FIELD: electricity.
SUBSTANCE: coupling comprises a tubular metal housing with an external flame-retardant coating, comprising electrically insulated carrier pipe with a cavity under the mating contacts current lead tires. The carrier tube is made of paper impregnated with a binder, attached thereto and covering it from the outside ground plane, which is located in the metal casing. Closing the end flanges of the housing are locate within the housing. Each of the flanges has an opening therein for securing the tire current conductor, and each cover flange is made of nonmagnetic metal. Between the casing and the earth-screen composite is flame retardant layer made of intumescent filler upon heating, the impregnated binder when forming voids in the flame-retardant Swelling layer.
EFFECT: increase of fire resistance.
7 cl, 3 dwg
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