CN107271944A - A kind of full-automatic termination of program control type current transformer - Google Patents
A kind of full-automatic termination of program control type current transformer Download PDFInfo
- Publication number
- CN107271944A CN107271944A CN201710432187.6A CN201710432187A CN107271944A CN 107271944 A CN107271944 A CN 107271944A CN 201710432187 A CN201710432187 A CN 201710432187A CN 107271944 A CN107271944 A CN 107271944A
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- current transformer
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- automatic
- tested
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
-
- 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
Abstract
The invention discloses a kind of full-automatic termination of program control type current transformer, described device includes：Auxiliary connection platform, twin-stage standard current transformer, current lifting device, full-automatic wiring unit, control unit, tested current transformer, control unit is all connected with auxiliary connection platform, twin-stage standard current transformer, current lifting device, full-automatic wiring unit, tested current transformer, and twin-stage standard current transformer, current lifting device, full-automatic wiring unit, tested current transformer, control unit and auxiliary connection platform are all connected with；Full-automatic wiring unit carries out automatic connection to tested current transformer, standard two-stage current transformer and current lifting device；Operating efficiency can be improved by realizing, and reduce the technique effect of the uncertainty of measurement process.
Description
Technical field
The present invention relates to field of power transmission, in particular it relates to a kind of full-automatic termination of program control type current transformer.
Background technology
According to JJG313-2010《Verification of Measuring Current Transformer》The regulation of vertification regulation：As standard 0.05 to
0.01 grade of current transformer must 2 years be to be examined and determine in a cycle, and each change must be examined and determine during calibrating.As standard
Current transformer, its no-load voltage ratio scope is generally 5 to 2000/5,1A, and 0.05 to 0.01 grade of accuracy rating, no-load voltage ratio scope is wide, etc.
Level requires different, and the situation of wrong line, inefficiency occur in actually calibrating；Furthermore different to same standard device
Because each patching operations personnel are not necessarily identical in no-load voltage ratio verification process, different no-load voltage ratio wire contacts are not necessarily good, can cause
The uncertainty increase that same tested transformer is deteriorated, may cause qualified transformer to be considered as unqualified.
The content of the invention
The invention provides a kind of full-automatic termination of program control type current transformer, solve existing wiring efficiency compared with
Technical problem that is low, easily malfunctioning, realizes and realizes automatic connection using the device in the application, and efficiency and accuracy rate are higher
Technique effect.
In order to solve scene because standard no-load voltage ratio scope is wide, class requirement is different, and wrong occurs in actually calibrating
The situation of line, inefficiency；And in the different no-load voltage ratio verification process of same standard device because of each patching operations personnel not
Certain identical, different no-load voltage ratio wire contacts are not necessarily good, the uncertainty increase that same tested transformer can be caused to be deteriorated,
The problems such as qualified transformer is considered as unqualified may be caused, this application provides a kind of program control type current transformer is full-automatic
Termination, it is possible to increase operating efficiency, reduces the uncertainty of measurement process.
The purpose of the present invention is implemented by the following technical programs：
A kind of full-automatic termination of program control type current transformer, including the auxiliary connection being connected with tested current transformer
Platform, twin-stage standard current transformer, current lifting device and control unit, auxiliary connection platform is to tested current transformer, standard twin-stage electricity
Current transformer and current lifting device carry out full-automatic wiring；The primary side string of the two-stage current transformer and tested current transformer
Connection, the secondary side signal of the two is compared；The current lifting device provides 0 to 6000A high currents；Described control unit is used to control
Relay on-off.
Further, auxiliary connection platform includes, primary connection part, secondary connection part, and the primary connection part will
Conducting heavy current copper bar La, Lb, Lb1, Lb2, Lb4 and L1, L2, L3 ... the L10 of full-automatic wiring unit are led by high current
Line is connected to binding post La, Lb, Lb1, Lb2, Lb4 and L1 of auxiliary connection platform primary connection panel, L2, L3 ... L10 conveniently
The external tested current transformer primary side binding post of connection.The secondary connection part by relay control panel it is multiple after
Normally opened contact K1, K2, K3 ... K16 of electrical equipment are connected to auxiliary connection platform secondary connection panel binding post K1, K2, K3 ...
K16, external tested Current Transformer Secondary side terminal of convenient connection.
Further, two-stage current transformer electric current ratio is 5~5000A/5A and 5A/1A, and accuracy rating is 0.002 grade.
Two-stage current transformer be used as standard, for same electric current than tested current transformer be compared, its ratio of precision be detected
High 2 accuracy grades of current transformer.
Further, current lifting device output 0~6000A high currents, supply two-stage current transformer and tested current transformer
Primary side, formed detecting current transformer when primary circuit；
Further, control unit is used for the folding for controlling all relays and contactor.
Further, device also includes temperature polling instrument, and temperature polling instrument enters to the temperature of high-current conductor and contact point
Row in real time monitoring, by thermal resistance sensor gather 16 temperature control points temperature, through temperature polling instrument by 16 channel temperature values by
RS232 communication transfers implement temperature monitoring and control to host computer.
Further, relay status monitoring system is tracked prison to the folding condition for performing the relay of no-load voltage ratio switching
Survey, the relay switching variable of corresponding actions is acquired in time, show corresponding states, alarm prompt is carried out to malfunction.
Further, humiture environmental monitoring system is monitored to the humiture of device local environment, passes through humiture
The ambient temperature and humidity of sensor real-time acquisition device there and then and by RS232 communication transfers to host computer.
Full-automatic wiring unit carries out automatic connection, tool to tested current transformer, two-stage current transformer and current lifting device
Body is：
Full-automatic wiring unit includes two-stage current transformer, and once secondary automatic connection and tested current transformer be once
Secondary automatic connection.Two-stage current transformer primary side binding post Lb, L2, L3 ... L8 connects different by high current wire
Conducting copper Lb, L2, L3 ... L8, conducting copper Lb, L2, L3 ... L8 connections relay normally open contact 1, relay normally open
The public conducting copper COM ends of connection two-stage current transformer of contact 2, are similarly detected the same twin-stage of current transformer primary side wiring
Current transformer primary side mode of connection, its primary side Lb, Lb1, Lb2, Lb4 and L2, L3 ... L10 connections relay normally open are touched
Point 1, the public conducting copper COM1 of the tested current transformer of the connection of normally opened contact 2.The primary side polar end of two-stage current transformer
La, L1 are connected with tested current transformer primary side polar end La, L1 by high current wire, common port COM and COM1 difference
Current lifting device output end is connect, primary circuit is formed, the break-make of control relay realizes two-stage current transformer and tested Current Mutual Inductance
Device primary side automatic connection.The secondary side automatic connection of two-stage current transformer and tested current transformer is with a side joint line side
Method.Two-stage current transformer secondary side common port com leads to mutual-inductor tester T0 terminals, is detected Current Transformer Secondary side
Common port com1 leads to current capacity case Z ends, and is connected to mutual-inductor tester Tx ends through the current capacity case other end, real
Existing two-stage current transformer and the automatic connection of tested Current Transformer Secondary side.
Further, device workflow is as follows：
1) auxiliary connection platform primary side patch panel binding post La, Lb, L1, L2, L3 ... L10 is passed through into high current wire
Tested current transformer primary side binding post La, Lb, L1, L2, L3 ... the L10 of connection, such as tested current transformer primary side does not have
Some binding posts, auxiliary connection platform can be not brought up.By auxiliary connection platform secondary side patch panel binding post K1, K2, K3 ... K16
By tested Current Transformer Secondary side joint terminal K1, K2, K3 ... the K16 of second test line connection, current transformer two is detected
Secondary side without binding post, auxiliary connection platform can be not brought up；
2) the tested current transformer relevant parameter of device input；
3) device is according to all relay foldings of no-load voltage ratio automatic decision；
Specifications parameter and wiring of the present invention by the way of nameplate copy and bar code management to tested current transformer
Information is acquired and asset management, supports unified assets to file, error information inquiry, storage, historical data compare and by
Current transformer running status is examined to assess.Device is 5~5000A/5A, 1A towards electric current ratio, and accuracy rating is 0.05 to 0.01
Level current transformer is examined and determine.Each electric current of two-stage current transformer is detected Current Mutual Inductance than automatically switching in checking procedure
Device primary connection and secondary connection are disposably completed, and each electric current is sequentially automatically performed calibrating than automatically switching.Support any electric current
Extension wiring more primary and secondary than current transformer, as long as the electric current ratio that standard has can all correspond to wiring.In division of labor wiring
When, without correspondence nameplate, no-load voltage ratio is checked, primary connection end and secondary connection end only need to be corresponded to the patch panel of termination
, device automatically according to typing name plate information automatic switchover binding post, whole process completed by PC control termination,
Wrong rate is reduced, testing efficiency is improved.Two-stage current transformer and tested current transformer primary side in full-automatic wiring unit
Automatic connection part is connected to the conducting copper of correspondence mark by the primary side binding post of transformer by high current wire, no
Same conducting copper connects the normally opened contact of the high-power export-oriented magnetic latching relay of WJ32E-12 types, and relay common port connects
Meet the public conducting copper COM and COM1 of transformer primary side non-polar end.Two-stage current transformer in full-automatic wiring unit
The high-power export-oriented magnetic latching relay of WJ32E-12 types used with tested current transformer primary side automatic connection part, is touched
Point impedance is small, and resistance is stable, and uniformity is strong, using Pulse Width Control, strong antijamming capability, it is to avoid the misoperation in test, enhancing
The stability of work.The conduction of connection transformer primary side binding post and relay normally open contact in full-automatic wiring unit
Copper bar uses high-quality tin-coated copper bar, and big by electric current, impedance is small, and the physical dimension of copper material largely avoided electric current kelvin effect,
Reduce eddy-current loss.Conducting copper is fixed using phenolic resin insulating materials in full-automatic wiring unit, the other gold of insulation
Belong to material, dielectric strength is high, the physical attribute of material can reduce vibration and the noise in up-flow.The metal structure of auxiliary connection platform
Top-quality rubber and Sound-proof material are used between part and full-automatic wiring unit, effectively the hard of buffer metal structural member and copper bar can be connected
Connect, can reduce and receive vibration and noise.Instant playback standard and tested current transformer primary connection information in verification
With secondary connection information and electric current ratio, while anti-to polarity, no-load voltage ratio is wrong, out-of-limit to wait false wiring to be alerted.Solve scene by
Wide in standard no-load voltage ratio scope, class requirement is different, and the situation of wrong line, inefficiency occur in actually calibrating；And
Because each patching operations personnel are not necessarily identical in the different no-load voltage ratio verification process of same standard device, different no-load voltage ratio wiring connect
Touch not necessarily good, the uncertainty increase that same tested transformer can be caused to be deteriorated may cause qualified transformer quilt
The problems such as being considered as unqualified.Operating efficiency is improved, reduces the uncertainty of measurement process.
One or more technical schemes that the application is provided, have at least the following technical effects or advantages：
The present invention only need to be connected to auxiliary connection by primary connection end is corresponding with secondary connection end when examining and determine current transformer
Platform patch panel；No-load voltage ratio switches, automatically controls whole process by host computer and control termination completion；Solve scene due to
Standard no-load voltage ratio scope is wide, and class requirement is different, and the situation of wrong line, inefficiency occur in actually calibrating；And
Because each patching operations personnel are not necessarily identical in no-load voltage ratio verification process different to same standard device, different no-load voltage ratio wire contacts
Uncertainty increase not necessarily good, that same tested transformer can be caused to be deteriorated, may cause qualified transformer by regarding
For it is unqualified the problems such as, operating efficiency can be improved by realizing, reduce measurement process uncertainty technique effect.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention；
Fig. 1 is the structured flowchart of the full-automatic termination of program control type current transformer described in the embodiment of the present invention；
Fig. 2 is the test philosophy figure of the full-automatic termination of program control type current transformer described in the embodiment of the present invention；
Fig. 3 is the primary connection figure of the full-automatic termination of program control type current transformer described in the embodiment of the present invention.
Embodiment
The invention provides a kind of full-automatic termination of program control type current transformer, solve existing wiring efficiency compared with
Technical problem that is low, easily malfunctioning, realizes and realizes automatic connection using the device in the application, and efficiency and accuracy rate are higher
Technique effect.
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting mutually, the application's
Feature in embodiment and embodiment can be mutually combined.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
Implemented with the other modes in the range of being different from being described herein using other, therefore, protection scope of the present invention is not by under
The limitation of specific embodiment disclosed in face.
