CN212321755U - Power equipment detection device based on automatic take-up and pay-off and switching wire - Google Patents
Power equipment detection device based on automatic take-up and pay-off and switching wire Download PDFInfo
- Publication number
- CN212321755U CN212321755U CN201922250408.5U CN201922250408U CN212321755U CN 212321755 U CN212321755 U CN 212321755U CN 201922250408 U CN201922250408 U CN 201922250408U CN 212321755 U CN212321755 U CN 212321755U
- Authority
- CN
- China
- Prior art keywords
- switching
- pay
- automatic
- voltage
- wire
- 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
- 238000001514 detection method Methods 0.000 title claims abstract description 66
- 238000012360 testing method Methods 0.000 claims abstract description 107
- 238000004804 winding Methods 0.000 claims abstract description 20
- 238000005070 sampling Methods 0.000 claims description 12
- 230000009466 transformation Effects 0.000 claims description 9
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model belongs to the technical field of power equipment detection and specifically relates to a power equipment detection device based on automatic receive and release line and switching line. The utility model comprises a pay-off and take-up cabinet, a test connecting wire, a flexible detection system, an automatic switching wire device and an automatic pay-off and take-up device; wherein: an automatic switching wire device and an automatic wire take-up and pay-off device are arranged in the take-up and pay-off cabinet; the automatic take-up and pay-off device leads out a test connecting wire from the take-up and pay-off machine cabinet. The utility model discloses simple structure, reasonable in design can realize just accomplishing the several detection project to wiring when power equipment is experimental, need not artificial intervention, guarantees safe, reliable and the accuracy that power equipment detected. The utility model discloses combine flexible detecting system, automatic winding and unwinding devices, automatic switching wire device organic together, realized the full automatization that power equipment detected. The utility model discloses the detection means possess advantages such as wiring, one shot operation, intelligent test, can improve security, reliability and the accuracy in the testing process greatly.
Description
Technical Field
The utility model belongs to the technical field of power equipment detection and specifically relates to a power equipment detection device based on automatic receive and release line and switching line.
Background
The detection of the power equipment is an important part for ensuring the operation safety of the power grid, and the safety, reliability and accuracy of the detection of the power equipment are also important guarantees for the safe and stable operation of the power grid. At present, the power equipment detects mainly for manual detection is main, needs manual switching line, manual receipts and releases the line, and different detection project need different wiring mode, and the degree of artificial influence testing result is very high, and putting of a large amount of instrument equipment and connecting wire has the potential safety hazard simultaneously, is difficult to realize automatic detection.
Disclosure of Invention
To the problem that exists among the above-mentioned prior art, the utility model provides a power equipment detection device based on automatic receive and release line and switching line. The purpose is in order to provide a simple structure, reasonable in design's detection device to can realize the full automatization that power equipment detected, guarantee security, reliability, the accuracy that power equipment detected.
In order to realize the purpose of the utility model, the utility model discloses an adopt following technical scheme to realize:
a power equipment detection device based on automatic winding and unwinding and switching lines comprises a winding and unwinding cabinet, a test connecting line, a flexible detection system, an automatic switching line device and an automatic winding and unwinding device; wherein: an automatic switching wire device and an automatic wire take-up and pay-off device are arranged in the take-up and pay-off cabinet; the automatic take-up and pay-off device leads out a test connecting wire from the take-up and pay-off machine cabinet; the flexible system is integrated in a central computer stored in the pay-off and take-up cabinet, and the flexible detection system is connected with the automatic pay-off and take-up device through a local area network.
The test connecting wire is introduced into the automatic wire winding and unwinding device by the automatic switching wire device; test connecting lines led by the switching line device are gathered in a take-up and pay-off cabinet, and the test connecting lines are led out by the take-up and pay-off cabinet; the flexible detection system is connected with the automatic take-up and pay-off device through a local area network.
The automatic wire winding and unwinding device is provided with a PLC, a relay, a bearing motor and a test wire coil, wherein the relay is connected with the bearing motor, and the bearing motor is connected with the test wire coil.
The test wire coil comprises an A-phase test wire coil, a B-phase test wire coil and a C-phase test wire coil, and the test wire coil is connected with a test connecting wire.
The automatic switching line device comprises two cabinets, namely a high-voltage switching line device and a low-voltage switching line device.
The high-voltage switching line device comprises: the high-voltage current switching and switching relay K1 and the high-voltage switching and switching relay K2 are respectively used for controlling the connection of the high-voltage side voltage or current of the instrument; the high-voltage testing device further comprises a direct-resistance high-voltage control relay K4, a transformation ratio high-voltage control relay K5, a parameter changer high-voltage control relay K6 and a load switch tester high-voltage side control relay K7, wherein the K4-K7 are respectively used for switching different testing items.
