CN118091194B - Electric motor assisted mechanical megger - Google Patents
Electric motor assisted mechanical megger Download PDFInfo
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- CN118091194B CN118091194B CN202410503001.1A CN202410503001A CN118091194B CN 118091194 B CN118091194 B CN 118091194B CN 202410503001 A CN202410503001 A CN 202410503001A CN 118091194 B CN118091194 B CN 118091194B
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- 238000010248 power generation Methods 0.000 claims abstract description 56
- 230000006698 induction Effects 0.000 claims abstract description 19
- 238000004804 winding Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Abstract
The invention relates to the technical field of electric power measurement, in particular to an electric motor-assisted mechanical megger, which comprises a supporting base, a megger and a gyro component; the cradle comprises a shell, a power generation module and an induction module, wherein the upper side of the shell is in spherical hinge connection with the support base; the power generation module is fixed on the shell and is used for generating power for the induction module, so that the induction module can detect and display the resistance condition of the circuit to be detected. The gyro assembly comprises a rotating shaft, a rotating wheel and a driving motor, wherein the rotating shaft penetrates through the power generation module and serves as an input rotor of the power generation module. The driving motor is used for driving the rotation shaft to rotate, the rotation shaft rotates to enable the power generation module to generate power, a gyroscopic effect is formed when the rotating wheel rotates at a high speed along with the rotation shaft, the rotating shaft is kept horizontal by the angular momentum of the rotation wheel, the power generation module and the shell are kept horizontal, and when the supporting base moves along with an operator, the shell and the power generation module can be kept horizontal under the rotation of the rotating wheel, so that the stability of the power generation module in use is guaranteed.
Description
Technical Field
The invention relates to the technical field of electric power measurement, in particular to an electric motor-assisted mechanical megger.
Background
The insulating megger is a detection device for detecting the insulating resistor (insurance resistor) on an electrical appliance, and is generally divided into a mechanical insulating megger and an electronic insulating megger, wherein the mechanical insulating megger is composed of a hand motor, a dial plate and a connector, the mechanical insulating megger is usually generated by the hand motor, current passes through the connector, the connector is connected with the insulating resistor of the electrical appliance in series and then is connected with a megger pointer of the megger in series to form a loop, if the pointer does not swing at all, the insulating resistor is normal, if the pointer generates a certain swing amplitude, the insulating resistor is problematic, and the insulating protection function is not provided.
When using insulating megger, need place the insulating megger horizontality and just can ensure its precision, and need wear the megger and frequently remove the change operation object at operating personnel, or operating personnel when working under high altitude operational environment, the user hardly makes insulating megger place horizontality when using insulating megger, and hand power generation mode is unfavorable for the megger to stabilize in horizontality yet.
Disclosure of Invention
The present invention provides an electric motor assisted mechanical rocker to solve the above problems.
The invention relates to an electric motor auxiliary mechanical rocker meter, which adopts the following technical scheme:
An electric motor assisted mechanical megger comprising a support base, a megger and a gyroscopic assembly; the cradle comprises a shell, a power generation module and an induction module, wherein the upper side of the shell is in spherical hinge connection with the support base; the power generation module is fixed on the shell and is used for generating power for the induction module, so that the induction module can detect and display the resistance condition of the circuit to be detected; the gyro assembly comprises a rotating shaft, a rotating wheel and a driving motor, wherein the rotating shaft penetrates through the power generation module and serves as an input rotor of the power generation module, and the power generation module limits the rotating shaft to move along the axial direction of the rotating shaft; the rotating shaft is positioned right below the hinge joint position of the shell and the support base, and is in a horizontal state when the shell is placed in the support base in a static manner; the rotating wheel is arranged on the rotating shaft and rotates along with the rotating shaft; the driving motor is arranged on the shell and used for driving the rotating shaft to rotate.
