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Shunt Reactor Definition A shunt reactor is used to neutralize excess capacitive reactive power on long electrical transmission lines. Core of Shunt Reactor Shunt reactors typically use a gapped core, built from Cold Rolled Grain Oriented Silicon Steel to cut down on hysteresis losses. The steel she

Shunt Reactor Definition A shunt reactor is defined as an electrical device that absorbs reactive power in power systems. Reactance Calculation The reactance of a shunt reactor can be calculated as it is nearly equal to its impedance. V-I Characteristics The simple formula of impedance in ohm is Whe

Arc Suppression Coil Definition An arc suppression coil, also known as a Petersen coil, is an inductive coil used to neutralize the capacitive charging current in underground power networks during an earth fault. Purpose and Function The coil reduces the large capacitive charging current during an e

What is a Phase Synchronizing Device? Phase Synchronizing Device Definition A Phase Synchronizing Device (PSD) is defined as a device that synchronizes the switching of circuit breaker poles to the zero crossing of the phase voltage or current waveform. Controlled Switching Device Also known as a Co

What is a Shunt Reactor? Shunt Reactor Definition A shunt reactor is defined as an electrical device used in high voltage power systems to stabilize voltage during load changes. Voltage Stabilization It controls dynamic overvoltage and provides capacitive reactive power compensation in systems above

What is the Resistance of Earth? Earth Resistance Definition An earth electrode is a metal rod or plate that is buried in the soil and connected to the earth terminal of an electrical system. It provides a low-resistance path for fault currents and lightning surges to dissipate into the ground. It a

Earthing Definition Earthing of electrical transmission towers is defined as a safety measure where each tower is grounded to prevent electrical hazards. Footing Resistance Measuring the footing resistance ensures it is below 10 ohms, crucial for tower safety. Pipe Earthing In the pipe earthing syst

What is Low Voltage Switchgear? Low Voltage Switchgear Definition Low voltage switchgear is defined as electrical switchgear rated up to 1kV, including protective devices like circuit breakers and fuses. Components of LV Switchgear LV switchgear includes devices such as circuit breakers, isolators,

What is High Voltage Switchgear? High Voltage Switchgear Definition High voltage switchgear is defined as equipment that manages voltages above 36KV to ensure safe and efficient power distribution. Main Components High voltage circuit breakers, such as air blast, oil, SF6, and vacuum circuit breaker

What is Electrical Switchgear Protection? Switchgear Definition A switchgear is defined as all the switching devices used in power system protection. It includes devices for control, metering, and regulating electrical power systems. When assembled logically, these devices form switchgear. In simple

Medium Voltage Switchgear Definition Medium voltage switchgear ranges from 3 KV to 36 KV and is used to manage and protect electrical systems. Types of MV Switchgear Includes metal enclosed indoor and outdoor switchgear, and outdoor switchgear without metal enclosures. Short Circuit Current Interrup

What is a Residual Current Circuit Breaker? RCCB Definition A Residual Current Circuit Breaker (RCCB) is defined as a safety device that detects and interrupts a circuit when there is a leakage current to the ground. Working Principle An RCCB operates based on Kirchhoff’s current law, which states t