CN204536484U - Integration insulation, pressure resistant testing device - Google Patents
Integration insulation, pressure resistant testing device Download PDFInfo
- Publication number
- CN204536484U CN204536484U CN201520303349.2U CN201520303349U CN204536484U CN 204536484 U CN204536484 U CN 204536484U CN 201520303349 U CN201520303349 U CN 201520303349U CN 204536484 U CN204536484 U CN 204536484U
- Authority
- CN
- China
- Prior art keywords
- voltage
- module
- power supply
- control panel
- tongue tube
- 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.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 64
- 238000009413 insulation Methods 0.000 title claims abstract description 39
- 230000010354 integration Effects 0.000 title claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims abstract description 25
- 238000004804 winding Methods 0.000 claims description 15
- 238000010616 electrical installation Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 10
- 238000004146 energy storage Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
The utility model provides integration insulation, pressure resistant testing device, comprise control panel, and the negative polarity high voltage direct current source module, industrial frequency AC voltage regulating module and the Survey control module that are connected with high-voltage power supply handover module respectively, Survey control module is connected with control panel.Compared with prior art, the integration insulation that the utility model provides, pressure resistant testing device, the Insulation Test of corresponding conventional electrical, volume is less, and shell is firm, carries more convenient; Be directed to simultaneously specific become batch insulation of electrical installation test time more time saving and energy saving, raise the efficiency.
Description
Technical field
The utility model relates to the pick-up unit of electric product, is specifically related to integration insulation and pressure resistant testing device.
Background technology
All electric products, dispatching from the factory, run, in the life cycle management of repair and maintenance, all will carry out two basic Insulation test.First megger test; It two is AC voltage withstand test.These two tests, all each test instrumentation of being freely correlated with and device have come.
For megger test, general use manual megohmmeter or electronic type megohmmeter.These megohmmeters are all that the direct current of negative polarity exports, and its voltage range has 250V, 500V, 1000V, 2500V, 5000V, and that the most frequently used is 500V, 1000V, 2500V.The test of insulation resistance is the first step of all Insulation Tests, only has this test passes, just can carry out other Insulation test project.On the basis that Insulation test is qualified, ac voltage withstanding is also necessary insulating monitoring project.Its examination electrical equipment actually bears over the ground, the tolerance of (or between parts) power-frequency voltage between winding.Capacity is from tens VA to MVA levels, and voltage is from a few hectovolt to millions of volt, and scope is extremely wide.But as low voltage electrical equipment, the voltage of general ac voltage withstanding is that the scope of AC500-3000V meets the demands completely.
But megger test uses megohmmeter, belongs to instrument field; Ac voltage withstanding uses pressure regulator, stepup transformer and supporting control box, belongs to apparatus field.Because of functional independence, be that independently instrument and device complete above-mentioned test by two kinds always.In addition, Insulation test is all hand power or uses powered battery, and ac voltage withstanding is all tested by on-the-spot patch pressure regulation.This is the work of time-consuming a, effort to the product Insulation test of large batch.
For specific supporting low voltage electrical equipment, or the electric unit (equipment) on fixing production line, such as high capacity cell energy storage devices etc., its Insulation test and ac voltage withstanding belong to fixing voltage and capacity requirement substantially.If by its integration, unified Alternating Current Power Supply, high pressure switches output, and same screen display result, can replace the function of two kinds of distinct devices to a certain extent completely, the deficiency wasted time and energy.
Summary of the invention
In order to meet the test needs of electric product, the utility model provides integration insulation, pressure resistant testing device.
The technical solution of the utility model is:
Integration insulation, pressure resistant testing device, described device comprises control panel, and the negative polarity high voltage direct current source module, industrial frequency AC voltage regulating module and the Survey control module that are connected with high-voltage power supply handover module respectively; Described control panel comprises selector switch, display and voltage output module; Described high-voltage power supply handover module comprises auxiliary reclay, the first high pressure vacuum tongue tube and the second high pressure vacuum tongue tube; Described negative polarity high voltage direct current source module comprises the first switch power module, second switch power module and high-tension transformer; Described industrial frequency AC voltage regulating module comprises pressure regulator and stepup transformer; Described Survey control module comprises control module and measuring unit; Survey control module is also connected with control panel.