Optionally, the two rotating shafts and the rotating wheel are coaxial and connected through a steering structure, the steering structure enables the two rotating shafts to synchronously rotate in opposite directions, one rotating shaft penetrates through the power generation module and serves as an input rotor of the power generation module, and the other rotating shaft is rotatably installed on the shell; one of the rotating shafts is connected with a driving motor for transmission; each rotating wheel is correspondingly arranged on one rotating shaft, and the two rotating wheels are respectively positioned at two sides of the power generation module along the axial direction of the rotating shaft.
Optionally, the rotating shaft is connected with the rotating wheel through an elastic piece, and the rotating shaft drives the rotating wheel to rotate through the elastic piece.
Alternatively, the steering structure includes three bevel gears, which are respectively mounted to the two rotating shafts and the housing, and the bevel gears mounted to the housing are perpendicular to the axes of the other two bevel gears and are engaged with both of the other two bevel gears.
Optionally, a level gauge is provided on the housing, through which it can be determined whether the housing is in a level state.
Optionally, a locking member is disposed on the support base, the locking member passes through the support base and can be abutted with the housing, and the locking member abuts with the housing to limit the relative rotation of the housing and the support base.
Optionally, a plurality of baffles are disposed within the housing to limit axial movement of the rotating shaft and the power generation module along the rotating shaft.
Optionally, the power generation module comprises a housing, a magnetic block arranged in the housing, a coil winding and a circuit board, wherein the rotating shaft penetrates through the magnetic block and drives the magnetic block to synchronously rotate, and the coil winding surrounds the outer side of the magnetic block and is electrically connected with the circuit board and is used for generating current and transmitting the current to the circuit board when the magnetic block rotates; the circuit board is used for converting and integrating the current and then transmitting the integrated current to the sensing module.
Optionally, the induction module comprises an instrument panel, two parallel circuits and two wiring terminals, the two wiring terminals are respectively arranged on the shell, and the two wiring terminals are connected with one of the parallel circuits in series; the circuit board conveys current to a common end of two parallel circuits, conductive coils are arranged in the two parallel circuits, the two conductive coils are wound outside the same magnet along opposite directions, and the magnet is rotatably arranged on the instrument panel and used for rotating under the induction of the conductive coils and driving a pointer of the instrument panel to deflect.
Optionally, a waistband which is convenient for an operator to wear is connected on the supporting base.
The beneficial effects of the invention are as follows: the electric motor assisted mechanical megger provided by the invention utilizes the driving motor to provide power for the power generation module, so that the power generation module is more labor-saving compared with a hand-operated power generation mode, and the power generation process is more stable and is convenient to use.
Further, when in use, the shell is manually adjusted to be in a horizontal state, the rotating shaft penetrating through the power generation module is also in the horizontal state, then the driving motor is started to drive the rotating shaft to rotate at a high speed, the rotating wheel forms a gyroscopic effect when rotating along with the rotating shaft, the rotating shaft is kept horizontal by the rotating angular momentum of the rotating wheel, and then the power generation module and the shell are kept horizontal.
Further, by arranging the two rotating shafts and the two rotating wheels, the two rotating wheels rotate along opposite directions along with the corresponding rotating shafts, torque generated during rotation of the rotating wheels is offset, stability of the rotating shafts is improved, and deflection of the cradle during starting is reduced.
