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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...
Transformer bushing

Transformer Bushing Operating Principle

Transformer Bushing Operating Principle In electric power, a bushing is an insulated device that allows an electrical conductor to pass safely through a grounded conducting...
Saturation Curve

Reason For Transformer Core Saturation

What is Transformer Core Saturation? Before to know about transformer core saturation you must know about reluctance, magnetic flux, flux density, and mmf (ampere turn)....

Significance of Leakage Reactance of Transformer

Transformer Leakage Reactance: In an electrical machine such as alternator, transformer, motor etc, the inductance is a responsible for creating flux in the machine. In...
Power transformers

Power Transformer & Distribution Transformer

Distribution Transformer & Power transformer: Based on the service of the transformers in power systems may be divided into two categories. These are Distribution transformers ...

Difference Between CT and PT Current Transformer & Voltage Transformer

12 Difference Between CT and PT Current Transformer & Voltage Transformer Current transformers are working as a step-up transformer where the voltage transformer works...
Buchholz Relay Working Principle practical person

Basic Concept of Bucholzz Relay Working Principle

Bucholzz Relay Working Principle: The transformer has lot of protection, but more than 500kVA rating none of the transformer manufactured more than without bucholzz relay....

Why Earthing Transformer are used

Why Earthing Transformer are used? Earthing transformer is an auxiliary transformer and a part of an electrical earthing system, which is used to provide neutral...

Why Zig-Zag Winding Transformer Used

What is Zig-Zag Connection? Zig-Zag connection is the combination star and delta connection and it has the both advantage of a star and delta. Zig-Zag configuration: ...

Why Tertiary Winding is used in transformer?

Why tertiary winding are used in transformer? In two winding transformer both primary and secondary is having the same kVA rating. Both windings are independent...

What is Reactive Power

Reactive Power: Reactive power is an imaginary power which is delivered by capacitors and alternators. Consider the case in which the load is a pure...

Current Transformer

Current transformer: Current transformer is nothing but a step-up transformer, whose primary has less turns typically the line consider as the primary winding and the...

Basic Concept of Transformer

Transformer: A transformer is essentially a static electromagnetic device consisting of two or more windings which link with a common magnetic field. A transformer works...

What is Voltage, Basic Concept of Voltage For Student

What is Voltage, Basic Concept of Voltage For Student: Voltage can be defined as the potential difference between the two charges points. Otherwise, electric pressure...

Three Phase Transformer Vector Grouping Significance

Basic Idea about transformer vector group In theory of a three-phase transformer works like three equal and separated single-phase transformers (working separately with three phase...
Transformer vector grouping use

Three Phase Transformer vector group and Significance of vector Grouping

Three Phase Transformer vector group explanation: Basic Idea about transformer vector group In theory of a three-phase transformer works like three equal and separated single-phase transformers...

Why transformer Rating in KVA exact answer

Why transformer rating in KVA: Actually, every one says it is due to core losses and copper loss of the transformer, but actually, that is...

Why we should not give dc supply to Transformer

Why we should not give dc supply to Transformer: Transformers are the static device; it just transfers the energy from one winding to another winding...

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