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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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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 &...
Basic Electrical

Switch Types & their Working Principle

Table of ContentsWhat is Switch?Characteristics of SwitchesMechanical SwitchesTypes of Mechanical Switches1). SPST - Single Pole Single Throw Switch2). SPDT - Single Pole Double Throw Switch3). DPST - Double Pole Single Throw Switch4). DPDT - Double Pole Double Throw Switch5). Pressure Switch6). Toggle Switch7). Limit...
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Batteries

Battery Testing Procedure

Battery Testing Battery testing comprises measuring the voltage, capacity, & other parameters of the battery with the...
Switchgear

RCD (Residual Current Device) Testing Procedure

What is an RCD? RCD - Residual Current Device A Residual Current Device (RCD) is a...
Protection

How to Protect Capacitor Bank?

What is a Capacitor Bank? A capacitor bank stores energy by connecting capacitors in series...
Electrical Calculators

Line Current Calculator

Calculator Use the calculator to find the line current by entering the total phase current...
Basic Electrical

What is the difference between KW and KVA?

According to the International System of Units, power is measured in kVA and kW.  The...
Electrical Notes & Articles

DC Motor No-Load Run Test Procedure and Checklist

What is DC Motor? A DC motor is a device that transfers electrical energy from...
Switchgear

SF6 Circuit Breaker: Working Principle, Construction, and Types

SF6 circuit breakers are employed for their  Table of ContentsWhat is an SF6 Circuit Breaker?Working...
Electric Motors

What is a Stepper Motor? How does it work?

What is a Stepper Motor? A stepper motor is an electric motor that works on...
Transformers

Losses in a Transformer

The power delivered to the transformer's input terminal must match the power delivered to...
Electrical How to

Why DC Series Motor should not be started at No Load?

What is the DC series motor? A DC series motor connects the armature & field windings in...
Protection

What is a Surge Arrester? Explain its Working Principle and Types

What is a Surge Arrester? A surge arrester, as the name implies, is a device...
Electrical Interview

Electrical Interview Questions – Part 5

1). What is meant by Regenerative Braking? When a running motor's supply is shut off,...
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Latest articles

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...
Switchgear

RCD (Residual Current Device) Testing Procedure

What is an RCD? RCD - Residual Current Device A Residual Current Device (RCD) is a...
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