three phase step down transformer: 1. with ten years manufacturing expearience 2. durable,low ... losses 3.customized 4.ISO&CE three phase step down transformer :ISO&CE 1Input voltage; three phase 380VAC2Output voltage; three ... , 100%6Insulation,H grade(180 Degree)7Working temperature,-25°C-40°C8Working Humidity; 95%(Without setting the dew)9Height ... , Y type Dry-type three phase step down transformer