CN2472324Y

CN2472324Y - Openable current mutual inductor

Info

Publication number: CN2472324Y
Application number: CN 01238879
Authority: CN
Inventors: 周克毅; 倪增华
Original assignee: JIADING MUTUAL INDUCTOR FACTORY SHANGHAI
Current assignee: JIADING MUTUAL INDUCTOR FACTORY SHANGHAI
Priority date: 2001-04-16
Filing date: 2001-04-16
Publication date: 2002-01-16
Anticipated expiration: 2011-04-16

Abstract

The utility model relates to an open-type current transformer, which comprises two semicircular iron cores and a fastening strap; the two semicircular ring-shaped iron cores are sealed into two semicircular ring-shaped plastic housings by epoxy resin mixed glue; the outside of the two semicircular ring-shaped plastic housings is provided with a series of positioning block heaves, and the inner side is provided with three forcipated slots. The slot is provided with an Omega-shaped rubber ring. The fastening strap is formed by an agraffe and a steel wire clip through the connection between a rivet and one end of a string; the center of the string is respectively provided with a positioning hole corresponding to the positioning block heaves of the ring-shaped plastic housing. The utility model has the advantages that: the structure is compact, the utility model can be assembled and disassembled at the enclosed cable conveniently without any tools.

Description

Open Type Electric Current Mutual Inductor

The utility model relates to instrument transformer, particularly a kind of Open Type Electric Current Mutual Inductor of easy loading and unloading.

Current transformer has various uses; mainly be the usefulness of monitoring, control or the protection of in alternating current circuit, making electric current; general all is to utilize the annular core of current transformer to be nested with on principal current cable or electric wire to use; and fixing of instrument transformer itself has dual mode substantially; first instrument transformer is fixed on other fixing article, and it two promptly is fixed on the cable, and using instrument transformer in a word will solve two problems; first is nested with on cable, and second will fix.But general current transformer does not also solve these two problems well, that is to say to use conveniently not enough that for example be nested with instrument transformer on mounted cable, then this instrument transformer must be an open type, even it is second has been nested with up, fixing also inconvenient.

The purpose of this utility model is to provide a kind of Open Type Electric Current Mutual Inductor, and its advantage is, need can not install and fix very easily by other any instruments, and the operation of dismounting transposing is also very simple.

The purpose of this utility model is achieved in that

A kind of Open Type Electric Current Mutual Inductor, two semi-round ring shape iron cores are filled out by epoxy resin mixed glue and are enclosed in two semi-round ring shape plastic housings, be tied with winding on the annular core, this winding is provided with lead-in wire and ground wire, it is characterized in that said two semi-round ring shape plastic housings with a packing belt harness, make two involutory looping magnetic circuits of semi-round ring shape iron core.

The said annular plastics shell outside is provided with a series of locating piece projectioies, be connected to form said packing belt by hasp, wire clip by an end of a rivet and a belt tensioner in addition, the other end of belt tensioner is provided with buckle, the centre of belt tensioner respectively with the corresponding location hole that is provided with of the locating piece of annular plastics shell projection.

The inside circumference of said annular plastics shell is distributed with three jaw type slots symmetrically, plugs a Ω type elastic tape in this slot.

The utility model is described in further detail below in conjunction with embodiment and accompanying drawing thereof.

Fig. 1 is the utility model Open Type Electric Current Mutual Inductor embodiment schematic top plan view.

Fig. 2 be Fig. 1 Open Type Electric Current Mutual Inductor partly cut open schematic diagram.

Fig. 3 is the utility model belt tensioner 8 schematic top plan view.

Fig. 4 is the cross-sectional schematic of the utility model belt tensioner 8.

Fig. 5 is the utility model wire clip 10 schematic diagrames.

Fig. 6 is the utility model hasp 9 schematic diagrames.

Among the figure:

1---

housing

11,12,13,14,15,16,17,18,19---location hole

2---be tied with iron core 3-epoxy resin mixture of winding

4---lead-in wire 5---jaw type slot 6---Ω type rubber rings

7---packing belt 8---belt tensioner 81---buckles

82,83,84,85,86,87,88---location hole 89---rivet hole

9---hasp 10---wire clip

See also Fig. 1---Fig. 6, the formation of a kind of Open Type Electric Current Mutual Inductor of the utility model, mainly be that two semi-round ring shape iron cores (2) are filled out by epoxy resin mixed glue (3) and are enclosed in two semi-round ring shape plastic housings 1, be tied with winding (not drawing among the figure) on the annular core 2, winding is provided with one 4 of lead-in wire two and ground wire, one packing belt 7 gets up two semi-round ring shape plastic housing 1 harnesses, and two halves annular iron core 2 is involutory constitute a toroid.