Further, the rotating shaft enables the rotating wheel to rotate through stretching the elastic piece when the rotating shaft is started to rotate, so that the rotating wheel is slowly started to rotate along with the rotating shaft, impact on the whole device when the rotating wheel is started to rotate is reduced, shaking of the rotating wheel is further reduced, and the rotating wheel can be slowly started to rotate so as to reduce instant acting force received by the joint of the rotating wheel and the rotating shaft.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic overall construction of an embodiment of an electric motor assisted mechanical rocker meter of the present invention;
FIG. 2 is a top view of a support base and a mechanical megger of an electric motor assisted embodiment of the invention;
FIG. 3 is a schematic view in section in the direction A-A of FIG. 2;
FIG. 4 is a schematic view in section in the direction B-B in FIG. 2;
FIG. 5 is an exploded view of a mechanical timepiece of an embodiment of an electric motor assisted mechanical timepiece of the invention;
FIG. 6 is a top view of the housing of the cradle in an embodiment of an electric motor assisted mechanical cradle of the present invention;
FIG. 7 is a schematic view in section in the direction C-C of FIG. 6;
FIG. 8 is a schematic view of the internal portion of a mechanical timepiece of an embodiment of the invention, with assistance from an electric motor;
In the figure: 100. a support base; 110. a locking member; 120. a waistband; 130. a cross beam; 200. a rocking meter; 210. a power generation module; 211. a magnetic block; 212. a coil winding; 213. a circuit board; 220. an induction module; 221. a dashboard; 223. a connection terminal; 230. a level gauge; 240. a baffle; 250. a housing; 310. a rotating shaft; 320. a rotating wheel; 330. a drive motor; 340. an elastic member; 350. and a steering structure.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
An embodiment of an electric motor assisted mechanical megger of the present invention, as shown in fig. 1-8, includes a support base 100, a megger 200, and a gyroscopic assembly.
The upper side of the housing 250 is ball-hinged to the support base 100, specifically, the support base 100 is provided with a beam 130 above the housing 250, the lower side of the beam 130 is provided with a hinge seat, the upper side of the housing 250 is provided with a hinge head, and the hinge head ball is hinged to the hinge seat; in some other embodiments, the housing 250 may also be gimbaled to the cross beam 130 by a cross.
The cradle 200 includes a housing 250, a power generation module 210 and an induction module 220, wherein the power generation module 210 is fixed on the housing 250 and is used for generating power for the induction module 220, so that the induction module 220 can detect and display the resistance condition of the circuit to be tested.
The gyro assembly includes a rotation shaft 310, a rotation wheel 320, and a driving motor 330, the rotation shaft 310 passes through the power generation module 210 and serves as an input rotor of the power generation module 210, and the power generation module 210 restricts the rotation shaft 310 from moving in an axial direction thereof; the rotation shaft 310 is located right below the hinge position of the housing 250 and the support base 100, and the rotation shaft 310 is in a horizontal state when the housing 250 is rested in the support base 100; the rotating wheel 320 is mounted on the rotating shaft 310 and rotates along with the rotating shaft 310; the driving motor 330 is mounted to the housing 250 for driving the rotation shaft 310 to rotate.
The driving motor 330 is utilized to provide power for the power generation module 210, so that the power generation module is more labor-saving compared with a hand-operated power generation mode, and the power generation process is more stable and is convenient to use. When the power generation device is used, the shell 250 is manually adjusted to be in a horizontal state, the rotating shaft 310 passing through the power generation module 210 is also in a horizontal state, then the driving motor 330 is started to drive the rotating shaft 310 to rotate at a high speed, the rotating wheel 320 forms a gyroscopic effect when rotating along with the rotating shaft 310, the rotating shaft 310 is kept horizontal by the rotating angular momentum of the rotating wheel 320, so that the power generation module 210 and the shell 250 are kept horizontal, and when the support base 100 moves along with an operator, the shell 250 and the power generation module 210 can be kept horizontal under the rotation of the rotating wheel 320, and the stability of the power generation module in use is ensured.
In this embodiment, there are two rotating shafts 310 and rotating wheels 320, and the two rotating shafts 310 are coaxial and connected by a steering structure 350, and the steering structure 350 rotates the two rotating shafts 310 in synchronization and in opposite directions. One of the rotation shafts 310 passes through the power generation module 210 and serves as an input rotor of the power generation module 210, and the other rotation shaft 310 is rotatably mounted to the housing 250. One of the rotating shafts 310 is connected with a driving motor 330 for transmission; each of the rotating wheels 320 is correspondingly mounted to one of the rotating shafts 310, and the two rotating wheels 320 are respectively located at both sides of the power generation module 210 in the axial direction of the rotating shaft 310. By providing two rotating shafts 310 and two rotating wheels 320, and rotating the two rotating wheels 320 in opposite directions along with their corresponding rotating shafts 310, torque generated when they rotate is offset from each other, increasing the stability of the rotating shafts 310. Preferably, by arranging the weight in the housing 250, the center of gravity of the structure of the cradle 200 is located at the center of gravity between the two rotating wheels 320, and the center of gravity of the cradle 200 is located directly below the spherical hinge position of the housing 250 and the supporting base 100, so as to further improve the stability of the housing 250 and its internal structure when the rotating shaft 310 rotates, and reduce the deflection of the cradle 200 when the rotating shaft 310 starts rotating.