The low-voltage switching line device includes: the sampling module control relay K3, the direct resistance low-voltage control relay K8, the transformation ratio low-voltage control relay K9 and the transformation parameter instrument low-voltage control relay K10; the low-voltage switching device is used for a short-circuit low-voltage coil during load loss test, when short circuit is needed, the sampling module controls the relay K3 to be closed, short circuit is achieved, and the current detection unit monitors short-circuit current.
The high-voltage current switching-on and switching-off relay K1, the high-voltage switching-on and switching-off relay K2 and the test connecting wires led out from the sampling module control relay K3 are connected to the high-voltage side and the low-voltage side of the tested product at the same time; when a direct resistance test is carried out, a control signal sent by the flexible system is transmitted to the automatic switching device, the high-voltage current on-off relay K1, the high-voltage on-off relay K2 and the sampling module control relay K3 in the high-low voltage switching device are closed, and the direct resistance high-voltage control relay K4 and the direct resistance low-voltage control relay K8 are closed, so that the connection between a direct resistance instrument and a tested product is realized, the direct resistance test is carried out, and the disconnection of an electric appliance after the test is completed; and when different tests are carried out, the corresponding relays are closed, and the corresponding tests are completed.
The flexible detection system is connected with a PLC in the automatic wire winding and unwinding device through a local area network.
Compared with the prior art, the utility model, have following advantage and beneficial technological effect:
the utility model provides a simple structure, reasonable in design's detection device can realize just accomplishing the several detection project to wiring when power equipment is experimental, need not artificial intervention, guarantees safety, reliable and the accuracy that power equipment detected. The utility model discloses combine flexible detecting system, automatic winding and unwinding devices, automatic switching wire device organic together, realized the full automatization that power equipment detected.
The flexible detection system is an intelligent detection system capable of automatically providing a detection scheme according to the types of materials and detection requirements. The flexible detection system is in a production line mode, various electrical test items are organically softened on the same production line, control, measurement, analysis and management of test data and final generation of a detection report of various test items can be automatically completed, and the mode of a single type of traditional electrical test is thoroughly changed. The automatic take-up and pay-off device is used for automatically lowering the test wire set required by the test article by the system, and after the test is finished and the wire is withdrawn by a tester, the system automatically takes back the wire set upwards. The automatic switching line device is divided into two cabinet designs, a high-voltage switching line device and a low-voltage switching line device. After a detected sample enters a detection station, the high-voltage terminal and the low-voltage terminal are connected with the output terminals of the high-voltage switching wire device and the low-voltage switching wire device in a one-to-one correspondence mode, the switching wire device is automatically started by the flexible detection system according to test items detected by the sample, manual operation is not needed by automatic wire switching, and all tests can be completed by one-time wiring.
The utility model discloses compare with traditional detection means and possess advantages such as wiring, one shot operation, intelligent test. The safety, reliability and accuracy in the detection process are greatly improved.
Drawings
To facilitate understanding and implementing the present invention by those of ordinary skill in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, but it should be understood that the scope of the present invention is not limited by the specific embodiments.
Fig. 1 is a schematic view of the automatic winding and unwinding device of the present invention;
fig. 2 is a schematic diagram of the automatic line switching device of the present invention.
FIG. 3 is a schematic diagram of the flexible detection system controlling the automatic switching line and the take-up and pay-off device of the present invention;
fig. 4 is a schematic structural view of the automatic winding and unwinding device of the present invention.
In the figure: the device comprises a take-up and pay-off cabinet 1, a test connecting wire 2, a flexible detection system 11, an automatic switching wire device 12 and an automatic take-up and pay-off device 13.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model relates to a power equipment detection device based on automatic receive and release line and switching wire, as shown in FIG. 1, FIG. 1 is the utility model discloses automatic receive and release line device's signal. The utility model discloses a receive and release line rack 1, experimental connecting wire 2, flexible detecting system 11, automatic switch-over line device 12 and automatic receive and release line device 13. Wherein: an automatic switching device 12 and an automatic take-up and pay-off device 13 are arranged in the take-up and pay-off cabinet 1.
The automatic take-up and pay-off device 13 leads out the test connecting wire 2 from the take-up and pay-off cabinet 1.
The automatic take-up and pay-off device 13 is internally provided with a PLC, a relay, a bearing motor and a test wire coil, wherein the relay is connected with the bearing motor, and the bearing motor drives the test wire coil. The test wire coil comprises an A-phase test wire coil, a B-phase test wire coil and a C-phase test wire coil, and the test wire coil is connected with a test connecting wire 2.
