Dell HHB, Руководство пользователя

Страница: 19 / 134

Table 16. Operating temperature derating specifications (continued)
Temperature Specifications
40 °C to 45 °C (104 °F to 113 °F) Maximum temperature is reduced by 1°C/125 m (1°F/228 ft)
above 950 m (3,117 ft).
Particulate and gaseous contamination specifications
The following table defines the limitations that help avoid any equipment damage or failure from particulates and gaseous contamination. If
the levels of particulates or gaseous pollution exceed the specified limitations and result in equipment damage or failure, you may need to
rectify the environmental conditions. Remediation of environmental conditions is the responsibility of the customer.
Table 17. Particulate contamination specifications
Particulate contamination Specifications
Air filtration
Data center air filtration as defined by ISO Class 8 per ISO 14644-1
with a 95% upper confidence limit.
NOTE: This condition applies only to data center
environments. Air filtration requirements do not apply to
IT equipment designed to be used outside a data center,
in environments such as an office or factory floor.
NOTE: Air entering the data center must have MERV11
or MERV13 filtration.
Conductive dust
Air must be free of conductive dust, zinc whiskers, or other
conductive particles.
NOTE: This condition applies to data center and nondata
center environments.
Corrosive dust • Air must be free of corrosive dust.
• Residual dust present in the air must have a deliquescent point
less than 60% relative humidity.
NOTE: This condition applies to data center and nondata
center environments.
Table 18. Gaseous contamination specifications
Gaseous contamination Specifications
Copper coupon corrosion rate <300 Å/month per Class G1 as defined by ANSI/ ISA71.04-1985.
Silver coupon corrosion rate <200 Å/month as defined by AHSRAE TC9.9.
NOTE: Maximum corrosive contaminant levels measured at ≤50% relative humidity.
Expanded operating temperature
Table 19. Expanded operating temperature specifications
Expanded operating temperature Specifications
Continuous operation 5°C to 40°C at 5% to 85% RH with 29°C dew point.
NOTE: Outside the standard operating temperature
(10°C to 35°C), the system can operate continuously in
temperatures as low as 5°C and as high as 45°C.
Technical specifications 19