SEALED CABLE PASSAGE OF SEALED ENTRY Russian patent published in 2013 - IPC H02G3/22 

FIELD: electrical engineering.

SUBSTANCE: sealed cable passage consists of the passage cylindrical steel with butt-end passage flanges with holes, single- double- or multiple-core cables in mineral insulation with metal shell and a biological protection; fixed in the passage body, coaxial to the flanges holes, are guide tubes with sealed multi-cable modules installed therein, attached in the passage flanges holes with threaded nuts and sealing metal gaskets made of soft metal, consisting of the module cylindrical body with notches at the spots of contact with the gaskets, the module butt-end flanges with holes wherethrough cables are passed the metal shell whereof is permanently connected to the module butt-end flanges surface and an end of the ceramic-metal insulator, the other end of the insulator permanently connected to the cable conductor.

EFFECT: creation of a repairable sealed cable passage, ensuring the structure radiation, thermal and fire resistance.

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