After the sample is in place, the flexible detection system 11 controls the transmission of a control signal to the take-up and pay-off cabinet, the automatic take-up and pay-off device 13 in the take-up and pay-off cabinet 1 operates after receiving the signal, and the test connecting wire 2 is paid off; meanwhile, the flexible detection system 11 transmits control signals to the automatic switching line device 12 according to different test items, and the automatic switching line device 12 selects the on-off of different test lines according to different signal actions so as to meet the requirements of different tests; after all tests are finished, the flexible detection system 11 controls the transmission of control signals to the take-up and pay-off cabinet 1, and the automatic take-up and pay-off device 13 in the take-up and pay-off cabinet 1 runs after receiving the signals to take up and pay off the test connecting wires.
As shown in fig. 4, fig. 4 is a schematic structural view of the automatic winding and unwinding device of the present invention. The automatic take-up and pay-off device 13 is arranged in the take-up and pay-off cabinet 1, and two test connecting wires 2 are led out from the take-up and pay-off cabinet 1. The test connection line 2 is a test connection line which is introduced into the automatic take-up and pay-off device 13 by the automatic switching line device 12. The test connecting wires 2 introduced by the switching wire device 12 are collected in the take-up and pay-off cabinet 1, and then the test connecting wires 2 are led out from the take-up and pay-off cabinet 1 to be connected with the tested object.
The automatic winding and unwinding device 13 is located on a special overhaul channel above a detection station, after the detected equipment is transported to the detection station, the automatic winding and unwinding device 13 can automatically put down a detection item test line required to be carried out by the detected equipment at the detection station, test personnel can be prevented from selecting a wrong test line, and after the test is finished, the automatic winding and unwinding device 13 automatically winds up the test line.
The flexible system 11 is integrated in a central computer stored in the pay-off and take-up machine cabinet 1, and the flexible system sends out an instruction to other equipment in the machine cabinet 1 through the central computer.
The flexible detection system 11 transmits a control signal to a PLC (programmable logic controller) in the automatic winding and unwinding device 13 through a local area network communication protocol, the PLC receives the signal and then controls a relay to supply power, a bearing motor is attracted to start after the relay supplies power, the bearing motor rotates to respectively drive an A-phase test line wire coil, a B-phase test line wire coil and a C-phase test line wire coil to rotate, and the test connecting wire 2 is wound and unwound along the wire coils.
As shown in fig. 3, fig. 3 is a schematic diagram of the flexible detection system controlling the automatic switching line and the winding and unwinding device according to the present invention. The utility model discloses flexible detecting system 11 is software and hardware combination system, and the main control computer passes through local area network and transmits control signal to experimental in the middle of, and after experimental station received the signal, according to the predetermined procedure through local area network with control signal transmission to automatic switch-over line device 12 and automatic take-up and pay-off 13 in the middle of, the signal that automatic switch-over line device 12 and automatic take-up and pay-off 13 gathered returns through the same channel in the middle of for flexible detecting system 11. The flexible detection system 11 integrates multiple professional tests in one station in a server control mode, and automatic detection is realized through different devices.
As shown in fig. 2, fig. 2 is a schematic diagram of the automatic line switching device according to the present invention. The automatic switching line device 12 includes two cabinets, which are a high voltage switching line device and a low voltage switching line device, respectively. Which comprises the following steps: the high-voltage current switching relay K1, the high-voltage switching relay K2, the sampling module control relay K3, the direct-resistance high-voltage control relay K4, the transformation ratio high-voltage control relay K5, the transformation parameter instrument high-voltage control relay K6, the on-load switch tester high-voltage side control relay K7 and the on-load switch tester high-voltage side control relay K7 are reserved; a direct resistance low-voltage control relay K8, a transformation ratio low-voltage control relay K9 and a parameter transformer low-voltage control relay K10.
The high-voltage switching wire of the automatic switching wire device is provided with a high-voltage current switching relay K1 and a high-voltage switching relay K2 for controlling the connection of the voltage or current of the high-voltage side of the instrument respectively because the high-voltage end has high-voltage output during a no-load test. The high-voltage side switch groups K4-K7 are respectively used for switching different test items.
The low-voltage switching device of the automatic switching wire device is used for short-circuiting a low-voltage coil during a load loss test, and because the impedance of a short-circuit lead wire can influence a measurement result, a voltage and current detection unit is designed for detecting the additional loss of the measurement lead wire, and the error caused by the measurement lead wire can be automatically deducted under the cooperation of software. When short circuit is needed, the sampling module controls the relay K3 to be closed, short circuit is achieved, and the current detection unit monitors short circuit current.
