GB/T 7347-1987
Active
YD/T 4175-2022
Active
Industry standards-Postal and telecommunications
YD/T 4175-2022 The electrical safety technical requirements and testing methods for communication equipment powered by 240V/336V DC supply
YD/T 4175-2022 The electrical safety technical requirements and testing methods for communication equipment powered by 240V/336V DC supply
Price:
$ 30
Basic Information
Standard Code:
YD/T 4175-2022
Standard Type:
Industry standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Health, safety, and labor protection
ICS Name:
Integrated Information Technology (IT)
Publish Date:
2022-09-30
Implement Date:
2023-01-01
Scope
This document applies to communication station and data room applications where the input nominal voltage of the communication equipment and the power conversion devices inside the equipment is 240V/336V DC.
Development Information
Related Standards
GB/T 7348-1987
Replaced
GB/T 7348-1987 The standard spectrum of whispered Chinese speech
GB/T 5271.3-1987
Replaced
GB/T 5271.3-1987 Data processing—Vocabulary—Section 03:Equipment technology (selected terms)
GB/T 5271.5-1987
Replaced
GB/T 5271.5-1987 Data processing—Vocabulary—Section 05:Representation of data
GB/T 1526-1989
Active
GB/T 1526-1989 Information processing—Documentation symbols and conventions for data, program and system flowcharts, program network charts and system resources charts
GB/T 12118-1989
Active