Open type current transformer

Abstract

The invention discloses an open type current transformer. The open type current transformer comprises a transformer body a and a transformer body b, wherein an iron core a is arranged in the transformer body a, an iron core b is arranged in the transformer body b, and the transformer body a and the transformer body b are connected through a connecting piece. The open type current transformer is characterized in that an elastic sheet is arranged between the iron core a and the shell a; the iron core a pops up or retracts under the action of the elastic sheet; the iron core b is provided with asecondary winding, and the secondary winding is led out through a secondary terminal 9 of the shell b; the iron core b is fixedly arranged, and two end surfaces respectively exceed the end surface ofthe shell b by 1mm; fixing devices are symmetrically arranged on the shell a and the shell b, each fixing device comprises an arch-shaped clamping plate, rectangular planes are arranged at the two ends of each clamping plate, and an anti-skid strip is arranged on the arch-shaped inner surface in the middle of each clamping plate; and the clamping plates are fixed on the fixed seats of the shell aand the shell b through fastening screws. The open type current transformer has the advantages of being simple in structure, convenient to use and operate, capable of saving time, high in transformerfolding accuracy and convenient to install and fix, thereby ensuring stable performance of the transformer.

Description

technical field [0001] The invention relates to the field of transformers, in particular to an open-type current transformer for automation transformation of a distribution network and a rural power network. Background technique [0002] With the rapid development of my country's economic construction and the improvement of people's living standards, the requirements for power quality and reliability of distribution network are getting higher and higher. Therefore, the automation transformation of urban and rural distribution networks is continuously carried out. Many switching stations and ring main units that have been in operation were not equipped with current transformers originally. In order to meet the needs of distribution network automation transformation, current transformers need to be added. This work is faced with many problems such as "no location, difficult construction, difficult power outage". A split open transformer came into being, because it is cut from...

AI Technical Summary

Problems solved by technology

However, there are still some disadvantages in the actual installation process of this type of transformer: 1. Split structure, the two halves of the transformer are completely separated, if the installation is uneven, the accuracy of the transformer will be greatly affected; , to make the two halves of the transformer fit together flush, and at the same time tighten with a steel belt, the operation is inconvenient and the efficiency is not high; 3. The iron core divided into two halves is fixed with a throat hoop, and the contact surface of the iron core is affected by the temperature difference between the four seasons, thermal expansion and cold contraction 4. When the transformer is fixed on the cable or copper bar, the internal rubber ring cannot be adjusted, and the fixing effect is not ideal.

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