Converting a hex to decimal is not difficult if you thoroughly understand what is mentioned on this page. The process of converting any hexadecimal number to its decimal or binary equivalent is a tricky one. If you are able to establish some rules you are lucky. But this is only …

Read More »## BCD – Decimal to Binary & Binary to Decimal Conversion Methods

What is decimal number system? The decimal number system has base 10. It uses the digits 0 to 9. What is number system? It is a system for representing numeric values or quantities using different symbols i.e. digits. What does base or radix mean? The number of digits (symbols) a number system …

Read More »## Cable Sizing & Voltage Drop Calculations Formula

Cable sizing is done based on three parameters: Load current, Short circuit current carrying capacity, Voltage drop. Below are given simple steps for performing cable sizing calculations. Step 1 – Calculate Load Current: Calculate the load current from the load data available. Formula is: I=Load (in kW)/(sqrt(3)V(in kV)p.f) (A) The …

Read More »## How to Wire a Contactor and Overload – Direct Online Starter

## Types Of Insulators

## Motor Starter and Controller Types

## Testing and Commissioning Requirements for Switchgear

Before starting the switchgear testing an approved testing & commissioning engineer should be appointed in order to thoroughly review all the applicable drawings and specification, and to become totally familiar with all systems and the design intent. Experience certificate of T&C engineer to be submitted for client approval and test and …

Read More »## Air Blast Circuit Breaker | Construction & Operating Mechanism

A circuit breaker is a mechanical switching device, capable of making, carrying and breaking currents under normal circuit conditions. It is also capable of making and carrying currents for a specified time and breaking currents under specified abnormal circuit conditions, such as those of a short circuit. Air Blast Circuit Breaker …

Read More »## What is On Load Tap Changer OLTC in Transformers

A tap changer is a device fitted to power transformers for regulation of the output voltage to required levels. On-load tap-changers (OLTCs) are indispensable in regulating power transformers used in electrical energy networks and industrial applications. OLTC changer alters the turn ratios of the transformer on the system by altering …

Read More »## Dry Type Substation Transformers Technical Features

Most transformer companies offer standard engineered products only, and ask the users to make it fit their applications. Also these companies can engineer the product both electrically and mechanically to fit virtually any application. Typically companies employ three winding styles for Special Design Dry Type transformers, based on kVA, voltage and …

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