H3C Technologies H3C SR6600-X - Manual (Page 13)

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Table 1 Temperature requirements
Item Temperature
Operating temperature 0°C to 45°C (32°F to 113°F)
Storage temperature –40°C to 70°C (–40°F to 158°F)
Table 2 Humidity requirements
Item Relative humidity
Operating humidity 5% to 95%
Storage humidity 5% to 95%
Altitude
Table 3 Altitude requirements
Item Altitude
Operating altitude –60 m (–196.85 ft) to 4 km (2.49 miles)
Storage altitude –60 m (–196.85 ft) to 4.5 km(2.8 miles)
Cleanness
Dust buildup on the chassis may result in electrostatic adsorption, which causes poor contact of metal
components and contact points, especially when indoor relative humidity is low. In the worst case,
electrostatic adsorption can cause communication failure.
Table 4 Dust concentration limit in the equipment room
Substance Concentration limit (particles/cu m)
Dust particles
≤ 3 x 10 4
(No visible dust on desk in three days)
NOTE:
Dust particle diameter ≥ 5 μm
The equipment room must also meet strict limits on salts, acids, and sulfides to eliminate corrosion and
premature aging of components, as shown in Table 5 .
Table 5 Harmful gas limits in an equipment room
Gas Max. (mg/m 3 )
SO
2
0.2
H
2
S 0.006
NH
3
0.05
Cl
2
0.01