Technical Documentation
Related Documentation
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 |
