CN201522510U

CN201522510U - Foldable combined turn changing device of alternating current path

Info

Publication number: CN201522510U
Application number: CN200920188939XU
Authority: CN
Inventors: 熊启新; 白日昶; 毛鹏; 胥竞华; 孙其寿; 张承学; 胡志坚; 段志远; 严国志; 万宇; 帅玲玲; 何萍
Original assignee: JIANGXI PROVINCE ELECTRIC POWER Corp SUPERVOLTAGE BRANCH
Current assignee: JIANGXI PROVINCE ELECTRIC POWER Corp SUPERVOLTAGE BRANCH
Priority date: 2009-10-28
Filing date: 2009-10-28
Publication date: 2010-07-07
Anticipated expiration: 2019-10-28

Abstract

The utility model discloses a foldable combined turn changing device of an alternating current path, which comprises an upper folding part, a middle folding part and a lower folding part, each of the folding parts is provided with a hole in the middle and turns, the turns of the three folding parts are serially connected mutually, the upper folding part is connected with the middle folding part via a soft insulating conducting wire, the middle folding part is connected with the lower folding part via a soft insulating conducting wire, and two soft insulating conducting wires with joints are led from the middle folding part, thereby forming series turns. The series turns are fixed on a standard current terminal strip via joints so as to form the current path. The folding parts are clamped by tong heads of a tong-type current instrument or tong-type current sensor to be measured. The upper folding part, the middle folding part and the lower folding part form a Z-shaped combination. After being connected to a current circuit, the three folding parts of the foldable combined turn changing device are designed into six different turn combinations on line, thereby meeting measurement precision requirements of measurements of tong-type current instruments or tong-type current sensor to wide-ranged tested current and having no need to replace to measure the tong-type current instrument or tong-type current sensor.

Description

The collapsible combination of alternating current path becomes the circle device

Technical field

The utility model relates to a kind of collapsible combination change of alternating current path circle device that seals in the alternating circuit, supplies jaw type current instrument or jaw type current sensor measurement.

Background technology

AC electric power systems is converted to the secondary side current of 1 ampere of ratings or 5 amperes by high-tension current inductor with primary side current, inserts terminal row, for protective device, measuring apparatus and measurement mechanism use.In power test, often need measure, all use portable jaw type current instrument or sensor usually loop current.Because system power can be in wide variation very, can not satisfy the requirement of measuring accuracy and measuring error when the little electric current with the measurement mechanism of the jaw type current instrument of determining current rating or jaw type current sensor.In tested current return, seal in wire turn and can onlinely be combined into suitable ampere turns, then can make jaw type current instrument or jaw type current sensor when little electric current, also can obtain high measurement accuracy, measure tong-type ammeter or jaw type current sensor and need not transposing.

Summary of the invention

The purpose of this utility model is: provide the collapsible combination of a kind of alternating current path to become the circle device, during incoming transport is gone the same way, can onlinely be combined into six kinds of numbers of turn, make jaw type current instrument or jaw type current sensor be fit to and satisfy the requirement of measuring accuracy the measurement of the tested electric current of wide region.

The technical scheme that the utility model provides is: the last overlapping piece of wire turn, middle overlapping piece, the following overlapping piece of being placed with holes in the middle of comprising, wire turn in three overlapping pieces is connected mutually, connect by soft insulated conductor between last overlapping piece and middle overlapping piece, middle overlapping piece and following overlapping piece, connect by the soft insulated conductor of middle overlapping piece belt lacing and draw.Be fixed on the normalized current terminal row by joint, form current path.The binding clip of electric current jaw type instrument or electric current clamp sensor is clamped overlapping piece and is measured.

Upward overlapping piece described in the utility model, middle overlapping piece, overlapping piece formation Z type combination down.

Wire turn mutual insulating in the overlapping piece described in the utility model.

The joint of soft insulated conductor described in the utility model is made up of the pad and the insulation knob of screw rod, sleeve, connection lead, in the convenient groove that inserts on the current terminal row.

Three overlapping pieces described in the utility model are formed by insulating material, are fixed in Z type mode by metal hinge between overlapping piece, and overlapping piece is connected by two soft insulated conductors between any two, and two current paths folded or that the triple-lap wire turn constitutes are positive ampere-turn sum.

In three overlapping pieces described in the utility model respectively with determine around to the insulation groups of turns and connect mutually, whole wire turn is drawn two soft insulated conductors by middle part and is formed current path.

Three overlapping pieces of upper, middle and lower described in the utility model circle that winds the line respectively is A, B, C, and with A, B, the series connection of C wire turn, the end of a thread and line tail prolong by insulating soft wire at middle overlapping piece by insulating soft wire, forms A, B, C, A+B, six kinds of numbers of turn combinations of B+C, A+B+C.

The utility model is owing to adopt said structure, after inserting current return, become six kinds of combinations of different wire turns by three overlapping piece on-line setups, the measurement mechanism that adapts to jaw type current instrument or jaw type current sensor satisfies the requirement of measuring accuracy to the tested electric current of wide region, measures tong-type ammeter or jaw type current sensor and need not transposing.

Description of drawings

Fig. 1, structural principle synoptic diagram of the present utility model;

Fig. 2, overlapping piece folding direction synoptic diagram of the present utility model (90 ° of design sketchs overturn);

Fig. 3, complete folding synoptic diagram of the present utility model;

Fig. 4, middle overlapping piece front elevation of the present utility model;

Fig. 5, middle overlapping piece side view of the present utility model;

Fig. 6, middle overlapping piece top view of the present utility model;

Fig. 7, of the present utility model prolonging conductor terminal joiner structure figure;

Embodiment

Below in conjunction with accompanying drawing the utility model is further specified.

Referring to Fig. 1, the utility model comprises overlapping piece 1, middle overlapping piece 2, following overlapping piece 3, metal hinge 5 and 7, goes up overlapping piece winding 8 (number of wire turns A), middle overlapping piece winding 6 (number of wire turns B), following overlapping piece winding 4 (number of wire turns C),

extension line

9 and 10,

pinout connector

11 and 12.

With holes in the middle of the above-mentioned upper, middle and lower overlapping

piece

1,2,3, its wire turn is an insulated conductor, and around to by the trend of marking, the winding in the upper, middle and lower overlapping piece is respectively A, B, C circle.The winding line links to each other for short insulating soft wire between last overlapping piece and middle overlapping piece, middle overlapping piece and following overlapping piece, and its length is fit to fold.Three overlapping pieces are with insulating material notes type.

The folding direction synoptic diagram of last overlapping piece 1 that it is benchmark that Fig. 2 represents with middle overlapping piece 2 and following overlapping piece 3, two hinges have determined folding direction and relative position, folding maximum angle is 180 °.This chart is understood the vision spatial structure shape of each folded piece.

Fig. 3 is complete folding figure, and the wire turn of formation is A+B+C, and this figure has showed whole vision spatial structure shape.

Fig. 4,5,6 is for the middle overlapping piece in the utility model that is fit to a kind of current clamp dop is faced, side-looking and top view and relative dimensions.

Fig. 7 prolongs the terminal and connector structural drawing that lead among Fig. 1, and metal screw 15 lower end diameter are slightly larger than upper end diameter, end portion length threaded 18.Metal screw is inserted in band line ear metallic gasket 17 (the threaded lower end diameter of external diameter, internal diameter is slightly larger than the upper end snail shank diameter) and puts insulation at last and annotate part knob 13 from the upper end, be locked in top on the metal screw by Screw 14.When the knob cap is insulated in clockwise operation, metal sleeve, metallic gasket are firmly connected with current terminal row water conservancy diversion metal device, form current path.

Installation application process of the present utility model is as follows: high-tension current inductor secondary side current loop has entered current terminal row, the utility model needs to go into this current return via current terminal row serial connection, for jaw type current instrument or this loop current of jaw type current sensor measurement.At first current terminal is arranged the short circuit slide block and be adjusted to location of short circuit, the utility model two is prolonged outlet insert corresponding current terminal row's two-port and locking by current polarity respectively, again current terminal is arranged the short circuit slide block and be adjusted to the open-circuit position, finished that promptly the utility model is connected in series into current return.Select suitable wire turn combination, snap in current clamp and measure, make electric current split-core type meter meter or electric current jaw type working sensor in the high precision scope.

Ultimate principle of the present utility model, principal character and advantage have more than been described.Under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications; all in the scope of the utility model technical protection, the claimed scope of the utility model is defined by appending claims and equivalent thereof these changes and improvements.

Claims

1. the collapsible combination of alternating current path becomes the circle device, it is characterized in that: the last overlapping piece of wire turn, middle overlapping piece, the following overlapping piece of being placed with holes in the middle of comprising, wire turn in three overlapping pieces is connected mutually, respectively connect by two soft insulated conductors between last overlapping piece and middle overlapping piece, middle overlapping piece and following overlapping piece, therefrom two of the overlapping piece belt lacing soft insulated conductors connect and draw.

2. the collapsible combination of alternating current path according to claim 1 becomes the circle device, it is characterized in that: go up overlapping piece, middle overlapping piece, overlapping piece formation Z type combination down.

3. the collapsible combination of alternating current path according to claim 1 becomes the circle device, it is characterized in that: the wire turn mutual insulating in the overlapping piece.

4. the collapsible combination of alternating current path according to claim 1 becomes the circle device, it is characterized in that: the joint of the soft insulated conductor in wire turn outlet termination is made up of the pad and the insulation knob of screw rod, sleeve, connection lead.

5. become the circle device according to claim 1 or the collapsible combination of 2 or 3 or 4 described alternating current paths, it is characterized in that: three overlapping pieces are formed by insulating material, fix in Z type mode by metal hinge between overlapping piece, overlapping piece is connected by two soft insulated conductors between any two, and two current paths folded or that the triple-lap wire turn constitutes are positive ampere-turn sum.

6. become the circle device according to claim 1 or the collapsible combination of 2 or 3 or 4 described alternating current paths, it is characterized in that: in three overlapping pieces respectively with determine around to the insulation wire turn form and connect mutually, whole wire turn is drawn two soft insulated conductors by middle overlapping piece and is formed current path.

7. become the circle device according to claim 1 or the collapsible combination of 2 or 3 or 4 described alternating current paths, it is characterized in that: three overlapping pieces of upper, middle and lower circle that winds the line respectively is (A), (B), (C), by insulating soft wire (A), (B), (C) wire turn are connected, the end of a thread and line tail prolong by insulating soft wire at middle overlapping piece, form (A), (B), (C), (A+B), (B+C), (A+B+C) six kinds of number of turn combinations.