JB/T 56267-1999
Quality grading of time-delay intermediate relay products (English Version)

Standard No.

JB/T 56267-1999

Language

Chinese, Available in English version

Release Date

1999

Published By

Professional Standard - Machinery

Status

Withdraw

Latest

JB/T 56267-1999

Scope

This standard specifies the quality grades, inspection methods and assessment procedures for the quality classification of time delay intermediate relays. This standard is applicable to the quality grade assessment and assessment basis for delay-type intermediate relays with delay characteristics used in power system relay protection and automatic control DC operating lines.

JB/T 56267-1999 history

• 1999 JB/T 56267-1999 Quality grading of time-delay intermediate relay products