Tag Archives: Variable Speed Drives

Recently Mobile Electrics were commissioned to complete an electrical upgrade of air-handling units, providing fresh air to two inner Melbourne cinema complexes. Initially, in the cinemas when the temperature reached its desirable maximum/minimum the whole unit would switch off until the climate was too hot or cold. In order to provide a more energy efficient […]

More often these days, multiphase A.C. electric motors are being controlled by variable speed drives, commonly referred to as VSD’s or VFD’s. The benefits of these devices in reducing power usage, and thus running costs is beyond the question. An example is on building HVAC systems, where mechanical dampers traditionally are the main method of […]