FIELD: electrical engineering.
SUBSTANCE: proposed method for producing polymeric case of vacuum circuit breaker includes installation of vacuum chamber in mold, locking of the latter, and chamber sealing followed by filling space between chamber and mold with liquid insulator. In the course of molding, prior to filling chamber-to-mold space with liquid insulator, external surface of chamber is covered with flexible shock-absorbing silicon rubber, epoxy compound being used as liquid insulator. Epoxy compound has following composition, parts by mass: epoxy resin, 100; filler, 360; hardener, 85; promoter, 1. Polymeric case is molded at mold temperature of 140 - 145 °C and pole molding time of 27-35 minutes, followed by hardening for 12 h at 140 °C.
EFFECT: facilitated procedure, reduced cost.
3 cl, 3 dwg
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