DCPower Source Requirements
l The AC receptacles should be a three-conductor grounding type and should be on
separate circuits.
l The AC receptacles should be easily accessible and should be located within a
reasonable distance, without requiring an extension cord.
l Each PSM should have its own dedicated branch circuit with suitable electric ratings
according to local safety standards. The circuit must be protected by a dedicated two-
pole circuit breaker and the circuit breaker should be properly rated.
l An on-off switch can be located between the AC receptacle and the PSM. Instead of a
dedicated on-off switch, the IEC 60320 appliance coupler may be considered the line
power disconnect.
l The AC wall attachment plug of the power cable should be a three-conductor grounding
type, must be electrically connected to the equipment grounding cable, and must be
approved for the use in the specific region or country.
Globally, electrical plugs and socket-outlets differ in voltage and current
rating, shape, size, and type of connectors. The types used in each
country are set by national standards, some of which are listed in the IEC
technical report TR 60083.
l Site wiring must include a ground connection to the AC power source.
l Power
l PSM-AC4
l General Electrical Safety Guidelines and Warnings
l AC Power Electrical Safety Guidelines and Warnings
l In Case of Electrical Accident
l AC Power Cable Specifications
DCPower Source Requirements
The DC-powered shelf operates at nominal –48 VDC (the positive conductor of the power
source is connected to ground).
Adhere to the following requirements and guidelines for the DCpower source:
l Isolated DC return (DC-I).
l Common DC return (DC-C).
l Two –48 V battery-based power supplies or AC/DC rectifiers, isolated from each other
(required for input power redundancy).
l One customer-supplied power distribution unit (PDU) per rack (required).
FSP3000 C Hardware Guide - R1.1 - Issue:A (12/09/2016) 151
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