In this embodiment, the rotating shaft 310 is connected with the rotating wheel 320 through an elastic member 340, and the rotating shaft 310 drives the rotating wheel 320 to rotate through the elastic member 340; specifically, the elastic member 340 is a torsion spring or a coil spring formed by winding an elastic steel sheet, the rotating shaft 310 rotates the rotating wheel 320 by stretching the elastic member 340 when the rotating shaft 310 starts to rotate, so that the rotating wheel 320 is slowly started to rotate along with the rotating shaft 310, the impact on the whole device when the rotating wheel 320 starts to rotate is reduced, the shaking of the whole device is further reduced, and the instant acting force applied to the joint of the rotating wheel 320 and the rotating shaft 310 can be reduced when the rotating wheel 320 is slowly started to rotate.
In this embodiment, the steering structure 350 includes three bevel gears, which are respectively mounted to two rotating shafts 310 and the housing 250, the bevel gears mounted to the rotating shafts 310 are coaxial with and fixedly connected to the rotating shafts 310, the bevel gears mounted to the housing 250 are perpendicular to the axes of the other two bevel gears and are engaged with the other two bevel gears, and the bevel gears mounted to the housing 250 are driven by the bevel gears mounted to the housing 250 to rotate the bevel gears mounted to the two rotating shafts 310 in opposite directions.
In the present embodiment, the level 230 is provided on the housing 250, and whether the housing 250 is in a horizontal state can be determined by the level 230. The level 230 may be a universal level as in the prior art, and the level 230 is used to adjust the cradle 200 to an absolute level by observing the level, so as to enable the rotation shaft 310 to rotate when the housing 250 is in the level.
In the present embodiment, the lock member 110 is disposed on the support base 100, the lock member 110 passes through the support base 100 and can abut against the housing 250, and the lock member 110 abuts against the housing 250 to limit the relative rotation of the housing 250 and the support base 100. Specifically, the locking member 110 is a screw and is in threaded engagement with the support base 100, and the locking member 110 is rotated to be in or out of abutment with the housing 250. The locking member 110 is used to limit the free rotation of the cradle 200 in the support base 100 when the cradle 200 is not in use, thereby preventing the cradle 200 from being damaged by collision.
In the present embodiment, a plurality of shutters 240 that restrict the rotation shaft 310 and the power generation module 210 from moving axially along the rotation shaft 310 are provided in the housing 250.
In this embodiment, the power generation module 210 includes a housing, and a magnet 211, a coil winding 212 and a circuit board 213 disposed in the housing, wherein the housing is fixed in the housing 250, the magnet 211 is rotatably mounted in the housing, and the coil winding 212 and the circuit board 213 are both fixed with the housing. The rotating shaft 310 passes through the inside of the magnetic block 211 and drives the magnetic block 211 to synchronously rotate, and the coil winding 212 surrounds the outer side of the magnetic block 211 and is electrically connected with the circuit board 213, so that current is generated and transmitted to the circuit board 213 when the magnetic block 211 rotates; the circuit board 213 is used for integrating current conversion and then transmitting the integrated current to the sensing module 220. In some other embodiments, a reduction gear is further provided between the rotation shaft 310 and the magnetic block 211, so that the magnetic block 211 rotates at a lower rotation speed than the rotation shaft 310.
