Juniper Networks ERX Hardware 8 - Manual (Page 140)

ERX 8.0.x Hardware Guide
ERX-7xx Models Specifications
Table 17: ERX-7xx Models Specifications
Category Specification
Weight Weights are approximate.
Chassis only 22 lb (9.9 kg)
Chassis fully configured 46 lb (20.7 kg)
Dimensions 10.5 (H) x 19 (W) x 16 (D) inches; 26.67 x 48.26 x 40.64 cm
Environmental Requirements NEBS GR-63-CORE compliant
Ambient operating temperature Long term: 41° to 104° F (5° to 40° C)
Short term: 23° to 122° F (–5° to 50° C)
Ambient operating humidity Long term: 5% to 85% (noncondensing)
Short term: 5% to 95% (noncondensing)
Ambient storage temperature –40° to 158° F (–40° to +70° C), 95% relative humidity
Ambient storage humidity 5% to 95% (noncondensing)
Heat Dissipation 1400 W, 4780 BTU/hour maximum
DC Input
Voltage –40 to –72 VDC
NOTE: If the voltage rises above –40 VDC, the system powers
off. The system does not power on again until the input
voltage reaches –43 +/– 0.5 VDC.
Current 30 A @ –48 VDC
Power 1400 W maximum
Redundancy (input power) 2 independent line feeds
Space Requirements 3 feet (90 cm) behind router or rack
Do not block air vents on sides of the router.
Do not place equipment that exhausts hot air to left
on the right of the router.
Be aware that router exhausts hot air from its left side.
Airflow Airflow direction is in through the right side and out
through the left side. See Figure 51.
122 ERX-7xx Models Specifications