Juniper E SERIES BROADBAND SERVICES ROUTERS 11.3.X - ERX HARDWARE GUIDE REV 26-9-2010 Hardware Manual page 130

ERX 11.3.x Hardware Guide
Table 17: ERX310 Router Specifications (continued)
Category
Ambient operating humidity
Ambient storage temperature
Ambient storage humidity
Heat Dissipation
DC Input
Voltage
Current
Power
Redundancy (input power)
AC Input
Power required
AC line frequency
Power
Space Requirements
Airflow
NEBS Certification
114
Specification
Long term: 5% to 85% (noncondensing)
Short term: 5% to 95% (noncondensing)
–40° to 158° F (–40° to +70° C), 95% relative humidity
5% to 95% (noncondensing)
500 W, 1706 BTU/hour maximum
–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.
9 A @ –48 VDC
500 W maximum
2 independent line feeds
90-265 VAC @ ~5 A
50-60 Hz
500 W
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 direction is in through the right side and out through the left side. See Figure
53 on page 124.
SR-3580 (FD-15): Network Equipment Building System (NEBS) Criteria Levels, Issue
1, November 1995
GR-63–CORE: Network Equipment Building System (NEBS) Requirements: Physical
Protection, Issue 2, April 2002
GR-1089 (LSSGR, FD-15): Electromagnetic Compatibility and Electrical Safety -
Generic Criteria for Network Telecommunications Equipment, Issue 2, Revision 1,
February 1999
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