CN112485476B - Multifunctional clamp meter device and system - Google Patents
Multifunctional clamp meter device and system Download PDFInfo
- Publication number
- CN112485476B CN112485476B CN202011305430.6A CN202011305430A CN112485476B CN 112485476 B CN112485476 B CN 112485476B CN 202011305430 A CN202011305430 A CN 202011305430A CN 112485476 B CN112485476 B CN 112485476B
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- clamp
- clamp meter
- meter device
- clamp arm
- multifunctional
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
- G01R1/22—Tong testers acting as secondary windings of current transformers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
Abstract
The application discloses a multifunctional clamp meter device and a system, wherein the clamp meter device comprises a clamp meter body, a first clamp arm and a second clamp arm are arranged at the upper part of the clamp meter body, and the first clamp arm is arranged along the vertical direction of the clamp meter body; the second clamp arm is arc-shaped, and the arc center is arranged towards the first clamp arm; the upper ends of the first clamp arm and the second clamp arm form openings and serve as jaws; a measuring circuit is arranged in the clamp meter body; an insulating operating rod is connected with the lower part of the clamp meter body; the first clamp arm is hinged with a locking clamping piece; when the clamp meter device is used, the clamp meter device is moved upwards, a wire enters through the jaw, and the jaw is closed by utilizing the locking clamping piece to be matched with the wire so as to automatically measure the wire parameters; after the measurement is finished, the clamp meter device is moved downwards to enable the lead to exit the jaw. The application is not limited by factors such as geographic position, height and the like, and can be measured at any time and any place; the risk that the human body directly contacts with live wire equipment and falls at a high place caused by climbing operation is avoided.
Description
Technical Field
The application relates to the technical field of clamp-on meter devices, in particular to a multifunctional clamp-on meter device and a system.
Background
The conventional clamp meter (sometimes called clamp meter or clamp meter) is also used as one of necessary test tools in daily maintenance work, and is mainly used for testing related parameters such as voltage, current, frequency and the like, and is required to have higher test resolution, test precision and more test functions.
However, the conventional clamp meter has the following drawbacks in measuring voltage and current: the marketing general investigation and anti-electricity-stealing work are inconvenient or low in efficiency due to the factors of strong concealment, complex geographical environment, high line and the like, the safety is poor, and safety risk factors exist in the climbing process. Especially in some remote mountainous areas, the electric power staff can unilaterally carry out work on users who are not at home and intentionally obstruct marketing inspection and refusal to match, the electric power staff is required to measure the voltage and current data of each user by holding the existing clamp type meter by means of a climbing ladder at the position of the wire for entering the user, the census and anti-electricity-stealing work is inconvenient or low in efficiency, and safety risk factors exist in the climbing process.
Disclosure of Invention
The application aims to solve the technical problems that electric power staff is required to measure voltage and current data of households or factories and the like by means of climbing a ladder to hold an existing clamp meter at a household wire, the general investigation and anti-electricity-stealing work is inconvenient or low in efficiency, the safety is poor, and the defects of safety risk factors and the like exist in the climbing process. The application aims to provide a multifunctional clamp meter device and a system, which can be used for rapidly and accurately measuring the shunt condition of a power supply line, and can be used for efficiently, safely and accurately carrying out marketing general investigation and anti-electricity-stealing work; the application particularly solves the defects of inconvenient marketing and general investigation and anti-electricity-stealing work or low efficiency, safety risk factors in the climbing process and the like caused by the factors of strong concealment, complex geographical environment, high line and the like.
The application is realized by the following technical scheme:
the multifunctional clamp meter device comprises a clamp meter body, wherein a first clamp arm and a second clamp arm are arranged at the upper part of the clamp meter body, and the first clamp arm is arranged along the vertical direction of the clamp meter body; the second clamp arm is arc-shaped, and an arc center is arranged towards the first clamp arm; the upper ends of the first clamp arm and the second clamp arm form openings and serve as jaws; a measuring circuit is arranged in the clamp meter body; an insulating operating rod is connected to the lower part of the clamp meter body; a locking clamping piece is hinged on the first clamp arm;
when the clamp meter device is used, the clamp meter device is moved upwards, a wire enters through the jaw, and the jaw is closed by utilizing the locking clamping piece to be matched with the wire so as to automatically measure the wire parameters; after the measurement is finished, the clamp meter device is moved downwards to enable the lead to exit the jaw.
The working principle is as follows: the existing clamp meter is a current measuring device with closed clamp heads, and when the clamp meter is used, the opening and closing of the clamp heads are controlled through clamp head opening keys on the side edges of a clamp meter body; then, when the current at the high-position wire is required to be measured, the prior clamp-on meter is usually required to be used together with a climbing ladder, otherwise, the current at the high-position wire is difficult to measure. Therefore, the prior clamp type meter has the following defects in voltage and current measurement: the marketing general investigation and anti-electricity-stealing work are inconvenient or low in efficiency due to the factors of strong concealment, complex geographical environment, high line and the like, the safety is poor, and safety risk factors exist in the climbing process. Especially in some remote mountainous areas, the electric power staff can unilaterally carry out work on users who are not at home and intentionally obstruct marketing inspection and refusal to match, the electric power staff is required to measure the voltage and current data of each user by holding the existing clamp type meter by means of a climbing ladder at the position of the wire for entering the user, the census and anti-electricity-stealing work is inconvenient or low in efficiency, and safety risk factors exist in the climbing process.
The application designs a multifunctional clamp meter device, which is characterized in that a spring in a clamp head opening key is removed, a first clamp arm is not controlled by the clamp head opening key and automatically falls down under the gravity factor, and openings are formed at the upper ends of the first clamp arm and a second clamp arm and serve as jaws. Secondly, a locking clamping piece is additionally arranged on the first clamp arm, so that the operation is flexible, and the circuit is conveniently hung and locked during high-altitude measurement; after the application is refitted, the first clamp arm is not controlled by the clamp head opening key, the first clamp arm automatically falls down due to gravity, the jaw is opened to facilitate the wire hanging, and when the wire enters the jaw, the jaw is closed for measurement by utilizing the cooperation of the locking clamping piece and the wire, and the process is opposite to the process. Then, the telescopic insulating operation rod is additionally arranged at the lower part of the clamp-on meter body, so that the insulating operation rod can be additionally arranged according to the actual height of the site position to measure parameters such as site current, voltage, temperature and the like.
When in use, the utility model is characterized in that: moving the clamp meter device upwards, leading wires to enter through the jaws, closing the jaws by utilizing the locking clamping piece to be matched with the wires, and automatically measuring the parameters of the wires; after the measurement is finished, the clamp meter device is moved downwards to enable the lead to exit the jaw. Thereby realizing automatic measurement and suspension and withdrawal of the high-altitude wire to be measured and the measuring device.
The application has simple and reasonable structure and obvious advantages: (1) portability: the device has the main body length of only 25CM and the main body width of 15CM, has the weight of about 1.20 kg, small volume, light weight, convenient assembly and carrying, is not limited by factors such as geographic position, height and the like, and can be measured at any time and any place. (2) security: the device of the application avoids the risk of falling at high places caused by direct contact of a human body with live wire equipment and climbing operation, ensures personal safety and reduces safety risk. (3) practicality: the device does not need to prepare related auxiliary tools or ascend, the measurement parameters are efficient and quick, and the working efficiency of personnel is improved. (4) economy: the material cost and the labor hour cost for refitting the prior equipment are about 0.05 ten thousand yuan, and the cost is low. And (5) strong generalization performance: the device is not only applied to the work of line loss correction and anti-electricity-stealing of the power supply station district, and is approved by managers of each district in unison with marketing management staff, but also can be widely applied to the work of line loss correction, anti-electricity-stealing, three-phase load unbalance treatment and the like of the district; in addition, in the power grid planning, when planning and measuring relevant parameters of the transformer area, the parameters such as the transformer area outlet, the middle section, the user terminal voltage, the current and the temperature can be measured by means of the equipment without ascending.
