Variable Speed Drives generate high frequency currents that circulate through the cabled and physical earth. With standard earth leakage protection relays and electrical system assessments based only on consideration of faults driven by the supply system (50Hz), protection performance is unlikely to be adequate when variable speed drives are used in mining applications.
ResTech was commissioned by Aerogenesis Australia to provide electrical engineering expertise to assist with improving efficiencies of their range of small wind turbines.
This included input into the design of the electronic controller and electrical system to allow for the turbine to become commercially viable and operational.
ResTech recently completed a proof of concept video image processing system to automatically detect failure of a coal wagon to properly empty while over the dump station hopper.
Novecom recently introduced the QuattroSound directional noise monitor, the latest addition to their SentineX range of environmental monitoring solutions.
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