CN220525917U - Insulation resistance detection testing device - Google Patents
Insulation resistance detection testing device Download PDFInfo
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- CN220525917U CN220525917U CN202322108687.8U CN202322108687U CN220525917U CN 220525917 U CN220525917 U CN 220525917U CN 202322108687 U CN202322108687 U CN 202322108687U CN 220525917 U CN220525917 U CN 220525917U
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- 238000009413 insulation Methods 0.000 title claims abstract description 91
- 238000001514 detection method Methods 0.000 title claims abstract description 39
- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 81
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 abstract description 19
- 239000004973 liquid crystal related substance Substances 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
The utility model belongs to the technical field of detection, and particularly relates to an insulation resistance detection testing device, which comprises: a switching mechanism, a contactor mechanism, and an insulation resistor; the switch mechanism is connected with the contactor mechanism; one end of the insulation resistor is connected with a product to be tested through the contactor mechanism, and the other end of the insulation resistor is grounded; the switch mechanism is used for controlling the actuation or opening of the contactor mechanism, controlling whether one pole of a product to be tested passes through the insulation resistor and then is grounded so as to detect the resistance value of the insulation resistor, controlling the actuation or opening of the contactor mechanism through a control button switch or a knob switch, controlling whether one pole of the product to be tested passes through the insulation resistor and then is grounded, and connecting a resistor with a known resistance value between the PV+/PV-of the photovoltaic product and the ground or connecting a resistor with a known resistance value between the BATTERY+/BATTERY-of the energy storage product and the ground in series can be achieved, so that the efficiency of detecting the insulation resistor of the product is improved, and the safety risk during testing is reduced.
Description
Technical Field
The utility model belongs to the technical field of detection, and particularly relates to an insulation resistance detection testing device.
Background
Along with the development of new energy industry and related emission reduction policies of China, the demands of the market on photovoltaic inverters and energy storage converters are increasing, and a plurality of photovoltaic and energy storage enterprises all have self-lapping photovoltaic inverters and energy storage converters. Considering the safety of the photovoltaic product or the energy storage product in application, the photovoltaic product or the energy storage product has an insulation resistance detection function, and the safety accident caused by the grounding of a circuit of the system is prevented. With the development of technology, 1500V systems are mostly adopted in photovoltaic or energy storage products at present.
When the main current photovoltaic/energy storage product manufacturer tests the insulation resistance of the product, an aluminum shell resistor with a known resistance value is directly connected in series between the photovoltaic product PV+/PV-or the energy storage product BATTERY+/BATTERY-to the ground to verify the insulation resistance detection function of the product.
Along with the progress of technology, the products of the current main current photovoltaic/energy storage product manufacturers all adopt 1500V systems preferentially, and when the insulation resistance detection function of the products is tested, (1) the direct current side is electrified, and when an aluminum shell resistor with a known resistance value is directly connected in series between the photovoltaic product PV+/PV-or the energy storage product BATTERY+/BATTERY-to the ground, the electric shock risk is extremely high; (2) when the direct current side is not electrified, an aluminum shell resistor with a known resistance value is connected in series between the pole pair of the photovoltaic product PV+/PV-or the energy storage product BATTERY+/BATTERY-and then the power is cut off after the power is electrified on the product, the resistor is connected in series on the other pole to test the function of the insulation resistance of the other pole to the ground, and the test efficiency is lower.
Therefore, a new insulation resistance detection test device needs to be designed based on the technical problems.
Disclosure of Invention
The utility model aims to provide an insulation resistance detection testing device so as to solve at least one technical problem.
In order to solve the above technical problems, the present utility model provides an insulation resistance detection test device, including:
a switching mechanism, a contactor mechanism, and an insulation resistor;
the switch mechanism is connected with the contactor mechanism;
one end of the insulation resistor is connected with a product to be tested through the contactor mechanism, and the other end of the insulation resistor is grounded;
the switch mechanism is used for controlling the suction or opening of the contactor mechanism, controlling whether one pole of the product to be tested passes through the insulation resistor and then is grounded, so as to detect the resistance value of the insulation resistor.
Further, the insulation resistance detection test device further includes: a display module;
the display module is used for displaying the insulation resistance value detected when one pole of the product to be tested passes through the insulation resistance and then is grounded.
Further, the insulation resistance detection test device further includes: a power module;
the power module is adapted to supply power to the switching mechanism and the contactor mechanism.
Further, the power module is adapted to employ an AC/DC module.
Further, the switching mechanism includes: a first push button switch and a second push button switch;
the first button switch is connected with the contactor mechanism;
the second push button switch is connected with the contactor mechanism.
Further, the contactor mechanism includes: a first contactor and a second contactor;
the normally closed node of the first contactor is connected with the coil of the second contactor in series;
the normally closed node of the second contactor is connected with the coil of the first contactor in series;
the first button switch is connected with a normally closed node of the second contactor;
the second button switch is connected with a normally closed node of the first contactor;
the first button switch, the second button switch, the first contactor and the second contactor are all connected with the power module.
Further, the switching mechanism includes: a knob switch;
the knob switch is connected with the contactor mechanism;
the knob switch is provided with three gears.
Further, the contactor mechanism includes: a first contactor and a second contactor;
the normally closed node of the first contactor is connected with the coil of the second contactor in series;
the normally closed node of the second contactor is connected with the coil of the first contactor in series;
the first gear of the knob switch is connected with a solenoid of the first contactor;
the second gear of the knob switch is connected with a coil of the second contactor;
the zeroth gear of the knob switch is connected with the power supply module;
the first contactor and the second contactor are connected with the power module.
Further, the insulation resistance comprises an aluminum case resistance.
Further, the switch mechanism, the contactor mechanism, the product to be tested, the insulation resistor and the power module are all arranged in the direct-current output cabinet.
The utility model has the beneficial effects that the utility model adopts the switch mechanism, the contactor mechanism and the insulation resistor; the switch mechanism is connected with the contactor mechanism; one end of the insulation resistor is connected with a product to be tested through the contactor mechanism, and the other end of the insulation resistor is grounded; the switch mechanism is suitable for controlling the suction or opening of the contactor mechanism, and controlling whether one pole of the product to be tested passes through the insulation resistor and then is grounded so as to detect the resistance value of the insulation resistor; the control of the suction or opening of the contactor mechanism is realized by controlling a button switch or a knob switch, and whether one pole of a product to be tested passes through the insulation resistor and then is grounded is realized, so that a resistor with a known resistance value is connected in series between the photovoltaic product PV+/PV-and the ground or a resistor with a known resistance value is connected in series between the energy storage product BATTERY+/BATTERY-and the ground; the efficiency of product insulation resistance detection is improved, and the safety risk during testing is reduced.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic block diagram of an insulation resistance detection test apparatus of the present utility model;
FIG. 2 is a schematic block diagram of a push button version of an insulation resistance testing device of the present utility model;
fig. 3 is a schematic block diagram of a rotary switch version of an insulation resistance detection test device of the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 to 3, the present embodiment provides an insulation resistance detection test apparatus, including: a switching mechanism, a contactor mechanism, and an insulation resistor; the product to be tested can be, but is not limited to, photovoltaic products, batteriy, etc.; the switch mechanism is connected with the contactor mechanism; one end of the insulation resistor is connected with a product to be tested through the contactor mechanism, and the other end of the insulation resistor is grounded; the switch mechanism is suitable for controlling the suction or opening of the contactor mechanism, and controlling whether one pole of the product to be tested passes through the insulation resistor and then is grounded so as to detect the resistance value of the insulation resistor; the control of the suction or opening of the contactor mechanism is realized by controlling a button switch or a knob switch, and whether one pole of a product to be tested passes through the insulation resistor and then is grounded is realized, so that a resistor with a known resistance value is connected in series between the photovoltaic product PV+/PV-and the ground or a resistor with a known resistance value is connected in series between the energy storage product BATTERY+/BATTERY-and the ground; the efficiency of product insulation resistance detection is improved, and the safety risk during testing is reduced.
In this embodiment, the insulation resistance detection test apparatus further includes: a display module; the display module is used for displaying the insulation resistance value detected when one pole of the product to be detected passes through the insulation resistance and then is grounded; the display module can be a display screen or a liquid crystal screen of an upper computer of the PCS.
In this embodiment, the insulation resistance detection test apparatus further includes: a power module; the power module is adapted to supply power to the switching mechanism and the contactor mechanism; the power supply module is suitable for an AC/DC module, can convert alternating current into direct current, and the direct current is 24V and 0V, so that the power supply for the switching mechanism and the contactor mechanism is facilitated; power may be supplied to the power module via a high voltage cable.
