CN111668617B - Device for rapidly replacing electric meter - Google Patents
Device for rapidly replacing electric meter Download PDFInfo
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- CN111668617B CN111668617B CN202010437121.8A CN202010437121A CN111668617B CN 111668617 B CN111668617 B CN 111668617B CN 202010437121 A CN202010437121 A CN 202010437121A CN 111668617 B CN111668617 B CN 111668617B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/16—Fastening of connecting parts to base or case; Insulating connecting parts from base or case
- H01R9/18—Fastening by means of screw or nut
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
- H01R4/2475—Connections using contact members penetrating or cutting insulation or cable strands the contact members penetrating the insulation being actuated by screws, nuts or bolts
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Abstract
The invention discloses a device for quickly replacing an ammeter, which comprises an electric wire, a wire clamp body, a short-circuit device, a screw and a screw driver, wherein the wire clamp body is arranged on the electric wire, the wire clamp body is provided with a screw hole, the screw is arranged in the screw hole through the screw driver, the electric wire is broken by twisting the screw, the screw is contacted with an electrified copper wire of the electric wire, a user side electric wire loop interface is arranged on one side of the screw hole of the wire clamp body, the user side electric wire loop interface is electrically connected with the screw hole through an electrified contact piece, and the short-circuit device is installed in a matched mode with the user side electric wire loop interface. According to the invention, through the wire clamp body and the short-circuit device, the ammeter can be replaced without power failure, the convenience and the rapidness are realized, the ammeter replacement period is reduced, so that a power grid user can normally use electricity in the ammeter replacement process, and through the current detection device, when an operator twists a screw by using the screw, the connection condition of the screw and an electric wire is visually displayed by reflecting the magnitude of current, so that the power utilization requirement of the user is met by a short-circuit electrified loop.
Description
Technical Field
The invention relates to the field of electric meter jointing clamp equipment, in particular to a device for quickly replacing an electric meter.
Background
At present, the electric wire netting company all can set up an ammeter to each user of electric wire netting, be used for taking notes this user's power consumption condition, and the ammeter is under long-term solarization rain, easy damage, need once change every year, just can guarantee the good operation of equipment, when changing the ammeter, because the electric current backward flow that inserts the ammeter case can not open a way, consequently need the outage to carry out the operation, and at outage operation in-process, the user can't carry out normal power supply, very big puzzlement has been brought for the user, and simultaneously, because the volume of changing relates to thousands of platforms, large in quantity, the power failure scope that causes, time, the cycle is also very big, consequently, need research and development a device, make the ammeter change in-process can not carry out the operation of cutting off the power supply.
For example, a "three-phase electric energy meter uninterruptible replacing device" disclosed in chinese patent literature has a publication number: CN208432649U, filing date thereof: 18 th of 2018, 05 and 18 th of month, the three-phase electric energy meter switching device comprises a wiring port adapter, a multifunctional comprehensive wire connector and a short connector, wherein the short connector is inserted into the multifunctional comprehensive wire connector, one end of the wiring port adapter is inserted into the three-phase electric energy meter, the other end of the wiring port adapter is connected with the multifunctional comprehensive wire connector, and the three-phase electric energy meter can be replaced without power outage by pulling out the short connector; the fixed piece for the wiring port adapter forms an integrally installed interface transition adapter according to the specific hole site coordinates of the terminal button box of the three-phase electric energy meter, so that the terminal button box of the three-phase electric energy meter is converted from original concave wiring into convex wiring, and a power plug which is typically similar to a three-phase electric appliance is formed; the multifunctional comprehensive wire connector is a multifunctional comprehensive wiring terminal row which integrates a three-phase power supply inlet and outlet wire, a socket for connecting a wiring port adapter of a three-phase electric energy meter and a self-locking mechanism matched with a short connector; the lower side of the three-phase power supply is provided with a wiring hole for fixing a three-phase power supply in-out wire pressing frame structure, the upper side of the three-phase power supply is provided with a wiring hole for fixing a three-phase electric energy meter through a wiring port adapter, and a short-circuit hole between each phase of in-out wires; the upper half handle of the short connector is made of insulating materials, and the lower half handle of the short connector is composed of a short copper plate and a locking screw. The change device of this application need be connected with the ammeter when changing, has increased the ammeter and has changed the degree of difficulty, needs operate ammeter internal wiring, and the ammeter is changed the time spent longer.
