I.S. HD 528 S2:1999
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
A METHOD OF TEMPERATURE-RISE ASSESSMENT BY EXTRAPOLATION FOR PARTIALLY TYPE-TESTED ASSEMBLIES (PTTA) OF LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR
Hardcopy , PDF
01-04-2007
English
01-01-1999
Applies to enclosed PTTA or partitioned sections of PTTA without forced ventilation. Intended to determine the temperature rise of the air inside the enclosure.
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