Preferably, the auxiliary reclay of described high-voltage power supply handover module, its input end is connected with the output terminal of negative polarity high voltage direct current source module, and an output terminal of auxiliary reclay is connected with the first high pressure vacuum tongue tube, another output terminal and described Survey control model calling; The other end of described first high pressure vacuum tongue tube accesses the voltage output module of described control panel; A branch road of described second high pressure vacuum tongue tube one end is connected with described industrial frequency AC voltage regulating module, a branch road and described Survey control model calling, and the other end accesses the voltage output module of described control panel;
Preferably, the high-tension transformer of described negative polarity high voltage direct current source module, its secondary side comprises three-phase high-voltage winding, and the Same Name of Ends of described three-phase high-voltage winding is reversed polarity coiling, to export voltage opposite polarity with the primary side of high-tension transformer; Described first switch power module, for exporting+24V power supply; Described second switch power module, for exporting+5V power supply;
Preferably, the pressure regulator of described industrial frequency AC voltage regulating module, its one end is connected with AC power, and the other end is connected with described stepup transformer; The other end of stepup transformer is connected with the second high pressure vacuum tongue tube of described high-voltage power supply handover module;
Preferably, the measuring unit of described Survey control module comprises the first resistance branch and the second resistance branch; Described first resistance branch and the second resistance branch form by two resistant series; One end of first resistance branch is connected with the output terminal of the auxiliary reclay of described high-voltage power supply handover module, and one end of the second resistance branch is connected between described industrial frequency AC voltage regulating module and described second high pressure vacuum tongue tube; The other end of described first resistance branch is all connected with stake resistance with the other end of the second resistance branch; The control module of described Survey control module comprises single-chip microcomputer, for control described high-voltage power supply handover module the conducting of auxiliary reclay, the first high pressure vacuum tongue tube and the second high pressure vacuum tongue tube and disconnection;
Preferably, described control module, comprises three interfaces:
An interface is connected with the tie point of two resistance in the first resistance branch, gathers the DC voltage that negative polarity high voltage direct current source module exports; An interface is connected with the tie point of two resistance in the second resistance branch, gathers the alternating voltage that industrial frequency AC voltage regulating module exports; An interface is connected with described stake resistance, gathers the leakage current of negative polarity high voltage direct current source module and the output of industrial frequency AC voltage regulating module;
Preferably, described control module, also comprises two interfaces:
An interface is connected with the selector switch of control panel, gathers the positional information of described selector switch;
An interface is connected with the display of control panel, exports DC voltage, alternating voltage and leakage current;
Preferably, in described control panel:
Described selector switch is waver, and a gear is for starting Insulation test, and a gear is for starting ac voltage withstanding test, and a gear is for disconnecting Insulation test or disconnecting ac voltage withstanding test;
Described display, for showing the data message of Insulation test and ac voltage withstanding test;
Described voltage output module is high-voltage connector, for connecting equipment under test;
Preferably, described control panel also comprises and opens/stop button and ground connection binding post; Describedly open/stop button, for starting or stoping described device.
Compared with immediate prior art, excellent effect of the present utility model is:
1, the utility model provide integration insulation, pressure resistant testing device, the Insulation Test of corresponding conventional electrical, volume is less, and shell is firm, carries more convenient; Be directed to simultaneously specific become batch insulation of electrical installation test time more time saving and energy saving, raise the efficiency.
2, the utility model provide integration insulation, pressure resistant testing device, adopt high-pressure side directly measure combined-voltage, measuring accuracy exceeds an order of magnitude than legacy equipment.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Fig. 1: integration insulation, pressure resistant testing device structural drawing in the utility model embodiment;
Fig. 2: negative polarity high-voltage DC power supply module circuit diagram in the utility model embodiment.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
The integration insulation that the utility model provides, pressure resistant testing device are the electrical insulation testing devices that a kind of integrated Insulation test and ac voltage withstanding test in one, can be used in the supporting Insulation test of low voltage electrical equipment and Large Copacity energy storage device, also may be used for insulation calibrating and the ac voltage withstanding test of low voltage electrical equipment production line.
As shown in Figure 1, in the utility model embodiment, proving installation comprises control panel, and the negative polarity high voltage direct current source module, industrial frequency AC voltage regulating module and the Survey control module that are connected with high-voltage power supply handover module respectively.
Negative polarity high voltage direct current source module, for exporting the negative polarity high-voltage DC power supply needed for dielectric voltage withstand test, and the working power needed for proving installation; In the present embodiment, negative polarity high voltage direct current source module can export 500V, 1000V and 2500V tri-kinds of negative polarity power supplys, and exports the working power of+24V and+5V.