Disclosure of Invention
The invention mainly solves the problems that the traditional medium electric meter is difficult to quickly replace and the power failure treatment is needed in the replacement process; the utility model provides a device for quick replacement ammeter, the ammeter is changed to the uninterrupted power supply, and the user can normally use electricity, and convenient and fast reduces the ammeter change cycle in the in-process of changing the ammeter.
The technical problem of the invention is mainly solved by the following technical scheme: the utility model provides a device for quick replacement ammeter, is including electric wire, fastener body, short circuit device, screw and the screwdriver that inserts the ammeter, the fastener body is installed on the electric wire, the fastener body is equipped with the screw, through the screwdriver is with the mounting screw in the screw, through wrench movement the screw is broken the skin with the electric wire, makes screw and electric wire circular telegram copper line contact, the fastener body is equipped with user side electric wire return circuit interface in one side of screw, user side electric wire return circuit interface is connected with the screw electricity through a circular telegram contact, the short circuit device matches the installation with user side electric wire return circuit interface. Utilize the screwdriver to turn round the screw from the screw, the screw rod front end position that utilizes the screw breaks the insulating skin of electric wire, make screw and the inside circular telegram copper line contact of electric wire, the short circuit device inserts user side electric wire return circuit interface, make the short circuit device be connected through screw and electric wire circular telegram copper line electricity, directly carry the user with the electric wire netting electric quantity, need not pass through the ammeter, realize the uninterrupted power change of ammeter, the in-process user of changing the ammeter can normally use electricity, accelerate the ammeter change speed, reduce the ammeter change cycle.
Preferably, the wire clamp body comprises an upper cover and a lower cover, the upper cover is connected with the lower cover through bolts, a plurality of semicircular through holes are formed in one side, corresponding to the lower cover, of the upper cover, the lower cover is provided with a plurality of semicircular wire holes matched with the semicircular through holes, and the semicircular through holes and the semicircular wire holes form clamping portions of wires. The electric wire that inserts the ammeter has the live wire and the zero line of electric wire netting and user side, and consequently, the semi-circular through-hole that the upper cover set up and the semi-circular line hole that the lower cover set up are four, aim at the semi-circular through-hole of upper cover and the semi-circular line hole of lower cover and the electric wire that inserts the ammeter respectively, with upper cover and lower cover laminating, twist tightly through the bolt, live the electric wire centre gripping, install convenient and fast on the electric wire with the fastener body.
Preferably, the screw driver further comprises a current detection device, the current detection device is mounted on the screwdriver and is used for detecting the contact current of the screw and the electric wire, the current detection device comprises a voltage division resistor R1, a voltage division resistor R2, a voltage division resistor R3, a pull-up resistor R4, a pull-up resistor R5, a pull-up resistor R6, a battery VCC, a transistor VT1, a transistor VT2, a transistor VT3, a light-emitting element LD1, a light-emitting element LD2 and a light-emitting element LD3, a first end of the voltage division resistor R1 is connected with a metal part of the screwdriver, a second end of the voltage division resistor R1 is respectively connected with a first end of the voltage division resistor R2 and a base of the transistor VT1, a second end of the voltage division resistor R2 is respectively connected with a first end of the voltage division resistor R3 and a base of the transistor VT2, a second end of the voltage division resistor R3 is connected with a base of the transistor 3, a collector of the transistor VT1 is connected with the battery VCC 4, the collector of the transistor VT2 is connected to the battery VCC through a pull-up resistor R5, the collector of the transistor VT3 is connected to the battery VCC through a pull-up resistor R6, the emitter of the transistor VT1 is grounded through the light emitting element LD1, the emitter of the transistor VT2 is grounded through the light emitting element LD2, and the emitter of the transistor VT3 is grounded through the light emitting element LD 3. When the screw is in contact with a copper wire of an electric wire, the screwdriver is in contact with the screw, the current is connected from the voltage dividing resistor R1, the transistor VT1, the transistor VT2 and the transistor VT3 are conducted at different times according to different sizes of the connected current, so that the light-emitting element LD1, the light-emitting element LD2 and the light-emitting element LD3 are not lighted at the same time, and the size of the current is judged by judging which light-emitting element is lighted.
