DE7044137U - Arc extinguishing chamber for low-voltage switchgear - Google Patents

Description

SISS3SSS ASTISEGSSSLLSCHAy? Erlangen, the 27th & ⁰ ^ ^ 7O

Berlin and Munich Werner-von-Sleisens-Str. 50

Our reference: YPA 70/3282 C-M Let

Delivered arch fire chamber for Uledersparmungsnetzwerkgeräte

The innovation cezleht aiii an arc extinguishing chamber for EleaerspannungsFChaltgeräte with the contact parts of the switching device electrically conductively connectable Sndlösehblechen one Loosening plate stacks and bridge compensation channels for the through Arc is dividing and dynamic pressure. With a known low- sparuruiCigs switchgear ralt arc extinguishing chamber mentioned above Art {DAS 1 185 269) are the contact arrangement parallel zuaj See image for the arc-flanking insulation panels in the Distance from the lateral chamber wall s arranged so that between the Sasaerv / andes and the insulating panels Druckausgleleb.ska233.le form. The arc guide plates are in this known Sehaltgeräteauszführung as end quenching plates with a Front side on a chamber wall, and with the four side surfaces at four further arc jcaasaerviränd-en adjacent to the Niese Kacsaerwand at. The pressure equalization channels provided here widen the switching device. On the other hand, the Isollerstoiiplatten to form the pressure compensation channels as additional Ropes are installed and attached.

An arc extinguishing chamber is to be created by the control Let a pressure equalization channel pass behind the arc. This makes it possible to reduce the amount of air that is around behind the lid, because with the new licensed arc extinguishing chamber, at least one side of the printout is more than good.

704413727.4.72 - 2 -

YPA 70/3282 GM

conductive material. A "better cooling of the air does, however also for better endionization of the switching point .. As an advantage for the dimensioning of the arc guide rail It has been found that the width of the arc guide rails is approximately half the width of the arc splitter. Here is it is advantageous if the width of the arc guide rail is approximately the same as the width of the contact parts. At least the arc guide rail has partially T-shaped cross-section, with the ΐ-stem with is connected to the chamber wall applied to the arc, this results in a simple attachment option for the Arc guide rail and, on the other hand, good stability for mechanical stresses as a result of the effects of the arcing In practice, however, the compensating effect is still fully sufficient, even with a continuous stem of the T.

Based on the drawing Averden exemplary embodiments according to The innovation is described and how it works is explained in more detail. Show it:

Pig. 1 is a schematic representation of a side view of the

modern arc chamber,

Pig. 2 shows a longitudinal section through the chamber according to Pig- ¹ , Pig. 3 shows a cross section through the Pig chamber. 1 and Pig. 4 a possible mounting form for the arc

guide rails in the lient arch chamber housing.

The same parts are given the same reference symbols in all Piguren Mistake.

That in Pig. 1 shown consists of low-voltage switchgear from the arc chamber 1 and the fixed contact part 2 and the housing part 4 holding the movable contact part 3. The fixed contact part 2 and the movable contact part 3 are connected with arc guide rails 5, the extinguishing Flank metal sheets 6 in the arc chamber 1. The arcs— Guide plates 5 are at a distance from the chamber wall en 7 "Etna 8, -κ-ie himself, from the Pig. 1 and 2 results, arranged, here-durcii arise for the one schematized by the arc 9j in FIG. is shown, resulting back pressure in the area of the erasure

704413727.4.72 -3-

· ■ - y - VPA 70/3282 GM

6 sheets of pressure equalization channels 10 between the "walls 7 and
the arc guide rails 5 *

In order to be able to hold the arc guide rails 5 not only at their ends, what a certain strength of the arc guide rails would mean, there is an advantageous form of mounting for the arc guide rails, as shown in Pig-4. The arc guide rails 5 have a stem 11, the housing 1 with the wall 7 of the comb it is verbimufri. Here it is advantageous if the stem 11 extends only over parts of the total length of the arc chamber 1, so that a Pressure equalization can take place from one chamber wall 3 to the other behind the arc guide rails 5.

4 protection claims
4 figures

Claims (4)

■ «■ • s ■ - 4 - "VPA 70/3232 SM _ Selftz spray H. Lieht lbogenlcsehkasmer for iviederspannungsschaltgeräte te with the contact Il of Sehaltgerätes conductive comparable bindfearen EndloscnOlechen ezi electrically, a Löseh / lamination stack and pressure ausglelctskanälen for the resulting by-arc back pressure, characterized in that _t that the Endlösclibleche as iia distance to all Lichfbogenkannaerwänaen ( 7, 8) extending arc guide rails (5) are formed. 2. Liehtbogeiilöschkainner according to claim 1, characterized in that the arc belt width carries about half of the ~ L ~ ö s chbl e chbre 11 e ib e - 3- Arc failure according to claim 1 or 2, characterized in that the width of the arc guide rail is approximately the width of the contact parts (2, 5). 4. Llchtbogenlöschkamaer according to one of the preceding claims, characterized in that the LIehtbogenleitschiene (5) zm at least -partially 9-shaped cross-section, wherein the T- stem (11) old is connected to the chamber wall facing away from the arc.