Industrial frequency AC voltage regulating module, for exporting continuously adjustable AC power.
Survey control module, for gathering the direct supply of negative polarity high voltage direct current source module output, the AC power of industrial frequency AC voltage regulating module output.
High-voltage power supply switches mould, switches for anticathode high voltage direct current source module and industrial frequency AC voltage regulating module.
Control panel is the human-computer interaction device of described proving installation, for carrying out manual operation to proving installation, such as, starts proving installation or stops proving installation.
1, high-voltage power supply handover module
Comprise auxiliary reclay, the first high pressure vacuum tongue tube and the second high pressure vacuum tongue tube.Its concrete annexation is:
The input end of auxiliary reclay is connected with the output terminal of negative polarity high voltage direct current source module, and an output terminal of auxiliary reclay is connected with the first high pressure vacuum tongue tube, another output terminal and Survey control model calling.The voltage output module of the other end Access Control panel of the first high pressure vacuum tongue tube; A branch road of one end of the second high pressure vacuum tongue tube is connected with industrial frequency AC voltage regulating module, a branch road and Survey control model calling, the voltage output module of other end Access Control panel.
In prior art, the contact of conventional relays is the voltage that cannot bear AC3000V, two high pressure vacuum tongue tubes are adopted to carry out the task switching of AC3000V and DC2500V in the present embodiment, or carry out the task switching of 500V and 1000V, by the single-chip microcomputer in Survey control module, switching is carried out to the conducting of the first high pressure vacuum tongue tube and the second high pressure vacuum tongue tube or shutoff and control.
In the embodiment of the present invention, the direct supply type adopting auxiliary reclay anticathode high voltage direct current source module to export switches, such as, adopt the auxiliary reclay of band two normally opened contacts to switch DC500V-DC2500V.
As shown in Figure 1, high-voltage power supply handover module also comprises a current-limiting resistance, and this current-limiting resistance is series between auxiliary reclay and the first high pressure vacuum tongue tube, and for when load short circuits, the output of proving installation is not transshipped.The two ends of this current-limiting resistance are parallel with by-pass switch, for carry out Insulation test or ac voltage withstanding test time by current-limiting resistance short circuit,
2, negative polarity high voltage direct current source module
Comprise the first switch power module, second switch power module and high-tension transformer.Be specially:
The secondary side of high-tension transformer comprises three-phase high-voltage winding, and the Same Name of Ends of this three-phase high-voltage winding is reversed polarity coiling, to export voltage opposite polarity with the primary side of high-tension transformer;
First switch power module, for exporting+24V power supply, powers to proving installation; Second switch power module, for exporting+5V power supply, powers to proving installation.As shown in Figure 2, the first switch power module adopts model to be the switching power source chip of TOP224, and second switch power module adopts model to be the switching power source chip of LM2576.
In the present embodiment, the course of work of negative polarity high voltage direct current source module is:
(1) on the segmented magnetic core skeleton of high-tension transformer EB1, be wound with three high pressure windings of the public end of band, the Same Name of Ends of three high pressure windings, by reversed polarity coiling, can obtain and a winding through reverse rectification, i.e. winding 3, winding 4 and winding 5, proportional voltage exports.
(2)+24V power supply is the primary feedback power supply of negative polarity high voltage direct current source module, this primary feedback power supply comprises TOP224 chip and peripheral circuit thereof, as shown in Figure 2, described peripheral circuit comprises the winding 1 of high-tension transformer E B1, winding 2, controllable accurate stabilized voltage supply TL431, linear optical coupling U2, sampling resistor R3 and sampling resistor R5.
(3)+5V power supply is the accessory power supply of negative polarity high voltage direct current source module, and this accessory power supply comprises LM2576 chip.
3, industrial frequency AC voltage regulating module
Comprise pressure regulator and stepup transformer.Be specially:
One end of pressure regulator is connected with AC power, and the other end is connected with stepup transformer; In the present embodiment, pressure regulator is also provided with touching switch, the initial position for the adjusting pressuring handle ensureing pressure regulator remains on no-voltage position, to make pressure regulator pressure regulation from zero point, avoids pressure regulator handle not pressurize in the mistake of zero-bit; The other end of stepup transformer is connected with the second high pressure vacuum tongue tube of high-voltage power supply handover module.
In the present embodiment, adopt the pressure regulator of a 200VA and the stepup transformer of a 150VA.