This application provides a kind of full-automatic termination of program control type current transformer, described device includes：
Auxiliary connection platform, twin-stage standard current transformer, current lifting device, full-automatic wiring unit, control unit, tested electric current
Transformer, control unit and auxiliary connection platform, twin-stage standard current transformer, current lifting device, full-automatic wiring unit, tested electric current
Transformer is all connected with, twin-stage standard current transformer, current lifting device, full-automatic wiring unit, tested current transformer, control unit
It is all connected with auxiliary connection platform；Full-automatic wiring unit is to being tested current transformer, standard two-stage current transformer and current lifting device
Carry out automatic connection；The primary side of the two-stage current transformer is connected with the primary side of tested current transformer, control unit
The secondary side signal of the secondary side of two-stage current transformer and tested current transformer is compared；The current lifting device is used to carry
Power supply stream；Described control unit is used for control device repeat circuit break-make, relay on-off status checkout, Ampereconductors and contact
The inspection of point temperature change, the temperature-humidity monitoring of device local environment.
Wherein, auxiliary connection platform includes, primary connection part, secondary connection part, and primary connection part is by tested electric current
The primary side of transformer and the primary side of twin-stage standard current transformer are separately fixed at wire on different conducting coppers, and two
The secondary side of secondary side and twin-stage standard current transformer that secondary connection part is tested current transformer is connected to apparatus surface pair
Answer on binding post.
As shown in Figure 1, 2, 3, Fig. 3 be two-stage current transformer BL0816 primary connections figure and current lifting device output connection figure,
Fig. 3 lower ends are from left to right followed successively by：Current lifting device output tap, current lifting device output LB common ports (0-5000A), standard
BL0816 primary connections, standard BL0816 primary connection terminals；A kind of full-automatic termination of program control type current transformer,
Including the twin-stage standard current transformer 101 being connected with tested current transformer, current lifting device 102 and full-automatic termination once
Connection part 103,104 and secondary connection part 105,106, standard 101 is connected with the primary side of tested current transformer,
The secondary side signal of the two is compared, and the secondary side non-polar end of twin-stage standard current transformer 101 is connected to full-automatic wiring dress
To is put, tested current transformer non-polar end is connected to full-automatic termination Tx, and both polar ends are connected to full-automatic wiring
Device K, the B5 of twin-stage standard current transformer 101 is connected to full-automatic termination D, by Control System Software control once, two
The folding of secondary connection part relay.
It is connected to complete successively by primary side, the secondary side of tested current transformer and twin-stage standard current transformer 101 are all
On the corresponding binding post of automatic connection device, i.e. primary connection part 103,104 and secondary connection part 105,106.Current lifting device
102 are connected with the primary side 103 of twin-stage standard current transformer 101 and tested current transformer primary side 104 respectively, control system
System judges several circles of current lifting device punching and then control relay folding according to the no-load voltage ratio of tested current transformer.
Method of testing is as follows：
1) two-stage current transformer, current lifting device, tested current transformer primary side, secondary side and device are connected；
2) the tested current transformer relevant parameter of device input；
3) device is according to all relay foldings of no-load voltage ratio automatic decision；
Specifications parameter and wiring of the present invention by the way of nameplate copy and bar code management to tested current transformer
Information is acquired and asset management, supports unified assets to file, error information inquiry, storage, historical data compare and by
Current transformer running status is examined to assess.Device is 5~5000A/5A, 1A towards electric current ratio, and precision is 0.05~0.01 grade of electricity
Current transformer is examined and determine.In checking procedure Plays current transformer and each electric current ratio primary connection of tested current transformer and
Secondary connection is disposably completed, and each electric current is automatically performed calibrating than order.Support any current ratio current transformer once with two
Secondary extension wiring, as long as the electric current ratio that standard has can all correspond to wiring.When dividing the work wiring, without correspondence nameplate, verification
No-load voltage ratio, only need to correspond to primary connection end and secondary connection end the patch panel of termination, device is automatically according to record
The name plate information automatic switchover binding post entered, whole process is completed by PC control termination, reduces wrong rate, improves test
Efficiency.Handover module of device and secondary handover module use high-power export-oriented magnetic latching relay, contact resistance
Small, resistance is stable, and uniformity is strong, using Pulse Width Control, strong antijamming capability, it is to avoid the misoperation in test, enhances work
Stability.Using the tin plating bronze medal of high-quality, big by electric current, impedance is small, and the physical dimension of copper material largely avoided electric current collection skin
Effect, reduces eddy-current loss.Using phenolic resin insulating materials, dielectric strength is high, and the physical attribute of material can reduce up-flow
In vibration and noise.Using top-quality rubber and the Hard link of the effective buffer metal product of Sound-proof material and bronze medal, it can reduce and inhale
Receive and vibrate and noise.Instant playback standard and tested current transformer primary connection information and secondary connection information in verification
And electric current ratio, while anti-to polarity, no-load voltage ratio is wrong, out-of-limit to wait false wiring to be alerted.Scene is solved due to standard no-load voltage ratio model
Enclose wide, class requirement is different, the situation of wrong line, inefficiency occur in actually calibrating；And to same standard
Because each patching operations personnel are not necessarily identical in device difference no-load voltage ratio verification process, different no-load voltage ratio wire contacts are not necessarily good,
The uncertainty increase that same tested transformer is deteriorated can be caused, qualified transformer may be caused to be considered as unqualified etc. and asked
Topic.Operating efficiency is improved, reduces the uncertainty of measurement process.
