INPUT OF SEALED FIBER-OPTIC CABLES WITH INTERNAL AND EXTERNAL SEALING UNITS THROUGH PROTECTIVE COVER Russian patent published in 2019 - IPC G02B6/00 H02G3/22 

FIELD: power engineering.

SUBSTANCE: invention relates to fiber-optic equipment used in electric power devices for transmission of electric control signals by means of fiber-optic cables in sealed systems with provision of fire resistance, seismic resistance and radiation protection. Insertion of sealed fiber-optic cables with internal and external sealing units through a protective shell comprises an internal sealing assembly formed by combining two sealing composite cages in the input by means of a central metal pipe of the input casing with a fiber-optic cable passing inside it, to protruding ends of internal metal cable pipe, hermetically reinforced composite input cages with fixation in end flanges installed in side metal pipes, hermetically connected on composite input frames with central metal pipe and mechanically connected to protective casing, inside of which on the side of "clean zone" there is a remote control nozzle with a leak testing pipe passing through additional biological protection to the internal unit of input sealing.

EFFECT: high reliability and high functionality of the developed input of sealed fiber-optic cables.

1 cl, 7 dwg