4, Survey control module
Comprise control module and measuring unit.Be specially:
(1) measuring unit
Comprise the first resistance branch and the second resistance branch.
First resistance branch and the second resistance branch form by two resistant series; One end of first resistance branch is connected with the output terminal of the auxiliary reclay of high-voltage power supply handover module, and one end of the second resistance branch is connected between industrial frequency AC voltage regulating module and the second high pressure vacuum tongue tube; The other end of the first resistance branch is all connected with stake resistance with the other end of the second resistance branch;
(2) control module
Comprise single-chip microcomputer and interface, wherein single-chip microcomputer is for controlling conducting and the disconnection of auxiliary reclay, the first high pressure vacuum tongue tube and the second high pressure vacuum tongue tube.In the present embodiment, interface comprises five interfaces, is specially:
An interface is connected with the tie point of two resistance in the first resistance branch, gathers the DC voltage that negative polarity high voltage direct current source module exports; An interface is connected with the tie point of two resistance in the second resistance branch, gathers the alternating voltage that industrial frequency AC voltage regulating module exports; An interface is connected with stake resistance, gathers the leakage current of negative polarity high voltage direct current source module and the output of industrial frequency AC voltage regulating module; An interface is connected with the selector switch of control panel, gathers the positional information of selector switch; An interface is connected with the display of control panel, exports DC voltage, alternating voltage and leakage current.
5, control panel
Comprise selector switch, display module, voltage output module, open/stop button and ground connection binding post.Be specially:
Selector switch is waver, and a gear is for starting Insulation test, and a gear is for starting ac voltage withstanding test, and a gear is for disconnecting Insulation test or disconnecting ac voltage withstanding test; In the present embodiment, selector switch adopts 4 cutter 5 grades of waveres, respectively mark upper " Insulation test ", "off", " ac voltage withstanding " third gear.At the gear of " Insulation test ", be divided into again " 500V ", " 1000V " " 2500V " third gear.Selector switch gives Survey control module current position state, also can switch the auxiliary reclay in high-voltage power supply handover module simultaneously, switches " 500V ", " 1000V " " 2500V " voltage.
Display, for showing the data message of Insulation test and ac voltage withstanding test, the data message in the present embodiment comprises DC voltage, the alternating voltage of industrial frequency AC voltage regulating module output and the leakage current of high-voltage power supply handover module output that negative polarity high voltage direct current source module exports.
Voltage output module is high-voltage connector, and for connecting equipment under test, in the present embodiment, voltage output module adopts the high-voltage connector that can bear AC10000V.
Open/stop button, for starting or stoping proving installation.
Finally should be noted that: described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
Claims (9)
1. integration insulation, pressure resistant testing device, it is characterized in that, described device comprises control panel, and the negative polarity high voltage direct current source module, industrial frequency AC voltage regulating module and the Survey control module that are connected with high-voltage power supply handover module respectively; Described control panel comprises selector switch, display and voltage output module; Described high-voltage power supply handover module comprises auxiliary reclay, the first high pressure vacuum tongue tube and the second high pressure vacuum tongue tube; Described negative polarity high voltage direct current source module comprises the first switch power module, second switch power module and high-tension transformer; Described industrial frequency AC voltage regulating module comprises pressure regulator and stepup transformer; Described Survey control module comprises control module and measuring unit; Survey control module is also connected with control panel.
2. device as claimed in claim 1, it is characterized in that, the auxiliary reclay of described high-voltage power supply handover module, its input end is connected with the output terminal of negative polarity high voltage direct current source module, an output terminal of auxiliary reclay is connected with the first high pressure vacuum tongue tube, another output terminal and described Survey control model calling; The other end of described first high pressure vacuum tongue tube accesses the voltage output module of described control panel; A branch road of described second high pressure vacuum tongue tube one end is connected with described industrial frequency AC voltage regulating module, and a branch road and described Survey control model calling, the other end accesses the voltage output module of described control panel.
3. device as claimed in claim 1, it is characterized in that, the high-tension transformer of described negative polarity high voltage direct current source module, its secondary side comprises three-phase high-voltage winding, the Same Name of Ends of described three-phase high-voltage winding is reversed polarity coiling, to export voltage opposite polarity with the primary side of high-tension transformer; Described first switch power module, for exporting+24V power supply; Described second switch power module, for exporting+5V power supply.
