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.
