GB 6450-1986
Replaced
GB/Z 20840.100-2023
Active
National standards
GB/Z 20840.100-2023 Instrument transformers—Part 100:Guidance for application of current transformers in power system protection
GB/Z 20840.100-2023 Instrument transformers—Part 100:Guidance for application of current transformers in power system protection
Price:
$ 216
Basic Information
Standard Code:
GB/Z 20840.100-2023
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Transformer
ICS Name:
Transformers, reactors, and inductors
Publish Date:
2023-12-28
Implement Date:
2024-07-01
Pages:
102 pages
Scope
This document provides advanced information for understanding the definition and requirements of electromagnetic current transformers (CTs), with the aim of providing general users or experts with information to help relay protection device manufacturers, current transformer manufacturers, and project engineers understand how current transformers respond to simplified or standardized short-circuit current signals. Where necessary, some abstract concepts are also discussed, and issues related to responsibilities in the design process of current transformers are addressed.
This document is applicable to protective electromagnetic current transformers that comply with the requirements of GB/T 20840.2.
Development Information
Referenced Standards
Adopt standards
IEC TR 61869-100:2017
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