CN203965616U - Single-phase or three phases electronic energy meter stationary magnetic field affects test unit - Google Patents
Single-phase or three phases electronic energy meter stationary magnetic field affects test unit Download PDFInfo
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Abstract
Single-phase or three phases electronic energy meter stationary magnetic field affects test unit, and it relates to electric energy meter stationary magnetic field affects test unit.It for solve existing for electronic electric energy meter stationary magnetic field affect test unit mainly exist magnetic field cannot be put on to detected table all can surface of contact and cannot realize the problem that robotization is tested.The Keyboard Control signal input part of controller is connected with the Keyboard Control signal output part of supervisory keyboard; The control signal output terminal of controller is connected with the control signal input end of magnetic field generator; The current signal input end of magnetic field generator is connected with the current signal output end of constant0current generator; The data detection signal I/O of magnetic field detector is connected with the data detection signal I/O of magnetic field generator.It is applicable to all kinds of single-phase or three phases electronic energy meter stationary magnetic field impact tests.
Description
Technical field
The utility model relates to electric energy meter stationary magnetic field affects test unit.
Background technology
Domesticly for electronic electric energy meter stationary magnetic field, affect test unit at present and mainly contain three major types, the first kind is at Helmholtz coils, to pass into DC current to produce stationary magnetic field, as the PFMF-4108G of Suzhou 3CTest Electronic Co., Ltd., but its magnetic induction density that arrives sample table is very faint, and do not meet standard GB/T/T17215.322-2008/IEC62053-22:2003 about the requirement of static electric energy meter stationary magnetic field impact test, all accessible surfaces of the instrument that the magnetic fields producing with standard electric magnet is installed when by normal use.Its magnetic potential value is 1000At.Its shortcoming is 1, cannot produces the magnetic field intensity of standard-required, 2, cannot meet standard-required put on all of detected table can surface of contact.Equations of The Second Kind is in huge C shape magnet coil, to pass into DC current to produce stationary magnetic field, and the test unit of this structure exists equally
Shortcoming: all contact that puts on detected table that 1, cannot meet standard-required.2, cannot realize robotization test.The 3rd class is standard electric magnet to be passed into DC current produce stationary magnetic field, hand-held electromagnet test.Current domestic most manufacturers and metering institute adopt the method more.The shortcoming that this test unit exists is 1, cannot avoids the injury of magnetic field to human body.2, cannot realize robotization test.To sum up, existing for electronic electric energy meter stationary magnetic field affect test unit mainly exist magnetic field cannot be put on to detected table all can surface of contact and cannot realize the shortcoming of robotization test.
Utility model content
The utility model for solve existing for electronic electric energy meter stationary magnetic field affect test unit mainly exist magnetic field cannot be put on to detected table all can surface of contact and cannot realize the problem of robotization test, and proposed single-phase or three phases electronic energy meter stationary magnetic field, affect test unit.
Single-phase or three phases electronic energy meter stationary magnetic field affects test unit, and it comprises controller, magnetic field generator, magnetic field detector, constant0current generator and supervisory keyboard; The Keyboard Control signal input part of described controller is connected with the Keyboard Control signal output part of supervisory keyboard; The control signal output terminal of controller is connected with the control signal input end of magnetic field generator; The current signal input end of magnetic field generator is connected with the current signal output end of constant0current generator; The data detection signal I/O of magnetic field detector is connected with the data detection signal I/O of magnetic field generator.
