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Archive: Category «Electrical Lectures»

Electrical Lectures

Practical Considerations of Transformer Heat and Noise

In addition to unwanted electrical effects, transformers may also exhibit undesirable physical effects, the most notable being the production of heat and noise. Transformer noise is primarily a nuisance effect,… Read more

Jul 31, 2015 | By Edvard

Practical Considerations of Transformer Heat and Noise
Electrical Lectures

What can a PLC do? Why do we use them?

“PLC” means “Programmable Logic Controller”, that’s clear. The word “Programmable” differentiates it from the conventional hard-wired relay logic. It can be easily programmed or changed as per the application’s requirement…. Read more

Jul 15, 2015 | By Edvard

What can a PLC do? Why do we use them? (on photo: SIEMENS PLC Simatic S7-1500; credit: totallyintegratedautomation.com)
Electrical Lectures

4 Main Means For The Generation Of Reactive Power

The four main means for the generation of reactive power are: synchronous alternators, synchronous compensators (SC), static var compensators (SVC) and banks of static capacitors. Contents Synchronous alternators Synchronous compensators… Read more

Jun 29, 2015 | By Edvard

4 Main Means For The Generation Of Reactive Power
Electrical Lectures

Back To School – Let’s Calculate Current I3

Referring to the following circuit, calculate direct current I3: Using Kirchhoff’s laws; Using nodal analysis; Applying Thévenin’s theorem at nodes A and B. – KCL stands for Kirchhoff’s Current Law… Read more

Apr 10, 2015 | By Edvard

Electrical Lectures

Miniature Circuit Breakers (MCBs) For Beginners

This technical article focuses on the widely used miniature circuit breakers rated for 240 V or less. These are smaller and lower-rated versions of industrial-grade molded-case circuit breakers rated for… Read more

Jan 26, 2015 | By Edvard



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