Electrical insulation. Thermal evaluation and designation1 Scope This International Standard now distinguishes between thermal classes for electrical insulation systems and electrical insulating materials. It establishes the criteria for evaluating the thermal endurance of either electrical insulating materials (EIM) or electrical insulation systems (EIS). It also establishes the procedure for assigning thermal classes. This standard is applicable where the thermal factor is the dominant ageing factor. NOTE

BS EN 4048 specifies the characteristics

BS EN 13652 is a standard that serves technical specifications for the extraction of water soluble nutrients and elements in soil improvers and growing media

The tests are designed to be applied to a free-standing bed that is fully assembled and ready for use

This European Standard provides guidance on the best practice for establishing and implementing a suitable respiratory protective device programme

It gives methods of test for the evaluation of the properties of cisterns and covers made by any of the processes currently available

— transport infrastructures (road and motorways

the term “domestic purposes” includes use in hotels

This European Standard supersedes BS 2654:1989 which is withdrawn

Note 2: Symbols relating to process controls can be obtained from BS 1646-1

this compatibility takes the form of interchangeability

Steel products manufacturers

such as a door (either open or closed) or other similarly restricted openings