One or more technical schemes that the application is provided, have at least the following technical effects or advantages：
The present invention only need to be connected to auxiliary connection by primary connection end is corresponding with secondary connection end when examining and determine current transformer
Platform patch panel；No-load voltage ratio switches, automatically controls whole process by host computer and control termination completion；Solve scene due to
Standard no-load voltage ratio scope is wide, and class requirement is different, and the situation of wrong line, inefficiency occur in actually calibrating；And
Because each patching operations personnel are not necessarily identical in no-load voltage ratio verification process different to same standard device, different no-load voltage ratio wire contacts
Uncertainty increase not necessarily good, that same tested transformer can be caused to be deteriorated, may cause qualified transformer by regarding
For it is unqualified the problems such as, operating efficiency can be improved by realizing, reduce measurement process uncertainty technique effect.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (8)
1. a kind of full-automatic termination of program control type current transformer, it is characterised in that described device includes：
Auxiliary connection platform, twin-stage standard current transformer, current lifting device, full-automatic wiring unit, control unit, tested Current Mutual Inductance
Device, control unit and auxiliary connection platform, twin-stage standard current transformer, current lifting device, full-automatic wiring unit, tested Current Mutual Inductance
Device is all connected with, twin-stage standard current transformer, current lifting device, full-automatic wiring unit, tested current transformer, control unit with it is auxiliary
Junction board is helped to be all connected with；Full-automatic wiring unit is carried out to tested current transformer, standard two-stage current transformer and current lifting device
Automatic connection；The primary side of the two-stage current transformer is connected with the primary side of tested current transformer, and control unit will be double
The level secondary side of current transformer is compared with the secondary side signal of tested current transformer；The current lifting device is used to provide electricity
Stream；Described control unit is used for control device repeat circuit break-make, relay on-off status checkout, Ampereconductors and contact point temperature
Degree change inspection, the temperature-humidity monitoring of device local environment.
2. the full-automatic termination of program control type current transformer according to claim 1, it is characterised in that auxiliary connection platform
Including：Primary connection part, secondary connection part, primary connection part is by the primary side of tested current transformer and twin-stage standard
The primary side of current transformer is separately fixed at wire on different conducting coppers, and secondary connection part is tested current transformer
Secondary side and the secondary side of twin-stage standard current transformer be connected on the corresponding binding post of apparatus surface.
3. the full-automatic termination of program control type current transformer according to claim 1, it is characterised in that described full-automatic
Wiring unit carries out automatic connection to tested current transformer, standard two-stage current transformer and current lifting device, is specially：
Automatic connection includes：Once secondary automatic connection and tested current transformer are once secondary connects automatically for two-stage current transformer
Line；Two-stage current transformer primary side binding post Lb, L2, L3 ... L8 connected respectively by wire conducting copper Lb, L2,
L3 ... L8, conducting copper Lb, L2, L3 ... L8 connections relay normally open contact 1, the connection twin-stage electricity of relay normally open contact 2
The public conducting copper COM ends of current transformer, are detected current transformer primary side Lb, Lb1, Lb2, Lb4 and L2, L3 ... L10 and connect
Contact relay normally opened contact 1, the public conducting copper COM1 of the tested current transformer of the connection of normally opened contact 2；Two-stage current transformer
Primary side polar end La, L1 be connected with tested current transformer primary side polar end La, L1 by wire, common port COM and
COM1 connects current lifting device output end respectively, forms primary circuit, and the break-make of control relay realizes two-stage current transformer and tested
Current transformer primary side automatic connection；The secondary side automatic connection method of two-stage current transformer and tested current transformer with
Primary side mode of connection is identical；Two-stage current transformer secondary side common port com leads to mutual-inductor tester T0 terminals, is detected
Current Transformer Secondary side common port com1 leads to current capacity case Z ends, and is connected to mutual inductance through the current capacity case other end
Device tester Tx ends, realize two-stage current transformer and the automatic connection of tested Current Transformer Secondary side.