All test current lines and voltage lines are separated, so that the influence of the length of the test lines on test results in the test process is avoided.
And test connecting wires led out from the high-voltage current switching relay K1, the high-voltage switching relay K2 and the sampling module control relay K3 are simultaneously connected to the high-voltage side and the low-voltage side of the tested product. When a direct resistance test is carried out, a control signal sent by the flexible system is transmitted to the automatic switching device, the high-voltage current switching-on and switching-off relay K1, the high-voltage switching-on and switching-off relay K2 and the sampling module control relay K3 in the high-voltage and low-voltage switching device are switched on, and the direct resistance high-voltage control relay K4 and the direct resistance low-voltage control relay K8 are switched on, so that the connection between a direct resistance instrument and a tested product is realized, the direct resistance test is carried out, and the subsequent electric appliance disconnection of the test is completed. And when different tests are carried out, the corresponding relays are closed, and the corresponding tests are completed.
During the empty load test, the flexible detection system 11 sends control signals to the three-phase variable frequency power supply and the parameter testing module, the three-phase variable frequency power supply and the parameter testing module are started, the testing module controls the power supply to output corresponding voltage and current according to parameters of a tested object, and the voltage and the current are conveyed to the tested object through the automatic switching line device 12.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (9)
1. The utility model provides an electrical equipment detection device based on receive and release line and switching wire automatically, characterized by: the device comprises a take-up and pay-off cabinet (1), a test connecting wire (2), a flexible detection system (11), an automatic switching wire device (12) and an automatic take-up and pay-off device (13); wherein: an automatic switching line device (12) and an automatic winding and unwinding device (13) are arranged in the winding and unwinding cabinet (1); the automatic take-up and pay-off device (13) leads out a test connecting wire (2) from the take-up and pay-off cabinet (1); the flexible detection system (11) is integrated in a central computer stored in the pay-off and take-up cabinet (1), and the flexible detection system (11) is connected with the automatic pay-off and take-up device (13) through a local area network.
2. The electrical equipment detection device based on the automatic take-up and pay-off and switching wire as claimed in claim 1, wherein: the test connecting wire (2) is introduced into the automatic take-up and pay-off device (13) by the automatic switching device (12); test connecting wires (2) led in by the switching wire device (12) are gathered in the take-up and pay-off cabinet (1), and the test connecting wires (2) are led out by the take-up and pay-off cabinet (1); the flexible detection system (11) is connected with an automatic take-up and pay-off device (13) through a local area network.
3. The electrical equipment detection device based on the automatic take-up and pay-off and switching wire as claimed in claim 1, wherein: the automatic winding and unwinding device (13) is internally provided with a PLC, a relay, a bearing motor and a test line wire coil, wherein the relay is connected with the bearing motor, and the bearing motor is connected with the test line wire coil.
4. The electrical equipment detection device based on the automatic take-up and pay-off and switching wire as claimed in claim 3, wherein: the test wire coil comprises an A-phase test wire coil, a B-phase test wire coil and a C-phase test wire coil, and the test wire coil is connected with a test connecting wire (2).
5. The electrical equipment detection device based on the automatic take-up and pay-off and switching wire as claimed in claim 1, wherein: the automatic switching line device (12) comprises two cabinets, namely a high-voltage switching line device and a low-voltage switching line device.
6. The electrical equipment detection device based on the automatic take-up and pay-off and switching wire as claimed in claim 5, wherein: the high-voltage switching line device comprises: the high-voltage current switching and switching relay K1 and the high-voltage switching and switching relay K2 are respectively used for controlling the connection of the high-voltage side voltage or current of the instrument; the high-voltage testing device further comprises a direct-resistance high-voltage control relay K4, a transformation ratio high-voltage control relay K5, a parameter changer high-voltage control relay K6 and a load switch tester high-voltage side control relay K7, wherein the K4-K7 are respectively used for switching different testing items.
7. The electrical equipment detection device based on the automatic take-up and pay-off and switching wire as claimed in claim 5, wherein: the low-voltage switching line device includes: the sampling module control relay K3, the direct resistance low-voltage control relay K8, the transformation ratio low-voltage control relay K9 and the transformation parameter instrument low-voltage control relay K10; the low-voltage switching line device is used for a short-circuit low-voltage coil in a load loss test, when short circuit is needed, the sampling module controls the relay K3 to be closed, short circuit is achieved, and the current detection unit monitors short-circuit current.
