GB 6450-1986
Replaced
T/UNP 639-2025
Active
Group standards
T/UNP 639-2025 Low-Noise High-Overload Energy Storage Charging Transformer
T/UNP 639-2025 Low-noise, high-overload energy-storage type charging transformer
Price:
$ 20.00
Basic Information
Standard Code:
T/UNP 639-2025
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
-
ICS Name:
Transformers, reactors, and inductors
Publish Date:
2025-04-30
Implement Date:
2025-04-30
Scope
Main technical content: This standard focuses on low-noise, high-overload energy storage charging transformers, and clearly states that it applies to products with a maximum voltage of 10kV and below, and a rated capacity of 315kVA to 6300kVA. It specifies the model identification rules, and in terms of technical requirements, it sets forth requirements for material structure, noise, shock and sound insulation, dustproofing, environment, electrical performance, etc. For example, using high magnetic conductivity materials for the iron core to reduce noise, and ensuring that the electrical performance meets energy efficiency level 1. The test methods cover material structure testing and performance inspection. Inspection is divided into factory inspection and type inspection, with clear determination rules. At the same time, it standardizes requirements for nameplates, markings, packaging, transportation, and storage, providing a comprehensive technical basis for the design, manufacture, operation, and maintenance of transformers.
Development Information
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