test instrument
When the feature for carrying out instrument for measuring DC resistance checks, only need to by terminal 17 as testing resistance end, terminal 14 or
Terminal 15 or terminal 16 form the different collocation of 14-17,15-17,16-17, you can measure as the head end of the testing resistance
The DC resistance different to three groups, pass through the nominal value designed with the present invention（900mΩ、600mΩ、300mΩ）Compared
Departure that is right, being measured by comparison resistance value（Deviation size refers to accuracy of instrument and voluntarily determined）To confirm its D.C. resistance
Feature is intact.
Case 5：The feature inspection of no-load voltage ratio tester
, only need to be by terminal 21-22 as transformer primary side to be measured, terminal 20- when the feature for carrying out no-load voltage ratio tester checks
Secondary of the 18 or terminal 19-18 as the transformer to be measured, you can measurement obtain two groups of different change ratios, by with the present invention
The nominal value of design（Nominal transformation ratio, centre tap no-load voltage ratio）It is compared, the departure measured by comparing no-load voltage ratio（Deviation size
Accuracy of instrument is referred to voluntarily to determine）To confirm that its no-load voltage ratio measurement feature is intact.
Case 6：The feature inspection of impedance instrument
When carrying out the feature inspection of impedance instrument, electric inductance measuring-testing instrument, terminal 18, terminal 19, terminal 20 need to only be opened a way,
Terminal 21-22 is measured as one group of reactance, the impedance value that will be obtained（Inductance value）The nominal value designed with the present invention enters
Row compares, by the departure for comparing impedance measurement（Deviation size refers to accuracy of instrument and voluntarily determined）To confirm that its impedance is surveyed
It is intact to measure feature.
Claims (10)
- A kind of 1. high-voltage electrical apparatus detecting instrument check device, it is characterised in that：Including casing, high-tension circuit plate, binding post, panel, connecting line, insulating cylinder, measuring instrumentss；High-tension circuit plate is provided with the casing, panel is provided with above casing, binding post and measurement are provided with panel Instrument；The high-tension circuit plate is provided with high-voltage capacitance, high-tension resistive, precision resistance, transformer, the high-voltage capacitance, high-tension electricity Resistance, precision resistance, transformer are integrated in by way of serial or parallel connection on the high-tension circuit plate；High-tension circuit plate is connected by connecting line with the binding post on panel；Described device is divided into Hi-pot test area, high-current test area, impedance no-load voltage ratio test section.
- 2. device according to claim 1, it is characterised in that：The casing is the high strength steel housing box body with electro-magnetic screen function.
- 3. device according to claim 1, it is characterised in that：The high-tension circuit plate is glass mat.
- 4. device according to claim 1, it is characterised in that：The Hi-pot test area includes Hi-pot test loop one and Hi-pot test loop two；Hi-pot test loop one is made up of 1 high-voltage capacitance and 2 high-tension resistives, and high-voltage capacitance one end is connected with binding post 1, The high-voltage capacitance other end is connected with binding post 2, high-tension resistive R1 one end and high-tension resistive R2 one end, and high-tension resistive R1 is another End is connected with binding post 4, and the high-tension resistive R2 other ends are connected with binding post 5；Hi-pot test loop two is composed in series by 3 high-tension resistives, and the both ends of Hi-pot test loop two are parallel with voltmeter, each Draw a binding post in individual resistance both ends.
- 5. device according to claim 1, it is characterised in that：The high-current test area includes high-current test loop one and high-current test loop two；High-current test loop one is composed in series by 3 micro-ohm level precision resistances, and level cranking test instrument is measured for micro-ohm Feature inspection；High-current test loop two is composed in series by 3 milliohm level precision resistances, and level high current is measured for milliohm The feature inspection of test apparatus.
- 6. device according to claim 1, it is characterised in that：The impedance no-load voltage ratio test section is formed by 1 with tapped single-phase two-winding transformer, for testing impedance class, No-load voltage ratio tests the feature inspection of quasi-instrument.
- 7. device according to claim 1, it is characterised in that：The leading-out terminal in the Hi-pot test area uses pure magnetic insulator, grade of rated voltage 10kV；The high-voltage capacitance, the lead-out wire of circuit interface to panel interface of high-tension resistive are enclosed in insulating cylinder.
- 8. device according to claim 4, it is characterised in that：The high-voltage capacitance is high-pressure polypropylene thin film capacitor, rated voltage 10kV；The high-tension resistive is the noninductive high-voltage resistor of high-power glass glaze, rated voltage 10kV.
- 9. device according to claim 5, it is characterised in that：The precision resistance is four lead copper-manganese sampling resistors, it is maximum allowable it is through-flow be 200A.