8. The electrical equipment detection device based on the automatic take-up and pay-off and switching wire as claimed in claim 6, wherein: the high-voltage current switching-on and switching-off relay K1, the high-voltage switching-on and switching-off relay K2 and the test connecting wires led out from the sampling module control relay K3 are connected to the high-voltage side and the low-voltage side of the tested product at the same time; when a direct resistance test is carried out, a control signal sent by the flexible system is transmitted to the automatic switching device, the high-voltage current on-off relay K1, the high-voltage on-off relay K2 and the sampling module control relay K3 in the high-low voltage switching device are closed, and the direct resistance high-voltage control relay K4 and the direct resistance low-voltage control relay K8 are closed, so that the connection between a direct resistance instrument and a tested product is realized, the direct resistance test is carried out, and the disconnection of an electric appliance after the test is completed; and when different tests are carried out, the corresponding relays are closed, and the corresponding tests are completed.
9. The electrical equipment detection device based on the automatic take-up and pay-off and switching wire as claimed in claim 1, wherein: the flexible detection system is connected with a PLC in the automatic wire winding and unwinding device through a local area network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922250408.5U CN212321755U (en) | 2019-12-16 | 2019-12-16 | Power equipment detection device based on automatic take-up and pay-off and switching wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922250408.5U CN212321755U (en) | 2019-12-16 | 2019-12-16 | Power equipment detection device based on automatic take-up and pay-off and switching wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212321755U true CN212321755U (en) | 2021-01-08 |
Family
ID=74029596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922250408.5U Active CN212321755U (en) | 2019-12-16 | 2019-12-16 | Power equipment detection device based on automatic take-up and pay-off and switching wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212321755U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954776A (en) * | 2019-12-16 | 2020-04-03 | 国网辽宁省电力有限公司电力科学研究院 | Power equipment detection device and method based on automatic wire winding and unwinding and wire switching |
-
2019
- 2019-12-16 CN CN201922250408.5U patent/CN212321755U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954776A (en) * | 2019-12-16 | 2020-04-03 | 国网辽宁省电力有限公司电力科学研究院 | Power equipment detection device and method based on automatic wire winding and unwinding and wire switching |
| CN110954776B (en) * | 2019-12-16 | 2024-06-11 | 国网辽宁省电力有限公司电力科学研究院 | Power equipment detection device and method based on automatic wire winding and unwinding and wire switching |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108680772B (en) | Secondary test interface device of high-voltage circuit breaker and test method thereof | |
| CN109142881A (en) | Intelligent switching wire device for electrical test of power transformer | |
| CN110928196B (en) | Double-star combined test energy simulation and monitoring system | |
| CN111239652A (en) | Polarity testing device for current transformer | |
| CN212321755U (en) | Power equipment detection device based on automatic take-up and pay-off and switching wire | |
| CN106338669A (en) | Variable frequency speed governor electric energy quality characteristic test cabinet, test system and test method thereof | |
| CN220252067U (en) | Test system for low-voltage electric device | |
| CN110954776B (en) | Power equipment detection device and method based on automatic wire winding and unwinding and wire switching | |
| CN210051859U (en) | Test lead concentrator for electrical test of high-voltage circuit breaker | |
| CN208689112U (en) | Intelligent switching wire device for electrical test of power transformer | |
| CN208621711U (en) | A kind of ac voltage withstanding test device | |
| CN203927005U (en) | Electric valve control circuit and the electric operated valve instrument that comprises this circuit | |
| CN212622940U (en) | Complete set of switch equipment test device | |
| CN206147042U (en) | Emergency diesel electric gennerator set insulation monitoring and warning device | |
| CN110672940B (en) | Distribution automation integration testing arrangement | |
| CN113640734A (en) | Current automatic switching device and high-voltage electric energy metering equipment inspection device | |
| CN221039277U (en) | Auxiliary junction box for integrated transformer test | |
| CN205681318U (en) | A kind of many gears output Intelligent transformer device of controlled switching | |
| CN221351693U (en) | Intelligent monitoring device for service life of motor | |
| CN217427382U (en) | Low-voltage distribution cabinet with high-temperature protection | |
| CN219833970U (en) | Power supply system for high-low voltage switch cabinet secondary equipment test | |
| CN210693468U (en) | Test control system of reactive power compensation device | |
| CN215678585U (en) | Energy storage test and inversion power supply integrated system | |
| CN211829566U (en) | SPQ power distribution comprehensive measurement and control instrument | |
| CN215493825U (en) | Three-phase five-column large transformer flux-assisting method wiring automatic switching device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |