DS/CLC/TR 60890:2004
A method of temperature-rise assessment by extrapolation for partially type-tested assemblies (PTTA) of low-voltage switchgear and controlgear

Standard No.

DS/CLC/TR 60890:2004

Release Date

2004

Published By

Danish Standards Foundation

Latest

DS/CLC/TR 60890:2004

Replace

DS/HD 528 S2-1997

Scope

The following method is applicable to enclosed PTTA or partitioned sections of PTTA without forced ventilation. Note 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 mad of sheet steel, sheet aluminium, cast iron, insulating material and the like. Note 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 rise.

DS/CLC/TR 60890:2004 history

• 2004 DS/CLC/TR 60890:2004 A method of temperature-rise assessment by extrapolation for partially type-tested assemblies (PTTA) of low-voltage switchgear and controlgear