The utility model is realized the synchro control with electric energy meter checking device, for realizing testing equipment robotization, provides total solution.Single-phase meter is realized and all can be contacted 18 positions, and three-phase meter is realized and all can be contacted 28 positions;
In the application, magnetic field generator adopts two cover Double-U-shaped coil groups to be placed in respectively all accessible surfaces of single-phase electric energy meter, three-phase electric energy meter.T-shaped column iron, alloy, ferrite iron core, coil groups, and can regulate within the scope of 2cm.Monitor in the magnetic field that magnetic field detector adopts teslameter to produce magnetic field generator; Constant0current generator provides Constant Direct Current electric current for magnetic field generator.Controller is controlled duty comprehensively.This test unit is taking into full account that state net is single-phase, on the experiment basis of three-phase electric energy meter, static electric energy meter for compatible other specifications, field coil can regulate three direction positions, and the stationary magnetic field that substantially can meet the static electric energy meter using on market affects testing requirements., adopt the measure of magnetic field generator multilayer screen, for solution equipment produces a large amount of electromagnetic interference (EMI), improve the reliability of controlling, adopt industrial control computer PLC is main control unit simultaneously, effectively completes complex control, guarantees reliability.Field coil and unshakable in one's determination through special processing, guarantees that each field coil characteristic is consistent.
The utility model content is not limited only to the content of the respective embodiments described above, and the combination of one of them or several embodiments equally also can realize the object of utility model.
Accompanying drawing explanation
Fig. 1 is the modular structure schematic diagram that the single-phase of embodiment one or three phases electronic energy meter stationary magnetic field affect test unit;
Fig. 2 is the modular structure schematic diagram that the single-phase of embodiment two or three phases electronic energy meter stationary magnetic field affect test unit;
Fig. 3 is the modular structure schematic diagram that the single-phase of embodiment three or three phases electronic energy meter stationary magnetic field affect test unit;
Fig. 4 is the modular structure schematic diagram that the single-phase of embodiment four or three phases electronic energy meter stationary magnetic field affect test unit;
Fig. 5 is the modular structure schematic diagram of the controller 1 of embodiment five;
Fig. 6 is the modular structure schematic diagram of the controller 1 of embodiment six;
Fig. 7 is the modular structure schematic diagram of the controller 1 of embodiment seven;
Fig. 8 is the vertical view of the magnetic field generator 2 described in embodiment nine;
Fig. 9 is the upward view of the magnetic field generator 2 described in embodiment nine;
Figure 10 is the vertical view of the magnetic field generator 2 described in embodiment ten;
Figure 11 is the upward view of the magnetic field generator 2 described in embodiment ten;
Figure 12 is current direction schematic diagram in energization solenoid;
Figure 13 is ring current circuit theory schematic diagram;
Figure 14 is field source discretize schematic diagram described in the application.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1, described in present embodiment, single-phase or three phases electronic energy meter stationary magnetic field affects test unit, and it comprises controller 1, magnetic field generator 2, magnetic field detector 3, constant0current generator 4 and supervisory keyboard 5; The Keyboard Control signal input part of described controller 1 is connected with the Keyboard Control signal output part of supervisory keyboard 5; The control signal output terminal of controller 1 is connected with the control signal input end of magnetic field generator 2; The current signal input end of magnetic field generator 2 is connected with the current signal output end of constant0current generator 4; The data detection signal I/O of magnetic field detector 3 is connected with the data detection signal I/O of magnetic field generator 2.
Embodiment two: in conjunction with Fig. 2, present embodiment is described, present embodiment and embodiment one difference are that it also comprises programmable device 6; The programming data signal output part of described programmable device 6 is connected with the programming data signal input part of controller 1.Other composition and connected mode are identical with embodiment one.
Embodiment three: in conjunction with Fig. 3, present embodiment is described, present embodiment and embodiment one or two differences are that it also comprises I/O striking machine 7; The I/O growth data I/O of described I/O striking machine 7 is connected with the I/O growth data I/O of controller 1.Other composition and connected mode are identical with embodiment one or two.
Embodiment four: in conjunction with Fig. 4, present embodiment is described, present embodiment and embodiment three differences are that it also comprises pilot lamp 8, and the driving signal input of pilot lamp 8 is connected with the driving signal output part of controller 1.Other composition and connected mode are identical with embodiment three.