Preferably, the light emitting elements LD1, LD2 and LD3 all emit light of different colors. The current magnitude is distinguished more obviously and visually by distinguishing colors.
Preferably, the resistance values of the voltage dividing resistor R1, the voltage dividing resistor R2 and the voltage dividing resistor R3 are all different. The resistance values of the divider resistors are different, and the difference of the current is amplified, so that the difference is more obvious.
Preferably, the screwdriver comprises a screwdriver handle and a screwdriver rod, the screwdriver handle is fixedly connected with the screwdriver rod, the screwdriver handle is a transparent plastic cylindrical shell, and the light-emitting element LD1, the light-emitting element LD2 and the light-emitting element LD3 are all installed in the screwdriver handle. Through the transparent handle of a knife, when the staff wrench movement screw, can be through the luminous condition audio-visual judgement screw of light-emitting component and the connected condition of electric wire.
Preferably, the inner wall of the screw hole is covered with an electrified metal. The power-on connection of the short-circuited equipment is more stable.
Preferably, the upper cover and the lower cover are made of insulating materials. The safety of the operation is ensured.
Preferably, the insulation cover is arranged on one side of the screw hole, the convex block is arranged on the other side of the screw hole, and the insulation cover is provided with a clamping groove matched with the convex block. After the ammeter is replaced, the insulating cover is clamped through the convex block and the clamping groove, the screw is covered, and safety is improved.
Preferably, the screw comprises a head and a screw rod, the head is fixedly connected with the screw rod, and a single notch is formed in the contact surface of the screw rod and the electric wire. The screw is twisted through the screwdriver, so that the screw rod of the screw rotates and enters the screw hole, the insulating skin of the electric wire is torn through the front end of the screw rod of the single notch, the screw rod is in contact with the electrified copper wire, and meanwhile, the single notch is easier to tear the insulating skin and is smaller in abrasion to the electrified copper wire.
The invention has the beneficial effects that: (1) the ammeter is replaced without power failure through the wire clamp body and the short-circuit device, so that convenience and rapidness are realized, the ammeter replacement period is shortened, and a power grid user can normally use electricity in the ammeter replacement process; (2) through the current detection device, when an operator twists a screw by using the screw, the connection condition of the screw and an electric wire is visually displayed by reflecting the magnitude of current, so that the short-circuited power-on loop meets the power utilization requirement of a user; (3) through the single notch setting of screw, better breaking wire insulation skin reduces the degree of wear of copper line.
Drawings
Fig. 1 is a structural side view of a wire clamp body of the first embodiment.
Fig. 2 is a structural plan view of a wire clamp body of the first embodiment.
Fig. 3 is a schematic structural diagram of the short-circuit device according to the first embodiment.
Fig. 4 is a schematic circuit diagram of a current detection device according to a first embodiment.
In the figure, 1, an upper cover, 2, a lower cover, 3, a bolt, 4, a semicircular through hole, 5, a semicircular line hole, 6, a screw hole, 7, a user side electric wire loop interface, 8, a short-circuit device, 9, a push button, 10, a limit button, 11, an insulating piece and 12, a short-connection rod are arranged.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
The first embodiment is as follows: a device for quickly replacing an ammeter comprises a clamp body, a short-circuit device 8, a screw, a screwdriver, a current detection device, an insulating cover and a convex block, wherein the clamp body comprises an upper cover 1 and a lower cover 2, the upper cover 1 is connected with the lower cover 2 through a bolt 3, one side of the upper cover 1 corresponding to the lower cover 2 is provided with a plurality of semicircular through holes 4, the lower cover 2 is provided with a plurality of semicircular wire holes 5 matched with the semicircular through holes 4, the semicircular through holes 4 and the semicircular wire holes 5 form a clamping part of the ammeter wire, the clamp body is arranged on the wire through the clamping part, as shown in figure 1, the upper end of the upper cover 1 is provided with a plurality of screw holes, the screw is matched with the screw holes, the current detection device is arranged on the screwdriver, the screw is twisted through the screwdriver, the screw is twisted into the screw hole, the ammeter wire clamped between the semicircular through hole 4 of the upper cover 1 and the semicircular wire hole 5 of the lower cover 2 is broken through the screw, the screw contacts with electric wire circular telegram copper line, current detection device passes through screwdriver and screw contact, detect the circular telegram electric current size of electric wire and screw, one side of screw is equipped with user side electric wire loop interface, user side electric wire loop interface is connected with the screw electricity through an circular telegram contact, short circuit device 8 matches the installation with user side electric wire loop interface, the screwdriver includes handle of a knife and cutter arbor, handle of a knife and cutter arbor fixed connection, the handle of a knife is the cylindric casing of a transparent plastics, light-emitting component LD1, light-emitting component LD2 and light-emitting component LD3 are all installed in the handle of a knife, the inner wall of screw covers there is circular telegram metal, the preparation material of upper cover 1 and lower cover 2 is insulating material, insulating cover installs the one side at the screw, the opposite side at the screw is installed to the lug, insulating cover is equipped with lug assorted draw-in groove.
As shown in fig. 4, the current detection apparatus includes a voltage dividing resistor R1, a voltage dividing resistor R2, a voltage dividing resistor R3, a pull-up resistor R4, a pull-up resistor R5, a pull-up resistor R6, a battery VCC, a transistor VT1, a transistor VT2, a transistor VT3, a light emitting element LD1, a light emitting element LD2, and a light emitting element LD3, wherein a first end of the voltage dividing resistor R1 is connected to a metal portion of the screwdriver, a second end of the voltage dividing resistor R1 is connected to a first end of the voltage dividing resistor R1 and a base of the transistor VT1, a second end of the voltage dividing resistor R1 is connected to the first end of the voltage dividing resistor R1 and the base of the transistor VT1, a collector of the transistor VT1 is connected to the battery VCC via the pull-up resistor R1, an emitter of the battery LD1 is connected to the battery VT1 via the pull-up resistor R1, the emitter of the transistor VT2 is grounded through the light emitting device LD2, the emitter of the transistor VT3 is grounded through the light emitting device LD3, the colors of light emitted by the light emitting device LD1, the light emitting device LD2, and the light emitting device LD3 are all different, and the resistance values of the voltage dividing resistor R1, the voltage dividing resistor R2, and the voltage dividing resistor R3 are all different.
The second embodiment is a device for rapidly replacing an electric meter, and compared with the first embodiment, the device is characterized in that a screw comprises a head and a screw rod, the head is fixedly connected with the screw rod, a single notch is formed in the contact surface of the screw rod and an electric wire, and the rest structures are the same as the first embodiment. The screw is twisted through the screwdriver, so that the screw rod of the screw rotates and enters the screw hole, the insulating skin of the electric wire is torn through the front end of the screw rod of the single notch, the screw rod is in contact with the electrified copper wire, and meanwhile, the single notch is easier to tear the insulating skin and is smaller in abrasion to the electrified copper wire.