In the present embodiment, the sensing module 220 includes an instrument panel 221, two parallel circuits (not shown in the figure), and two connection terminals 223, the two connection terminals 223 are respectively disposed on the housing 250, and the two connection terminals 223 are connected in series with one of the parallel circuits; the circuit board 213 transmits current to a common end of two parallel circuits, conductive coils are arranged in the two parallel circuits, the two conductive coils are wound outside the same magnet along opposite directions, and the magnet is rotatably mounted on the instrument panel 221 and used for rotating under the induction of the conductive coils and driving a pointer of the instrument panel 221 to deflect. For operator's observation, an instrument panel 221 is located on the upper side of the housing 250. The power generation module 210 and the sensing module 220 are both structures of a mechanical megger in the prior art, and only the structures and principles thereof will be briefly described herein.
In this embodiment, the support base 100 is connected with a waistband 120 that is convenient for an operator to wear, and the length of the waistband 120 is adjustable.
When the electric motor assisted mechanical rocking meter is used, an operator carries the supporting base 100, the rocking meter 200 and the gyro assembly arranged in the shell 250 through the wearing waistband 120 to move, and when the operator reaches a position to be detected, the locking piece 110 is rotated to be separated from the shell 250, and as the shell 250 of the rocking meter 200 is in spherical hinge with the supporting base 100, the gravity center of the rocking meter 200 is positioned under the spherical hinge position of the shell 250 and the supporting base 100, and the rocking meter 200 is in an approximate horizontal state under the suspension effect. The state of the cradle 200 is confirmed by observing the level 230, and the cradle 200 is finely adjusted so that the cradle 200 is in an absolute horizontal state. And then, the driving motor 330 is started, the driving motor 330 drives one rotating shaft 310 to rotate, the rotating shaft 310 drives the other rotating shaft 310 to rotate in the opposite direction through the steering structure 350, the two rotating wheels 320 respectively rotate along with the two rotating shafts 310 in the opposite direction to form a gyroscopic effect, and when an operator shakes the supporting base 100 due to self action, the cradle 200 is caused to keep the current horizontal state, and the influence on the cradle 200 when the operator moves is reduced.
The rotation shaft 310 drives the magnetic block 211 to rotate when rotating, so that the coil winding 212 generates current and transmits the current to the circuit board 213, the circuit board 213 supplies power to two parallel circuits of the induction module 220, an operator only needs to connect two connecting terminals 223 with the power-on end and the grounding end of the device to be detected respectively, and the resistance between the power-on end and the grounding end can be known according to the deflection of the pointer on the instrument panel 221.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (9)
1. An electric motor assisted mechanical rocker meter, characterized by: comprises a supporting base, a cradle and a top assembly; the cradle comprises a shell, a power generation module and an induction module, wherein the upper side of the shell is in spherical hinge connection with the support base; the power generation module is fixed on the shell and is used for generating power for the induction module, so that the induction module can detect and display the resistance condition of the circuit to be detected; the gyro assembly comprises a rotating shaft, a rotating wheel and a driving motor, wherein the rotating shaft penetrates through the power generation module and serves as an input rotor of the power generation module, and the power generation module limits the rotating shaft to move along the axial direction of the rotating shaft; the rotating shaft is positioned right below the hinge joint position of the shell and the support base, and is in a horizontal state when the shell is placed in the support base in a static manner; the rotating wheel is arranged on the rotating shaft and rotates along with the rotating shaft; the driving motor is arranged on the shell and used for driving the rotating shaft to rotate;
The two rotating shafts and the rotating wheel are coaxial and are connected through a steering structure, the steering structure enables the two rotating shafts to synchronously rotate in opposite directions, one rotating shaft penetrates through the power generation module and serves as an input rotor of the power generation module, and the other rotating shaft is rotatably arranged on the shell; one of the rotating shafts is connected with a driving motor for transmission; each rotating wheel is correspondingly arranged on one rotating shaft, and the two rotating wheels are respectively positioned at two sides of the power generation module along the axial direction of the rotating shaft.
2. An electric motor assisted mechanical timepiece according to claim 1, wherein: the rotating shaft is connected with the rotating wheel through an elastic piece, and the rotating shaft drives the rotating wheel to rotate through the elastic piece.
