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Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis Site Planning Guide
OL-5802-06
Chapter 3 Technical and Environmental Specifications
Environmental Specifications
Environmental Specifications
The following table lists the environmental specifications for the Cisco CRS-1 8-slot line card chassis.
Table 3-3 8-Slot Line Card Chassis Environmental Specifications
Description Value
Temperature Operating, nominal: 41° to 104°F (5° to 40°C)
Operating, short-term: 23° to 122°F (–5° to 50°C)
Nonoperating: –40° to 158°F (–40° to 70°C)
Humidity Operating: 5 to 85% noncondensing
Nonoperating: 5 to 90% noncondensing, short-term operation
Altitude 1 to 5906 ft (–60 to 1800 m) at 122°F (50°C), short-term
Up to 13,123 ft (4000 m) at 104°F (40°C) or below
Heat dissipation 27,350 BTU per hour
External cooling
requirements
2.3 tons
Chassis airflow Up to 900 cubic feet (25,485 liters) per minute
Power system airflow Up to 240 cubic feet (6800 liters) per minute
Acoustic noise
3.3 ft (1 m) from chassis
76 dB—80°F (27°C) or lower (fan speed 4000 RPM)
86 dB—104°F (40°C) or higher (fan speed 6500 RPM)
90 dB—failure condition (fan speed 7500 RPM)
Shock and vibration Designed and tested to meet the NEBS shock and vibration standards
defined in GR-63-CORE (Issue 2, April 2002).