EC series GMS1500CS 50 Hz ,3-phase/5-wiring 1 Standards & Conditions Design Standards The designs and the productions are in conformity with: • • • • ISO8528 GB/T2820 YD/502-2007 JB/T20136-2006 Environmental Operating Conditions • • Installation place: Outdoors or indoors (well ventilated). • • Humidity: Less than 80%. Ambient temperature: -25℃ to 45℃.The coolant heater is needed when the temperature is below 5℃ Altitude: Below one thousand (1000) meters above sea Level.