CN111505353B - Electrical detection instrument and method - Google Patents
Electrical detection instrument and method Download PDFInfo
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- CN111505353B CN111505353B CN202010559571.4A CN202010559571A CN111505353B CN 111505353 B CN111505353 B CN 111505353B CN 202010559571 A CN202010559571 A CN 202010559571A CN 111505353 B CN111505353 B CN 111505353B
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- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title abstract description 7
- 235000014676 Phragmites communis Nutrition 0.000 claims description 131
- 238000011065 in-situ storage Methods 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 11
- 238000012360 testing method Methods 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims 1
- 238000003780 insertion Methods 0.000 description 9
- 230000037431 insertion Effects 0.000 description 9
- 230000005611 electricity Effects 0.000 description 8
- 244000273256 Phragmites communis Species 0.000 description 6
- 238000013461 design Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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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
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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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
-
- 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
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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Abstract
The invention discloses an electrical detection instrument and a method, comprising an instrument panel, a positive instrument wiring terminal and a negative instrument wiring terminal, wherein one end of the instrument panel is connected with a first circuit, and the other end of the instrument panel is connected with a second circuit; a first on-off structure is arranged between the first circuit and the positive instrument wiring terminal so that the first circuit is switched in an on-off state, and a second on-off structure is arranged between the second circuit and the negative instrument wiring terminal so that the second circuit is switched in an on-off state.
Description
Technical Field
The invention belongs to the technical field of testing, and particularly relates to an electrical detection instrument and a method.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The electric instruments such as a voltmeter, an ammeter and a frequency meter are very widely applied, almost all the fields of industrial processes and scientific researches are covered, the electric instruments play an important monitoring role in the fields of ships, power transmission, special vehicles, monitoring of the running states of various devices and the like, and the states of the instruments are directly related to the normal running of the whole system, so that the regular metering of the instruments is particularly important.
The working mode of the electricity instrument is that the electricity instrument is connected to a monitored working circuit in series or in parallel, electrical parameters such as voltage, current and the like are read in real time, when the electricity instrument is measured, a standard electrical signal is provided through a multifunctional calibration source to detect whether the electricity instrument can accurately indicate a corresponding indicating value, and because the input and output impedance of the working circuit where the electricity instrument is located is influenced and the external input signal is prevented from damaging the working circuit, the electricity instrument needs to be disconnected from the working circuit and then connected to a measuring loop when the electricity instrument is measured. The inventor finds that the existing electrical instruments cannot realize in-situ metrological verification or test, exposed installation requires disconnection of a working circuit of a rear panel of the instrument, the exposed installation is connected to a metering loop for measurement, built-in installation also requires disconnection of associated equipment or parts, and then disconnection of the working circuit can carry out metering, so that the metering work is time-consuming and labor-consuming due to the disassembly and assembly of the instrument, the efficiency is low, and the risk of additional damage caused by the disassembly and assembly process is increased. What is worse, some special vehicles and ships or large-scale equipment are not allowed to be disassembled randomly, so that the meters are not measured for a long time, and whether the meters work normally or not is not judged at all, so that accidents are frequently caused.
In order to avoid the problem that the meter can be assembled and disassembled to realize metering, a flexible solution is adopted in some fields, an electric meter with a switch is adopted, namely, an input port of the electric meter is divided into two ends, one end of the electric meter is connected with a working circuit for inputting, the other end of the electric meter is connected with a metering circuit for inputting, and the two ports are switched by one switch, although the in-situ metering of the electric meter is effectively realized by the mode, the practical application shows that the mode of manually selecting the ports often generates unexpected errors, for example, some metering devices forget to switch the state of the switch to burn the working circuit; some instruments do not recover the switch state after metering, so that workers can mistakenly think that the instrument is damaged; sometimes, the instantaneous current damages the meter due to the fact that the worker switches the switch state for many times during work.
