English Cast Resin Transformers for Motor Starting TMC is the leading Australian manufacturer of cast resin motor starting transformers. TMC produces cast resin motor starting transformers to suit all motor capacities. Motor Starting Transformer Characteristics Motor starting transformers are auto transformers with tappings in the range of 50% to 70% of rated voltage (customer specified). The motor to be started is switched through the auto transformer in such a way as to start the motor at a lower voltage to minimise starting load and the associated supply voltage drop. This method is ofter referred to as the “Korndorfer Starter”. Enclosures The transformers can be supplied in enclosures to various degrees of protection, or open (un-enclosed) if preferred. Enclosure ratings of IP21 to IP33 are common and protection up to IP66 is also available for extreme conditions and flameproof applications. Enclosures are fitted with sealed marshalling boxes fitted with temperature and performance monitoring equipment. Enclosures can be fitted with interlocked doors to provide additional safety. Fan Cooling TMC cast resin transformers can be supplied with fans and controls to increase the rated capacity (kVA). Forced directed air circulation permits a continuous power increase of up to 35% above the rated capacity. Fans can be used to economically provide extra capacity for overload conditions such as cyclic load peaks and traction loads. Information Required with Enquiry Voltages (at no-load) Voltage tapping range. Number of phases (normally 3) Operating frequency Motor rating Motor locked-rotor current Motor start duration (seconds) Number of starts per hour Ambient conditions Design standard Enclosure protection rating Temperature sensing equipment Current sensing equipment (CT’s). Standard Cast Resin Transformers General Information EN 50588 Um≤24kV EN 50588 Um=36kV EN 50541 Um≤12/28/75 kV EN 50541 Um=17,5/38/95 kV EN 50541 Um=24/50/125 kV EN 50541 25kV Um=36/70/145 kV EN 50541 Um=36/70/170 kV Standard Transformers Gallery Special Transformers Special Cast Resin Transformers Cast Resin Transformers for Motor Starting Cast Resin Transformers for Power and Distribution Cast Resin Transformers for Rectifiers Cast Resin Transformers for System Earthing Dry Type Transformers Oil Cooled Transformers Transformer Gallery Reactors Shunt Reactors Current Limiting Reactor Damping Reactors Reactors for Tuning Smoothing Reactors Neutral Earthing Reactors Reactor Gallery Transformers Manufacturing Company España S.A.U. Poligono Bildosola, Parcela B1 48142 Artea (Bizkaia) España Email: ventas@tmc.com.au Tel: +34 94 631 22 80 Fax: +34 94 631 45 24 Transformers Manufacturing Company Pty Ltd 19 Ewing Street Brunswick Melbourne Victoria 3056 Australia. Email: sales@tmc.com.au Tel: +61 3 9356 8700 Fax: +61 3 9356 8701 TMC TRANSFORMERS MANUFACTURING COMPANY © 2014 BY SIROPE