In this embodiment, the insulation resistance detection test device has two versions, one is a push button switch version and the other is a knob switch version.
In this embodiment, the button switch version, the switch mechanism includes: a first push button switch S1 and a second push button switch S1; the first button switch is connected with the contactor mechanism; the second button switch is connected with the contactor mechanism; the contactor mechanism includes: a first contactor KM1 and a second contactor KM2; the normally closed node of the first contactor is connected with the coil of the second contactor in series; the normally closed node of the second contactor is connected with the coil of the first contactor in series; the first button switch is connected with a normally closed node of the second contactor; the second button switch is connected with a normally closed node of the first contactor; the first button switch, the second button switch, the first contactor and the second contactor are all connected with the power supply module; the specific connection mode is shown in fig. 2, wherein the KM1 contactor (a first contactor KM 1) and the KM2 contactor (a second contactor KM 2) are interlocked through a node, and only one of the KM1 and KM2 contactors can be attracted at the same time; pressing an S1 button switch, wherein 24V power supply supplies power to a KM1 (first contactor KM 1) coil A1 through a KM2 (second contactor KM 2) normally closed node, 0V is directly arranged on the KM1 coil A2, at the moment, KM1 is attracted, a resistor (insulation resistor) with a known resistance value is connected in series between an energy storage product BATTERY+ and the ground, and the BATTERY+ insulation resistance detection value of the PCS product is checked through an upper computer or a liquid crystal screen of the PCS to be compared with the known resistance value, so that the insulation detection function of the PCS product is verified; the S2 button switch is pressed down, 24V power is supplied to the KM2 coil A1 through the KM1 normally closed node, 0V is directly connected to the KM2 coil A2 in an attracting mode, a resistor with a known resistance value is connected in series between an energy storage product BATTERY-and the ground, and the BATTERY-ground insulation resistance detection value of the PCS product is checked through an upper computer or a liquid crystal screen of the PCS to be compared with the resistance value of the known resistor, so that the insulation detection function of the PCS product is verified.
In this embodiment, the knob switch version, the switch mechanism includes: a knob switch SA; the knob switch is connected with the contactor mechanism; the knob switch is provided with three gears; the contactor mechanism includes: a first contactor and a second contactor; the normally closed node of the first contactor is connected with the coil of the second contactor in series; the normally closed node of the second contactor is connected with the coil of the first contactor in series; the first gear (1 gear) of the knob switch is connected with a solenoid of the first contactor; the second gear (2 gear) of the knob switch is connected with a coil of the second contactor; the zeroth gear (0 gear) of the knob switch is connected with the power supply module; the first contactor and the second contactor are connected with the power supply module; the specific connection mode is schematically shown in fig. 3, the knob switch SA has three gears, two contactors of the 0 gear are not operated, the 1 gear controls the operation of the KM1 contactor, and the 2 gear controls the operation of the KM2 contactor; the knob switch SA rotates to a1 gear, a KM1 contactor coil is electrified, the KM1 contactor is attracted, a resistor with a known resistance value is connected in series between an energy storage product BATTERY+ and the ground, and the detection value of the BATTERY+ ground insulation resistance of the PCS product is checked through an upper computer or a liquid crystal screen of the PCS to be compared with the resistance value of the known resistor, so that the insulation detection function of the PCS product is verified; the knob switch SA rotates to a2 gear, a KM2 contactor coil is electrified, the KM2 contactor is attracted, a resistor with a known resistance value is connected in series between an energy storage product BATTERY-and the ground, and the BATTERY-to-ground insulation resistance detection value of the PCS product is checked through an upper computer or a liquid crystal screen of the PCS to be compared with the resistance value of the known resistor, so that the insulation detection function of the PCS product is verified.
In this embodiment, the insulation resistance is suitably an aluminum case resistance.
In this embodiment, the switch mechanism, the contactor mechanism, the product to be tested, the high-voltage cable, the insulation resistor and the power module are all disposed in the dc output cabinet, so as to facilitate installation.