In summary, the inventors have found that such in situ metering by manual selection has the following disadvantages: the working channel needs to be manually selected through a key, so that human errors are easy to occur; the misuse of the keys in the work easily causes the accidental damage of the instrument.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an electrical detection instrument and a method, wherein the electrical detection instrument is provided with an on-off structure, the on-off structure can be directly inserted into a metering plug to carry out in-situ metering in a working state, and the normal state can be recovered by pulling out the metering plug, so that the technical problem of in-situ metering or testing of the electrical meter is solved.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, an embodiment of the present invention provides an electrical detection instrument, including an instrument panel, a positive instrument connection terminal, and a negative instrument connection terminal, where one end of the instrument panel is connected to a first circuit, and the other end of the instrument panel is connected to a second circuit; a first on-off structure is arranged between the first circuit and the positive instrument wiring terminal so that the first circuit is switched in an on-off state, and a second on-off structure is arranged between the second circuit and the negative instrument wiring terminal so that the second circuit is switched in an on-off state.
As a further technical scheme, the first on-off structure comprises a first reed and a second reed, the first reed is connected with the positive instrument wiring terminal, the second reed is connected with the first circuit, and the first reed and the second reed can be attached or separated to enable the first circuit to be changed in an on-off state.
According to a further technical scheme, the second on-off structure comprises a third reed and a fourth reed, the third reed is connected with the negative instrument wiring terminal, the fourth reed is connected with the second circuit, and the third reed and the fourth reed can be attached to or separated from each other so that the second circuit can be switched on and off.
As a further technical scheme, the first reed, the second reed, the third reed and the fourth reed are all elastic structures.
As a further technical scheme, the first reed, the second reed, the third reed and the fourth reed respectively comprise a first piece, a second piece and a third piece which are sequentially connected, the first piece and the third piece are symmetrically connected to two ends of the second piece, set included angles are formed between the first piece and the second piece, and each reed forms a C-shaped structure.
As a further technical scheme, the first sheet, the second sheet and the third sheet are of an integrated structure; the C-shaped structure openings of the first reed and the second reed are arranged back to back, and the C-shaped structure openings of the third reed and the fourth reed are arranged back to back.
As a further technical scheme, a pluggable single-side conductive metering plug is arranged between the first reed and the second reed, and a pluggable single-side conductive metering plug is arranged between the third reed and the fourth reed; the unilateral conductive metering plug comprises a plug body, wherein the plug body comprises a conductive sheet and an insulating sheet which are connected into a whole, the conductive sheet is made of a conductive material, and the insulating sheet is made of an insulating material.
As a further technical scheme, two jacks are arranged on the dial face of the instrument panel, one jack corresponds to the first on-off structure, and the other jack corresponds to the second on-off structure.
As a further technical scheme, the instrument panel is installed on the instrument body, the instrument body is provided with an internal cavity structure, and the first circuit, the first on-off structure, the positive instrument wiring terminal, the second circuit, the second on-off structure and the negative instrument wiring terminal are arranged in the internal cavity structure.
In a second aspect, an embodiment of the present invention further provides an operating method of the electrical detection instrument, which includes the following steps:
during metering, inserting a single-side conductive metering plug into the first on-off structure and/or the second on-off structure, communicating the conductive side of the single-side conductive metering plug with the first circuit and/or the second circuit, and carrying out in-situ metering;
when the circuit state is monitored, a single-side conductive monitoring plug is inserted into the first on-off structure and/or the second on-off structure, the conductive side of the single-side conductive monitoring plug, the positive instrument wiring terminal and/or the negative instrument wiring terminal are communicated to form an external interface, and the circuit state is monitored by adopting an external handheld instrument.
The beneficial effects of the above-mentioned embodiment of the present invention are as follows:
the on-off structure is arranged in the instrument, so that a circuit path can be ensured to normally work in a normal state, and when the metering is needed, the on-off structure is inserted into the metering connector to realize in-situ metering, thereby avoiding manual selection of a switch state and realizing mutual exclusion and error-free switching of a metering loop and a working loop.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are included to illustrate an exemplary embodiment of the invention and not to limit the invention.
FIG. 1 is a schematic view of an electrical test meter according to one or more embodiments of the present invention;
FIG. 2 is a schematic illustration of a reed according to one or more embodiments of the present invention;
FIG. 3 is a schematic illustration of a single-sided conductive metering plug insertion make-break configuration in accordance with one or more embodiments of the present invention;
FIG. 4 is a schematic illustration of a dashboard according to one or more embodiments of the present disclosure;
FIG. 5 is a schematic view of one arrangement of a single-sided conductive metering plug of the present invention;
FIG. 6 is a schematic view of another arrangement of a single-sided conductive metering plug of the present invention;
in the figure: the instrument comprises a first circuit 1, a positive instrument wiring terminal 2, a second circuit 3, a negative instrument wiring terminal 4, an instrument panel 5, a first reed 6, a second reed 7, a third reed 8, a fourth reed 9, a first reed 10, a second reed 11, a third reed 12, a socket 13, a single-side conductive metering plug 14, a conductive sheet 15, an insulating sheet 16 and a plug socket 17.