As a further preferable scheme, the locking clamping piece comprises two U-shaped hoops and a locking tongue piece, wherein the two U-shaped hoops are oppositely clamped on the first clamp arm, and the connecting holes on two sides are connected through corresponding screw rods; the two screws together act as locking tongues and face the arcuate inner side of the second jawarm.
As a further preferable scheme, the insulating operation rod is an insulating operation rod with telescopic length, and the insulating operation rod can be additionally arranged according to the actual height of the site position to measure parameters such as site current, voltage, temperature and the like.
As a further preferable mode, the insulating operation rod is an operation rod with telescopic length, wherein the insulating operation rod is sleeved with an insulating binding belt or an insulating clamping sleeve.
As a further preferable scheme, the second clamp arm is provided with an LED illuminating lamp, and the LED illuminating lamp adopts an LED illuminating semi-ring; the measuring operation at night and in places with poor illumination conditions is convenient.
As a further preferred solution, a measuring circuit is arranged inside the clamp meter body, which is integrated on one circuit board, and comprises a current measurement, a voltage measurement, an inductance measurement and a temperature measurement.
As a further preferable scheme, the clamp meter further comprises a liquid crystal display screen, wherein the liquid crystal display screen is arranged on the clamp meter body.
As a further preferable scheme, the locking clamping piece is made of an insulating material, so that the safety is high.
On the other hand, the application also provides a multifunctional clamp meter analysis system, which comprises an equipment terminal and the multifunctional clamp meter device, wherein APP software corresponding to the multifunctional clamp meter device is installed in the equipment terminal; the measurement data of the multifunctional clamp meter device can be transmitted to the equipment terminal through a wireless technology; the equipment terminal comprises a mobile phone and a notebook computer.
As a further preferable scheme, the multifunctional clamp meter device further comprises a Lora node module, and the measurement data of the multifunctional clamp meter device can be transmitted to the equipment terminal through the Lora node module.
Compared with the prior art, the application has the following advantages and beneficial effects:
1. the device has the main body length of only 25CM and the main body width of 15CM, has the weight of about 1.20 kg, small volume, light weight, convenient assembly and carrying, is not limited by factors such as geographic position, height and the like, and can be measured at any time and any place.
2. The device provided by the application can be used for avoiding the risk of falling at a high place caused by direct contact of a human body with live wire equipment and climbing operation, ensuring personal safety and reducing safety risk.
3. The device does not need to prepare related auxiliary tools or ascend, has high efficiency and rapidness in measuring parameters, and improves the working efficiency of personnel.
4. The material cost and the labor hour cost for refitting the prior equipment are about 0.05 ten thousand yuan, and the cost is low.
5. The device disclosed by the application is not only applied to the work of line loss correction and anti-electricity-stealing of the power supply station district, but also can be widely applied to the work of line loss correction, anti-electricity-stealing, three-phase load unbalance treatment and the like of the district, and is approved by managers and marketing management staff of each district. In power grid planning, when planning and measuring relevant parameters of a platform area, the parameters such as platform area outlet, middle section, user terminal voltage, current, temperature and the like can be measured by means of the equipment without ascending.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:
fig. 1 is a schematic diagram of a prior art clamp meter device.
Fig. 2 is a schematic structural view of a multifunctional clamp meter device according to the present application.
FIG. 3 is a schematic view of a locking clip according to the present application.
Reference numerals and corresponding part names:
the clamp comprises a 1-clamp meter body, a 2-first clamp arm, a 3-second clamp arm, a 4-insulating operation rod, a 5-locking clamping piece, a 50-U-shaped anchor ear, a 51-locking tongue piece, a 6-liquid crystal display screen and a 7-clamp opening key.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present application, the present application will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present application and the descriptions thereof are for illustrating the present application only and are not to be construed as limiting the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that: no such specific details are necessary to practice the application. In other instances, well-known structures, circuits, materials, or methods have not been described in detail in order not to obscure the application.
