GB 6450-1986
Replaced
GB/T 20840.99-2025
Active
National standards
GB/T 20840.99-2025 Instrument transformers—Part 99:Glossary
GB/T 20840.99-2025 Instrument transformers—Part 99:Glossary
Basic Information
Standard Code:
GB/T 20840.99-2025
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Transformer
ICS Name:
Transformers, reactors, and inductors
Publish Date:
2025-02-28
Implement Date:
2025-09-01
Pages:
60 pages
Scope
This document defines the specific terms and definitions of transformers.
This document applies to the field of transformers covered by GB/T 20840 (all parts). Unless otherwise specified, in this document, all periodic electrical quantities are considered to be the square root of the average value.
Development Information
Same series standard
Adopt standards
IEC 61869-99:2022
Related Standards
GB/T 7449-1987
Replaced
GB/T 7449-1987 Guide to the lightning impulse and switching impulse testing of power transformers and reactors
GB 13028-1991
Abolished
GB 13028-1991 Isolating transformers and safety isolating transformers Requirements
GB/T 14006-1992
Active
GB/T 14006-1992 Outline dimensions of transformers and inductors for use in telecommunication and electronic equipment—Part 1:Transformers and inductors using YEI-1 laminations
GB/T 14860-1993
Replaced
GB/T 14860-1993 Generic specification for transformers and inductors for use in telecommunication and electronic equipment
GB/T 15164-1994
Replaced