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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 How to

HT Transformer & DG Works BOQ with Checklist

A Bill of Quantities (BOQ) defines, quantifies & prices every component of work for an HT electrical installation.  This BOQ covers the 11 kV power intake, distribution transformers and diesel generator (DG) sets which is the core of any substation.  It serves as the binding technical...
Electrical Calculators

Earth Fault Loop Impedance Calculator

The Earth Fault Loop Impedance (EFLI) calculator is utilized to determine the maximum permissible earth fault loop impedance (Zs) of an electrical circuit.  Calculator Earth Fault Loop Impedance Calculator Uo, Nominal Phase Voltage (V) Circuit Breaker Size (A) Select Circuit Breaker Type Type B Type C Type D Breaker Characteristics: Type B → Ia...
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Electrical Procedures

132 kV Busbar Contact Resistance Test: Method Statement

What is Contact Resistance? Contact resistance is the resistance to the current flow caused by surface...
Transformers

7 Causes of Power Transformer Failures

Power transformers are essential components of the electrical system. Their failure not only damages...
Electrical Interview

Electrical Testing Interview Questions

1). What is Insulation Resistance (IR) Testing? IR testing measures the resistance between electrical conductors...
Electrical Calculators

Transformer Inrush Current Calculator

Calculator Click here for more Electrical Calculators What is Transformer Inrush Current? Transformers experience inrush current when powered....
Electrical How to

Oil Filled Transformer Testing Checklist

Oil-filled transformers are essential components of power systems, enabling voltage transformation & electrical isolation.  Regular...
Electrical Interview

Electrical Drives and Controls Interview Questions

1). What is Switched Reluctance Motor? The switched reluctance motor is a double salient and...
Electrical Procedures

LT Protection Relay Testing Procedure

Low Tension (LT) protection relays protect electrical systems by finding abnormal conditions such as  Table...
Electrical Calculators

CT Burden Resistor Calculator

Calculator Click here for more Electrical Calculators What is a CT Burden Resistor? A CT burden resistor is...
Transmission

Why do we use 3-Phase Systems instead of 1-Phase & 2-Phase Systems?

What is a “Phase” in Electrical Systems? In alternating current (AC) power systems, a phase...
Electrical Calculators

Line To Phase Voltage Calculator

Calculator Click here for more Electrical Calculators A Line-to-Phase Voltage Calculator calculates the voltage between a line...
Distribution

What causes DC System Failures in Substations?

In any substation, the DC distribution system serves as the foundation for Table of ContentsDC...
Preventive Maintenance

Functional Testing for Electrical Systems

To ensure an electrical installation's safety, performance, and reliability, an entire checklist of functional...
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Electrical How to

HT Transformer & DG Works BOQ with Checklist

A Bill of Quantities (BOQ) defines, quantifies & prices every component of work for...
Electrical Calculators

Earth Fault Loop Impedance Calculator

The Earth Fault Loop Impedance (EFLI) calculator is utilized to determine the maximum permissible...
Electrical Calculators

Battery Sizing Calculator

A Battery Size Calculator is an important electrical engineering online calculator tool that assist...
Electrical Calculators

Electrostatic Capacitance Calculator

The Electrostatic Capacitance Calculator is an online calculator tool that enables instant conversion between...