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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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Excel Tools

Optimizing Power Systems for Large Motor Startup: Transformer Sizing and Voltage Drop Analysis

Table of ContentsTransformer Sizing ConsiderationsVoltage Drop of a Transformer (in Secondary)Motor Code Determining the size...
Switchgear

Low Voltage Cubicle Switchboard (LVSB) Assessment and Testing Protocol

Table of ContentsVisual InspectionSite Inspection before Incoming Supply Connection1). Dielectric Test2). Insulation Test3). Secondary...
Protection

Megger Testing: Ensuring Electrical Wiring and Cable Integrity

Table of ContentsWhat is meant by Megger testing?General Procedure for the Megger TestMechanism of...
Protection

Transformer-Based vs Transformer-less UPS: Making the Right Choice for Power Needs

Table of ContentsTransformer-Based UPSWorking of a Transformer UPSAdvantages of Transformer-Based UPSTransformer Less UPSWorking of...
Electrical Interview

VFD Interview Questions – Comprehensive Brochure for Engineers

1). What is a VFD, and what does it do in an electrical system? A motor...
Utilities

Telemetry and Remote Operations System (SCADA)

A control system architecture called SCADA (supervisory control and data acquisition) uses computers, networked...
Drives

VFD-Integrated Braking System- DC Injection Braking

Table of ContentsVFD DC Injection BrakingFunction of VFD's DC Injection BrakingDC injection braking outperforms...
Electrical Procedures

Surge Suppression System Datasheet

Table of ContentsRated Voltage8/20μs Maximum Discharge Voltage0.5μs 10kA Maximum Resistance Current (IR)Switching Surge Maximum...
Transmission

Essential Components of an Electrical Substation

Table of ContentsComponents of Electrical SubstationsPower Transformer for Electrical SystemsCurrent TransformerPotential TransformerConductorsInsulatorsIsolatorsBus BarsLightening ArrestersCircuit...
Electrical Interview

ESSENTIAL ELECTRICAL INTERVIEW QUESTIONS FOR REFINERY PROFESSIONALS

1). How do refinery hazardous area categories and electrical systems differ? According to the chance...
Electric Motors

Sizing of Capacitor Bank across Motor Terminals

What is Capacitor Bank? Table of ContentsWhat is Capacitor Bank?Capacitor bank in motorAdvantages of Capacitor...
Electrical Procedures

Metal-Clad Switchgear: Testing and Commissioning Procedures

Table of ContentsWhat is Metal-Clad Switchgear?Metal-Clad Switchgear Testing and CommissioningRequired Testing EquipmentTesting ProcedureVisual inspection...
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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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