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Numerical Relay Connections

Working of Numerical Relays:

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 »

Numerical Relays    Advantages, Binary Inputs, Binary Outputs, Common Features, Digital Inputs, Digital Ouptputs, Latch LED, LED Configuration, Numerical Relay, Relay Communication, Unlatch LED
Auto Changeover Scheme for Two Incomers and One Bus-coupler

Auto Changeover Scheme:

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 »

Protection    Auto Changeover, Dead Bus Causes, Momentary Paralleling, One Buscoupler, Two Incomers
High Impedance REF scheme wiring

High Impedance Restricted Earth Fault Protection: [64H]

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 »

Protection    High Impedance REF, Metrosil, Neutral CT, REF Connecting Diagram, REF protection, Stabilizing Resistor, Transformer
Single Line Diagram of Power Plant

Single Line Diagram of Power Plant

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 »

Power Systems    Auto Transfer, BUS CHANGEOVER, Generator, GT, Momentary Paralleling, Power Plant, SLD, ST, UAT
Vector Groups of Transformer

Vector Groups of Transformer:

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 »

Electrical Machines    Dyn1, Dyn11, Groups, Phasor, Transformer Name Plate, Vector, Vector Groups Examples, YNd11
Block Diagram of Trivector Meter

Working of Trivector Meter:

Trivector Meter: Trivector meter is an energy meter which accurately measures all the parameters of supply such as voltage, current, power factor, active load, reactive load, apparent load etc., now… Read more »

Electrical Measurements    Active, Apparent, CT/PT Connection Diagram, Energy Meter, Main parts, Maximum Demand, Reactive, Trivector Meter, Working principle
Vacuum Bottle Parts of VCB

Practical Working of Vacuum Circuit Breaker

In this post we are going to learn the practical working of vacuum circuit breaker [VCB] in detail. Vacuum Circuit breaker is used in medium voltage Switchgear for performing switching… Read more »

Protection    AntiPumping Relay, Circuit Breaker, Parts of VCB, Vacuum Circuit Breaker, VCB, VCB Operation
DC Earth fault indication on FCBC charger

How to Trace out DC Earth Fault Using Multimeter?

DC Earth fault need to identify and remove as early as possible to avoid tripping of protection circuits. DC Earth faults are frequently occurring on FCBC Charger, they should be… Read more »

Protection    Battery Bank, DC, DC Earth Fault, Electrical, FCBC Charger, Multimeter, Negative, Positive, Technology
Electrical Interview Questions

Electrical Interview Questions: Series-3

Electrical Interview Questions-Series-3 In this series of Interview questions we will see some Electrical DC related problems in ElectricalEngineering. DC Electrical Questions: The following are the important DC Electrical Questions… Read more »

AE EXAM    DC, Electrical, Electrical Tester, FCBC Charger, Interview, MCCB, Questions, Size of AC motor, Size of DC motor
Electrical Interview Questions

Electrical Interview Questions: Series-2

Electrical Interview Questions Series-2 In this series of Interview questions we will see some Protection Electrical related questions. Protection Electrical Interview Questions: For any Electrical job the knowledge of protection… Read more »

AE EXAM    Electrical, Interview, MCCB, Motor, NEUTRAL, NEUTRAL LINK, Questions, Undervoltage Protection

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