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Voltage Classification - LV, MV and EHV
AC voltages have been classified in various manners. In earlier times, there were just two categories LV and HV. As the level of voltages...
Static and Dynamic Resistance
Static Resistance is the normal ohmic resistance in accordance with Ohm's Law. It is the ratio of voltage and current and is a constant...
Freewheeling or Fly back diodes and their function
Freewheel or Fly back diodes are used across inductive components such as coils to prevent voltage spikes when the power is turned off to th...
Calculating the percentage impedance of a Transformer
The impedance of a transformer is defined as the percentage of the drop in voltage to the at full load to the rated voltage of the transform...
Tan Delta testing - Principle and Method
Tan Delta is a a diagnostic test conducted on the insulation of cables and windings. It is used to measure the deterioration in the cable. ...