Abstract: The present disclosure relates to a heating element (5) for heating electrical equipment mounted on a DIN rail (1). The heating element (5) comprises an elongated flexible sheet (11) made of an electrically insulating material and a layer comprising Positive Temperature Coefficient paint (12) disposed on an upper surface (11a) of the flexible sheet (11). A method for mounting the heating element (5) to a DIN rail is provided. The method comprises bending the flexible sheet (11) such that an inverted U-shape is formed along the length of the flexible sheet and inserting the heating element (5) into a groove of the DIN rail (1) such that the bent flexible sheet stays in position by spring force of the bend. A use of the heating element for heating a DIN rail is also provided.

Abstract: A transformer arrangement comprising a transformer having a neutral and formed as a symmetrical transformer, in particular a cage transformer and having a reactor coil connected to the neutral of the transformer is provided. The transformer can be of any type having a neutral such as a Y-n/Y-n, Z-n/Z-n, Y-n/Z-n or a Z-n/Y-n transformer. By providing a transformer having symmetrical phases connected to a reactor coil a transformer arrangement having less weight is obtained. The lower weight is obtained because in comparison to using an E core for the transformer all phases will be symmetrical so that if a ground fault occurs in one of then phases there is no need for any compensatory windings regardless of which phase suffers the ground fault.

Abstract: A transformer arrangement comprising a transformer having a neutral and formed as a symmetrical transformer, in particular a cage transformer and having a reactor coil connected to the neutral of the transformer is provided. The transformer can be of any type having a neutral such as a Y-n/Y-n, Z-n/Z-n, Y-n/Z-n or a Z-n/Y-n transformer. By providing a transformer having symmetrical phases connected to a reactor coil a transformer arrangement having less weight is obtained. The lower weight is obtained because in comparison to using an E core for the transformer all phases will be symmetrical so that if a ground fault occurs in one of then phases there is no need for any compensatory windings regardless of which phase suffers the ground fault.