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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 Interview

Marine Electrical Systems: Q&A

1). What is the term under-voltage protection? It protects the breaker from being accidentally closed, or...
Basic Electrical

Current Measurement Using Voltage DAQ Systems

Table of ContentsInput ImpedanceData Acquisition SystemsElectrical ShuntCalculationsMeasurement of 4–20 mA Input using Voltage Input...
Excel Tools

Essential Electrical & Instrumentation Excel Tools

Electrical Engineering Excel Toolkit Electrical Excel tools are a number of spreadsheets that are meant...
Transformers

Preventive Maintenance Checklist for Transformers

This checklist provides a high-level perspective on the many preventative maintenance activities that have...
Transformers

Different types of Cooling Systems (Methods) in Transformers and its Applications

Table of ContentsDifferent Electrical Transformer Cooling MethodsAir CoolingOil Cooling An electromagnetic static device called a...
Troubleshooting

Troubleshooting MCC and Starter Panels: Common Faults and Fixes (Diagnosis)

Table of ContentsMethods for the Fault Diagnosis1). Phase indicator2). Outgoing Terminal3). Metering Circuits4). Ammeter5)....
Electrical Notes & Articles

Cable Tray Dimensions and Specifications as per NEC

Table of ContentsPurpose of Cable TraysCable Tray norms as per National Electrical Code (NEC)Number...
Protection

Understanding the Operational Modes of Industrial UPS Systems

Table of ContentsHow many modes are there in UPS?Single line diagram of UPSNormal operation...
Switchgear

A Step-by-Step guide to run a Three-Phase Motor on Single-Phase Supply using VFD

Table of ContentsConverting Three-Phase Motors: A VFD Solution for Single-Phase PowerFunction of VFDRequired ComponentsHow...
Protection

Understanding essential components of an UPS System

Table of ContentsWhat are all the components of UPS?RectifierInverterWhat is IGBT in UPS system?Static...
Protection

What is UPS? – Its Importance and Applications in Various Industries

Table of ContentsWhat is the uninterrupted power supply?Single line diagram of UPS systemWhat is...
Troubleshooting

Troubleshooting Circuit Breaker Problems: Diagnosis and Solutions

Table of ContentsWhat is a Circuit Breaker?Common Circuit Breaker Problems: Causes and Solutions1). Miswiring2)....
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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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