VT - REGULATING AUTOTRANSFORMERS
Opened transformers (NA type) or encased (NC type), single- (type V) or three-phase (type T), designed for stepless adjustment of output voltage in installations and industrial or power engineering devices. The transformers are made with Class I insulation and protection grade IP00 or IP23, maximum ambient temperature 40°C, thermal class of insulation B (130°C), manufactured in compliance with EN 61558-2-14