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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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Transmission

Substations – Power Grid Integration

Table of ContentsWhat  is a Substation?An Electrical Substation's Single-Line DiagramHow does a substation operate?Primary...
Electrical Procedures

Current Transformer Testing Procedure

Table of ContentsWhat is a Current Transformer?Testing of Current Transformer1). Insulation Resistance Test2). Winding...
Protection

Insulation Resilience Coordination in Power System

Table of ContentsFundamental Terms in Electrical Power System1). Nominal System Voltage2). Maximum System Voltage3). Earthing...
Electrical Interview

Electrical Interview Questions in Automotive and Aerospace

01). Explain the fundamentals of electrical power generation & distribution in an aerospace. All aerospace electrical...
Transformers

Tan Delta & Power Factor Characterization

Table of ContentsWhat is Tan Delta test?Fundamentals of the Tan Delta TestTan Delta Testing...
Electrical Vehicles

Novel (New) Universal Charger supports 120-900V EV Batteries

Table of ContentsVariable power ratingsBoost–Buck Converter ConfigurationAn OverviewHow does the charger's design ensure the...
Drives

Commissioning of a VFD Control Panel

Table of ContentsProcedure for commissioning a VFDWhy is VFD commissioning important?Instruments needed for commissioning...
Distribution

SCADA Application in Power System Automation

Table of ContentsPower System AutomationFunction of SCADA in the Electrical Distribution SystemControl and Monitoring...
Generators

What is Generator Protection?

Table of ContentsTypes of Generator FaultsInternal Fault Types in a GeneratorExternal Fault Types in...
Electrical Interview

Relay Interview Questions

1). What is an inverse time over current relay's characterizing feature? The length of time...
Drives

Soft Starter requirements in Industrial motors

Table of ContentsMotor StarterWhat is a Soft Starter?Soft Starter DiagramWorking Principle of Soft StarterAdvantages...
Drives

Principle of setting VFD parameters

Table of Contents1). Acceleration/Deceleration Time2). Torque Boosting3). Protection against electronic Thermal Overload4). Frequency Limitation5)....
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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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