Embodiment five: in conjunction with Fig. 5, present embodiment is described, present embodiment and embodiment four differences are that described controller 1 comprises microprocessor 1-1, input signal unit 1-2, output signal unit 1-3, data bus 1-4, constant voltage power supply 1-5 and storer 1-6; The input block data-signal input end of microprocessor 1-1 is connected with the input block data-signal output terminal of input signal unit 1-2 by data bus 1-4; The output unit data-signal output terminal of microprocessor 1-1 is connected with the output unit data-signal input end of output signal unit 1-3 by data bus 1-4; The storage data input/output terminal of microprocessor 1-1 is connected with the storage data input/output terminal of storer 1-6 by data bus 1-4; Three feeder ears of constant voltage power supply 1-5 connect respectively the receiving end of microprocessor 1-1, input signal unit 1-2 and output signal unit 1-3.Other composition and connected mode are identical with embodiment four.
Embodiment six: in conjunction with Fig. 6, present embodiment is described, present embodiment and embodiment five differences are that it also comprises peripheral hardware I/O expansion interface 1-7; The peripheral hardware I/O data-signal I/O of described peripheral hardware I/O expansion interface 1-7 is connected with the peripheral hardware I/O data-signal I/O of microprocessor 1-1 by data bus 1-4; The peripheral hardware I/O signal input part of peripheral hardware I/O expansion interface 1-7 is the programming data signal input part of controller 1.Other composition and connected mode are identical with embodiment five.
Embodiment seven: in conjunction with Fig. 7, present embodiment is described, present embodiment and embodiment five differences are that it also comprises I/O expansion interface 1-8; The I/O growth data I/O of described I/O expansion interface 1-8 is connected with the I/O growth data I/O of microprocessor 1-1 by data bus 1-4.Other composition and connected mode are identical with embodiment five.
Embodiment eight: present embodiment and embodiment one difference are that magnetic field generator 2 adopts single-phase electronic energy meter magnetic field generator or three phases electronic energy meter magnetic field generator.
Embodiment nine: present embodiment is described in conjunction with Fig. 8, Fig. 9, present embodiment and embodiment eight differences are that magnetic field generator 2 adopts single-phase electronic energy meter magnetic field generator, and described single-phase electronic energy meter magnetic field generator comprises top T shaped iron core coil array 2-1, two the T-shaped iron-core coil array of side 2-2, the T-shaped iron-core coil array of bottom test probe group 2-3 and upper surface 2-4; Top T shaped iron core coil array 2-1 and two the T-shaped iron-core coil array of side 2-2 all adopt the T-shaped iron-core coil array of 3*1 rectangle, and upper surface T-shaped iron-core coil array 2-4 adopts the T-shaped iron-core coil array of 3*3 rectangle; Described top T shaped iron core coil array 2-1, two the T-shaped iron-core coil array of side 2-2, the formed cavitys of bottom test probe group 2-3 and upper surface T-shaped iron-core coil array 2-4 are electric energy meter test chamber to be measured; Two the T-shaped iron-core coil array of side 2-2 are symmetrically placed in respectively electric energy meter to be measured both sides; Top T shaped iron core coil array 2-1 is placed in electric energy meter to be measured top; Upper surface T-shaped iron-core coil array 2-4 is vertically installed on the upper surface of electric energy meter to be measured; Bottom test probe group 2-3 contacts with the test contact of electric energy meter to be measured; The control signal input end of described top T shaped iron core coil array 2-1, two the T-shaped iron-core coil array of side 2-2, bottom test probe group 2-3 and upper surface T-shaped iron-core coil array 2-4 is connected with the control signal output terminal of controller 1 by data bus.Other composition and connected mode are identical with embodiment eight.