4. the full-automatic termination of program control type current transformer according to claim 1, it is characterised in that the twin-stage mark
Quasi- current transformer ratio is 5~5000A/5A and 5A/1A, and accuracy rating is 0.002 grade.
5. the full-automatic termination of program control type current transformer according to claim 1, it is characterised in that the current lifting device
Output 0 supplies the primary side of twin-stage standard current transformer to 6000A electric currents.
6. the full-automatic termination of program control type current transformer according to claim 1, it is characterised in that the control list
Member is used to monitor the temperature of Ampereconductors and contact point in real time, and the temperature of 16 temperature control points is gathered by thermal resistance sensor
Degree, through temperature polling instrument by 16 channel temperature values by RS232 communication transfers to host computer, implement temperature monitoring and control.
7. the full-automatic termination of program control type current transformer according to claim 1, it is characterised in that the control list
The folding condition that member is used for the relay to performing no-load voltage ratio switching is tracked monitoring, in time to the relay switch of corresponding actions
Amount is acquired, and shows corresponding states, and alarm prompt is carried out to malfunction.
8. the full-automatic termination of program control type current transformer according to claim 1, it is characterised in that the control list
Member is used for the temperature-humidity monitoring to device local environment, gathers the ambient temperature and humidity of there and then in real time by Temperature Humidity Sensor
And by RS232 communication transfers to host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710432187.6A CN107271944B (en) | 2017-06-09 | 2017-06-09 | Full-automatic wiring device of program-controlled current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710432187.6A CN107271944B (en) | 2017-06-09 | 2017-06-09 | Full-automatic wiring device of program-controlled current transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107271944A true CN107271944A (en) | 2017-10-20 |
| CN107271944B CN107271944B (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710432187.6A Active CN107271944B (en) | 2017-06-09 | 2017-06-09 | Full-automatic wiring device of program-controlled current transformer |
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| CN111487576A (en) * | 2020-04-30 | 2020-08-04 | 浙江省方正校准有限公司 | Miniature current transformer measuring device based on direct measurement method |
| CN112731258A (en) * | 2021-01-13 | 2021-04-30 | 国网新疆电力有限公司营销服务中心(资金集约中心、计量中心) | Auxiliary wiring device of current transformer |
| CN113702892A (en) * | 2021-08-27 | 2021-11-26 | 国网江苏省电力有限公司营销服务中心 | Continuous vibration test device for electronic current transformer and use method of continuous vibration test device |
| CN114823088A (en) * | 2022-06-23 | 2022-07-29 | 国网湖北省电力有限公司营销服务中心(计量中心) | Standard transformer and using method thereof |
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| CN111487576A (en) * | 2020-04-30 | 2020-08-04 | 浙江省方正校准有限公司 | Miniature current transformer measuring device based on direct measurement method |
| CN112731258A (en) * | 2021-01-13 | 2021-04-30 | 国网新疆电力有限公司营销服务中心(资金集约中心、计量中心) | Auxiliary wiring device of current transformer |
| CN113702892A (en) * | 2021-08-27 | 2021-11-26 | 国网江苏省电力有限公司营销服务中心 | Continuous vibration test device for electronic current transformer and use method of continuous vibration test device |
| CN114823088A (en) * | 2022-06-23 | 2022-07-29 | 国网湖北省电力有限公司营销服务中心(计量中心) | Standard transformer and using method thereof |
| CN114823088B (en) * | 2022-06-23 | 2022-09-23 | 国网湖北省电力有限公司营销服务中心(计量中心) | Standard transformer and using method thereof |
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