- 10. device according to claim 6, it is characterised in that：The two-winding transformer nominal transformation ratio is 220V:220V, centre tap are drawn by transformer secondary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710885114.2A CN107643502A (en) | 2017-09-26 | 2017-09-26 | A kind of high-voltage electrical apparatus detecting instrument check device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710885114.2A CN107643502A (en) | 2017-09-26 | 2017-09-26 | A kind of high-voltage electrical apparatus detecting instrument check device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107643502A true CN107643502A (en) | 2018-01-30 |
Family
ID=61113791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710885114.2A Pending CN107643502A (en) | 2017-09-26 | 2017-09-26 | A kind of high-voltage electrical apparatus detecting instrument check device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107643502A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142815A (en) * | 2018-08-20 | 2019-01-04 | 京信通信系统（中国）有限公司 | Screening arrangement |
| CN109444544A (en) * | 2018-11-02 | 2019-03-08 | 国网辽宁省电力有限公司丹东供电公司 | A kind of portable constant temperature D.C. resistance calibration equipment |
| CN113589025A (en) * | 2021-07-07 | 2021-11-02 | 广东电网能源发展有限公司 | Electrical test calculation method, device, equipment and medium |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100171513A1 (en) * | 2006-12-29 | 2010-07-08 | Signature Control Systems, Inc. | Wood kiln moisture measurement calibration and metering methods |
| US7834641B1 (en) * | 2007-06-07 | 2010-11-16 | Keithley Instruments, Inc. | Phase-gain calibration of impedance/admittance meter |
| CN101887110A (en) * | 2009-05-11 | 2010-11-17 | 武汉特试特电气有限公司 | Device and method for detecting insulating oil dielectric strength tester |
| CN102621513A (en) * | 2012-04-10 | 2012-08-01 | 辽宁省电力有限公司抚顺供电公司 | Calibration standard device for portable dielectric loss testers |
| CN202548312U (en) * | 2012-04-10 | 2012-11-21 | 辽宁省电力有限公司抚顺供电公司 | Portable calibration standard device of dielectric loss tester |
| US20130049797A1 (en) * | 2011-08-25 | 2013-02-28 | STMicronelectronics Pvt. Ltd. | Impedance calibration circuit and method |
| CN203037840U (en) * | 2013-01-18 | 2013-07-03 | 海南英利新能源有限公司 | Insulation resistor test device calibrating device |
| CN203101622U (en) * | 2013-01-25 | 2013-07-31 | 河北省电力公司电力科学研究院 | Testing system for 220 V output voltage multi-output voltage mutual inductor |
| CN203502580U (en) * | 2013-10-12 | 2014-03-26 | 上海思创电器设备有限公司 | Checking system for online insulation monitoring device |
| CN104237826A (en) * | 2014-09-10 | 2014-12-24 | 国家电网公司 | Portable simulation resistor for calibration of direct current system insulation monitoring device |
| CN204086512U (en) * | 2014-09-10 | 2015-01-07 | 国家电网公司 | A kind of portable simulation resistor for Insulation Inspection Device for Direct-Current System verification |
| CN204203445U (en) * | 2014-11-14 | 2015-03-11 | 重庆泊津科技有限公司 | Measuring equipment rolling inspection device |
| CN205229444U (en) * | 2015-12-28 | 2016-05-11 | 武汉大学 | Capacitance type potential transformer harmonic measurement system |
| CN105974348A (en) * | 2016-04-29 | 2016-09-28 | 国网山东省电力公司电力科学研究院 | Low-voltage current transformer integrated detection system and method thereof |
| CN107167754A (en) * | 2017-06-19 | 2017-09-15 | 国网辽宁省电力有限公司抚顺供电公司 | Portable medium angle of loss criteria check device |
-
2017
- 2017-09-26 CN CN201710885114.2A patent/CN107643502A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100171513A1 (en) * | 2006-12-29 | 2010-07-08 | Signature Control Systems, Inc. | Wood kiln moisture measurement calibration and metering methods |
| US7834641B1 (en) * | 2007-06-07 | 2010-11-16 | Keithley Instruments, Inc. | Phase-gain calibration of impedance/admittance meter |
| CN101887110A (en) * | 2009-05-11 | 2010-11-17 | 武汉特试特电气有限公司 | Device and method for detecting insulating oil dielectric strength tester |
| US20130049797A1 (en) * | 2011-08-25 | 2013-02-28 | STMicronelectronics Pvt. Ltd. | Impedance calibration circuit and method |
| CN102621513A (en) * | 2012-04-10 | 2012-08-01 | 辽宁省电力有限公司抚顺供电公司 | Calibration standard device for portable dielectric loss testers |
| CN202548312U (en) * | 2012-04-10 | 2012-11-21 | 辽宁省电力有限公司抚顺供电公司 | Portable calibration standard device of dielectric loss tester |
| CN203037840U (en) * | 2013-01-18 | 2013-07-03 | 海南英利新能源有限公司 | Insulation resistor test device calibrating device |
