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DC Power Supply

A DC-powered router has two load-sharing DC power supplies, located at the bottom rear of the chassis, as shown in Figure 3. For information about power supply redundancy and replaceability, see Power Supplies.

Figure 9 shows the power supply and Table 6 lists electrical specifications. For information about the LED and self-test button, see Power Supply LEDs and Self-test Button.

Figure 9: DC Power Supply

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Table 6: Electrical Specifications for DC Power Supply

Description	Specification
Maximum power output	700 W
DC input voltage	Nominal: –48 VDC, –60 VDC Operating range: –42.5 to –72 VDC
Input DC current rating	13.5 A @ –48 V
Output voltages	+1.5 V, +2.5 V, +3.3 V, +5.0 V, +12 V, +12 V

The DC power supplies are marked –48 VDC. This is the nominal voltage associated with the battery circuit. Any higher voltages are to be associated only with float voltages for the charging function.

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