9 ENVIRONMENTAL CONDITIONS
9.1 AMBIENT TEMPERATURE RANGE
Compliance IEC 60255-27: 2005
Test Method IEC 60068-2-1:2007 and IEC 60068-2-2 2007
Operating temperature range -25°C to +55°C (continuous)
Storage and transit temperature range -25°C to +70°C (continuous)
9.2 AMBIENT HUMIDITY RANGE
Compliance IEC 60068-2-78: 2001 and IEC 60068-2-30: 2005
Durability 56 days at 93% relative humidity and +40°C
Damp heat cyclic six (12 + 12) hour cycles, 93% RH, +25 to +55°C
9.3 CORROSIVE ENVIRONMENTS
Compliance IEC 60068-2-42: 2003, IEC 60068-2-43: 2003
Industrial corrosive environment/poor environmental
control, Sulphur Dioxide
21 days exposure to elevated concentrations (25ppm) of SO2
at 75% relative humidity and +25°C
Industrial corrosive environment/poor environmental
control, Hydrogen Sulphide
21 days exposure to elevated concentrations (10ppm) of SO2
at 75% relative humidity and +25°C
Salt mist IEC 60068-2-52: 1996 KB severity 3
Chapter 16 - Technical Specifications MiCOM P747
400 P747-TM-EN-1
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