Standard No.:	YD/T 637-2006
English Name:	DC-DC Conversion Equiopment for Telecommunication
Chinese Name:	通信用直流—直流变换设备
Chinese Classification:	M41    Telecommunication power supply equipment
Professional Classification:	YD    Professional Standard - Telecommunication
ICS Classification:	29.2 29.2    Rectifiers. Converters. Stabilized power supply 29.2
Source Content Issued by:	Ministry of Information Industry
Issued on:	2006-5-31
Implemented on:	2006-10-1
Status:	abolished
Superseded by:	YD/T 637-2024 DC-DC conversion equipment for telecommunication
Superseded on:	2025-4-1
Abolished on:	2025-04-01
Superseding:	YD/T 637-1993 DC-DC Conversion Equiopment for Telecommunication
Target Language:	English
File Format:	PDF
Word Count:	6000 words
Translation Price(USD):	150.0
Delivery:	via email in 1 business day

This standard specifies the composition, classification, requirements, test methods, inspection rules as well as marking, packing, transportation and storage of DC-DC conversion equipment for communication. This standard is applicable to the DC-DC conversion equipment supplying power to communication equipment (hereinafter referred to as "conversion equipment"). Input voltage of this kind of equipment is DC 48V (or 24V), output voltage may be DC 24V (or 48V), etc. This standard is not applicable to module type DC-DC switching power supply equipment, DC remote supply power supply equipment, DC-DC power supply equipment placed in communication equipment.

Foreword I 1 Scope 2 Normative References 3 Product Model and Series 4 Requirements 5 Test Methods 6 Inspection Rules 7 Marking, Packing, Transportation and Storage