CN203562292U

CN203562292U - Current transformer

Info

Publication number: CN203562292U
Application number: CN201320569400.5U
Authority: CN
Inventors: 滕元强; 周慰; 曾庆云
Original assignee: HUNAN TAIKE TRANSFORMER CO Ltd
Current assignee: HUNAN TAIKE TRANSFORMER CO Ltd
Priority date: 2013-09-15
Filing date: 2013-09-15
Publication date: 2014-04-23
Anticipated expiration: 2023-09-15

Abstract

The utility model provides a current transformer. The current transformer is composed of a pouring body, an iron core, a primary winding, a secondary winding and primary terminals, wherein the primary winding is formed by round enamelled copper wires penetrating through a central hole of the iron core, the two ends of the primary winding are fixedly connected with a primary wiring incoming terminal and a primary wiring outgoing terminal through leads respectively, the secondary winding is formed by round copper wires being wound on the iron core, the two ends of the secondary winding are connected with corresponding terminals in a wiring terminal box of the secondary winding respectively, the iron core is disposed in the central part of the pouring body, and an installation base plate is arranged on the bottom end of the pouring body. The current transformer provided by the utility model is stable in performance and reliable in operation, has extremely strong practicability and advancement, and is convenient to install, simple to operate, and suitable for use in transformer manufacturing industries and power maintenance.

Description

Current transformer

Technical field

The utility model relates to current transformer.

Background technology

Electric high-voltage switch cubicle adopts inflatable switch cabinet increasingly, inflatable switch cabinet has its many advantage, for example, increased greatly insulation property, and volume is little, maintenance is few, yet the electric current of monitoring current control at present etc. needs to use a plurality of current values simultaneously, have to adopt a plurality of current transformer combinations to form, and the obvious floor space of such combination is huge, the equipment using is just many, investment funds are many, and maintenance is large, and operation cost is high; In the whole bag of tricks on probation, exist at present shortcoming and problem separately, the components and parts of use are more etc., are all not suitable for promoting the use of in practical power systems.

Summary of the invention

The present utility model object is for above-mentioned the deficiencies in the prior art, and a kind of current transformer safe, easy to use is provided.

The utility model is realized by following mode:

Current transformer of the present utility model, is comprised of pour mass, iron core, winding, secondary winding and a primary connection end; One time winding wears the centre bore of iron core with the coiling of circle enamel covered wire, and the two ends of a winding go out to hold corresponding being fixedly connected with the primary connection inlet side at pour mass top with primary connection respectively by lead-in wire; Secondary winding is wrapped on iron core with circular copper wire, the two ends of secondary winding respectively with cast body secondary winding connecting terminal box in corresponding terminal be connected, iron core is positioned at the middle part of pour mass, the bottom of pour mass is provided with mounting base.

Operation principle of the present utility model is identical with the operation principle of known current transformer, feature is to have increased layer insulation thickness, product anti-overvoltage capacity is strengthened, and adopt winding to wear iron core and be wrapped in secondary winding on the iron core structure that pours into an integrated entity, improve dielectric strength, strengthen safety and reliability, improved the precision of monitoring, metering; No-load loss and the no-load current of high-quality laminated core are all little, have improved carrying load ability and the operating efficiency of product.

Accompanying drawing explanation

Fig. 1 is the internal structure schematic diagram of current transformer;

Fig. 2 is that schematic diagram is looked on a left side of Fig. 1;

Fig. 3 is the profile schematic diagram of current transformer.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail:

A kind of current transformer is comprised of pour mass 1, iron core 3, winding 2, secondary winding 4 and a primary connection end 6,5; It is characterized in that the 2 use circle enamel covered wire coilings of winding wear the centre bore of iron core 3, the two ends of a winding 29 go out end 5 corresponding being fixedly connected with the primary connection inlet side 6 at pour mass 1 top with primary connection respectively by going between; Secondary winding 4 use circular copper wires are wrapped on iron core 3, and the two ends of secondary winding 4 are connected with the corresponding terminal in secondary winding 4 connecting terminal boxes 8 of the bottom of pour mass 1 respectively, and iron core 3 is positioned at the middle part of pour mass 1, and the bottom of pour mass 1 is provided with mounting base 7.

It is an overall structure by pour mass 1, iron core 3, winding 2, secondary winding 4, a primary connection into and out of end 6,5 and secondary winding connecting terminal box 8 use poured with epoxy resin for the utility model current transformer.

Claims

1. a current transformer, is comprised of pour mass (1), iron core (3), a winding (2), secondary winding (4) and primary connection end (6), (5); It is characterized in that a winding (2) wears the centre bore of iron core (3) with circle enamel covered wire coiling, the two ends of a winding (2) go out to hold respectively that (5) are corresponding to be fixedly connected with primary connection with the primary connection inlet side (6) at pour mass (1) top by lead-in wire (9); Secondary winding (4) is wrapped on iron core (3) with circular copper wire, the two ends of secondary winding (4) are connected with the corresponding terminal in secondary winding (4) connecting terminal box (8) of pour mass (1) bottom respectively, iron core (3) is positioned at the middle part of pour mass (1), and the bottom of pour mass (1) is provided with mounting base (7).

2. current transformer according to claim 1, is characterized in that pour mass (1), iron core (3), a winding (2), secondary winding (4), primary connection are an overall structure into and out of end (6), (5) and secondary winding connecting terminal box (8) with poured with epoxy resin.