Search

Premium Membership

Save 50% on all courses at the EEP Academy with the Enterprise Plan and study specialized technical articles, papers & video courses.

Technical Articles

Transformers

Sources of Sound in Transformers

Unlike cooling-fan or pump noise, the sound radiated from a transformer is tonal in nature, consisting of even harmonics of the power frequency. It is generally recognized that the predominant… Read more

Nov 09, 2011 | By Edvard

Sources of Sound in Transformers
Biomass Energy

Biodiesel – Myths and Facts

Few facts you most probably know already, but never the less to mention: A clean burning alternative fuel, produced from domestic, renewable resources such as plant oils, animal fats, used… Read more

Nov 05, 2011 | By Bipul Raman

Biodiesel cycle
Protection

Transformer Winding Faults

A fault on a transformer winding is controlled in magnitude by the following factors: Source impedance Neutral earthing impedance Transformer leakage reactance Fault voltage Winding connection Several distinct cases arise… Read more

Nov 02, 2011 | By Edvard

transformer-winding-faults-front
Energy and Power

The Importance of the Correct PPE

Whilst awareness of the dangers of arc flash has continued to increase over the last few years, the number of incidents that are still occurring on a daily basis are… Read more

Oct 29, 2011 | By cgoulds

Electrical safety
Transformers

Transformer Testing Techniques

Cant see this video? Click here to watch it on Youtube. Substation transformers can range from the size of a garbage can to the size of a small house; they… Read more

Oct 27, 2011 | By Edvard

Electronics

Power Semiconductor Device – Transistor

Power transistors are used in applications ranging from a few to several hundred kilowatts and switching frequencies up to about 10 kHz. Power transistors used in power conversion applications are… Read more

Oct 27, 2011 | By Edvard

NEC 2SD555 NPN POWER TRANSISTOR VCB=400V 10A 200W TO-3
Low Voltage

How Low-Voltage Air Circuit Breaker Works?

A low-voltage circuit breaker is one which is suited for circuits rated at 600 volts or lower. One of the most commonly used low-voltage air circuit breakers is the molded… Read more

Oct 23, 2011 | By Edvard

air circuir breakers - how they works
Electronics

Insulated-Gate Bipolar Transistor (IGBT)

The IGBT has the high input impedance and high-speed characteristics of a MOSFET with the conductivity characteristic (low saturation voltage) of a bipolar transistor. The IGBT is turned on by… Read more

Oct 21, 2011 | By Edvard

IGBTs classified as punch-through (PT) and nonpunch-through (NPT) structures


Learn How to Design Power Systems

Learn to design LV/MV/HV power systems through professional video courses. Lifetime access. Enjoy learning!

Subscribe to Weekly Newsletter

Subscribe to our Weekly Digest newsletter and receive free updates on new technical articles, video courses and guides (PDF).
Design a safer and energy-efficient medium voltage installation