Single- and three-phase regulating autotransformers Rated voltage PRI: Rated voltage SEC: Frequency: Output current: Regulating autotransformers, open build (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 IP20, maximum ambient temperature 40°C, thermal class of insulation B (130°C), manufactured in compliance with EN61558-2-14. ul. Postępowa 25/27, 93-347 Łódź, Poland tel. (42) 640-15-39, fax: (42) 640-15-41 [email protected], www.brevetrafo.com Due to the constant development of the construction and changes in technical requirements, Breve Tufvassons reserves the right to change the above paramete