Juniper Networks 8 manual ERX-7xx Models Specifications Category

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)
Ambient operating humidity		Short term: 23° to 122° F (–5° to 50° C)
		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