GE Consumer & Industrial Offers Three-Phase General Purpose Transformers as part of various dry type vented transformers. These are available in core and coil design. These Three-Phase General Purpose Transformers are QL type and use a UL recognized 220 degree C insulation system. These transformers are offered in aluminum and copper and in all three temperature rise ratings. These are offered for 15 - 1000kVA. These Three-Phase General Purpose Transformers are widely used in Motors, Incandescent lighting, Motor generators, Resistance heating. Some key features of these Three-Phase General Purpose Transformers are as follows: