FIELD: electricity.
SUBSTANCE: invention relates to vacuum arc-quenching chamber for medium voltage switching plant with one or several ceramic cylindrical tubular sections, closed with metal covers both on side of fixed contact and on side of switching contact, in which, at least one of covers inside and/or outside is equipped with insert, increasing overall thickness of external cover wall, or with external ring, accordingly inserted into cover or applied onto cover, at least partially with geometric closure. According to the invention, the insert dimensions are selected and inserted so that it leaves a small gap to support edge of ceramics so that in internal contact zone, in process of assembly, there might be a flanging of pressed element of central screen could be received.
EFFECT: improved resistance to external pressure.
17 cl, 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| VACUUM ARC-QUENCHING CHAMBER | 1996 |
|
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