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Rabert T

As an electrical engineer with 5 years of experience, I focus on transformer and circuit breaker reliability in 110/33-11kV and 33/11kV substations. I am a professional electrical engineer with experience in transformer service and maintenance. I understand electrical principles and have expertise troubleshooting, repairing, and maintaining transformers, circuit breakers, and testing them.
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Electrical Interview

Power Electronics Interview Questions

1). What is a Power Amplifier? A power amplifier amplifies weak signal until it has enough power to drive an output device, such as a loudspeaker. 2). What are the Characteristics of a Power Amplifier? Impedance matching to provide maximum power to load. Power transistors are required to tolerate...
Transformers

Vector Group of Transformer

The Vector Group of a transformer is an essential parameter that determines the phase difference and wire configuration of the transformer.  Table of ContentsWhat is Vector Group of Transformer?Phase Displacement between HV & LV WindingsPhase Shift of TransformerWhy is Vector Group Important?Common Vector Groups &...
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Electric Motors

Preventive Maintenance Procedure for High-Tension (HT) Motors

Table of ContentsHT Motor Preventive MaintenanceRequired Test EquipmentSpare PartsSafetyBefore The TestProcedureMotor ChecklistFeeder Checklist Preventive maintenance...
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What is Water Trees & Electrical Trees in cables?: Exploring the Causes and Consequences of Cable Insulation Failure

Table of ContentsWhat is "Treeing" in High-Voltage (HV)?What is meant by Water Tree?What is...
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Uninterrupted Power Source (UPS) Testing Evaluation

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Excel Tools

Transformer Protection with IDMT Relays (Over Current / Earth Fault / Differential)

Table of ContentsFunction of IDMT RelaysImportant FactorsIDMT CharacteristicsSettings for Earth FaultsCoordinationTesting and CommissioningSignificance of...
Electric Motors

How to select Motor for Optimal Performance Speed, Power, and Torque?

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How to interpret Technical Data Sheet for Low Voltage (LV) Switchgear?

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General requirements for the installation of UPS systems

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Safety Assessment: Earth Fault Loop Impedance Testing

Table of ContentsWhat is Earth Fault Loop Impedance Test?Why to do Earth Fault Loop...
Software

ETAP: Electrical Engineering Software for Power Systems Analysis and Design

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Electric Motors

Automated and Manual Motor Control with VFD and DOL Starter

Table of ContentsDOL Starter & VFDComponentsWiring a VFD and a DOL Starter for Automatic/Manual...
Software

Free Online Tool for Electric Circuit Schematic Creation

An electric circuit may be represented by a diagram by employing an array of...
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Electrical Interview

Power Electronics Interview Questions

1). What is a Power Amplifier? A power amplifier amplifies weak signal until it has...
Transformers

Vector Group of Transformer

The Vector Group of a transformer is an essential parameter that determines the phase...
Basic Electrical

Switch Types & their Working Principle

Table of ContentsWhat is Switch?Characteristics of SwitchesMechanical SwitchesTypes of Mechanical Switches1). SPST - Single...
Batteries

Battery Testing Procedure

Battery Testing Battery testing comprises measuring the voltage, capacity, & other parameters of the battery with the...
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