An overview of Electric Machines
Electricity does not exist naturally in any useful form. It has to be generated from any other sources of energy such as solar, wind, hydro, thermal, atom, etc. Photovoltaic cells…
What is meant by plugging a motor?
Induction motors are one of the major power-consuming loads on the planet today and are widely used for all industrial and domestic applications. Plugging is one of the braking techniques…
Selection of contactor and overload relay for DOL starter
The below article can guide you through the selection of contactors and overload relays for a three-phase DOL starter and how to optimally size a DOL starter. Data required for…
Which is the most efficient electrical machine?
The most efficient electrical machine is the transformer. Transformers have efficiency above 95%. The autotransformer has an efficiency of close to 98%. The maximum efficiency is achieved under the fully…