4. device as claimed in claim 1 or 2, it is characterized in that, the pressure regulator of described industrial frequency AC voltage regulating module, its one end is connected with AC power, and the other end is connected with described stepup transformer; The other end of stepup transformer is connected with the second high pressure vacuum tongue tube of described high-voltage power supply handover module.
5. device as claimed in claim 1 or 2, it is characterized in that, the measuring unit of described Survey control module comprises the first resistance branch and the second resistance branch; Described first resistance branch and the second resistance branch form by two resistant series; One end of first resistance branch is connected with the output terminal of the auxiliary reclay of described high-voltage power supply handover module, and one end of the second resistance branch is connected between described industrial frequency AC voltage regulating module and described second high pressure vacuum tongue tube; The other end of described first resistance branch is all connected with stake resistance with the other end of the second resistance branch; The control module of described Survey control module comprises single-chip microcomputer, for control described high-voltage power supply handover module the conducting of auxiliary reclay, the first high pressure vacuum tongue tube and the second high pressure vacuum tongue tube and disconnection.
6. device as claimed in claim 5, is characterized in that, described control module, comprises three interfaces:
An interface is connected with the tie point of two resistance in the first resistance branch, gathers the DC voltage that negative polarity high voltage direct current source module exports; An interface is connected with the tie point of two resistance in the second resistance branch, gathers the alternating voltage that industrial frequency AC voltage regulating module exports; An interface is connected with described stake resistance, gathers the leakage current of negative polarity high voltage direct current source module and the output of industrial frequency AC voltage regulating module.
7. device as claimed in claim 5, is characterized in that, described control module, also comprises two interfaces:
An interface is connected with the selector switch of control panel, gathers the positional information of described selector switch;
An interface is connected with the display of control panel, exports DC voltage, alternating voltage and leakage current.
8. device as claimed in claim 1, is characterized in that, in described control panel:
Described selector switch is waver, and a gear is for starting Insulation test, and a gear is for starting ac voltage withstanding test, and a gear is for disconnecting Insulation test or disconnecting ac voltage withstanding test;
Described display, for showing the data message of Insulation test and ac voltage withstanding test;
Described voltage output module is high-voltage connector, for connecting equipment under test.
9. device as claimed in claim 8, is characterized in that, described control panel also comprises and opens/stop button and ground connection binding post; Describedly open/stop button, for starting or stoping described device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520303349.2U CN204536484U (en) | 2015-05-12 | 2015-05-12 | Integration insulation, pressure resistant testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520303349.2U CN204536484U (en) | 2015-05-12 | 2015-05-12 | Integration insulation, pressure resistant testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204536484U true CN204536484U (en) | 2015-08-05 |
Family
ID=53750470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520303349.2U Active CN204536484U (en) | 2015-05-12 | 2015-05-12 | Integration insulation, pressure resistant testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204536484U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699708A (en) * | 2016-02-16 | 2016-06-22 | 常州同惠电子股份有限公司 | Multifunctional test system for wire coiling assembly |
| CN106019193A (en) * | 2016-06-29 | 2016-10-12 | 上海正泰太阳能科技有限公司 | Integrated point inspection device of voltage-withstand-voltage and grounding impedance tester |
| CN107064853A (en) * | 2017-03-23 | 2017-08-18 | 山东电力研究院 | Electric energy meter pressure-resistant test system and method with test voltage automatic switching function |
| CN107783029A (en) * | 2017-11-17 | 2018-03-09 | 深圳市太美亚电子科技有限公司 | A kind of electronic cigarette PCBA test system and method for testing |
| CN108196173A (en) * | 2018-01-29 | 2018-06-22 | 中国工程物理研究院电子工程研究所 | Test device for insulation resistance and method |