The spacing or dimensions between each other are exaggerated to show the location of the various parts, and the illustration is for illustrative purposes only.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
The terms "mounted", "connected", "fixed", and the like in the present invention should be understood broadly, and for example, the terms "mounted", "connected", "fixed", and the like may be fixedly connected, detachably connected, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.
As described in the background of the invention, the prior art is not sufficient, and the present invention provides an electrical test instrument and method for solving the above technical problems.
In an exemplary embodiment of the present invention, as shown in fig. 1, an electrical detection instrument is provided, which includes a first circuit 1, a first on-off structure, a positive instrument connection terminal 2, a second circuit 3, a second on-off structure, a negative instrument connection terminal 4, and an instrument panel 5;
One end of the instrument panel 5 is connected with the first circuit 1, and the other end of the instrument panel is connected with the second circuit 3. The first circuit and the second circuit are internal input circuits of the instrument.
A first on-off structure is arranged between the first circuit 1 and the positive instrument wiring terminal 2, and a second on-off structure is arranged between the second circuit 3 and the negative instrument wiring terminal 4.
The first on-off structure comprises a first reed 6 and a second reed 7, the first reed 6 is connected with the positive instrument wiring terminal 2, the second reed 7 is connected with the first circuit 1, the first reed and the second reed of the first on-off structure can be attached or detached to enable the on-off state of the first circuit to be changed, when the first reed and the second reed are attached, the first circuit is closed, and when the first reed and the second reed are separated, the first circuit is opened;
the second on-off structure comprises a third reed 8 and a fourth reed 9, the third reed 8 is connected with the negative instrument wiring terminal 4, the fourth reed 9 is connected with the second circuit 3, the third reed and the fourth reed of the second on-off structure can be attached or separated so that the on-off state of the second circuit can be changed, when the third reed and the fourth reed are attached, the second circuit is closed, and when the third reed and the fourth reed are separated, the second circuit is opened.
The first reed, the second reed, the third reed and the fourth reed are all elastic structures, the first reed and the second reed are extruded together by elasticity, and the third reed and the fourth reed are extruded together by elasticity, so that the conduction of external input and an internal circuit of the instrument is realized, and the normal working requirement is met, as shown in figure 1.
The first reed, the second reed, the third reed and the fourth reed comprise a first piece 10, a second piece 11 and a third piece 12 which are connected in sequence, the first piece, the second piece and the third piece are of an integrated structure, the first piece and the third piece are symmetrically connected to two ends of the second piece, a set included angle is formed between the first piece and the second piece, and each reed forms a C-shaped structure.
The two matched reeds of each on-off structure are arranged oppositely, namely the C-shaped structure openings of the first reed and the second reed are arranged oppositely, and the C-shaped structure openings of the third reed and the fourth reed are arranged oppositely; when the setting is concrete, the second piece of first reed, second reed pastes the setting mutually, and the first piece of first reed, second reed deviates from by the second piece and extends the setting, and the third piece of first reed, second reed deviates from by the second piece and extends the setting, and the second piece of third reed, fourth reed pastes the setting mutually, and the first piece of third reed, fourth reed deviates from by the second piece and extends the setting, and the third piece of third reed, fourth reed deviates from by the second piece and extends the setting.
As shown in figure 3, a pluggable single-side conductive metering plug 14 is arranged between two reeds matched with each on-off structure, the conductive side of the single-side conductive metering plug is attached to the second reed/the fourth reed, when the electrical detection instrument is normally used, the plug is not inserted, when in metering, the single-side conductive metering plug is inserted between the two reeds of the on-off structure, and then the two reeds are separated, so that a metering input signal is communicated with the inside of the instrument through the plug, and meanwhile, due to the single-side conductive characteristics of the reed separation and the plug, the physical partition of an original working circuit is ensured.
