## Inrush Currents in Transformer

Inrush Currents in Transformer: Magnetizing Inrush Currents in Transformer contain pronounced harmonics but the current during internal fault conditions is sinusoidal. Advantage is taken of this fact in the design…

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## Static Differential Relay Block Diagram and Working Principle

Static Differential Relay Block Diagram and Working Principle: The differential relay measures the phasor difference between two similar electrical quantities (voltage-voltage or current-current). The rectifier bridge amplitude comparator is the…

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## Incandescent Lamp – Construction, Working and Advantages

Incandescent Lamp - Construction, Working and Advantages: For sometimes the arc lamps were used for general lighting purpose but as the carbon-arc lamps were complicated so these have been superseded…

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## Transformer Protection Interview Questions and Answers

Transformer Protection Interview Questions and Answers: 1. What are the faults that are likely to occur in a power transformer ? Ans. The faults likely to occur in a power…

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## Apparatus Protection in Power System Articles

Apparatus Protection in Power System Articles: Bus Zone Protection : Bus Zone Protection includes, besides the bus itself the apparatus such as circuit breakers, disconnecting switches, Apparatus Protection in Power…

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## Percentage Biased Differential Relay

Percentage Biased Differential Relay: Percentage Biased Differential Relay - In order to avoid undesirable operation on heavy external faults due to CT errors and ratio change as a result of…

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## Differential Protection of Transformers

Differential Protection of Transformers: Differential Protection of Transformers is the most important type of protection used for internal phase-to-phase and phase-to-earth faults and is generally applied to transformers having ratings…

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## Power System Protection and Switchgear Articles

Power System Protection and Switchgear Articles: This Power System Protection and Switchgear Articles which includes the following topics: Basic Ideas of Protection Relay Fault Meaning Zone Protection Essential Qualities of…

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