| CN108872912A (en) * | 2018-08-28 | 2018-11-23 | 中车兰州机车有限公司 | The test device of power locomotive top insulation detection device |
| CN109217871A (en) * | 2017-06-30 | 2019-01-15 | 宁德时代新能源科技股份有限公司 | Sampling control circuit |
| CN111929533A (en) * | 2020-08-10 | 2020-11-13 | 国网上海市电力公司 | Multifunctional cable sheath direct current testing device |
| CN113567799A (en) * | 2021-09-28 | 2021-10-29 | 广东电网有限责任公司中山供电局 | 10kV capacitor integrated test device and test method thereof |
-
2015
- 2015-05-12 CN CN201520303349.2U patent/CN204536484U/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699708B (en) * | 2016-02-16 | 2019-02-19 | 常州同惠电子股份有限公司 | A kind of multifunctional test system for wire-winding unit |
| CN105699708A (en) * | 2016-02-16 | 2016-06-22 | 常州同惠电子股份有限公司 | Multifunctional test system for wire coiling assembly |
| CN106019193A (en) * | 2016-06-29 | 2016-10-12 | 上海正泰太阳能科技有限公司 | Integrated point inspection device of voltage-withstand-voltage and grounding impedance tester |
| CN106019193B (en) * | 2016-06-29 | 2019-11-26 | 海宁正泰新能源科技有限公司 | Integrated point inspection device of voltage-withstand-voltage and grounding impedance tester |
| CN107064853A (en) * | 2017-03-23 | 2017-08-18 | 山东电力研究院 | Electric energy meter pressure-resistant test system and method with test voltage automatic switching function |
| CN109217871B (en) * | 2017-06-30 | 2022-07-08 | 宁德时代新能源科技股份有限公司 | Sampling control circuit |
| CN109217871A (en) * | 2017-06-30 | 2019-01-15 | 宁德时代新能源科技股份有限公司 | Sampling control circuit |
| CN107783029A (en) * | 2017-11-17 | 2018-03-09 | 深圳市太美亚电子科技有限公司 | A kind of electronic cigarette PCBA test system and method for testing |
| CN107783029B (en) * | 2017-11-17 | 2023-11-03 | 深圳市太美亚电子科技有限公司 | Test system and test method for PCBA (printed circuit board assembly) |
| CN108196173A (en) * | 2018-01-29 | 2018-06-22 | 中国工程物理研究院电子工程研究所 | Test device for insulation resistance and method |
| CN108872912A (en) * | 2018-08-28 | 2018-11-23 | 中车兰州机车有限公司 | The test device of power locomotive top insulation detection device |
| CN111929533A (en) * | 2020-08-10 | 2020-11-13 | 国网上海市电力公司 | Multifunctional cable sheath direct current testing device |
| CN111929533B (en) * | 2020-08-10 | 2023-11-21 | 国网上海市电力公司 | Multifunctional cable sheath direct current testing device |
| CN113567799A (en) * | 2021-09-28 | 2021-10-29 | 广东电网有限责任公司中山供电局 | 10kV capacitor integrated test device and test method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204536484U (en) | Integration insulation, pressure resistant testing device | |
| CN203838286U (en) | Current transformer polarity tester | |
| CN101477150B (en) | Method for implementing fast measurement of inductive winding DC resistance by using constant voltage source | |
| CN102707173A (en) | Tester | |
| CA2784338A1 (en) | Wiring tester of multifunctional electric energy metering device | |
| CN101782638B (en) | Calibration device and method capable of measuring multiple current transformers once | |
| CN106443561B (en) | Integral inspection method and device for electric energy metering device with voltage of 35kV or below | |
| CN203479934U (en) | Vehicle-mounted integrated testing system for transformer | |
| CN111239652A (en) | Polarity testing device for current transformer | |
| CN205070830U (en) | Take crystal oscillator testing capabilities's adjustable D.C. regulated power supply | |
| CN112924920A (en) | Portable measuring device and parameter measuring method for high-voltage electromagnetic voltage transformer | |
| CN203204081U (en) | Tester | |
| CN206057386U (en) | Extra-high voltage regulating compensation no-load transformer and short-circuit test connecting wire switching device | |
| CN207689594U (en) | Power distribution equipment protector multifunctional tester | |
| CN203385805U (en) | Metalized power capacitor rapid aging testing device | |
| CN201210170Y (en) | Multifunctional electric grid examine integrated tester | |
| CN201707434U (en) | Full-automatic high-voltage dielectric loss tester verification device | |
| CN201344953Y (en) | Quick measuring instrument for direct-current resistance of inductive coil | |
| CN103954869A (en) | Cable power frequency parameter testing device based on PXI system | |
| CN210665864U (en) | Single-phase grounding capacitance current testing device of high-voltage power grid | |
| CN201637807U (en) | Power frequency leakage current tester | |
| CN204595529U (en) | Two no-load voltage ratio metering intelligent controlling device | |
| CN212622936U (en) | Portable 10kV isolating switch alternating current withstand voltage test device based on wireless control technology | |
| CN103983936B (en) | A kind of single three-phase electric energy meter integration calibration equipment | |
| CN202631640U (en) | Pocket digital milliohmmeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |