CN105845338A - Easy-to-install high-voltage zero-sequence current transformer - Google Patents
Easy-to-install high-voltage zero-sequence current transformer Download PDFInfo
- Publication number
- CN105845338A CN105845338A CN201610282137.XA CN201610282137A CN105845338A CN 105845338 A CN105845338 A CN 105845338A CN 201610282137 A CN201610282137 A CN 201610282137A CN 105845338 A CN105845338 A CN 105845338A
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- China
- Prior art keywords
- core
- tube
- heat
- hub axis
- paw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/10—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/04—Arrangements or devices for relieving mechanical tension
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Induction Heating (AREA)
Abstract
The invention discloses an easy-to-install high-voltage zero-sequence current transformer, which comprises a base tube, a core tube, one set of press claw component, a flat nut and a current transformer body, wherein the current transformer body sleeves the base tube; three crimping bosses are arranged on the inner circumference wall of the base tube; three radial limiting slide holes are formed in the core tube; the press claw component comprises three press claws; each press claw comprises a press plate part and a drive thread part; the press plate parts and corresponding one crimping boss are clamped to form a wire clamping hole; the press claw component and the three crimping bosses form three wire clamping holes in all; the flat nut is rotationally arranged in a tube cavity of the core tube and comprises a plane thread part which is meshed and matched with the drive thread part of each press claw; and a mounting screw hole of a built-in temperature sensing device is formed in the base tube. The easy-to-install high-voltage zero-sequence current transformer has an excellent anti-looseness effect.
Description
Technical field
The invention belongs to technical field of electric power, be specifically related to a kind of easy-to-install high pressure zero sequence current mutual inductor.
Background technology
The ultimate principle of zero-sequence current protection is based on Kirchhoff's current law (KCL): flow into the telegram in reply of any node in circuit
The algebraical sum of stream is equal to zero.In the case of circuit and electrical equipment are normal, the vector of each phase current is equal to zero, therefore, zero
The secondary side winding no signal output of sequence current transformer, executive component is failure to actuate.When occurring to get an electric shock or each during leak current fault
The vector of phase current is not zero, and fault current makes to produce in the iron core of zero sequence current mutual inductor magnetic flux, zero sequence current mutual inductor
Produced electric current is zero-sequence current.When protection mechanism receives this zero sequence current signal, can take accordingly according to electrical leakage quantity
Protection act.Mostly the mounting means of existing zero sequence current mutual inductor is to use flange install fixing or use bonding mode solid
Fixed, its installation site is it is generally required to reserve, therefore makes its application by more restriction.
Summary of the invention
It is an object of the invention to provide one to be easily installed location, there is preferable firmness, effectively prevent from loosening, having
The easy-to-install high pressure zero sequence current mutual inductor of real time temperature control function.
The technical scheme realizing the object of the invention is: a kind of easy-to-install high pressure zero sequence current mutual inductor, including one
Base tube, core pipe, a set of paw assembly, a plane nut and a current transformer；Current transformer is set in base tube
On；The internal perisporium of base tube is provided with three crimping boss, and the tube wall of core pipe is provided with three spacing slide openings of radial direction；Paw assembly includes
Three paws, each paw includes pressing plate portion, the guide runner portion of the inwardly projecting formation of inwall from pressing plate portion and is arranged on guiding
Driving threaded portion in slide section；On each guide runner portion insertion core pipe in a corresponding spacing slide opening of radial direction, respectively drive screw thread
Portion stretches in the tube chamber of core pipe, and each pressing plate portion is positioned between base tube inwall and core tube wall；Each pressing plate portion and a corresponding pressure
Connecing boss clamping and form a clamp hole, paw assembly and three crimping boss form three clamp holes altogether；Plane nut rotation
It is arranged in core pipe tube chamber；Plane nut includes driving threaded portion to engage the flat thread portion of adaptation with each paw；Each crimping is convex
The inwall of platform is provided with arcuate groove；The outer wall in each paw pressing plate portion is provided with arc clip slot；The arc clip slot of each paw is just to accordingly
The arcuate groove of one crimping boss is arranged；Plane nut rotation is arranged in core pipe tube chamber, and is positioned at the driving screw thread of each paw
Between portion and core pipe gear platform；
Base tube is provided with the installation screw of built-in temperature sensing device；Having that temperature sensing device includes that metal material makes is accommodating
The metal shell of groove, the temperature sensor being arranged in storage tank, for temperature sensor is crimped on storage tank diapire
Spring, screwed pipe plug for limit spring；
Metal shell is provided with heat conduction boss close to one end of core tube hub axis, and metal shell is away from one end of core tube hub axis