In order to guarantee that annular core 2 is involutory very accurately, be provided with a series of locating piece projectioies 11 among the utility model embodiment in the outside of

annular plastics shell

1,12,13,14,15,16,17,18,19, in addition by hasp 9, wire clip 10 is connected to form a packing belt 7 by an end of a rivet and a belt tensioner 8, the other end of belt tensioner 8 is provided with buckle 81, the centre of this belt tensioner 8 respectively with the locating piece projection 11 of

annular plastics shell

1,12,13,14,15,16,17,18, the 19 corresponding location holes 82 that are provided with, 83,84,85,86,87,88, its corresponding relation is:

Projection	19、18	?17	?16	?15	?14、13	?12	?11
Projection	19、18	?17	?16	?15	?14、13	?12	?11	Location hole	82	?83	?84	?85	?86	?87	?88

Promptly

projection

19,13 and 18,14 is respectively the locating piece projection in the lower half circle annular plastics shell and the outside, upper semi-circle annular plastics shell edge, locating piece projection 19,18 is compressed in the location hole 82 when packing tightly annular plastics shell 1 with packing belt 7, and locating piece projection 13,14 also is compressed among the location hole 86, and makes annular core 2 accurately be combined to form toroid.When passing through electric current on the leader cable, form magnetic fluxs in the annular core 2, the winding that twines on the annular core 2 will have induced current output, with the information of acquisition current detecting, control.

The utility model Open Type Electric Current Mutual Inductor installs and fixes for convenience, the inboard of annular plastics shell 1 of the present utility model also is provided with three jaw type slots 5, circumference evenly distributes, in this jaw type slot 5, be inserted with a Ω shape rubber ring 6, because of this Ω shape rubber ring 6 has enough elasticity and compressive deformation, Open Type Electric Current Mutual Inductor can be fixed on the cable with different cross section.

The winding lead-out wire of the utility model Open Type Electric Current Mutual Inductor is the connector made from copper material and reliable antirust coat arranged, and an end of winding also and go out a lead that is used for ground connection and is connected to the wiring copperhead on the head, therefore uses more convenient.

In sum, the design feature of Open Type Electric Current Mutual Inductor of the present utility model is:

1. annular core is divided into two " C " type semicircular ring;

2. adopt packing belt 7 fastening;

3. be inserted with Ω shape rubber ring 6 in the inboard jaw type slot 5 of annular plastics shell.

The advantage that uses is:

1. on the cable of sealing, must not use any instrument, can random installing/dismounting.As long as the hasp 9 of packing belt 7 is cocked, make wire clip 10 break away from buckle 81, then the annular plastics shell unclamps into two, and it is enclosed within on the cable, makes wire clip 10 tangle buckle 81 again, and fastening hasp 9 is with regard to installation, then detachable, very convenient on the contrary.

2. the cable applicable to different cross section wears fixing.

Claims

1. Open Type Electric Current Mutual Inductor, two semi-round ring shape iron cores (2) are filled out by epoxy resin mixed glue (3) and are enclosed in two semi-round ring shape plastic housings (1), annular core is tied with winding on (2), this winding is provided with lead-in wire and ground wire (4), it is characterized in that said two semi-round ring shape plastic housings (1) with a packing belt (7) harness, make the involutory looping magnetic circuit of two halves annular iron core (2).

2. Open Type Electric Current Mutual Inductor according to claim 1, it is characterized in that said annular plastics shell (1) outside is provided with a series of locating piece projectioies (11,12,13,14,15,16,17,18,19), in addition by hasp (9), wire clip (10) is connected to form said packing belt (7) by an end of a rivet and a belt tensioner (8), the other end of belt tensioner (8) is provided with buckle (81), the centre of belt tensioner (8) respectively with the locating piece projection (11 of annular plastics shell (1), 12,13,14,15,16,17,18,19) the corresponding location hole (82 that is provided with, 83,84,85,86,87,88).

3. Open Type Electric Current Mutual Inductor according to claim 1 and 2 is characterized in that the inside circumference of said annular plastics shell (1) is distributed with three jaw type slots (5) symmetrically, plugs a Ω type rubber ring (6) in this slot (5).