The single-side conductive metering plug 14 includes a plug body, as shown in fig. 5, the plug body includes a conductive sheet 15 and an insulating sheet 16 connected integrally, the conductive sheet is made of a conductive material, and the insulating sheet is made of an insulating material; in this embodiment, the conducting plate is made of a metal material, the insulating plate is made of a plastic material, and the conducting plate and the insulating plate can be connected together in a bonding manner. During metering, the single-side conductive metering plug is inserted into the on-off structure, the two reeds of the on-off structure are separated, and the conductive sheet of the single-side conductive metering plug is attached to the second reed/the fourth reed.
The unilateral conductive metering plug 14 can also adopt the form shown in fig. 6, the unilateral conductive metering plug 14 comprises a plug body, the plug body comprises a conductive sheet 15 and an insulating sheet 16 which are connected into a whole, the conductive sheet is made of conductive material, and the insulating sheet is made of insulating material; two plug bodies are arranged and fixed on the plug seat 17, a certain included angle is formed between the two plug bodies, and during metering, the conducting strip of one plug body is attached to the second reed, and the conducting strip of the other plug body is attached to the fourth reed; by adopting the form of the single-side conductive metering plug, the wrong use (namely, the reverse insertion of the direction during the use) can be avoided, and the function of preventing errors can be achieved.
As shown in fig. 4, two insertion ports 13 are arranged on the panel surface of the instrument panel 5, one insertion port corresponds to a first on-off structure, the other insertion port corresponds to a second on-off structure, the insertion ports only need to be 3mm in width, the two insertion ports can be obliquely arranged, an included angle between the two insertion ports is 60 degrees, and the two insertion ports are exposed on the front surface of the instrument panel by adopting an error-proof design with such an oblique angle; during metering, the single-side conductive metering plug is directly inserted into the socket, so that in-situ metering can be realized. The socket design requires less space, can be arranged on the front surface of the instrument panel relatively easily, and the instrument is easy to modify or redesign.
In addition, when a single-side conductive plug conducting electricity in the opposite direction is inserted into the instrument, the working circuit is provided with an external interface, and the purpose of monitoring the state of the working circuit by using an external handheld instrument can be realized;
in this case, the single-side conductive metering plug shown in fig. 5 can be directly adopted, and when in use, the conductive sheet is attached to the first reed/the third reed, so that the conductive sheet is provided with an external interface;
the single-side conductive metering plug shown in fig. 6 may also be used, so that the conductive sheet and the insulating sheet are arranged oppositely to those in fig. 6, and then the meter is inserted into the socket of the instrument panel, so that the instrument has an external interface.
When the single-side conducting plug is used, the conducting side of the single-side conducting plug is tightly attached to the reed connected with a circuit, so that metering can be performed; if the conductive side is tightly attached to the other reed, an external interface can be formed, and an external handheld instrument is used for monitoring.
According to the electrical detection instrument, the elastic reed is added in the instrument to replace the fixed connection of a circuit lead, and the contact and separation of the reed realize the switching action of the on-off of a circuit.
The electrical detection instrument can use the reed of the unilateral conductive metering plug separation on-off structure, thereby realizing the manual-free design of the selection of the metering loop and the working loop and simultaneously realizing the in-situ metering of the electrical instrument. The meter can be directly connected with the metering circuit through the metering plug to measure in the working state, and the normal working state can be recovered after the metering plug is pulled out.
The electrical detection instrument specifically works in the following steps:
during metering, inserting a single-side conductive metering plug into the first on-off structure and/or the second on-off structure, communicating the conductive side of the single-side conductive metering plug with the first circuit and/or the second circuit, and carrying out in-situ metering;
when the circuit state is monitored, a single-side conductive monitoring plug is inserted into the first on-off structure and/or the second on-off structure, the conductive side of the single-side conductive monitoring plug, the positive instrument wiring terminal and/or the negative instrument wiring terminal are communicated to form an external interface, and the circuit state is monitored by adopting an external handheld instrument.
In this embodiment, during metering, a single-side conductive plug is inserted between the two reeds of the two on-off structures, so as to ensure that the positive and negative poles of the gauge outfit are disconnected from the original circuit.
