CN2872565Y

CN2872565Y - Dry high-voltage current mutual inductor

Info

Publication number: CN2872565Y
Application number: CN 200520094292
Authority: CN
Inventors: 薛岩; 王纯山
Original assignee: LIANGJIN POWER SUPPLY CORP
Current assignee: LIANGJIN POWER SUPPLY CORP
Priority date: 2005-12-07
Filing date: 2005-12-07
Publication date: 2007-02-21
Anticipated expiration: 2015-12-07

Abstract

A dry type high-tension current transformer for measuring and protecting current in electric network with 220 KV or above comprises a conductor, an external insulation sheath, a secondary winding, a cabinet, a connecting terminal, a base frame, and a connecting plate, wherein the connecting end of the connecting terminal to the conduct are connected and mounted above the connecting plate, and the terminal board of the connecting terminal is at horizontal position after being mounted; a plurality of ring grooves or spiral type non-return grooves are disposed on the insulating layer covering the primary conduct or tubular rigid skeleton. The utility model has the advantages of easy operation, uniform stress, and high safety for overhead installation and operation, and can effectively prevent the insulating layer from sliding and falling off, so as to improve safety.

Description

Dry Type High Tension Current Transformer

Technical field

The utility model belongs to a kind of High-Voltage Electrical Appliances, a kind of Dry Type High Tension Current Transformer of current measurement and protection in particularly a kind of 220KV and the above electrical network.

Background technology

Existing high-tension current inductor, for external insulation in a kind of adopts the organic synthesis material, winding passes the endoporus of the tubulose rigid backbone that non-magnet_conductible material makes, the tubulose rigid backbone alternately holds insulating barrier outward, because primary insulation surrounds on the tubular structure, can cause the sliding screen of insulating barrier, come off, safety in utilization reduces; The terminals of binding post are at sidepiece in addition, and the wiring end plate is not a horizontal positioned, have angle after the wiring, and unbalance stress easily waves when wind is big, fractures, and influences useful life and safe operation.

The purpose of this utility model is, solves above-mentioned existing existing problem, provides a kind of insulation stability higher, the better Dry Type High Tension Current Transformer of fail safe.

The utility model is achieved in that and comprises conductor, external insulation sleeve, secondary winding, casing, binding post, base frame, the gusset piece formation that is linked and packed; Binding post is installed above gusset piece with the link of conductor and is connected, and the wiring end plate of binding post is in horizontal positioned after installing; Primary Conductor or tubulose rigid backbone hold the stop-return slot that the insulating barrier place is provided with several cannelures or thread-shaped outward.

Advantage of the present utility model is that binding post is installed above gusset piece with the link of conductor and is connected, and the wiring end plate of binding post is in horizontal positioned after installing; Connection is easy to operate, stressed even, safe to use during aerial work; Primary Conductor or tubulose rigid backbone hold the stop-return slot that the insulating barrier place is provided with several cannelures or thread-shaped outward.Can more effectively prevent the sliding screen of insulating barrier, come off that fail safe improves.

Description of drawings

Fig. 1 is a structure chart of the present utility model;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3, Fig. 4 are the structural representation of connecting plate;

Fig. 5 is the structural representation of tubulose rigid backbone inverted cone shape;

Fig. 6 holds the structural representation that the insulating barrier place is provided with stop-return slot for conductor;

Embodiment

Describe in detail below in conjunction with accompanying drawing: comprise conductor 3, external insulation sleeve 4, secondary winding 5, casing 6, binding post 2, base frame 7, gusset piece 1 formation that is linked and packed; Binding post 2 is installed above gusset piece 1 with the link of conductor 3 and is connected, and the wiring end plate of binding post 2 is in horizontal positioned after installing; Conductor 3 can be guide rod or be single or multiple conducting wires that when conductor 3 was guide rod, it held the stop-return slot 10 that the insulating barrier place is provided with several cannelures or thread-shaped; In order to increase mechanical strength, the tubulose rigid backbone 8 that the outside has several cannelures or thread-shaped stop-return slot 9 is installed at the insulating barrier place that holds of conductor 3; Tubulose rigid backbone 8 outsides are inverted cone shape.

Claims

1, a kind of Dry Type High Tension Current Transformer of current measurement and protection in a kind of 220KV and the above electrical network, comprise conductor, external insulation sleeve, secondary winding, casing, binding post, base frame, the gusset piece formation that is linked and packed, it is characterized in that, binding post is installed above gusset piece with the link of conductor and is connected, and the wiring end plate of binding post is in horizontal positioned after installing; Primary Conductor or tubulose rigid backbone hold the stop-return slot that the insulating barrier place is provided with several cannelures or thread-shaped outward.

According to a kind of Dry Type High Tension Current Transformer of current measurement and protection in said a kind of 220KV of claim 1 and the above electrical network, it is characterized in that 2, conductor or tubulose rigid backbone hold the insulating barrier place to be inverted cone shape and to have stop-return slot.