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Quick sorting instrument for current transformer iron cores

A current transformer and iron core technology, which is applied in the field of current transformer iron core rapid sorting instrument, can solve the problems of low work efficiency, time-consuming, complicated process, etc., so as to improve work efficiency, avoid complicated procedures and instrument costs low effect

Active Publication Date: 2016-09-14
GUANGXI POWER GRID ELECTRIC POWER RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned method of sorting iron cores by measuring the core loss requires winding primary windings and secondary windings on the iron cores to be tested, and after the measurement is completed, the primary windings and secondary windings need to be removed. The process is complicated. The workload is large, time-consuming, and work efficiency is low; using a magnetic material tester to apply alternating current to the primary winding of the iron core to be tested and using an electronic scale to obtain the quality of the iron core to be tested, the cost of the measuring instrument is high, and the operation is complicated, which further leads to work low efficiency

Method used

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  • Quick sorting instrument for current transformer iron cores
  • Quick sorting instrument for current transformer iron cores
  • Quick sorting instrument for current transformer iron cores

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Embodiment 1

[0027] The embodiment of the present invention provides a kind of current transformer iron core fast sorting instrument, such as figure 1 As shown, it includes: an excitation circuit 1, a measurement circuit 2 and a support platform 3; an excitation source 11 is connected to the excitation circuit 1, and a measurement meter 21 is connected to the measurement circuit 2; excitation contacts 31 are respectively set on the support platform 3 and measuring contacts 32. The excitation source 11 is an AC power supply, connected in series in the excitation circuit 1 ; the measuring meter 21 is a voltmeter, connected in parallel in the measurement circuit 2 . The supporting platform 3 is made of insulating material, such as wood, plastic and the like.

[0028] The current transformer (Current transformer) works on the basis of the principle of electromagnetic induction, converting a larger primary current into a smaller secondary current. The current transformer consists of an iron c...

Embodiment 2

[0037] The embodiment of the present invention provides a kind of current transformer iron core fast sorting instrument, such as figure 2 As shown, it includes: excitation circuit 1, measurement circuit 2, support platform 3, measurement frame 4, fixed frame 5 and movable connection device 6.

[0038]The excitation circuit 1 is connected with an excitation source 11 , and the measurement circuit 2 is connected with a measuring meter 21 ; the support platform 3 is respectively provided with an excitation contact 31 and a measurement contact 32 . The excitation source 11 is a milliampere level AC power supply, which is connected in series in the excitation circuit, and the measuring meter 21 is a voltmeter, which is connected in parallel in the measuring circuit 2 .

[0039] Such as image 3 As shown, in order to reduce the measurement error, the measurement circuit 2 is symmetrically distributed on both sides of the central axis of the iron core to be tested, so this embodime...

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Abstract

The invention discloses a quick sorting instrument for current transformer iron cores, and relates to the technical field of electricity measuring instruments. The quick sorting instrument can eliminate complex procedures of winding mounting and demounting, shorten working hours, and improve work efficiency, and is simple to operate and low in cost. The quick sorting instrument is characterized by comprising an excitation circuit, a measurement circuit and a supporting table, wherein an excitation source is connected to the excitation circuit; a gauge is connected to the measurement circuit; and an excitation contact and a measurement contact are arranged on the supporting table separately. The quick sorting instrument is mainly used for sorting the current transformer iron cores.

Description

technical field [0001] The invention relates to the field of electrical measuring instruments, in particular to a rapid sorting instrument for iron cores of current transformers. Background technique [0002] Current transformer (Current transformer) is a common equipment in electrical measurement and relay protection, which consists of iron core and winding. Iron core loss is the ineffective energy consumed by the iron core material per unit mass under the action of an alternating magnetic field. It is a key factor to measure the performance of a current transformer. Therefore, it is generally measured by measuring the loss of the iron core in the current transformer. sorting. [0003] The iron core sorting method in the prior art is: winding the primary winding and the secondary winding on the iron core to be tested; using a magnetic material tester to apply alternating current to the primary winding of the iron core to be tested, so that an induced voltage is generated o...

Claims

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Application Information

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IPC IPC(8): B07C5/344
CPCB07C5/344
Inventor 李刚唐利涛杨舟蒋雯倩龙东潘俊涛梁捷
Owner GUANGXI POWER GRID ELECTRIC POWER RES INST
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