The invention can complete two tasks of in-situ metering and external monitoring of working state only by using the plugs conducting in different directions.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An electrical detection instrument is characterized by comprising an instrument panel, a positive instrument wiring terminal and a negative instrument wiring terminal, wherein one end of the instrument panel is connected with a first circuit, and the other end of the instrument panel is connected with a second circuit; a first on-off structure is arranged between the first circuit and the positive instrument connecting terminal so as to enable the first circuit to be switched in an on-off state, and a second on-off structure is arranged between the second circuit and the negative instrument connecting terminal so as to enable the second circuit to be switched in an on-off state;
the dial face of the instrument panel is provided with two jacks, one jack corresponds to the first on-off structure, and the other jack corresponds to the second on-off structure;
the first on-off structure comprises a first reed and a second reed, the first reed is connected with the positive instrument wiring terminal, the second reed is connected with the first circuit, and the first reed and the second reed can be attached or separated so that the on-off state of the first circuit can be changed;
the second on-off structure comprises a third reed and a fourth reed, the third reed is connected with the negative instrument wiring terminal, the fourth reed is connected with the second circuit, and the third reed and the fourth reed can be attached or separated to enable the second circuit to be changed in an on-off state;
a pluggable single-side conductive metering plug is arranged between the first reed and the second reed, and a pluggable single-side conductive metering plug is arranged between the third reed and the fourth reed;
during metering, inserting a single-side conductive metering plug into the first on-off structure and the second on-off structure, and communicating the conductive side of the single-side conductive metering plug, the first circuit and the second circuit to perform in-situ metering;
when the circuit state is monitored, a unilateral conductive monitoring plug is inserted into the first on-off structure and the second on-off structure, the conductive side of the unilateral conductive monitoring plug, the positive instrument wiring terminal and the negative instrument wiring terminal are communicated to form an external interface, and the circuit state is monitored by adopting an external handheld instrument.
2. The electrical test meter of claim 1, wherein said first, second, third, and fourth springs are all resilient structures.
3. The electrical detection instrument as claimed in claim 1, wherein the first reed, the second reed, the third reed and the fourth reed each comprise a first piece, a second piece and a third piece connected in sequence, the first piece and the third piece are symmetrically connected to two ends of the second piece, a set included angle is formed between the first piece and the second piece, and each reed forms a C-shaped structure.
4. The electrical test meter of claim 3, wherein said first, second and third sheets are of unitary construction; the C-shaped structure openings of the first reed and the second reed are arranged back to back, and the C-shaped structure openings of the third reed and the fourth reed are arranged back to back.
5. The electrical measuring instrument of claim 1, wherein the single-sided conductive metering plug includes a plug body, the plug body including a conductive sheet and an insulating sheet integrally connected, the conductive sheet being made of a conductive material and the insulating sheet being made of an insulating material.
6. The electrical measuring instrument as defined in claim 1, further comprising an instrument body, wherein the instrument panel is mounted to the instrument body, the instrument body has an internal cavity structure, and the first circuit, the first on/off structure, the positive instrument terminal, the second circuit, the second on/off structure, and the negative instrument terminal are disposed in the internal cavity structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010559571.4A CN111505353B (en) | 2020-06-18 | 2020-06-18 | Electrical detection instrument and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010559571.4A CN111505353B (en) | 2020-06-18 | 2020-06-18 | Electrical detection instrument and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111505353A CN111505353A (en) | 2020-08-07 |
| CN111505353B true CN111505353B (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010559571.4A Expired - Fee Related CN111505353B (en) | 2020-06-18 | 2020-06-18 | Electrical detection instrument and method |
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| CN (1) | CN111505353B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202231192U (en) * | 2011-09-23 | 2012-05-23 | 上海雷锐精密仪器有限公司 | Quick connector for measuring and checking current secondary loop |
| US9385445B2 (en) * | 2012-09-13 | 2016-07-05 | State Grid Corporation Of China (Sgcc) | Composite intelligent terminal wiring device and plug device |
| CN105699758B (en) * | 2016-03-02 | 2018-10-30 | 中国人民解放军91663部队 | Power-factor meter with metering interface and its method |
| CN205643683U (en) * | 2016-03-02 | 2016-10-12 | 中国人民解放军91663部队 | Ampere meter with measurement interface |
| CN107677915A (en) * | 2017-08-11 | 2018-02-09 | 国网山东省电力公司沂源县供电公司 | Use mutual inductor polarity measurement apparatus and its measuring method in Portable metering scene |
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2020
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| CN111505353A (en) | 2020-08-07 |
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