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

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...
Through Fault

What is Through Fault

What is Through Faults: Through fault is nothing but a fault which occurs outside of the protective zone or in simple words the external fault...

Plug Setting Multiplier & Time Setting Multiplier

Plug Setting Multiplier & Time setting Multiplier Calculation: Plug setting multiplier is nothing but a ratio between the actual fault current in the relay operating...
Directional Over Current Relay Explanation

Directional Over Current & Non Directional Over Current Protection Working Principle

Directional Over Current & Non Directional Over Current Protection Working Principle: Directional Earth Fault Relay is used to protect the transformer/generator/alternator from over current fault....
diode failure relay

Rotating Diode Failure Relay Working Principle

Rotating Diode Failure Relay Working Principle? The diode failure relay is used to protect the alternator’s automatic voltage regulator from severe damage against the rotating...
Merz Price differential protection for generator

Merz Price Differential Protection for Generators

Biased Differential scheme (Merz-Price Scheme) for protection of Generators: This is most commonly used protection scheme for the alternator stator windings. The scheme is also...
Backup impedance Protection Working Principle (21G)

Backup impedance Protection Working Principle (21G)

Backup impedance Protection Working Principle (21G) The Backup Impedance Protection is used to protect the generator from supplying the over loaded or faulty system and it...
Under frequency protection

Under Frequency Protection Working Principle – 87U

Under Frequency Protection Working Principle: Under Frequency Protection is used to protect the transformer/generator/alternator when the frequency drops below the operating frequency. It is a...
Low Forward Power protection

Low Forward Power Protection 32F

Low Forward Power Protection 32F: Low forward Power protection occurs when the generator is not able to produce the minimum output power. Typically, the generator...
Pole Slip relay

Pole Slip Protection Out of Step Protection 78PS Working Principle

Pole Slip protection or out of step Protection 78PS: Pole Slip protection: Under normal condition the generator is synchronized with grid. But during some extreme...