In summary, the utility model is provided with a switch mechanism, a contactor mechanism and an insulation resistor; the switch mechanism is connected with the contactor mechanism; one end of the insulation resistor is connected with a product to be tested through the contactor mechanism, and the other end of the insulation resistor is grounded; the switch mechanism is suitable for controlling the suction or opening of the contactor mechanism and controlling whether one pole of the product to be tested passes through the insulation resistor and then is grounded; the control of the suction or opening of the contactor mechanism is realized by controlling a button switch or a knob switch, and whether one pole of a product to be tested passes through the insulation resistor and then is grounded is realized, so that a resistor with a known resistance value is connected in series between the photovoltaic product PV+/PV-and the ground or a resistor with a known resistance value is connected in series between the energy storage product BATTERY+/BATTERY-and the ground; the efficiency of product insulation resistance detection is improved, and the safety risk during testing is reduced.
The components (components not illustrating specific structures) selected in the application are all common standard components or components known to those skilled in the art, and the structures and principles of the components are all known to those skilled in the art through technical manuals or through routine experimental methods.
The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present utility model may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. An insulation resistance detection test device, characterized by comprising:
a switching mechanism, a contactor mechanism, and an insulation resistor;
the switch mechanism is connected with the contactor mechanism;
one end of the insulation resistor is connected with a product to be tested through the contactor mechanism, and the other end of the insulation resistor is grounded;
the switch mechanism is used for controlling the suction or opening of the contactor mechanism, controlling whether one pole of the product to be tested passes through the insulation resistor and then is grounded, so as to detect the resistance value of the insulation resistor.
2. The insulation resistance detection test apparatus according to claim 1, wherein,
the insulation resistance detection test device further includes: a display module;
the display module is used for displaying the insulation resistance value detected when one pole of the product to be tested passes through the insulation resistance and then is grounded.
3. The insulation resistance detection test apparatus according to claim 1, wherein,
the insulation resistance detection test device further includes: a power module;
the power module is adapted to supply power to the switching mechanism and the contactor mechanism.
4. The insulation resistance detecting and testing device according to claim 3, wherein,
the power module is adapted to employ an AC/DC module.
5. The insulation resistance detecting and testing device according to claim 3, wherein,
the switching mechanism includes: a first push button switch and a second push button switch;
the first button switch is connected with the contactor mechanism;
the second push button switch is connected with the contactor mechanism.
6. The insulation resistance detection test apparatus according to claim 5, wherein,
the contactor mechanism includes: a first contactor and a second contactor;
the normally closed node of the first contactor is connected with the coil of the second contactor in series;
the normally closed node of the second contactor is connected with the coil of the first contactor in series;
the first button switch is connected with a normally closed node of the second contactor;
the second button switch is connected with a normally closed node of the first contactor;
the first button switch, the second button switch, the first contactor and the second contactor are all connected with the power module.
7. The insulation resistance detecting and testing device according to claim 3, wherein,
the switching mechanism includes: a knob switch;
the knob switch is connected with the contactor mechanism;
the knob switch is provided with three gears.
8. The insulation resistance detection test apparatus according to claim 7, wherein,
the contactor mechanism includes: a first contactor and a second contactor;
the normally closed node of the first contactor is connected with the coil of the second contactor in series;
the normally closed node of the second contactor is connected with the coil of the first contactor in series;
the first gear of the knob switch is connected with a solenoid of the first contactor;
the second gear of the knob switch is connected with a coil of the second contactor;
the zeroth gear of the knob switch is connected with the power supply module;
the first contactor and the second contactor are connected with the power module.
9. The insulation resistance detection test apparatus according to claim 1, wherein,
the insulation resistor comprises an aluminum shell resistor.
10. The insulation resistance detecting and testing device according to claim 3, wherein,
the switch mechanism, the contactor mechanism, the product to be tested, the insulation resistor and the power supply module are all arranged in the direct current output cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322108687.8U CN220525917U (en) | 2023-08-07 | 2023-08-07 | Insulation resistance detection testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322108687.8U CN220525917U (en) | 2023-08-07 | 2023-08-07 | Insulation resistance detection testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220525917U true CN220525917U (en) | 2024-02-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322108687.8U Active CN220525917U (en) | 2023-08-07 | 2023-08-07 | Insulation resistance detection testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220525917U (en) |
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2023
- 2023-08-07 CN CN202322108687.8U patent/CN220525917U/en active Active
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