Environmental Specifications - Cisco CRS-1 Site Planning Manual

Chapter 3 Technical and Environmental Specifications
Table 3-3
Mounting screws
Compliance
Additional Rack Considerations
Interface cables

Environmental Specifications

Table 3-4
Table 3-4 8-Slot Line Card Chassis Environmental Specifications
Description
Temperature
Humidity
Altitude
Heat dissipation
External cooling requirements
Chassis airflow
Power system airflow
Sound power level
(fixed configuration power)
Sound power level
(modular configuration power)
Shock and vibration
1. Heat dissipation from the DC power system based on maximum output power capacity at 94% efficiency.
2. Heat dissipation from the DC power system based on maximum output power capacity at 88% efficiency.
Depending on the hardware deployed at your site, your system may not consume or be capable of consuming the maximum power supplied by the power
system.
OL-5802-09
8-Slot Line Card Chassis and Equipment Rack Specifications (continued)
•
•
Note
Make sure that the rack complies with all appropriate standards for
your geographical area—for example, NEBS Seismic Zone 4
(GR-63-CORE, Sections 4.4.1 and 4.4.2).
When choosing a rack, consider cabling needs (chassis front). Allow
at least 95 lb (43.1 kg) weight for each chassis for cables.
lists the environmental specifications for the Cisco CRS 8-slot LCC.
Value
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)
Operating: 5 to 85% noncondensing
Nonoperating: 5 to 90% noncondensing, short-term operation
1 to 5906 ft (0.305 m to 1800 m) at 122°F (50°C), short-term
Up to 13,123 ft (4000 m) at 104°F (40°C) or below
28,720 BTU per hour (fixed configuration DC)
32,570 BTU per hour (modular configuration DC)
2.3 tons
Up to 900 cubic feet (25,485 liters) per minute
Up to 240 cubic feet (6800 liters) per minute
81 dB—80°F (27°C) or lower (fan speed 4000 RPM, nominal)
92 dB—104°F (40°C) or higher (fan speed 6500 RPM)
77 dB—80°F (27°C) or lower (fan speed 3700 RPM)
89 dB—104°F (40°C) or higher (fan speed 6500 RPM)
Designed and tested to meet the NEBS shock and vibration standards defined in
GR-63-CORE (Issue 2, April 2002).
Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Site Planning Guide
48 screws for each chassis, 12 screws in each of 4 vertical rails,
installed in holes with tick marks
Number 10-32 x 5/8 in. long socket head cap screws (sixty
screws provided with the chassis)
If you plan to use mounting screws other than the ones
shipped with the chassis, you can use 10-32, 10-24, 12-24, or
M5 screws. (M6 and 1/4-20 screws do not fit.)
Environmental Specifications
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