Embodiment ten: present embodiment is described in conjunction with Figure 10, Figure 11, present embodiment and embodiment eight differences are that magnetic field generator 2 adopts three phases electronic energy meter magnetic field generator, and described three phases electronic energy meter magnetic field generator comprises three-phase top T shaped iron core coil array 2-5, two the T-shaped iron-core coil array of three-phase side 2-6, the T-shaped iron-core coil array of three-phase bottom test probe group 2-7 and three-phase upper surface 2-8; Three-phase top T shaped iron core coil array 2-5 and two the T-shaped iron-core coil array of three-phase side 2-6 all adopt the T-shaped iron-core coil array of 4*1 rectangle, and three-phase upper surface T-shaped iron-core coil array 2-8 adopts the T-shaped iron-core coil array of 4*4 rectangle; Described three-phase top T shaped iron core coil array 2-5, two the T-shaped iron-core coil array of three-phase side 2-6, the formed cavitys of three-phase bottom test probe group 2-7 and three-phase upper surface T-shaped iron-core coil array 2-8 are electric energy meter test chamber to be measured; Two the T-shaped iron-core coil array of three-phase side 2-6 are symmetrically placed in respectively electric energy meter to be measured both sides; Three-phase top T shaped iron core coil array 2-5 is placed in electric energy meter to be measured top; Three-phase upper surface T-shaped iron-core coil array 2-8 is vertically installed on the upper surface of electric energy meter to be measured; Three-phase bottom test probe group 2-7 contacts with the test contact of electric energy meter to be measured; The control signal input end of described three-phase top T shaped iron core coil array 2-5, two the T-shaped iron-core coil array of three-phase side 2-6, three-phase bottom test probe group 2-7 and three-phase upper surface T-shaped iron-core coil array 2-8 is connected with the control signal output terminal of controller 1 by data bus.Other composition and connected mode are identical with embodiment eight.
Principle of work of the present utility model:
Electronic electric energy meter is due to the impact of work on the spot environment, and various performance parameters is normal different from the reference conditions of vertification regulation or prescribed by standard fundamental error.For example, environment temperature, space magnetic field and line voltage frequency when, electronic electric energy meter is installed all may change in sizable scope.When a certain condition departs from after term of reference, now the error of electric energy meter and the difference of fundamental error are called the electric energy meter additive error that this condition causes.For guaranteeing the functional reliability of electric energy meter in various site environments, electric energy meter standard has all stipulated to every additive error the ultimate value allowing.
First, according to the type of electric energy meter to be measured, electric energy meter to be measured is positioned in the corresponding electric energy meter test chamber of magnetic field generator 2, and bottom test probe group is contacted with the test contact of electric energy meter to be measured;
By supervisory keyboard 5 or programmable device 6, to microprocessor 1-1, transmit control signal, microprocessor 1-1 sends synchronizing signal by synchronizing signal control end to magnetic field generator 2 and constant0current generator 4, to realize the synchro control to magnetic field generator 2 and constant0current generator 4;
Microprocessor 1-1 transmits control signal and makes the top T shaped iron core coil array in magnetic field generator 2, two the T-shaped iron-core coil arrays of side, the T-shaped iron-core coil arrays of bottom test probe group and upper surface obtain electric work, constant0current generator 4 passes into the electric current of fixed frequency to top T shaped iron core coil array, two the T-shaped iron-core coil arrays of side, the T-shaped iron-core coil arrays of bottom test probe group and upper surface simultaneously, make magnetic field generator 2 produce stationary magnetic field, whether the stationary magnetic field that magnetic field detector 3 detects magnetic field generator 2 generations meets testing requirements; First electric energy meter to be measured is first placed under the reference conditions of vertification regulation or prescribed by standard fundamental error, then by the order of vertification regulation or prescribed by standard, apply excitation value, the fundamental error value Β when simulating identical experiment environment but working without the lower electric energy meter normal power-up of stationary magnetic field impact
1the line item of going forward side by side; Controller 1 also has single-phase electric energy meter and three-phase electric energy meter translation function, to realize the detection to single-phase electric energy meter and three-phase electric energy meter.In other influences amount, be under reference condition, electric energy meter to be measured is placed in to the center of the stationary magnetic field of magnetic field generator 2 generations, electric energy meter to be measured is added the excitation value of fundamental error test determination and remained unchanged, by each iron-core coil array in 4 pairs of magnetic field generators 2 of constant0current generator, pass to the electric current of certain frequency, and the induction level that regulates size of current to produce with each iron-core coil array of determining in magnetic field generator 2, and each iron-core coil array during with normal use all accessible surfaces of electric energy meter to be measured contact, observe the displayed value of tested table, show that within a certain period of time electric energy meter is subject to stationary magnetic field to affect fundamental error value Β
2the line item of going forward side by side, now obtain additive error=Β
2-Β
1,
By calculating electric energy meter, carry out the additive error of noise immunity test, compare and confirm whether it meets the demands with electric energy meter required standard.Device described in the utility model also has overheat protective function; controller 1 can receive the temperature signal that temperature sensor sends; and compare with temperature alarm threshold value, as transfinited, realize the power down process to detection system, realize the overheating protection to pick-up unit.
