DE7043318U - Short-circuit display device for insulators on electrical free and catenary lines - Google Patents

Description

German federal highway Bun-J esb ah n- Z e η t ral am % Minden (Westf)

Kurzachlu display device for insulators on electrical, free uno contact lines

The novelty relates to a short-circuit display device for "insulators" on electrical outdoor and overhead contact lines e in order to quickly identify one that has been claimed by a flashover Isolator.

The insulators built into the electrical overhead lines and overhead lines are caused by flashovers Lightning strikes in the overhead contact line, contamination from dust and levers or network-related switching hamlets, also at risk

# Experience has shown that -u is the time it takes to find one

i; 10 Insulator stressed by flashover relatively large · Often

ι if it is found light at all, since the flashovers often do not occur

;.: _; lei cause damage to the isolators. On the other hand, can

§ 'cause damage to the current path, which only becomes apparent after a long period of time

Impact time To achieve a low-maintenance price

15 and catenary is therefore a quick finder of rollover

• or short-circuit paths indispensable.

The task of novelty is “one possibility to

ir. create, the point of flashover from the ground (earth) from pacific

Ψ, to recognize

Today the solution to the problem is that the proposed Kurzechlußanzaigevorrichtung made of a two-part, roughly adapted to the insulator, shell made of heavy

Flammable foam is made, which in the operating state - here if it is placed on the insulating cap against the ground in the shells, which are held together from the outside with a wire, has a snap ring made of plastic. In the event of a flashover, the wire melts, the snap ring throws the more or less damaged and melted shell halves from which it is clearly visible that a flashover occurred on this insulator.

s Further details of the novelty emerge from the attached drawing, in which the subject matter of the invention is explained, for example. Here shows:

Pig. 1 shows the short-circuit display device in side view, Pig. 2 deagl. in view BB,
Pig. 3 the same in section AA and

Pig. ^ an example of an arrangement of the short-circuit indicator on the rod insulator.

You short-circuit display device consists of a two-part Sehale 1 made of flame-retardant foam, the inner dimensions are roughly matched to the cap of the isolator. The two shell halves 1 are placed over the cap of the insulator - see Pig. 4 - and held together with copper wire 3, with an in the shell 1 lying snap ring 2, consisting for example of non-foamed foam, the two halves after outside presses the ends of the copper wire are twisted together, and the end thus created with a length of about 2 to 3 cm in the direction of the tension-carrying cap

of the insulator is bent so that the short circuit is safely conducted over the copper wire and melts it
given a desired stability and size limitation for the device. If a flashover or short circuit occurs on the insulator, the copper wire melts and both halves of the shell are thrown off by the snap ring. In this way, even with slightly damaged shells or with damage that is difficult to see from below, the overlapping point is clearly visible from afar.

Claims (1)

Brief3 - ^ display device door insulators on electrical Overhead and contact lines, characterized in that they are made of a two-part shell (1) roughly adapted to the insulator, made of flame-retardant foam, which iia operating state - here it is placed on the insulating cap lying against the earth - one in the shells (1) that is old from the outside a wire (3) Susasaaen are held, lying snap ring (2).