In the specific application, when a power grid worker needs to replace an electric meter of a power grid user, the lower cover 2 of the electric meter replacing device is aligned with an electric wire connected into the electric meter, the electric grid live wire, the electric grid zero line, the user live wire and the user zero line connected into the electric meter are clamped and connected with the electric wire through four semicircular wire holes 5 arranged on the lower cover 2, the electric wire is clamped and clamped on the other side of the electric wire through the upper cover 1 and four semicircular through holes 4 arranged on the upper cover 1, the upper cover 1 and the lower cover 2 are screwed tightly through bolts 3, a wire clamp body is arranged on the electric wire connected into the electric meter, a screw knife is taken up, a screw is screwed in from a screw hole of the upper cover 1, the number of the twisted turns is counted, when the number of the twisted turns reaches five turns, the front end part of a screw rod of the screw rod is just contacted with the surface of an insulating skin of the electric wire, at the moment, in the turn, a single notch at the front end part of the screw rod is used for tearing the insulating skin, when the screwdriver contacts with the screw, current flows to the screwdriver through the screw, a current detection device arranged on the screwdriver works, the approximate range of the current is obtained by observing the light emitting elements with different colors, whether the contact condition of the screw and the copper wire is qualified is judged, the contact between the screw and the copper wire is good, the copper wire is prevented from being damaged by the screw, the occurrence of electric leakage accidents is reduced, as shown in figure 3, the limit buttons 10 on two sides of the short-circuit device 8 are pressed, the short-circuit rod 12 is not limited, the short-circuit rod 12 is pushed out from the insulating part 11 by pushing the push button 9, the short-circuit rod 12 of the short-circuit device 8 is inserted into a user side wire loop interface on the side of the screw hole, and an electrified contact piece connected to the screw hole is arranged inside the user side wire loop interface, pass through the screw with the electric current of electric wire netting, the electric wire of user side is transmitted to sheetmetal and shorting bar 12, the electric current need not pass through the ammeter again, the user can normal power consumption, the change of ammeter also can be carried out to the electric wire netting staff, the ammeter after the change is accomplished begins to work, can demolish the short circuit device, and the fastener body just can install on the electric wire always, use when conveniently changing the ammeter next time, reduce the cost, utilize insulating lid to cover the screw sealed, play insulating protection's effect.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (9)
1. A device for rapidly replacing an electric meter comprises an electric wire connected into the electric meter and is characterized by also comprising
The wire clamp comprises a wire clamp body, a short-circuit device, a screw and a screw blade, wherein the wire clamp body is arranged on a wire, the wire clamp body is provided with a screw hole, the screw is arranged in the screw hole through the screw blade, the wire is broken through twisting the screw, so that the screw is contacted with a power-on copper wire of the wire, one side of the screw hole of the wire clamp body is provided with a user side wire loop interface, the user side wire loop interface is electrically connected with the screw hole through a power-on contact piece, and the short-circuit device is installed in a matching manner with the user side wire loop interface;
the current detection device is arranged on the screwdriver and used for detecting the contact current of the screw and a wire through copper wire, the current detection device comprises a voltage division resistor R1, a voltage division resistor R2, a voltage division resistor R3, a pull-up resistor R4, a pull-up resistor R5, a pull-up resistor R6, a battery VCC, a transistor VT1, a transistor VT2, a transistor VT3, a light-emitting element LD1, a light-emitting element LD2 and a light-emitting element LD3, a first end of the voltage division resistor R1 is connected with a metal part of the screwdriver, a second end of the voltage division resistor R1 is respectively connected with a first end of the voltage division resistor R2 and a base of the transistor VT1, a second end of the voltage division resistor R2 is respectively connected with a first end of the voltage division resistor R3 and a base of the transistor VT2, a second end of the voltage division resistor R3 is connected with a base of the transistor 3, a collector of the transistor VT1 is connected with the battery VCC 4, the collector of the transistor VT2 is connected to the battery VCC through a pull-up resistor R5, the collector of the transistor VT3 is connected to the battery VCC through a pull-up resistor R6, the emitter of the transistor VT1 is grounded through the light emitting element LD1, the emitter of the transistor VT2 is grounded through the light emitting element LD2, and the emitter of the transistor VT3 is grounded through the light emitting element LD 3.
