CN202307487U

CN202307487U - Indoor voltage transformer with fuse protection function

Info

Publication number: CN202307487U
Application number: CN2011203129393U
Authority: CN
Inventors: 滕元强; 马玉洁; 宁传仁; 张传城; 施晨沛; 李文东; 李鸿楠
Original assignee: DALIAN HUAXIA TAIKE ELECTRICAL GROUP Co Ltd
Current assignee: DALIAN HUAXIA TAIKE ELECTRICAL GROUP Co Ltd
Priority date: 2011-08-25
Filing date: 2011-08-25
Publication date: 2012-07-04
Anticipated expiration: 2021-08-25

Abstract

An indoor voltage transformer with a fuse protection function comprises a primary contact arm, a primary coil, a secondary coil, an iron core and a casing, wherein the primary contact arm is transversely arranged at the upper part of the casing; the rear part of the primary contact arm is connected with the casing; the primary contact arm and the casing adopt an integral structure formed by one-step epoxy resin casting; a fuse RD is arranged in the primary contact arm; a primary wiring terminal is mounted at the front end of the primary contact arm and connected with a front-end contact terminal of the fuse RD; the iron core is a ring-shaped iron core; the primary and the secondary coils are coaxially mounted on the stem of the iron core; the primary coil, the secondary coil and the iron core are formed in an epoxy resin pouring body through one-step casting; the epoxy resin pouring body is the casing; and one end of the primary coil is electrically connected with a rear-end contact terminal of the fuse RD. The indoor voltage transformer has a small size, is convenient to mount, and is provided with a built-in primary fuse, thereby preventing the transformer from being damaged by overvoltage and short circuits, and the built-in primary fuse is convenient to replace and easy to maintain.

Description

A kind of indoor type has the voltage transformer of fuse protection

Technical field

The utility model relates to a kind of voltage transformer, specifically is a kind of voltage transformer with fuse protection.

Background technology

Traditional indoor voltage transformer does not have built-in fuse protection; Adopt two single-phase potential transformers to combine mostly; The obvious floor space of such combination is huge, the equipment of use just many (getting external fuse protection), and the investment funds are more; Maintenance on ordinary days is also big, and operation cost is just high naturally.

To the problem of above-mentioned existence, the professional person takes measures to solve this fundamental issue by every means.Yet in the whole bag of tricks on probation, exist shortcoming and problem separately, such as scheme is complicated, the components and parts of use are more; Cause virtually installation, the operation all comparatively bothersome; Cost is also high naturally, weighs the advantages and disadvantages, and these methods on probation do not suit in practical power systems, to promote the use of.

The utility model content

The purpose of the utility model is to adopt two single-phase potential transformers to combine mostly to present voltage transformer; Cause the occupation of land space big; Problems such as trouble are installed, thereby provide a kind of anti overvoltage ability indoor type strong, easy to install to have the voltage transformer of fuse protection.

The technical scheme that adopts is:

A kind of indoor type has the voltage transformer of fuse protection, comprises contact arm, primary winding, secondary coil, iron core and housing one time.

A contact arm is horizontally installed on the top of housing, and the rear portion of a contact arm is connected with housing, and contact arm and housing are the overall structure by the epoxy resin one-time cast-forming.

In a contact arm, be equiped with fuse RD, be equiped with the primary connection terminal at the front end of a contact arm, the primary connection terminal is connected with the front end contact of fuse RD.

Iron core is an annular core, and the primary winding winding is on skeleton, and primary winding and secondary coil correspond respectively to nexine and skin, and on the coaxial stem stem that is installed in iron core;

Primary winding, secondary coil and iron core once-cast are in epoxy resin poured body, and epoxy resin poured body is housing;

One end of primary winding is electrically connected with the rear end contact of fuse RD, the two ends lead-out wire of secondary coil be located at housing on secondary coil binding post box in corresponding wiring terminal be connected.

The advantage of the utility model is:

Volume is little; Easy for installation, have built-in fuse protection, avoided causing the damage of instrument transformer because of overvoltage and short circuit; And a built-in fuse is convenient to change; Be easy to safeguard that the combination voltage instrument transformer of the utility model is excellent performance but also take up an area of for a short time not only, has realistic meaning to practicing thrift limited land resources.

The utility model stable performance, reliable, easy for installation, simple to operate, operation cost is low, suitable instrument transformer production industry and electric power maintenance use.

Description of drawings

Fig. 1 is the profile sketch map of the utility model.

Fig. 2 is the internal structure sketch map of the utility model.

Fig. 3 is that sketch map is looked on the left side of Fig. 2.

Embodiment

A kind of indoor type has the voltage transformer of fuse protection, comprises contact arm 7, primary winding 2, secondary coil 4, iron core 5 and housing 6 one time, it is characterized in that:

A contact arm 7 is horizontally installed on the top of housing 6, and the rear portion of a contact arm 7 is connected with housing 6, and one time contact arm 7 is the overall structure by the epoxy resin one-time cast-forming with housing 6.

In a contact arm 7, be equiped with fuse RD, be equiped with primary connection terminal 1 at the front end of a contact arm 7, primary connection terminal 1 is connected with the front end contact of fuse RD;

Iron core 5 is an annular core, and primary winding 2 windings are on skeleton 3, and primary winding 2 corresponds respectively to nexine and skin with secondary coil 4, and on the coaxial stem stem that is installed in iron core 5;

Primary winding 2, secondary coil 4 and iron core 5 one-time cast-formings are in epoxy resin poured body, and epoxy resin poured body is housing 6;

One end of primary winding 2 is electrically connected with the rear end contact of fuse RD, the two ends lead-out wire of secondary coil be located at housing 6 on secondary coil binding post box in corresponding wiring terminal be connected.

Claims

1. an indoor type has the voltage transformer that fuse is protected, and comprises a contact arm (7), primary winding (2), secondary coil (4), iron core (5) and housing (6), it is characterized in that:

A contact arm (7) is horizontally installed on the top of housing (6), and the rear portion of a contact arm (7) is connected with housing (6), and a contact arm (7) is the overall structure by the epoxy resin one-time cast-forming with housing (6);

In a contact arm (7), be equiped with fuse RD, be equiped with primary connection terminal (1) at the front end of a contact arm (7), primary connection terminal (1) is connected with the front end contact of fuse RD;

Iron core (5) is an annular core, and primary winding (2) winding is on a skeleton (3), and primary winding (2) and secondary coil (4) correspond respectively to nexine and skin, and on the coaxial stem stem that is installed in iron core (5);

Primary winding (2), secondary coil (4) and iron core (5) one-time cast-forming are in epoxy resin poured body, and epoxy resin poured body is housing (6);

One end of primary winding (2) is electrically connected with the rear end contact of fuse RD, the two ends lead-out wire of secondary coil be located at housing (6) on secondary coil binding post box in corresponding wiring terminal be connected.