A method of temperature-rise assessment by extrapolation for partially type-tested assemblies (PTTA) of low-voltage switchgear and controlgear

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.

Verfahren zur Ermittlung der Erwärmung von partiell typgeprüften Niederspannungs-Schaltgerätekombinationen (PTSK) durch Extrapolation

Méthode de détermination par extrapolation des échauffements pour les ensembles d'appareillage à basse tension dérivés de séries (EDS)

A method of temperature-rise assessment by extrapolation for partially type-tested assemblies (PTTA) of low-voltage switchgear and controlgear (IEC 890:1987)

General Information

Status
Withdrawn
Publication Date
31-Jan-1998
Withdrawal Date
30-Jun-2003
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
01-Jul-2003
Due Date
01-Jul-2003
Completion Date
01-Jul-2003

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Standardization document
HD 528 S1:1998
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Standards Content (Sample)

SLOVENSKI STANDARD
SIST HD 528 S1:1998
01-februar-1998
A method of temperature-rise assessment by extrapolation for partially type-tested
assemblies (PTTA) of low-voltage switchgear and controlgear (IEC 890:1987)
A method of temperature-rise assessment by extrapolation for partially type-tested
assemblies (PTTA) of low-voltage switchgear and controlgear
Verfahren zur Ermittlung der Erwärmung von partiell typgeprüften Niederspannungs-
Schaltgerätekombinationen (PTSK) durch Extrapolation
Méthode de détermination par extrapolation des échauffements pour les ensembles
d'appareillage à basse tension dérivés de séries (EDS)
Ta slovenski standard je istoveten z: HD 528 S1:1989
ICS:
29.130.20 Nizkonapetostne stikalne in Low voltage switchgear and
krmilne naprave controlgear
SIST HD 528 S1:1998 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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