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Database: 189759 (26 Oct 2025)
YB/T 4122.1-2021 English PDF
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YB/T 4122.1-2021
: (Microcomputer Relay Protection for Metallurgical Enterprises - Part 1: Operational Technology Management Procedure)
Status: Valid
YB/T 4122.1: Evolution and historical versions
Standard ID
Contents [version]
USD
STEP2
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Standard Title (Description)
Status
PDF
YB/T 4122.1-2021
English
239
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3 days [Need to translate]
(Microcomputer Relay Protection for Metallurgical Enterprises - Part 1: Operational Technology Management Procedure)
Valid
YB/T 4122.1-2021
YB/T 4122-2004
English
559
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3 days [Need to translate]
Management code of the operation and technology for the microprocessor-based relaying protection
Obsolete
YB/T 4122-2004
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YB/T 4891.5
YB/T 6230
YB/T 4122.2
Basic data
Standard ID
YB/T 4122.1-2021 (YB/T4122.1-2021)
Description (Translated English)
(Microcomputer Relay Protection for Metallurgical Enterprises - Part 1: Operational Technology Management Procedure)
Sector / Industry
Ferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard
H04
Classification of International Standard
77.180
Word Count Estimation
11,113
Date of Issue
2021-03-05
Date of Implementation
2021-07-01
Issuing agency(ies)
Ministry of Industry and Information Technology
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