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Description / Abstract:
INTRODUCTION
This NEMA report on the thermal aging of industrial
thermosetting laminates is based on a test program carried out at
the NEMA Industrial Laminate Research and Development Facility at
the University of Delaware in cooperation with Underwriters'
Laboratories, Inc. (U/L) to determine the thermal classifications
or indices (general temperature ratings) of industrial laminate
sheets, rods and tubes (rolled and molded).
A basic objective of the program was to develop engineering
information which would assist the user in the selection of the
proper grade of thermosetting industrial laminate best suited for
use in electrical insulation systems and products which may operate
at higher than room temperatures. Heretofore, the design engineer
has not had such industry information available based on actual
tests.