International Electrotechnical Commission

ENfunctional insulation (FI) 
insulation that is necessary only for the correct operation of the equipment

NOTE Functional insulation by definition does not protect against electric shock. It may, however, reduce the likelihood of ignition and fire.

TC/SC:82Terms     Info     Publications
Published in:IEC 62109-1, ed. 1.0 (2010-04) Terms     Info
Reference number:3.29

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