Method of electrical arc flash protection

Details Method of electrical arc flash protection Method of electrical arc flash protection

2006-12-05

2006-12-05

Reichard, Dean A. (Department: 2831)

Electricity: conductors and insulators

Electric shock hazard protective devices

Shock protection, grounding devices

C174S0050SB

Reexamination Certificate

active

07145072

ABSTRACT:
A method of employing an electrical arc protective blanket to protect workers from electrical arc flashes. The blanket is composed of two or more layers where the layer closest to the electrical arc source is of a fiberglass material and the remainder of the layers are of fiberglass and/or a flame-retardant (FR) materials. The layers overlap so that the they can be attached around the entire perimeter. Preferred fiberglass fabrics are woven with a warp yarn break strength between about 0.7 and 1.5 times the fill yarn break strength. FR materials include FR cotton, para-aramids, and meta-aramids. A fastening structure is used to install the blanket for use. Contemplated fastening structures include straps with temporary fasteners around the blanket perimeter and eyelets. Optional integral handles facilitate carrying and installation.

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