The Computing Principle of the magnetic field intensity of stationary magnetic field described in the utility model:
Magnetic field intensity use, represents by Parameter H, and itself and electric current have direct relation, and its unit is A/m; Magnetic induction density, represents by B parameter, and itself and core material factor and magnetic field intensity H relation are as follows:
μ
0------magnetic permeability in vacuum, the parameter of sign magnetic medium characteristic;
H-------magnetic field intensity;
B-------magnetic induction density;
Suppose that at radius be r
1and r
2two circumference between, having a total number of turns is the even close around planar coil of N, and current-carrier solenoid is wound around closely, it can be regarded as by many concentric circular electric currents and be formed, as shown in figure 12.In order to meet test coil, to reach the requirement of certain magnetic field intensity, at hub of a spool, add iron core to increase magnetic field intensity.By selected coil shape, iron core height, coiling wire diameter, and calculate magnetic close (magnetic induction density) according to wire diameter, load, core dimensions, coil turn etc., obtain best ampere turns.
Suppose that coil current is I, mean radius is r
0loop checking installation, as shown in figure 13, set up the basic calculating model of axisymmetrical magnetic field, try to achieve along the magnetic induction density of arbitrary some P on this ring current loop axis and be
formula 4 parameter Z-Z' be P point to the distance of core section, the direction of magnetic induction density B is along the positive dirction of z axle.
For the analysis of the current-carrier solenoid coil magnetic field being formed by multiturn toroid winding, application superposition principle, the effect stack that magnetic field at this moment to be asked can be produced separately by each annular current-carrying coil solves.The electric current I being about in each circle coil is regarded " the electric current silk " that concentrates on kernel of section as, but this can bring certain error under the thicker situation of conductor.Therefore, comparatively ideal field source discretize disposal route is: as shown in figure 14, the outer contour of getting current-carrying coil is field source circumference, and thinks that the interior distribution of current of field source section S is even, i.e. J=NI/S;
In formula, N is the number of turn of each solenoid coil.Cross section is separated into n small size, i small size △ S
i(i=1,2 ... n) electric current in is △ I
i=J △ S
i;
This electric current is regarded as and concentrated on △ I
ithe electric current silk at center.Like this, when cross section is discrete, be the small size △ S of sufficient amount
itime, just can guarantee that result of calculation has satisfied precision.Because the magnetic direction that on whole coil, each small size electric current produces at P point place is identical, thus field source is discrete complete after, utilize superposition principle and formula 2, just can calculate total magnetic induction density value at arbitrary some P place on axis and be
The material adopting due to all coils in coil groups and iron core, around referring to that wire diameter, core dimensions, height and given size of current are in full accord, therefore the field strength values that each point position iron-core coil reaches is the same and invariable.
By above formula, can calculate single-phase, three-phase electric energy meter each point position is required the stationary magnetic field induction reaching, and electric energy meter is carried out to noise immunity test.
