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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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Electrical Procedures

Distribution Panel Board Testing & Commissioning Checklist

Table of ContentsElectrical Testing and Distribution Panel CommissioningNecessity of Testing and CommissioningTools & Equipment’s...
Electrical Formulas & Equations

Electrical – Maximum Demand Formula

The fixed charges are charged by the electricity provider based on the maximum electrical...
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Star-Delta Control of Motor with the use of PLC

This post discusses the significance of regulating starting current & torque while starting a motor....
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Essential Components of an Electrical Substation

Table of ContentsComponents of electrical substations1). Electrical Transformer2). Instrument Transformera). Voltage Transformer (Potential Transformer)b)....
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BLDC Motor Speed Control with RPM Display

Table of ContentsWhat is a BLDC Motor?OutlineBLDC Motor Speed Control Block Diagram with RPM...
Electric Motors

Maintenance of an Induction Motor

Table of ContentsRestorative MaintenancePreventive MaintenanceSafety Precautions of Induction MotorOverload Protection of Induction MotorProtect against...
Electric Motors

How does an alternator work?

Table of ContentsWhat is an alternator?Basic Principle of an alternatorComponents of an alternator1). Voltage...
Renewable Energy

Solar Power Monitoring and Control

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Transformer Short Circuit Current Calculation

Electrical power distribution networks are subject to experiencing short circuits, which are often referred...
Electrical Notes & Articles

Factors for Power Cables Selection

In order to understand problems with cable systems, knowledge of cable architecture, properties, and...
Electrical Notes & Articles

Difference between PLC & HMI

Table of ContentsWhat is meant by a PLC?What is PLC Ladder Logic?What is meant by HMI?Difference Between...
Electrical How to

How does Single Line Diagram (SLD) work in Electrical Systems?

Table of ContentsWhat are Single Line Diagrams (SLD) and how are they used?Importance 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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