| CN203101622U (en) * | 2013-01-25 | 2013-07-31 | 河北省电力公司电力科学研究院 | Testing system for 220 V output voltage multi-output voltage mutual inductor |
| CN203502580U (en) * | 2013-10-12 | 2014-03-26 | 上海思创电器设备有限公司 | Checking system for online insulation monitoring device |
| CN104237826A (en) * | 2014-09-10 | 2014-12-24 | 国家电网公司 | Portable simulation resistor for calibration of direct current system insulation monitoring device |
| CN204086512U (en) * | 2014-09-10 | 2015-01-07 | 国家电网公司 | A kind of portable simulation resistor for Insulation Inspection Device for Direct-Current System verification |
| CN204203445U (en) * | 2014-11-14 | 2015-03-11 | 重庆泊津科技有限公司 | Measuring equipment rolling inspection device |
| CN205229444U (en) * | 2015-12-28 | 2016-05-11 | 武汉大学 | Capacitance type potential transformer harmonic measurement system |
| CN105974348A (en) * | 2016-04-29 | 2016-09-28 | 国网山东省电力公司电力科学研究院 | Low-voltage current transformer integrated detection system and method thereof |
| CN107167754A (en) * | 2017-06-19 | 2017-09-15 | 国网辽宁省电力有限公司抚顺供电公司 | Portable medium angle of loss criteria check device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142815A (en) * | 2018-08-20 | 2019-01-04 | 京信通信系统（中国）有限公司 | Screening arrangement |
| CN109142815B (en) * | 2018-08-20 | 2021-06-22 | 京信通信技术(广州)有限公司 | Shielding device |
| CN109444544A (en) * | 2018-11-02 | 2019-03-08 | 国网辽宁省电力有限公司丹东供电公司 | A kind of portable constant temperature D.C. resistance calibration equipment |
| CN113589025A (en) * | 2021-07-07 | 2021-11-02 | 广东电网能源发展有限公司 | Electrical test calculation method, device, equipment and medium |
| CN113589025B (en) * | 2021-07-07 | 2024-07-16 | 广东电网能源发展有限公司 | Electrical test calculation method, device, equipment and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Liu et al. | A study of the sweep frequency impedance method and its application in the detection of internal winding short circuit faults in power transformers | |
| CN101706535B (en) | Device and method for testing dielectric loss of high voltage transformer | |
| CN106501696B (en) | A kind of 500kV high-voltage shunt reactor scene local discharge test system and method | |
| CN103267933B (en) | The method of shelf depreciation in measuring transformer induced voltage test device | |
| CN103336186A (en) | Method for testing transformer equipment without disassembling lead | |
| CN107643502A (en) | A kind of high-voltage electrical apparatus detecting instrument check device | |
| CN107632241A (en) | A kind of apparatus and method for testing paper oil insulation partial discharge characteristic | |
| CN112731017B (en) | Device for measuring and rectifying conduction emission items of power line | |
| CN201096870Y (en) | Installation status diagnosis device for high-voltage AC motor | |
| CN108181600B (en) | Capacitor voltage transformer testing device | |
| Wilk et al. | Investigations on sensitivity of FRA method in diagnosis of interturn faults in transformer winding | |
| CN106443549B (en) | A kind of analog AC resistance device for calibration battery internal resistance test device | |
| CN206002564U (en) | A kind of dielectric loss and insulation resistance test conversion equipment and pilot system | |
| CN204359883U (en) | A kind of transformer multifunctional tester | |
| CN109738727B (en) | Test circuit, method and device of working voltage test device | |
| CN107271775B (en) | electric power overhead line phase detection method | |
| CN204203445U (en) | Measuring equipment rolling inspection device | |
| CN105866667A (en) | Loop resistance test method for two-terminal-grounding circuit breaker | |
| CN109387802A (en) | A kind of rated current error testing method of high-tension current inductor | |
| CN107167754A (en) | Portable medium angle of loss criteria check device | |
| CN210514521U (en) | Insulation and voltage resistance inspection device | |
| CN208314174U (en) | A kind of integrated calibration equipment for electrical test instrument | |
| CN207424181U (en) | Induced voltage test device when a kind of three-phase transformer is long | |
| CN106970325B (en) | Generator handbag insulation reverse wiring inspection device and method for high potential measurement | |
| CN107091960B (en) | A kind of extra-high voltage π type DC filter is taken out stitches and preventive trial method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180130 |