Throughout the specification, references to "one embodiment," "an embodiment," "one example," or "an example" mean: a particular feature, structure, or characteristic described in connection with the embodiment or example is included within at least one embodiment of the application. Thus, the appearances of the phrases "in one embodiment," "in an example," or "in an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Moreover, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and that the illustrations are not necessarily drawn to scale. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In the description of the present application, it should be understood that the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present application.
Example 1
As shown in fig. 1 to 3, the multifunctional clamp meter device of the application comprises a clamp meter body 1, wherein a first clamp arm 2 and a second clamp arm 3 are arranged at the upper part of the clamp meter body 1, and the first clamp arm 2 is arranged along the vertical direction of the clamp meter body 1; the second clamp arm 3 is arc-shaped, and an arc center is arranged towards the first clamp arm 2; the upper ends of the first clamp arm 2 and the second clamp arm 3 form openings and serve as jaws; a measuring circuit is arranged in the clamp meter body 1; an insulating operating rod 4 is connected with the lower part of the clamp meter body 1; the first clamp arm 2 is hinged with a locking clamping piece 5;
when the clamp meter device is used, the clamp meter device is moved upwards, a wire enters through the jaw, and the jaw is closed by utilizing the locking clamping piece 5 to be matched with the wire so as to automatically measure the wire parameters; after the measurement is finished, the clamp meter device is moved downwards to enable the lead to exit the jaw.
In this embodiment, the locking clip 5 includes two U-shaped hoops 50 and a locking tongue piece 51, where the two U-shaped hoops 50 are oppositely clamped on the first clamp arm 2, and the connection holes on two sides are all connected by corresponding screws; the two screws together act as locking tongues 51 and face the arcuate inner side of the second jawarm 3.
In this embodiment, the insulating operation rod 4 is an insulating operation rod with a telescopic length, and the insulating operation rod 4 can be additionally installed according to the actual height of the site position to measure parameters such as site current, voltage, temperature and the like.
In this embodiment, the insulating operation rod 4 is an operation rod with a telescopic length, in which an insulating cable tie or an insulating sleeve is sleeved on the insulating operation rod 4.
In this embodiment, the second clamp arm 3 is provided with an LED lighting lamp, and the LED lighting lamp adopts an LED lighting semi-ring; the measuring operation at night and in places with poor illumination conditions is convenient.
In this embodiment, a measurement circuit is disposed in the clamp meter body 1, and the measurement circuit is integrated on a circuit board, and the measurement circuit includes current measurement, voltage measurement, inductance measurement and temperature measurement.
In this embodiment, the liquid crystal display 6 is further included, and the liquid crystal display 6 is disposed on the clamp meter body 1.
In this embodiment, the locking clip 5 is made of an insulating material, so that the safety is high.
The working principle is as follows: as shown in fig. 1, the conventional clamp meter is a current measuring device with closed clamp heads, and when in use, the clamp heads are controlled to be opened and closed by a clamp head opening key 7 at the side edge of the clamp meter body; then, when the current at the high-position wire is required to be measured, the prior clamp-on meter is usually required to be used together with a climbing ladder, otherwise, the current at the high-position wire is difficult to measure. Therefore, the prior clamp type meter has the following defects in voltage and current measurement: the marketing general investigation and anti-electricity-stealing work are inconvenient or low in efficiency due to the factors of strong concealment, complex geographical environment, high line and the like, the safety is poor, and safety risk factors exist in the climbing process. Especially in some remote mountainous areas, the electric power staff can unilaterally carry out work on users who are not at home and intentionally obstruct marketing inspection and refusal to match, the electric power staff is required to measure the voltage and current data of each user by holding the existing clamp type meter by means of a climbing ladder at the position of the wire for entering the user, the census and anti-electricity-stealing work is inconvenient or low in efficiency, and safety risk factors exist in the climbing process.
