Inorganic-bonded mica mat for switch gear applications

In many areas of electrical equipment - generators, for example - the constant push toward greater performance levels has made necessary a frequent reappraisal of the materials available for design purposes. This is no less true in switchgear. In the case of arc barriers, the number of available materials has in the past been fairly limited to a group of organic-bonded laminates on the one hand and a small family of moldable inorganic systems on the other. Panels and auxiliary equipment have had a somewhat greater range, but are nevertheless equally pressured to keep an eye on any potentially useful developments. Among these may now be included in mica composition having the frequently-desirable anisotropy of a laminated structure combined with the superior thermal and life properties of a non-resin-based system.