It is provided with interior hexagonal and twists groove；The periphery wall of metal shell is provided with the external screw thread adaptive with installation screw, the internal perisporium of storage tank
It is provided with internal threaded regions；Temperature sensor includes the heat-conducting block using heat conductive insulating elastomeric material to make, is arranged in heat-conducting block
U-shaped thermo-sensitive resistor, be arranged on heat-conducting block two connect electric mortiser post；Heat-conducting block back and forth can be slided in the storage tank of metal shell
Dynamic；Heat-conducting block is connected on the diapire of storage tank close to one end of core tube hub axis；Two connect electric mortiser post and protrude and be arranged on and lead
On the hot block other end away from core tube hub axis；Heat-conducting block is away from the external diameter of the other end of core tube hub axis and storage tank
Enclosing formation cannelure between internal perisporium, spring is positioned in this cannelure and is set in heat-conducting block away from the one of core tube hub axis
On end；Screwed pipe plug is provided with external screw thread district close to the periphery wall of one end of core tube hub axis, this external screw thread district and metal-back
The internal threaded regions of body is adaptive；Screwed pipe plug is provided with outer-hexagonal away from the periphery wall of one end of core tube hub axis and twists portion；Spiral shell
The center of pipe plug is provided with tube chamber；Screwed pipe plug is fixedly installed in cannelure by its external screw thread district；Spring is close to core pipe
One end of central axis is connected on heat-conducting block, and spring is connected on screwed pipe plug away from the other end of core tube hub axis；Lead
Two on hot block connect in the tube chamber that electric mortiser post is positioned at screwed pipe plug.
Heat conduction boss is to protrude the sharp tooth boss formed close to one end of core tube hub axis from metal shell.
The present invention has positive effect: (1) present invention compares with by traditional bolt assembly clamping electric power cable, can
To apply bigger pressure, and there is excellent anti-loosening effect, the reliability of long-term work is effectively ensured.(2) present invention
Zero sequence current mutual inductor owing to carrying press claw type retaining mechanism, can directly be fixedly installed on cable；Need not reserved peace
Dress position, it is easy to installing, and have preferable anti-loosening effect, firm intensity is relatively high and stable reliably.(3) it is provided with due to base tube
Extend radially through the installation screw of pressure pipe portion wall body along base tube, installation screw is fixed with temperature sensing device；So the present invention
Also there is real time temperature control function.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the first structure of the present invention；
Fig. 2 is a kind of perspective view when removing current transformer of the zero sequence current mutual inductor shown in Fig. 1；
Fig. 3 is a kind of perspective view when another angle is observed of the zero sequence current mutual inductor shown in Fig. 2；
Fig. 4 is a kind of front view of zero sequence current mutual inductor shown in Fig. 2；
Fig. 5 is that shown in Fig. 2, the one of zero sequence current mutual inductor partly cuts open structural representation；
Fig. 6 is a kind of explosive view of zero sequence current mutual inductor shown in Fig. 2；
Fig. 7 is a kind of explosive view during observation of another angle of zero sequence current mutual inductor shape shown in Fig. 2；
Fig. 8 is the explosive view that zero sequence current mutual inductor shown in Fig. 7 decomposes further；
Fig. 9 is a kind of perspective view of zero sequence current mutual inductor midplane nut shown in Fig. 2；
Figure 10 is a kind of structural representation of the second structure of the present invention；
Figure 11 is the close-up schematic view in Figure 10 at B；
Figure 12 is a kind of structural representation when removing current transformer of the zero sequence current mutual inductor shown in Figure 10.
Detailed description of the invention
(embodiment 1)
The present embodiment is a kind of easy-to-install high pressure zero sequence current mutual inductor, as shown in Fig. 1 to Fig. 9, including a base tube 1,
One core pipe 2,3, plane nut 4 of a set of paw assembly and a current transformer 9；
The internal perisporium of base tube is axially arranged with three crimping boss 11 along base tube, and the inwall of each crimping boss is provided with arcuate groove 111；Base
The internal perisporium of pipe is axially additionally provided with four positioning runners 12 along base tube；The periphery wall of core pipe is provided with four along base tube radially protruding
The support flange 21 extended, each outboard end supporting flange is positioned in a corresponding positioning runner, thus core pipe is supported location
In the tube chamber of base tube；Core pipe and base tube are arranged concentrically and are positioned at base tube tube chamber；The tube wall of core pipe is provided with three radially limits
Position slide opening 22, each radially spacing slide opening all extends radially through core tube wall along base tube；It is axial that each radially spacing slide opening is positioned at core pipe
On middle part, the radial cross-sectional shape of each radially spacing hole is I-shaped；The internal perisporium of core pipe is provided with inwardly projecting formation
Annular gear platform 23.
Paw assembly includes three paws 5, and each paw includes pressing plate portion 51, the inwardly projecting formation of inwall from pressing plate portion
Guide runner portion 52 and the driving threaded portion 53 being arranged in guide runner portion；Pressing plate portion is axially extending along base tube, guide runner
Portion radially extends along base tube；The outer wall in each paw pressing plate portion is provided with arc clip slot 511；Each guide runner portion inserts core Guan Shangxiang
Answering in a spacing slide opening of radial direction, in each tube chamber driving threaded portion to stretch to core pipe, each pressing plate portion is positioned at base tube inwall and core
Between pipe outer wall；Each paw radial direction along base tube under the guide and limit effect of radially spacing slide opening reciprocatingly slides；Respectively guide cunning
The radial cross-sectional shape in block portion is adaptive with radial direction spacing hole I-shaped.
In the present embodiment, the arcuate groove of a corresponding crimping boss is just arranged by the arc clip slot of each paw, and this paw
Arc clip slot and this crimping boss arcuate groove clamping formed a clamp hole 6, each clamp hole for clamping one electric lines of force
Cable；The present embodiment forms three clamp holes, altogether three electric power cables of clamping altogether.Owing to three electric power cables are from matrix slip pipe tube chamber
In pass, current transformer can carry out zero-sequence current detection by induction mode to three electric power cables, finds in time
Leakage current fault, and send real time information to distance host by wireless transmit/receive units, provide for power circuit intellectuality
Basic data.In the present embodiment, current transformer 9 is ring current transformer, and this ring current transformer is set in outside base tube
On wall.In concrete practice, also can arrange detent on the outer wall of base tube, current transformer is positioned in this detent,
So that current transformer is more firm.
In the present embodiment, the size in each clamp hole can be different, for clamping the electric power cable of different thicknesses.
Plane nut is arranged in core pipe tube chamber, and keeps off between platform in the driving threaded portion of each paw and core pipe；Plane
Nut includes driving threaded portion engage the flat thread portion 41 of adaptation and be positioned at the fastening of plane nut center with each paw
Portion 42, plane nut adjoins the flat thread portion that arranges on a side of paw assembly, another side of plane nut and core pipe gear
Platform slides adjacent；The periphery wall of plane nut and core inside pipe wall slide adjacent；Flat thread portion is annular, and flat thread sets in portion
There is archimedean spiral groove, the thread groove that driving threaded portion is provided with and this archimedean spiral groove is adaptive of each paw assembly,
Each side driving threaded portion to be arranged on guide runner portion, place adjacent flat nut.
The fastening part of the present embodiment midplane nut is interior hexagonal shape fastener hole or interior hexagonal shape binding groove, and it twists operation
Use inner hexagon spanner；In concrete practice, described fastening part just can use other shape, the most square or in-line or Flos Mume
Shape, all can select.
In concrete practice, crimping boss and the quantity of paw can select according to actual needs, such as two or three
Deng, it is all feasible.
Plane nut, in reciprocating rotation, drives its flat thread portion reciprocating rotation, and then by engaging adaptation
Threaded portion is driven to drive each paw, due to each paw footpath only along base tube under the guide and limit effect of radially spacing slide opening
To moving back and forth so that the move mode of each paw be close to each other towards base tube center or away from, thus unclamp or press from both sides
Tightly it is positioned at the electric power cable in clamp hole.
The present embodiment gravity centre distribution is relatively reasonable, when on the overhead power line of high-altitude, is conducive to alleviating vibration；Separately
Outward, the present embodiment drives paw clamping electric power cable by flat thread portion, and by traditional bolt assembly clamping electric lines of force
Cable is compared, particularly excellent in anti-loosening effect, and the reliability of long-term work is effectively ensured.
The present embodiment can use as high pressure zero sequence current mutual inductor, for detecting the existence of leakage current, with in time
Find leak current fault.
(embodiment 2)
The present embodiment and embodiment 1 are essentially identical, and difference is: as shown in Figure 10 to Figure 12, the electric current in the present embodiment
Transformer 9 includes toroidal inductive body 91 and intelligent control module 92；The monnolithic case of intelligent control module is also annular；Annular
Sensing body 91 and intelligent control module 92 are set on the periphery wall of base tube side by side.
Base tube 1 is provided with the installation screw 15 extending radially through base tube wall body；This installation screw is fixed with a temperature
Sensing device 8.
Temperature sensing device 8 includes the metal shell 81 with storage tank 811 that metal material makes, is arranged on storage tank
In temperature sensor 82, the spring 83 for temperature sensor is crimped on storage tank diapire, the spiral shell that is used for limit spring
Pipe plug 84.
Metal shell is provided with as puncturing the heat conduction boss 813 used, metal-back close to one end 812 of core tube hub axis
Body is provided with interior hexagonal away from one end 814 of core tube hub axis and twists groove 815；The periphery wall of metal shell is provided with and installs spiral shell
The external screw thread 816 that hole is adaptive, the internal perisporium of storage tank is provided with internal threaded regions 817；Heat conduction boss is close to core from metal shell
The sharp tooth boss formed is protruded in one end 812 of tube hub axis.
Temperature sensor includes using the heat-conducting block 821 that heat conductive insulating elastomeric material is made, the U-shaped being arranged in heat-conducting block
Thermo-sensitive resistor 822, two be arranged on heat-conducting block connect electric mortiser post 823；Heat-conducting block can be reciprocal in the storage tank of metal shell
Slide；Heat-conducting block is connected on the diapire of storage tank close to one end of core tube hub axis；Two connect electric mortiser post protrusion and are arranged on
On the heat-conducting block other end away from core tube hub axis；
Heat-conducting block encloses formation cannelure between external diameter and the internal perisporium of storage tank away from the other end of core tube hub axis
100, spring is positioned in this cannelure and is set on heat-conducting block one end away from core tube hub axis；
Screwed pipe plug is provided with external screw thread district 841 close to the periphery wall of one end of core tube hub axis, this external screw thread district and metal
The internal threaded regions 817 of housing is adaptive；Screwed pipe plug is provided with outer-hexagonal away from the periphery wall of one end of core tube hub axis and twists
Portion 842；The center of screwed pipe plug is provided with tube chamber 843；Screwed pipe plug is fixedly installed in cannelure by its external screw thread district；
Spring is connected on heat-conducting block close to one end of core tube hub axis, and spring abuts away from the other end of core tube hub axis
On screwed pipe plug；On heat-conducting block two connect electric mortiser post and are positioned in the tube chamber 843 of screwed pipe plug.
The internal perisporium of intelligent control module 92 is provided with inwardly projecting two and connects electric bushing (being not drawn on figure), respectively connects electricity
Socket inserts corresponding one and connects in electric bushing, so that temperature sensor is connected with the middle control circuit in intelligent control module.
This structure has the following advantages, owing to metal shell is easily deformed when extruding cable, and extrusion temperature sensor
Heat-conducting block, if heat-conducting block does not has mobile space, then easily pressurized deformation damages；The present embodiment, can by arranging spring
Heat-conducting block is crimped on the diapire of metal shell storage tank so that it is can correctly predict cable and junction, pressing plate pressing plate portion
Real time temperature；Can also be when, after metal shell compressive deformation, reserving mobile space to heat-conducting block, thus prevent heat-conducting block by pressurized
Damage；This structure has preferably Practical Performance.
In concrete practice, multiple installation screw and temperature sensing device can be set on base tube, for each
Cable and the temperature with base tube junction monitor in real time, thus realize the further intellectuality that power network monitoring runs.
Obviously, the above embodiment of the present invention is only for clearly demonstrating example of the present invention, and is not right
The restriction of embodiments of the present invention.For those of ordinary skill in the field, the most also may be used
To make other changes in different forms.Here without also cannot all of embodiment be given exhaustive.And these
Belong to obvious change that the connotation of the present invention extended out or variation still falls within protection scope of the present invention.
