A Slip Ring Induction Motor is a type of asynchronous induction motor. Slip ring induction motors rotor is wound identically to the stator and is connected through rotating electrical contacts known as slip rings. These slip rings let the induction…
Critical disruptive voltage is defined as the voltage at which complete disruption of the dielectric strength of air occurs. if the voltage increases above critical disruptive voltage corona occurs. 𝛿: air density correction factor r: radius of conductor d: distance of…
Corona effect (also known as Corona Discharge) is nothing but the ionization of air around the power conductor. The air around the power conductor has free electrons due to radioactivity and cosmic rays. As the potential between conductors increases potential gradient…
The permanent magnet moving coil instruments (PMMC instruments) are suitable for DC quantity measurements only. PMMC instruments working principle based on Faraday’s law of electromagnetic induction states that when the current carrying coil is placed in the magnetic field it experiences…
Why Earthing/grounding testing is Necessary? Testing the quality of the Earthing system has been a critical part of any electrical system maintenance program. Ground electrodes provide a safe path to Earth for the dissipation of fault currents, lightning strikes, static…
Definition: The non-uniform distribution of current through the given cross-section area of the conductor, when it operated on AC current is known as the Skin Effect. When DC current flows through the conductor it is distributed uniformly throughout the cross-section area…
Winding insulation resistance checking of three-phase / single phase Motor The motor is mostly used machine to drive loads in the industry, for pumping, elevators, and conveyor belts. so its reliability must be maintained, for the long life of the…
The transformer is the main device of the transmission and distribution network hence its reliability is important in every aspect. The transformer must be able to deliver the required power to load. single transformer unit is used for distribution purposes…
How three-phase bridge rectifier work? Rectifier is a device that converts AC voltage into DC voltage. rectifier uses a diode and thyristor, to convert AC supply voltage into DC voltage. For economics of generation and transmission of power. The electric…
There are many electrical components are used in the electronic and electrical circuit like a resistor, inductor, diode, transformer, capacitor, and many more. without these electrical components, the circuit is incomplete. each part has a different function in the circuit.…
