Synchronous Motors Types: Commonly used Synchronous Motors Types are: wound field, permanent magnet, synchronous reluctance and hysteresis motors. All these motors have a stator with a 3-phase winding, which is…
Starting of Induction Motor Drives: Starting of Induction Motor Drives arrangement is chosen based on the load requirements and nature of supply (weak or stiff). It may be required to…
Switchgear Articles: Switchgear Definition: Switchgear Definition status that, The apparatus used for switching, controlling and protecting the electrical circuits and equipment is known as switchgear. The switchgear equipment is essentially…
Overvoltage Articles: Simpson Theory of Lightning: The factors that contribute to the formation or accumulation of charge in the clouds are too many and uncertain. But during thunderstorms, positive and…
High Voltage Testing of Electrical Apparatus Articles: Classification of High Voltage Testing Methods: Classification of High Voltage Testing Methods are divided into two groups: Power Frequency Withstand Voltage Impulse withstand…
High Voltage Laboratory Design Articles: High Voltage Laboratory Equipments: A High Voltage Laboratory Equipments is expected to carry out withstand and/or flashover tests at high voltages on the following transmission…
High Voltage Laboratory Equipments: A High Voltage Laboratory Equipments is expected to carry out withstand and/or flashover tests at high voltages on the following transmission system equipment: Transformers Lightning arresters…
Insulation Coordination of Substation: For steep fronted lightning waves at Insulation Coordination of Substation and at different points on lines, the voltages at sub-stations may exceed the protective level depending…