Potential or Voltage Transformer: The purpose of the Potential Transformer is to provide an isolated secondary voltage that is in-phase and exact proportionate representation of primary voltage. Potential Transformers are… Read more »
Electrical Interview Questions-Series-4 In this series of Interview questions we will learn about the major differences in Electrical Engineering. Major Differences in Electrical Engineering: 1. What are the major differences… Read more »
Differential Protective Relay is a protective relay that functions on a percentage or phase angle or other quantitative difference of two currents. Differential relaying provides selectivity by providing a zone… Read more »
Motor protection relays are used to provide various protections for the motors. These differ from the over current relays in terms of protections they offer. To understand the working of… Read more »
Over current/Earth fault relays are the basic protection relays. Used for protection of transformers and feeders from over current and earth faults. When excessive current flows in a circuit, it… Read more »
Numerical Relays working explained in this post with the help of a Numerical relay used in industrial applications. Brief Introduction about Relay: RELAY: A Relay is a protection device that… Read more »
Auto Changeover Scheme Introduction: In this post the Auto Changeover Scheme for two incomers and one Bus-coupler system is explained. In Industries for distribution of electrical power with reliable supply… Read more »
In this post we are going to see, how the High Impedance Restricted Earth fault protection scheme works by using Metrosil and Stabilizing Resistors. Why REF protection is required while… Read more »
In this post the Single Line Diagram of typical Power plant is explained, it covers the Bus Transfer methods also. Single Line Diagram SLD gives the information about how the… Read more »
PHASOR/VECTOR GROUPS: Phasor or Vector groups are used to denote different connection methods for poly phase transformers. This knowledge is required for connecting the poly phase transformers in parallel. To… Read more »