The application designs a multifunctional clamp meter device, as shown in figure 2, firstly, a spring in a clamp head opening key is removed, a first clamp arm is not controlled by the clamp head opening key, and is automatically dropped under the gravity factor, and openings are formed at the upper ends of the first clamp arm and the second clamp arm and used as jaws. Secondly, a locking clamping piece is additionally arranged on the first clamp arm, so that the operation is flexible, and the circuit is conveniently hung and locked during high-altitude measurement; after the application is refitted, the first clamp arm is not controlled by the clamp head opening key, the first clamp arm automatically falls down due to gravity, the jaw is opened to facilitate the wire hanging, and when the wire enters the jaw, the jaw is closed for measurement by utilizing the cooperation of the locking clamping piece and the wire, and the process is opposite to the process. Then, the telescopic insulating operation rod is additionally arranged at the lower part of the clamp-on meter body, so that the insulating operation rod can be additionally arranged according to the actual height of the site position to measure parameters such as site current, voltage, temperature and the like.
The implementation process comprises the following steps: an electric power worker holds an insulating operating rod 4 of the device to a high position, a wire to be tested enters through a jaw, and the jaw is closed by utilizing the cooperation of a locking clamping piece and the wire to automatically measure the wire parameters; after the measurement is finished, the clamp meter device is moved downwards to enable the lead to exit the jaw. Thereby realizing automatic measurement and suspension and withdrawal of the high-altitude wire to be measured and the measuring device.
The application has the advantages that: (1) portability: the device has the main body length of only 25CM and the main body width of 15CM, has the weight of about 1.20 kg, small volume, light weight, convenient assembly and carrying, is not limited by factors such as geographic position, height and the like, and can be measured at any time and any place. (2) security: the device of the application avoids the risk of falling at high places caused by direct contact of a human body with live wire equipment and climbing operation, ensures personal safety and reduces safety risk. (3) practicality: the device does not need to prepare related auxiliary tools or ascend, the measurement parameters are efficient and quick, and the working efficiency of personnel is improved. (4) economy: the material cost and the labor hour cost for refitting the prior equipment are about 0.05 ten thousand yuan, and the cost is low. And (5) strong generalization performance: the device is not only applied to the work of line loss correction and anti-electricity-stealing of the power supply station district, and is approved by managers of each district in unison with marketing management staff, but also can be widely applied to the work of line loss correction, anti-electricity-stealing, three-phase load unbalance treatment and the like of the district; in addition, in the power grid planning, when planning and measuring relevant parameters of the transformer area, the parameters such as the transformer area outlet, the middle section, the user terminal voltage, the current and the temperature can be measured by means of the equipment without ascending.
Example 2
As shown in fig. 1 to 3, the difference between the present embodiment and embodiment 1 is that the present embodiment provides a multifunctional clamp meter analysis system, which includes an equipment terminal and a multifunctional clamp meter device described in embodiment 1, where APP software corresponding to the multifunctional clamp meter device described in embodiment 1 is installed in the equipment terminal; the measurement data of the multifunctional clamp meter device can be transmitted to the equipment terminal through a wireless technology; the equipment terminal comprises a mobile phone and a notebook computer.
In this embodiment, the multifunctional clamp meter device further includes a Lora node module, and measurement data of the multifunctional clamp meter device may be transmitted to the equipment terminal through the Lora node module.
The application transmits the measured data to the equipment in real time through the Lora node model by means of the multifunctional clamp meter device disclosed by the embodiment 1, so that the data can be conveniently read by staff for monitoring.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the application, and is not meant to limit the scope of the application, but to limit the application to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (9)
1. The multifunctional clamp meter device comprises a clamp meter body (1), and is characterized in that a first clamp arm (2) and a second clamp arm (3) are arranged on the upper portion of the clamp meter body (1), and the first clamp arm (2) is arranged along the vertical direction of the clamp meter body (1); the second clamp arm (3) is arc-shaped, and an arc center is arranged towards the first clamp arm (2); the upper ends of the first clamp arm (2) and the second clamp arm (3) form openings and are used as jaws; a measuring circuit is arranged in the clamp meter body (1); an insulating operating rod (4) is connected with the lower part of the clamp-on meter body (1); a locking clamping piece (5) is hinged on the first clamp arm (2);
the locking clamping piece (5) comprises two U-shaped hoops (50) and a locking tongue piece (51), the two U-shaped hoops (50) are oppositely clamped on the first clamp arm (2), and the connecting holes on the two sides are connected through corresponding screws; the two screws together act as locking tongues (51) and face the arc-shaped inner side of the second gripper arm (3);
when the clamp-on meter device is used, the clamp-on meter device is moved upwards, a wire enters through the jaw, and the jaw is closed by utilizing the locking clamping piece (5) to be matched with the wire so as to automatically measure the wire parameters; after the measurement is finished, the clamp meter device is moved downwards to enable the lead to exit the jaw.