3. An electric motor assisted mechanical timepiece according to claim 1, wherein: the steering structure comprises three bevel gears, wherein the three bevel gears are respectively arranged on the two rotating shafts and the shell, and the bevel gears arranged on the shell are perpendicular to the axes of the other two bevel gears and are meshed with the other two bevel gears.
4. An electric motor assisted mechanical timepiece according to claim 1, wherein: be provided with the spirit level on the shell, can confirm whether the shell is in the horizontality through the spirit level.
5. An electric motor assisted mechanical timepiece according to claim 1, wherein: the support base is provided with a locking piece, the locking piece penetrates through the support base and can be abutted with the shell, and the locking piece is abutted with the shell to limit the shell to rotate relative to the support base.
6. An electric motor assisted mechanical timepiece according to claim 1, wherein: a plurality of baffles are arranged in the shell for limiting the rotation shaft and the power generation module to axially move along the rotation shaft.
7. An electric motor assisted mechanical timepiece according to claim 1, wherein: the power generation module comprises a housing, a magnetic block, a coil winding and a circuit board, wherein the magnetic block, the coil winding and the circuit board are arranged in the housing, the rotating shaft penetrates through the magnetic block and drives the magnetic block to synchronously rotate, and the coil winding surrounds the outer side of the magnetic block and is electrically connected with the circuit board and is used for generating current and transmitting the current to the circuit board when the magnetic block rotates; the circuit board is used for converting and integrating the current and then transmitting the integrated current to the sensing module.
8. An electric motor assisted mechanical timepiece according to claim 7, wherein: the induction module comprises an instrument panel, two parallel circuits and two wiring terminals, wherein the two wiring terminals are respectively arranged on the shell, and the two wiring terminals are connected with one of the parallel circuits in series; the circuit board conveys current to a common end of two parallel circuits, conductive coils are arranged in the two parallel circuits, the two conductive coils are wound outside the same magnet along opposite directions, and the magnet is rotatably arranged on the instrument panel and used for rotating under the induction of the conductive coils and driving a pointer of the instrument panel to deflect.
9. An electric motor assisted mechanical timepiece according to claim 1, wherein: the supporting base is connected with a waistband which is convenient for operators to wear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410503001.1A CN118091194B (en) | 2024-04-25 | 2024-04-25 | Electric motor assisted mechanical megger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410503001.1A CN118091194B (en) | 2024-04-25 | 2024-04-25 | Electric motor assisted mechanical megger |
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| Publication Number | Publication Date |
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| CN118091194A CN118091194A (en) | 2024-05-28 |
| CN118091194B true CN118091194B (en) | 2024-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410503001.1A Active CN118091194B (en) | 2024-04-25 | 2024-04-25 | Electric motor assisted mechanical megger |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548960A (en) * | 2018-04-26 | 2018-09-18 | 山西长城电气股份有限公司 | A kind of highly practical instrument and meter and its detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9664716B1 (en) * | 2013-03-15 | 2017-05-30 | Meg-Alert, Inc. | Automatic insulation resistance testers |
| CN208459481U (en) * | 2018-05-17 | 2019-02-01 | 湖北博亿建设实业有限公司 | A kind of high-precision insulating megger |
| CN211478461U (en) * | 2019-12-14 | 2020-09-11 | 广西电网有限责任公司电力科学研究院 | Improved insulation resistance megger |
| CN115683076A (en) * | 2022-09-30 | 2023-02-03 | 西安航天精密机电研究所 | Dynamically tuned gyroscope and mounting method thereof |
| CN218917930U (en) * | 2022-10-22 | 2023-04-25 | 郭博洋 | Adjustable megger |
| KR20240019719A (en) * | 2023-06-30 | 2024-02-14 | 이영주 | Generator using the gyroscope |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108548960A (en) * | 2018-04-26 | 2018-09-18 | 山西长城电气股份有限公司 | A kind of highly practical instrument and meter and its detection method |
Non-Patent Citations (1)
| Title |
|---|
| 攻克 ZC25型兆欧表的平衡调整关;杨芳薇;铁道技术监督;20041231(第9期);31-32 * |
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