Claims (10)
1. single-phase or three phases electronic energy meter stationary magnetic field affects test unit, it is characterized in that it comprises controller (1), magnetic field generator (2), magnetic field detector (3), constant0current generator (4) and supervisory keyboard (5); The Keyboard Control signal input part of described controller (1) is connected with the Keyboard Control signal output part of supervisory keyboard (5); The control signal output terminal of controller (1) is connected with the control signal input end of magnetic field generator (2); The current signal input end of magnetic field generator (2) is connected with the current signal output end of constant0current generator (4); The data detection signal I/O of magnetic field detector (3) is connected with the data detection signal I/O of magnetic field generator (2).
2. single-phase or three phases electronic energy meter stationary magnetic field according to claim 1 affects test unit, it is characterized in that it also comprises programmable device (6); The programming data signal output part of described programmable device (6) is connected with the programming data signal input part of controller (1).
3. single-phase or three phases electronic energy meter stationary magnetic field according to claim 1 and 2 affects test unit, it is characterized in that it also comprises I/O striking machine (7); The I/O growth data I/O of described I/O striking machine (7) is connected with the I/O growth data I/O of controller (1).
4. single-phase or three phases electronic energy meter stationary magnetic field according to claim 3 affects test unit, it is characterized in that it also comprises pilot lamp (8), the driving signal input of pilot lamp (8) is connected with the driving signal output part of controller (1).
5. single-phase or three phases electronic energy meter stationary magnetic field according to claim 4 affects test unit, it is characterized in that described controller (1) comprises microprocessor (1-1), input signal unit (1-2), output signal unit (1-3), data bus (1-4), constant voltage power supply (1-5) and storer (1-6); The input block data-signal input end of microprocessor (1-1) is connected with the input block data-signal output terminal of input signal unit (1-2) by data bus (1-4); The output unit data-signal output terminal of microprocessor (1-1) is connected with the output unit data-signal input end of output signal unit (1-3) by data bus (1-4); The storage data input/output terminal of microprocessor (1-1) is connected with the storage data input/output terminal of storer (1-6) by data bus (1-4); Three feeder ears of constant voltage power supply (1-5) connect respectively the receiving end of microprocessor (1-1), input signal unit (1-2) and output signal unit (1-3).
6. single-phase or three phases electronic energy meter stationary magnetic field according to claim 5 affects test unit, it is characterized in that it also comprises peripheral hardware I/O expansion interface (1-7); The peripheral hardware I/O data-signal I/O of described peripheral hardware I/O expansion interface (1-7) is connected with the peripheral hardware I/O data-signal I/O of microprocessor (1-1) by data bus (1-4); The peripheral hardware I/O signal input part of peripheral hardware I/O expansion interface (1-7) is the programming data signal input part of controller (1).
7. single-phase or three phases electronic energy meter stationary magnetic field according to claim 5 affects test unit, it is characterized in that it also comprises I/O expansion interface (1-8); The I/O growth data I/O of described I/O expansion interface (1-8) is connected with the I/O growth data I/O of microprocessor (1-1) by data bus (1-4).
8. single-phase or three phases electronic energy meter stationary magnetic field according to claim 1 affects test unit, it is characterized in that magnetic field generator (2) adopts single-phase electronic energy meter magnetic field generator or three phases electronic energy meter magnetic field generator.
9. single-phase or three phases electronic energy meter stationary magnetic field according to claim 8 affects test unit, it is characterized in that magnetic field generator (2) adopts single-phase electronic energy meter magnetic field generator, described single-phase electronic energy meter magnetic field generator comprises top T shaped iron core coil array (2-1), two T-shaped iron-core coil arrays of side (2-2), bottom test probe group (2-3) and the T-shaped iron-core coil array in upper surface (2-4); Top T shaped iron core coil array (2-1) and two T-shaped iron-core coil arrays of side (2-2) all adopt the T-shaped iron-core coil array of 3*1 rectangle, and the T-shaped iron-core coil array in upper surface (2-4) adopts the T-shaped iron-core coil array of 3*3 rectangle; Described top T shaped iron core coil array (2-1), two T-shaped iron-core coil arrays of side (2-2), bottom test probe group (2-3) and the formed cavity of the T-shaped iron-core coil array in upper surface (2-4) are electric energy meter test chamber to be measured; Two T-shaped iron-core coil arrays of side (2-2) are symmetrically placed in respectively electric energy meter to be measured both sides; Top T shaped iron core coil array (2-1) is placed in electric energy meter to be measured top; The T-shaped iron-core coil array in upper surface (2-4) is vertically installed on the upper surface of electric energy meter to be measured; Bottom test probe group (2-3) contacts with the test contact of electric energy meter to be measured; The control signal input end of described top T shaped iron core coil array (2-1), two T-shaped iron-core coil arrays of side (2-2), bottom test probe group (2-3) and the T-shaped iron-core coil array in upper surface (2-4) is connected with the control signal output terminal of controller (1) by data bus.
