GEAFOL dry-type transformers conform with the fire behavior, environmental and climate classes defined in standard IEC 60076-11 as follows: E2 Environmental class (E3 on request); F1 Fire behaviour class (highest defined class); C2 Climate category (C3, C4, C5 on request); Since July 1, 2015, transformers that are installed within the European Economic Area (EEA) must meet the ecodesign ...
Ever since the discovery of the 160-min radial pulsations of the Sun ample data have been collected suggesting their impact on the solar physics [1,2]. 160-min oscillations are observed in the intensity of light, radio and infrared radiation emitted from the resting regions of the Sun [3]. The pulsations observed in the radio brightness lag ...