... tothree-phase marine flameproof motors,is an appropriation electric motor that designs for the well ventilated machine of ships. ... the Y- H series electric motor homology.Operating ConditionsTemperature of Ambient air:-15°C~45°C;Altitude:0m;Rated Frequency:50Hz ... Duty Type:ContinuousOrdering Information1. When placing an order,please specify motor’s type, output, number of poles, voltage, frequency, ...