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Loading Transformer Working Principle

Loading Transformer Working Principle: Loading transformers are nothing but a normal transformer which is designed (to operate on short time kA Loads) to inject current,...

Isolation Transformer | Purpose Of Isolation Transformer

Isolation Transformer: Isolation transformers are used to transfer electrical power from a source of alternating current power to a device, where the powered device is...

Why Stones are used in Transformer Yard & Switchyard?

Why Stones is used in Electrical Switchyard & Transformer Yard: Reasons for using Stones is used in Electrical Switchyard & Transformer Yard: Stones in the...

What is Percentage Impedance & Calculate Percentage Impedance?

What is Percentage Impedance & Calculate Percentage Impedance? "The percentage impedance is nothing but a measure of the volt drops when the transformer in on...

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,...

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...
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...
Capcitive Voltage transformer image

CVT in Electrical Capacitive Voltage Transformer CVT

CVT in Electrical Capacitive Voltage Transformer: CVT Capacitive Voltage Transformer is a step down transformer just like potential transformer which converts high voltage in to...

Classification Generator tripping Scheme Class A, Class B & Class C

Classification Generator tripping Scheme Class A, Class B & Class A: The generator Tripping classified according to the fault. Protection of the generator: Voltage Controlled Over...

Unit Auxiliary Transformer (UAT) Differential Protection 87UAT

Unit Auxiliary Transformer (UAT) Differential Protection: Unit Auxiliary Transformer (UAT) differential protection is used to protect the generator and transformer’s winding internal short circuit, inter...

PT Fuse Failure Relay Working Principle VTFF

PT Fuse Failure Relay Working Principle VTFF: PT Fuse Failure Relay VTFF is used to sense the PT fuses healthiness. Generally, In high voltage power...

Generator and Transformer Unit Biased Differential Protection

Generator and Transformer Unit Biased Differential Protection: In a high voltage transmission system, the bus bars are at very high voltages than the generators. The...

Pole Discrepancy Protection Working Principle – 52 PD

Pole Discrepancy Protection Working Principle: Pole discrepancy protection is used to protect the generator/alternator from single phasing when the circuit breaker is failured to close...
Under Voltage protection

Under Voltage Protection Working Principle 27

Under Voltage Protection Working Principle 27: Under voltage fault protection is used to protect the alternator/generator/transformer winding from low voltage operation. Under voltage protection sense...
Over Voltage protection Working Principle

Over Voltage Protection Working Principle 59

Over Voltage protection 59: Over voltage protection is used to protect the synchronous Generator/transformer/alternator form high voltage. Generally, overvoltage occurs due to sudden load through...
Neutral Grounding Transformer

Advantage of Neutral Grounding Transformer NGT

Advantage of Neutral Grounding Transformer NGT? Neutral grounding transformers are a single phase transformer which is used to protect the generator/alternator winding from damaging short...
NGR working on Star Winding

7 Purpose of NGR Neutral Grounding Resistor Transformer & Generator

Why NGR Neutral Grounding Resistor are used. The Short form of NGR is Neutral Grounding Resistor. NGRs are used in an electrical power system to...

4 Different Types of Current Transformers

Different types of current transformers: Wound type Current Transformer: The primary of the current transformers is directly connected in series with the line conductor that carries...
SFRA Test For Transformer

Sweep Frequency Response Analysis -SFRA Test Procedure

Sweep Frequency Response Analysis -SFRA Test: > SFRA test is nothing but a Sweep Frequency Response analysis, which is used to find out the physical condition...