FIELD: electricity.
SUBSTANCE: current lead section comprises insulation disposed in the conductive bus contacts on the ends of the ground plane, which covers the electrical insulation of the tire and the metal casing with an outside fire-retardant coating. Between the metal casing and the grounding screen flame retardant layer is located. It is made of composite material comprising a binder and filler intumescent, fire-resistant layer forming a void under temperature influence on the section. The thickness of the flame retardant layer is within 3.0-25 mm. The composite material contains as binder an epoxy resin, hardener and filler - intumescent graphite in a ratio, in weight %: 5-60 graphite, resin - the rest. Intumescent graphite is selected from a particle size of 0.5-0.8 mm.
EFFECT: increase of fire resistance section in conditions of excessive heat.
4 cl, 3 dwg
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|---|---|---|---|
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|
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| CURRENT DISTRIBUTOR | 2019 |
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