GB/T 24276-2009
A method of temperature-rise assessment by extrapolation for partially type-tested assemblies(PTTA) of low-voltage switchgear and controlgear (English Version)

Standard No.

GB/T 24276-2009

Language

Chinese, Available in English version

Release Date

2009

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2018-05

Replace By

GB/T 24276-2017

Latest

GB/T 24276-2017

Scope

This standard specifies an extrapolation method for determining the temperature rise of low-voltage switchgear and controlgear assemblies (PTTA) for partial type testing. This standard applies to closed part type tested low-voltage switchgear and controlgear assemblies (PTTA) or compartmentalized rack units of PTTA without forced ventilation.

GB/T 24276-2009 Referenced Document

• GB 14048.1 Low-voltage switchgear and controlgear.Part 1:General rules*， 2012-12-31 Update
• GB 7251.1-2005 Low-voltage switchgear and controlgear assemblies-Part 1:Type-tested and partially type-tested assemblies

GB/T 24276-2009 history

• 2017 GB/T 24276-2017 A method of temperature-rise verification of low-voltage switchgear and controlgear assemblies by calculation
• 2009 GB/T 24276-2009 A method of temperature-rise assessment by extrapolation for partially type-tested assemblies(PTTA) of low-voltage switchgear and controlgear