Claims (2)
1. an easy-to-install high pressure zero sequence current mutual inductor, it is characterised in that: include a base tube, core pipe, a set of
Paw assembly, a plane nut and a current transformer；Current transformer is set on base tube；The internal perisporium of base tube is provided with
Three crimping boss, the tube wall of core pipe is provided with three spacing slide openings of radial direction；Paw assembly includes three paws, and each paw includes
Pressing plate portion, the guide runner portion of the inwardly projecting formation of inwall from pressing plate portion and the driving screw thread being arranged on guide runner portion
Portion；Each guide runner portion inserts on core pipe in a corresponding spacing slide opening of radial direction, each tube chamber driving threaded portion to stretch to core pipe
In, each pressing plate portion is positioned between base tube inwall and core tube wall；Each pressing plate portion and a corresponding crimping boss clamping form one
Clamp hole, paw assembly and three crimping boss form three clamp holes altogether；Plane nut rotation is arranged in core pipe tube chamber；Flat
Face nut includes driving threaded portion to engage the flat thread portion of adaptation with each paw；The inwall of each crimping boss is provided with arcuate groove；
The outer wall in each paw pressing plate portion is provided with arc clip slot；The arc clip slot of each paw just arcuate groove to a corresponding crimping boss
Arrange；Plane nut rotation is arranged in core pipe tube chamber, and keeps off between platform in the driving threaded portion of each paw and core pipe；
Base tube is provided with the installation screw of built-in temperature sensing device；Having that temperature sensing device includes that metal material makes is accommodating
The metal shell of groove, the temperature sensor being arranged in storage tank, for temperature sensor is crimped on storage tank diapire
Spring, screwed pipe plug for limit spring；
Metal shell is provided with heat conduction boss close to one end of core tube hub axis, and metal shell is away from one end of core tube hub axis
It is provided with interior hexagonal and twists groove；The periphery wall of metal shell is provided with the external screw thread adaptive with installation screw, the internal perisporium of storage tank
It is provided with internal threaded regions；Temperature sensor includes the heat-conducting block using heat conductive insulating elastomeric material to make, is arranged in heat-conducting block
U-shaped thermo-sensitive resistor, be arranged on heat-conducting block two connect electric mortiser post；Heat-conducting block back and forth can be slided in the storage tank of metal shell
Dynamic；Heat-conducting block is connected on the diapire of storage tank close to one end of core tube hub axis；Two connect electric mortiser post and protrude and be arranged on and lead
On the hot block other end away from core tube hub axis；Heat-conducting block is away from the external diameter of the other end of core tube hub axis and storage tank
Enclosing formation cannelure between internal perisporium, spring is positioned in this cannelure and is set in heat-conducting block away from the one of core tube hub axis
On end；Screwed pipe plug is provided with external screw thread district close to the periphery wall of one end of core tube hub axis, this external screw thread district and metal-back
The internal threaded regions of body is adaptive；Screwed pipe plug is provided with outer-hexagonal away from the periphery wall of one end of core tube hub axis and twists portion；Spiral shell
The center of pipe plug is provided with tube chamber；Screwed pipe plug is fixedly installed in cannelure by its external screw thread district；Spring is close to core pipe
One end of central axis is connected on heat-conducting block, and spring is connected on screwed pipe plug away from the other end of core tube hub axis；Lead
Two on hot block connect in the tube chamber that electric mortiser post is positioned at screwed pipe plug.
Easy-to-install high pressure zero sequence current mutual inductor the most according to claim 1, it is characterised in that: heat conduction boss be from
Metal shell protrudes, close to one end of core tube hub axis, the sharp tooth boss formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610282137.XA CN105845338A (en) | 2016-05-02 | 2016-05-02 | Easy-to-install high-voltage zero-sequence current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610282137.XA CN105845338A (en) | 2016-05-02 | 2016-05-02 | Easy-to-install high-voltage zero-sequence current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105845338A true CN105845338A (en) | 2016-08-10 |
Family
ID=56590476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610282137.XA Withdrawn CN105845338A (en) | 2016-05-02 | 2016-05-02 | Easy-to-install high-voltage zero-sequence current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105845338A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201483250U (en) * | 2009-08-18 | 2010-05-26 | 深圳市翠绿首饰股份有限公司 | Fixture |
| CN203398703U (en) * | 2013-08-08 | 2014-01-15 | 马鞍山市华能电力线路器材有限责任公司 | Annular wire clamp fitting of cluster wire |
| CN203799847U (en) * | 2014-03-05 | 2014-08-27 | 江西森源电力股份有限公司 | High-precision outdoor pole-mounted switch zero-sequence current transformer |
| CN204464509U (en) * | 2015-01-22 | 2015-07-08 | 国家电网公司 | A kind of support type current transformer connecting clamp |
-
2016
- 2016-05-02 CN CN201610282137.XA patent/CN105845338A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201483250U (en) * | 2009-08-18 | 2010-05-26 | 深圳市翠绿首饰股份有限公司 | Fixture |
| CN203398703U (en) * | 2013-08-08 | 2014-01-15 | 马鞍山市华能电力线路器材有限责任公司 | Annular wire clamp fitting of cluster wire |
| CN203799847U (en) * | 2014-03-05 | 2014-08-27 | 江西森源电力股份有限公司 | High-precision outdoor pole-mounted switch zero-sequence current transformer |
| CN204464509U (en) * | 2015-01-22 | 2015-07-08 | 国家电网公司 | A kind of support type current transformer connecting clamp |
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Application publication date: 20160810 |