Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

Shunt Reactor DefinitionA shunt reactor is used to neutralize excess capacitive reactive power on long electrical transmission lines.Core of Shunt ReactorShunt reactors typically use a gapped core, built from Cold Rolled Grain Oriented Silicon Steel to cut down on hysteresis losses. The steel sheets are laminated to lessen eddy current losses. Radial gaps, placed by high electrical modulus spacers between lamination packets, enhance efficiency. Typically, a 5-limb, 3-phase core structure in a sh

What is Electrical Reactor?Electrical Reactor Definition: An electrical reactor, also known as a line reactor or choke, is a coil that creates a magnetic field to limit current rise, reducing harmonics and protecting electrical drives from power surges.Types of Electrical or Line ReactorsA reactor has many roles to play in an electrical power system. The reactors are normally classified according to their modes of application. Such as: Shunt Reactor Current Limiting and Neutral Earthing Reactor

Switchable Capacitor Bank DefinitionA switchable capacitor bank is defined as a set of capacitors that can be turned on or off to manage reactive power in an electrical system.PurposeThe main purpose of a switched capacitor bank is to improve power factor and voltage profile by balancing the inductive reactive power in the system.Reactive Power ManagementSwitched capacitor banks help in reducing overall reactive power, which enhances system efficiency and stability.Automatic ControlThese banks c

Shunt Capacitors DefinitionShunt capacitors are devices installed in electrical systems to improve power factor by compensating for reactive power.Distribution System Capacitor BankIn distribution feeder capacitor bank are installed on pole to compensate reactive power of that particular feeder. These banks are normally mounted on one of the poles on which the distribution feeders run. The mounted capacitor banks are normally interconnected with over head feeder conductors by means of insulated

Types of Capacitor Bank DefinitionCapacitor banks are defined as groups of capacitors connected together to improve the power factor in electrical systems. Externally fused capacitor bank. Internally fused capacitor bank. Fuse less capacitor bank.Externally Fused Capacitor BankIn this type of capacitor bank, each capacitor unit has an external fuse. If a unit develops a fault, its external fuse will blow. This disconnection allows the bank to continue operating without interruption. These capaci

Capacitor Bank DefinitionA capacitor bank is defined as a group of capacitors used to store and release electrical energy in a power system, helping to improve power quality.System Voltage ToleranceCapacitor banks must operate smoothly at up to 110% of the rated peak phase voltage and 120% of the rated RMS phase voltage.KVAR RatingCapacitor unit are normally rated with its KVAR ratings. Standard capacitor unit available at market, are typically rated with either of following KVAR rating.50 KVAR,

What is a Shunt Capacitor?Shunt Capacitor DefinitionA shunt capacitor is defined as a device used to improve power factor by providing capacitive reactance to counteract inductive reactance in electrical power systems.Power Factor CompensationShunt capacitors help improve the power factor, which reduces line losses and improves voltage regulation in power systems.Capacitor BankThe capacitor reactance is generally applied to the system by using static capacitor in shut or series with system. Inst

What is What is Synchronous Condenser?Synchronous Condenser DefinitionA synchronous condenser is defined as a synchronous motor running without a mechanical load, used to improve the power factor of power systems.Improving Power FactorSuppose due to a reactive load of the power system the system draws a current Ithree phase synchronous motorL from the source at a lagging angle θL in respect of voltage. Now the motor draws a IM from the same source at a leading angle θM.Now the total current draw

What is the Measurement of Insulation Resistance?Insulation Resistance DefinitionInsulation resistance is defined as the ratio of applied direct voltage across an insulation to the current through it.Importance of Measurement Direct-indicating ohmmeter with hand driven dc generator. This is locally known as hand driven megger since Megger is one of the best known manufacturer of this instrument. Direct-indicating ohmmeter with motor driven dc generator. This is locally known as motorized megger.

What is Electrical Insulator Testing?Electrical Insulator DefinitionAn electrical insulator is defined as a device that resists the flow of electric current, providing protection and ensuring safety in electrical systems.Causes of Insulator FailureCracking, defective materials, porosity, improper glazing, flashover, and mechanical stress are primary causes of insulator failure.Testing of InsulatorsFlashover tests of insulatorPower Frequency Dry Flashover Test of Insulator First the insulator to