IEC CEI EN 62271-200 Norm
Reclassification according to the class of partitions:
The class defines if for the separation of the active parts have been used metallic materials or insulating
PM: diaphragms and / or metal shutters
PI: One or more non-metallic diaphragms
PM class
equipment with a metal enclosure with aperture and / or shutter continuous metal (if applicable) intended to be placed on the ground between the compartments open and accessible and active parts of the main circuit
PI class
equipment with metal casing having one or more opening and / or non-metallic shutters between the compartments open and accessible and the active parts of the main circuit
