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mpr motor protection relay

Motor Protection Relay MPR Relay Working Principle Higher HP & High...

Motor Protection Relay MPR Relay Working Principle: Motor Protection relays are used to protect the higher HP high voltage induction motor. When we increase the...
Why DC Does Not Have Power factor3

Why DC Does Not Have Power Factor ?

Why DC Does Not Have Power factor: In AC Power system power factor plays major role while using AC loads. Here power factor is nothing...
Why transformer taps are preferred on High Voltage Side

Transformer Taps Are Provided On High Voltage Side Why?

Transformer taps are preferred on High Voltage Side why? Transformer taps are used to changing the transformer voltage level when it is connected to the...

Relationship of Frequency Vs KVA Output or Rating of Transformer

Relationship of Frequency Vs KVA output or Rating of the transformer. When we purchase a transformer it is always marked in that name plate is...

Transformer Core Construction Details

Transformer Core: Generally, transformers are consisting of copper winding such as primary winding, secondary winding and auxiliary winding or tertiary winding, electrical insulation, core, bushings,...
Harmonic In Electrical How Electrical Harmonics Occurs in Power system

Harmonic In Electrical | How Electrical Harmonics Occurs in Power...

What is Harmonic in Electrical: Harmonic in electrical is nothing but an integer multiplication of fundamental frequency. Harmonic are an unwanted distorted waveform which frequency...
Vector sum three phasor

Vector Sum Three Phase Current

Vector Sum Three Phase Current: Vector sum is nothing but a calculating total current magnitude as well as phasor. i.e. consider three phase current magnitude...
Merz Price differential protection for Transformer

Merz Price Differential Protection for Transformer

Merz Price Differential Protection for Transformer: Merz price differential protection is used to protect the transformer from internal short circuit, Internal ground faults and inter...
inter turn short

Difference Between Inter Turn Short And Internal Short

Difference between inter turn short and internal short? Electrical machine consists of copper winding and they will be insulated and wound in a core. The...
Power Generating Station Operation & Maintenance Competency Certificate in Tamilnadu

Power Generating Station Operation & Maintenance Competency Certificate in Tamilnadu

Power Generating Station Operation & Maintenance Competency Certificate in Tamilnadu   Fees to get Power Generating Station Operation and maintenance Competency Certificate is Rs.750/-. The...
Electrical license Renewal

Electrical license Renewal in Tamilnadu Supervisor Contractor & Wireman

Electrical license Renewal in Tamilnadu Supervisor Contractor Workmen: After getting electrical contractor license and electrical supervisor license, both are valid only for four years. Each...
Single phase preventer

Single Phase Preventer Working Principle | Induction Motor Protection

Single Phase Preventer Working Principle: Single phase preventer is used to protect the induction motor from single phasing fault. Single phasing is a very dangerous...
Current based relay Voltage based relay

Current Based Relay | Voltage Based Relay

Current based relay | Voltage based relay: Current based relay: Current based relay is nothing but an operating element or relay coil is designed to operate...
Phase reversal relay Circuit Diagram

Phase Reversal Protection | Induction Motor Protection

Phase Reversal Protection | Induction Motor Protection: Phase reversal protection is used to protect the induction motor, from running in reverse direction. Normally running a...

Phase Fault Protection | Induction Motor Protection

Phase Fault Protection | Induction Motor protection Phase fault protection is nothing but an attracted armature type relay unit is connected in each phase current...
ELCB Working Principle

ELCB Earth Leakage Circuit Breaker Working Principle

ELCB Earth Leakage Circuit Breaker| Ground Fault Protection on Induction Motor: The ground fault protection is used to protect the induction motor from ground fault...

Difference between Surge Arrester, Lightning Arrester and Lightning Rod

Difference between Surge Arrester, Lightning Arrester and Lightning Rod: Surge arrester is used to protect the circuit or electrical equipment from high voltage transient or...
End fault Protection

End Fault Protection Working Principle

End Fault Protection Working Principle: End Fault Protection is used to protect the busbar from the fault nearer to the sensing device typically current transformer...
Droop CT Droop current transformer

Droop CT – Droop Current Transformer

Droop CT Droop Current transformer is used to maintain the reactive power of the generator. Droop CTs are ordinary current transformer which is used only...
Substation ss

Electrical Substation (SS)

Electrical substation: Substation is a place or station which is used to transmit & distribute the power. It is a middle part of the electrical...