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M320 DC Power Electrical Specifications

 

DC Power System Electrical Specifications

Table 1 lists the DC power system electrical specifications.

Table 1: DC Power System Electrical Specifications

Item

Specification

DC input voltage

Operating range: –40.0 to –72.0 VDC

Note: If the input voltage from the DC power source drops between –37.5 and –39.5 VDC, the router automatically shuts down. During automatic shutdown, the circuit remains active. When the input voltage returns to –43 to –44 VDC, the router automatically starts up again and the system returns to normal operation within 30 minutes. No operator intervention is required.

DC system current rating

65 A @ –48 VDC (nominal) (3120 W)

Note

To allow for future growth so that you can operate the router in any hardware configuration without upgrading the power infrastructure, we recommend that you provision at least 48 A @ –48 VDC (nominal) for each power supply. To base the amount of power you provision on the typical power consumption @ –48 VDC (nominal) for your current hardware configuration, you can use the information in M320 Power Requirements.

Nonisolated DC Power Supply Electrical Specifications

Table 2 list the electrical specifications for nonisolated DC power supplies.

Table 2: Nonisolated DC Power Supply Electrical Specifications

Item

Specification

Maximum output power

2000 W

DC input voltage

Nominal: –48 VDC, –60 VDC

Operating range: –40.5 to –72 VDC

Note: If the input voltage from the DC power source drops below –40.5 VDC, the router automatically shuts down. During automatic shutdown, the circuit remains active. When the input voltage returns to –42.75 VDC, the router automatically starts up again and the system returns to normal operation within 30 minutes. No operator intervention is required.

DC input current rating

42 A @ –48 VDC

Internal Supplementary Protector

50 A

Isolated DC Power Supply Electrical Specifications

Table 3 list the electrical specifications for isolated DC power supplies.

Table 3: Isolated DC Power Supply Electrical Specifications

Item

Specification

Maximum output power

2000 W

DC input voltage

Nominal: –48 VDC, –60 VDC

Operating range: –40.0 to –72.0 VDC

Note: If the input voltage from the DC power source drops between –37.5 and –39.5 VDC, the router automatically shuts down. During automatic shutdown, the circuit remains active. When the input voltage returns to –43 to –44 VDC, the router automatically starts up again and the system returns to normal operation within 30 minutes. No operator intervention is required.

DC input current rating

48 A @ –48 VDC

Internal Supplementary Protector

60 A