10. single-phase or three phases electronic energy meter stationary magnetic field according to claim 8 affects test unit, it is characterized in that magnetic field generator (2) adopts three phases electronic energy meter magnetic field generator, described three phases electronic energy meter magnetic field generator comprises three-phase top T shaped iron core coil array (2-5), two T-shaped iron-core coil arrays of three-phase side (2-6), three-phase bottom test probe group (2-7) and the T-shaped iron-core coil array in three-phase upper surface (2-8); Three-phase top T shaped iron core coil array (2-5) and two T-shaped iron-core coil arrays of three-phase side (2-6) all adopt the T-shaped iron-core coil array of 4*1 rectangle, and the T-shaped iron-core coil array in three-phase upper surface (2-8) adopts the T-shaped iron-core coil array of 4*4 rectangle; Described three-phase top T shaped iron core coil array (2-5), two T-shaped iron-core coil arrays of three-phase side (2-6), three-phase bottom test probe group (2-7) and the formed cavity of the T-shaped iron-core coil array in three-phase upper surface (2-8) are electric energy meter test chamber to be measured; Two T-shaped iron-core coil arrays of three-phase side (2-6) are symmetrically placed in respectively electric energy meter to be measured both sides; Three-phase top T shaped iron core coil array (2-5) is placed in electric energy meter to be measured top; The T-shaped iron-core coil array in three-phase upper surface (2-8) is vertically installed on the upper surface of electric energy meter to be measured; Three-phase bottom test probe group (2-7) contacts with the test contact of electric energy meter to be measured; The control signal input end of described three-phase top T shaped iron core coil array (2-5), two T-shaped iron-core coil arrays of three-phase side (2-6), three-phase bottom test probe group (2-7) and the T-shaped iron-core coil array in three-phase upper surface (2-8) is connected with the control signal output terminal of controller (1) by data bus.
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| CN201420411796.5U CN203965616U (en) | 2014-07-24 | 2014-07-24 | Single-phase or three phases electronic energy meter stationary magnetic field affects test unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076322A (en) * | 2014-07-24 | 2014-10-01 | 黑龙江省电工仪器仪表工程技术研究中心有限公司 | Single-phase or three-phase electric energy meter constant magnetic field affection test device |
| CN109471054A (en) * | 2018-10-29 | 2019-03-15 | 哈尔滨电工仪表研究所有限公司 | Fully-automatic intelligent electric energy meter stationary magnetic field influences pilot system |
-
2014
- 2014-07-24 CN CN201420411796.5U patent/CN203965616U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104076322A (en) * | 2014-07-24 | 2014-10-01 | 黑龙江省电工仪器仪表工程技术研究中心有限公司 | Single-phase or three-phase electric energy meter constant magnetic field affection test device |
| CN104076322B (en) * | 2014-07-24 | 2017-01-11 | 黑龙江省电工仪器仪表工程技术研究中心有限公司 | Single-phase or three-phase electric energy meter constant magnetic field affection test device |
| CN109471054A (en) * | 2018-10-29 | 2019-03-15 | 哈尔滨电工仪表研究所有限公司 | Fully-automatic intelligent electric energy meter stationary magnetic field influences pilot system |
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