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DC Power Supply Electrical Specifications

Each DC power supply has a single DC input (–48 VDC and return) that requires a dedicated 40 A (–48 VDC) circuit breaker. Table 2 lists the DC power supply electrical specifications.

Table 2: DC Power Supply Electrical Specifications

Parameter

Specification

Maximum output power

850 W

DC input voltage

–40.5 to –72 VDC

DC input current rating

22.2 A @–48 V

For information about connecting the power supply to DC power, see Connecting Power to a DC-Powered Services Gateway.

Each DC power supply faceplate displays a single LED to indicate the status of the power supply (see Table 3).

Table 3: DC Power Supply LED

Color

LED Status

Indicated Condition

Green

On steadily

+3V3SB is ON, +12 VOUT is ON

Blinking

+3V3SB is ON; +12 VOUT is OFF; DC is present

Red

On steadily

FAN_FAULT, OTP, 3V3 OCP/UVP

Blinking

+12 V_OCP, +12 V_UVP, +12 V OVP


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