Juniper M120 - Table 51: AC Power Supply Electrical Specifications; Table 52: DC Power Supply Electrical Specifications; Table 53: Component Power Requirements

Table 50: Power System Electrical Specifications (continued)
SpecificationItem
Operating range: –40.0 to –72 VDC
NOTE: If the input voltage from the DC power source drops below
-37.5 to -39.5 VDC, the router automatically shuts down. During
automatic shutdown, the circuit remains active. When the input
voltage returns to –43.0 to –44.00 VDC, the router automatically
starts up again and the system returns to normal operation within
30 minutes. No operator intervention is required.
DC input voltage
48 A @ –48 VDC (nominal)DC system current rating
(per power supply)
Table 51: AC Power Supply Electrical Specifications
SpecificationItem
2100 WMaximum output power
Operating range: 100 to 240 VAC (nominal)AC input voltage
47 to 63 HzAC input line frequency
28 A @ 100 VAC (15 A top inlet, 13 A bottom inlet)
14 A @ 240 VAC
AC input current rating
Table 52: DC Power Supply Electrical Specifications
SpecificationItem
2100 WMaximum output power
Nominal: –48 VDC, –60 VDC
Operating range: –40.0 to –72 VDC
DC input voltage
60 A @ –48 VDCDC input current rating
60 AInternal Supplementary
Protector
Table 53: Component Power Requirements
DC Current
Requirement
(Amps @
–48 VDC)
DC Power
Requirement
(Watts)Component
3.90 A187 WCooling system (normal speed)
89Copyright © 2018, Juniper Networks, Inc.
Chapter 9: Preparation Overview