99.60 Withdrawal effective Dec 1, 1997
CENELEC
CLC/TC 17D Low-voltage switchgear and controlgear assemblies
Harmonization Document
The following method is applicable to enclosed PTTA or partitioned sections of PTTA without forced ventilation. Notes 1. - The influence of the materials and wall thicknesses usually used for enclosures are negligible on the steady state temperatures. The method is therefore applicable to enclosures made of sheet steel, sheet aluminium, cast iron, insulating material and the liken 2. - For open-type and dead-front PTTA, no temperature-rise assessment is needed if it is obvious that no excessive air temperatures are likely to arise.
Legislation related to this standard
Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
Harmonized/Supporting
WITHDRAWN
HD 528 S1:1989
99.60
Withdrawal effective
Dec 1, 1997
WITHDRAWN
HD 528 S2:1997