2. The device for rapidly replacing the ammeter as in claim 1, wherein the clamp body comprises an upper cover and a lower cover, the upper cover and the lower cover are connected through bolts, a plurality of semicircular through holes are formed in one side of the upper cover, which corresponds to the lower cover, the lower cover is provided with a plurality of semicircular wire holes matched with the semicircular through holes, and the semicircular through holes and the semicircular wire holes form a clamping part of the electric wire.
3. The device as claimed in claim 1, wherein the light emitting elements LD1, LD2 and LD3 emit light of different colors.
4. The device of claim 1, wherein the resistances of the voltage divider resistor R1, the voltage divider resistor R2, and the voltage divider resistor R3 are different.
5. The device for rapidly replacing an electricity meter according to claim 3, wherein the screwdriver comprises a handle and a cutter rod, the handle is fixedly connected with the cutter rod, the handle is a transparent plastic cylindrical shell, and the light emitting element LD1, the light emitting element LD2 and the light emitting element LD3 are all arranged in the handle.
6. A device for the rapid replacement of electricity meters as claimed in claim 1 or 2, characterized in that the inner wall of said screw hole is covered with an electrically conductive metal.
7. The device of claim 2, wherein the upper and lower covers are made of an insulating material.
8. The device of claim 1, further comprising an insulating cover and a protrusion, wherein the insulating cover is mounted on one side of the screw hole, the protrusion is mounted on the other side of the screw hole, and the insulating cover is provided with a slot matched with the protrusion.
9. A device for the rapid replacement of electricity meters as claimed in claim 1 or 2, wherein the screw comprises a head and a shank, the head is fixedly connected to the shank, and the contact surface of the shank with the electric wire is provided with a single notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010437121.8A CN111668617B (en) | 2020-05-21 | 2020-05-21 | Device for rapidly replacing electric meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010437121.8A CN111668617B (en) | 2020-05-21 | 2020-05-21 | Device for rapidly replacing electric meter |
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| Publication Number | Publication Date |
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| CN111668617A CN111668617A (en) | 2020-09-15 |
| CN111668617B true CN111668617B (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010437121.8A Active CN111668617B (en) | 2020-05-21 | 2020-05-21 | Device for rapidly replacing electric meter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114924104B (en) * | 2022-07-20 | 2022-09-23 | 国网辽宁省电力有限公司 | Non-sensing, non-destructive replacement device for watt-hour meter |
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| CN204517067U (en) * | 2015-01-18 | 2015-07-29 | 嘉兴市永信电子有限公司 | Do not have a power failure and change table plug seat |
| CN104991093A (en) * | 2015-06-24 | 2015-10-21 | 国网天津市电力公司 | Cable test splicing fitting |
| CN106093502A (en) * | 2016-07-19 | 2016-11-09 | 国网上海市电力公司 | A kind of power failure changes the device of single-phase intelligent electric energy meter |
| CN209233061U (en) * | 2019-01-16 | 2019-08-09 | 朱佳申 | A kind of electric energy meter termination |
-
2020
- 2020-05-21 CN CN202010437121.8A patent/CN111668617B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204517067U (en) * | 2015-01-18 | 2015-07-29 | 嘉兴市永信电子有限公司 | Do not have a power failure and change table plug seat |
| CN104991093A (en) * | 2015-06-24 | 2015-10-21 | 国网天津市电力公司 | Cable test splicing fitting |
| CN106093502A (en) * | 2016-07-19 | 2016-11-09 | 国网上海市电力公司 | A kind of power failure changes the device of single-phase intelligent electric energy meter |
| CN209233061U (en) * | 2019-01-16 | 2019-08-09 | 朱佳申 | A kind of electric energy meter termination |
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