2. A multifunctional clamp meter device according to claim 1, characterized in that the insulating operating rod (4) is an insulating operating rod with a telescopic length.
3. A multifunctional clamp meter device according to claim 2, characterized in that the insulating operating rod (4) is an operating rod with telescopic length sleeved with an insulating binding band or an insulating clamping sleeve.
4. The multifunctional clamp meter device according to claim 1, wherein the second clamp arm (3) is provided with an LED illuminating lamp, and the LED illuminating lamp adopts an LED illuminating semi-ring.
5. The multifunctional clamp meter device according to claim 1, characterized in that the clamp meter body (1) is internally provided with a measuring circuit, which is integrated on one circuit board, the measuring circuit comprising a current measurement, a voltage measurement, an inductance measurement and a temperature measurement.
6. The multifunctional clamp meter device according to claim 1, further comprising a liquid crystal display (6), wherein the liquid crystal display (6) is arranged on the clamp meter body (1).
7. A multifunctional clamp meter device according to claim 1, characterized in that the material of the locking clamp (5) is an insulating material.
8. A multifunctional clamp meter analysis system, which is characterized by comprising a device terminal and a multifunctional clamp meter device according to any one of claims 1 to 7, wherein APP software corresponding to the multifunctional clamp meter device according to any one of claims 1 to 7 is installed in the device terminal; the measurement data of the multifunctional clamp meter device is transmitted to the equipment terminal through a wireless technology; the equipment terminal comprises a mobile phone and a notebook computer.
9. The system of claim 8, further comprising a Lora node module, wherein the measurement data of the multi-purpose clamp meter device is transmitted to the equipment terminal via the Lora node module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011305430.6A CN112485476B (en) | 2020-11-19 | 2020-11-19 | Multifunctional clamp meter device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011305430.6A CN112485476B (en) | 2020-11-19 | 2020-11-19 | Multifunctional clamp meter device and system |
Publications (2)
| Publication Number | Publication Date |
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| CN112485476A CN112485476A (en) | 2021-03-12 |
| CN112485476B true CN112485476B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011305430.6A Active CN112485476B (en) | 2020-11-19 | 2020-11-19 | Multifunctional clamp meter device and system |
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| CN (1) | CN112485476B (en) |
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| CN210604846U (en) * | 2019-07-19 | 2020-05-22 | 南京宁电电力工程有限公司 | Clamp-on ammeter convenient to use |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8882095B2 (en) * | 2011-08-05 | 2014-11-11 | Chung Instrument Electronics Industrial Co., Ltd. | Hook portion of clamp meter |
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|---|---|---|---|---|
| CN2122163U (en) * | 1992-03-05 | 1992-11-18 | 詹励宾 | Anti-slip clothes hook |
| JP2009092539A (en) * | 2007-10-10 | 2009-04-30 | Chugoku Electric Power Co Inc:The | Clamp meter |
| CN103575329A (en) * | 2012-08-03 | 2014-02-12 | 弗卢克公司 | Handheld devices, systems, and methods for measuring parameters |
| CN105353177A (en) * | 2015-12-01 | 2016-02-24 | 广西大学 | High-altitude wiring clamp |
| CN105842489A (en) * | 2016-04-19 | 2016-08-10 | 广西大学 | Novel high-altitude wire connecting clamp |
| CN107677852A (en) * | 2017-06-23 | 2018-02-09 | 国家电网公司 | A kind of Telescopic clip-on ammeter |
| CN208013343U (en) * | 2018-03-30 | 2018-10-26 | 广东电网有限责任公司 | A kind of high-altitude fast fixture |
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| CN112485476A (en) | 2021-03-12 |
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