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Monthly Archive for: «October, 2013»

Energy and Power

Natural Ventilation Of Power Substation

The operation of a system of natural ventilation is as a result of a decrease in air density as its temperature is raised due to the heat gain from various… Read more

Oct 18, 2013 | By Edvard

Natural Ventilation Of Power Substation
Energy and Power

General Arrangement of Hydropower Powerhouse

In general, a powerhouse in hydropower plant may be divided into three areas: The main powerhouse structure, housing the generating units and having either separate or combined generator and turbine… Read more

Oct 16, 2013 | By Edvard

General Arrangement of Hydropower Powerhouse
Energy and Power

An Overview Of Grounding System (Grounded)

Continued from technical article: An Overview Of Grounding System (Ungrounded) Solidly grounded system Resistance grounded system Reason for resistance grounding System earthing at EHV level Let us assume that R… Read more

Oct 14, 2013 | By Asif Eqbal

An Overview Of Grounded Grounding System
Energy and Power

An Overview Of Grounding System (Ungrounded)

Ungrounded system Derivation of current expression in ungrounded system Advantages & disadvantages of ungrounded system Concept of effective and non-effective grounding Coefficient of earthing and earth fault factor Before 1950… Read more

Oct 11, 2013 | By Asif Eqbal

An Overview Of Grounding System (Ungrounded)
Energy and Power

4 General Safety Practices To Remember ALWAYS!

In addition to the safety precautions (access to HV enclosures and work on HV electrical equipment) the following general safety practices should be ALWAYS observed for work on electrical equipment…. Read more

Oct 09, 2013 | By Edvard

4 General Safety Practices To Remember ALWAYS When Working On Electrical Equipment
Electrical Lectures

Heat vs. Current in a Resistor

It is converted from one form to another. One of the most familiar forms of energy is heat. When a current (I) is forced through a resistor (R) by applying… Read more

Oct 04, 2013 | By Edvard

Heat vs. Current in a Resistor (photo by Karen Blaha via Flickr)
Electrical Lectures

What Is a Good Ground Resistance Value?

The goal in ground resistance is to achieve the lowest ground resistance value possible, that makes sense economically and physically, when contacting the earth, also known as the soil/ground rod… Read more

Oct 02, 2013 | By Edvard

What Is a Good Ground Resistance Value?


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