Dell PowerEdge MX740c EMC Technical Specifications - Page 14

Table 8. Maximum vibration specifications Maximum vibration Operating Storage Table 9. Maximum shock specifications Maximum shock Operating Storage Specifications 0.26 Grms at 5 Hz to 350 Hz (all operation orientations). 1.87 Grms at 10 Hz to 500 Hz for 15 min (all six sides tested). Specifications Six consecutively executed shock pulses in the positive and negative x, y, and z axes of 6 G for up to 11 ms. Six consecutively executed shock pulses in the positive and negative x, y, and z axes (one pulse on each side of the system) of 71 G for up to 2 ms. Table 10. Maximum altitude specifications Maximum altitude Operating Storage Specifications 3048 m (10,000 ft) 12,000 m (39,370 ft) Table 11. Operating temperature derating specifications Operating temperature derating Specifications Up to 35°C (95°F) Maximum temperature is reduced by 1°C/300 m (1°F/547 ft) above 950 m (3,117 ft). 35°C to 40°C (95°F to 104°F) Maximum temperature is reduced by 1°C/175 m (1°F/319 ft) above 950 m (3,117 ft). 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 must rectify the environmental conditions. Remediation of environmental conditions is the responsibility of the customer. Table 12. 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 to data center environments only. 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. 14 Technical specifications