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Technical Articles

Energy and Power

Siemens – Busway Purpose and Definition

Commercial and industrial distribution systems use several methods to transport electrical energy. These methods may include heavy conductors run in trays or conduit. Once installed, cable and conduit assemblies are… Read more

Dec 23, 2010 | By Edvard

Electrical power can be supplied to any area of a building by connecting standard lengths of busway.
High Voltage

Use Of Vacuum As A Breaking Medium

SF6 and vacuum are the two most modern breaking techniques in the fields of Medium Voltage (from 1 to 52 kV) and High Voltage (> 72.5 kV). They appeared in… Read more

Dec 22, 2010 | By Edvard

Fig-1 Evolution Of MV Circuit Breaker Markets In Europe
Power Substation

Establishing New Power Substation

The construction of new substations and the expansion of existing facilities are common place projects in electric utilities. However, due to the complexity, very few utility employees are familiar with… Read more

Dec 20, 2010 | By Edvard

Power Switchyard
Energy and Power

Characteristics of Lightning Strokes

Lightning, one of Mother Nature’s most spectacular events, started to appear significantly demystified after Franklin showed its electric nature with his famous electrical kite experiment in 1752. Although a great… Read more

Dec 19, 2010 | By Edvard

Characteristics of Lightning Strokes
High Voltage

Basics Of Subtransmission Systems

Subtransmission systems are those circuits that supply distribution substations. Several different subtransmission systems can supply distribution substations. Common subtransmission voltages include 34.5, 69, 115, and 138 kV. Higher voltage subtransmission… Read more

Dec 17, 2010 | By Edvard

Transmission Lines
Maintenance

Maintenance for UPS systems

Maintenance of the UPS consists of preventive and corrective maintenance. Preventive maintenance consists of a scheduled list of activities. Performing these activities keeps the UPS in good working order and… Read more

Dec 16, 2010 | By Edvard

Maintenance for UPS systems
Solar Power

Solar Power Tower

Solar power towers generate electric power from sunlight by focusing concentrated solar radiation on a tower mounted heat exchanger (receiver). The system uses hundreds to thousands of sun-tracking mirrors called… Read more

Dec 15, 2010 | By Edvard

Electric Motor

Keeping Motor Windings Dry

Special provision should be made to protect motor windings which operate in a damp atmosphere or are subject to condensation of moisture when out of service for long periods. Motors… Read more

Dec 14, 2010 | By Edvard

AC motor stator windings
Low Voltage

Forms of Separation (2) – Fundamentals

In accordance with the Standard, separation of the various elements of an Assembly: busbars, functional units, terminals, can be claimed providing one or more of the following criteria are met:… Read more

Dec 13, 2010 | By Edvard

Forms Of Separation - Introduction
Cables

Shielding Of Power Cables

Medium and high-voltage power cables, in circuits over 2000 volts, usually have a shield layer of copper or aluminum tape or conducting polymer. If an unshielded insulated cable is in… Read more

Dec 12, 2010 | By Edvard

Shielding of power cables
Hydropower

Hydro vs. Wind vs. Solar Power?

Matthew Stein, author of When Technology Fails: A Manual for Self-Reliance, Sustainability, and Surviving the Long Emergency wrestles with that very question in his book. Here’s an excerpt: No single… Read more

Dec 11, 2010 | By Edvard

Hydro vs. Wind vs. Solar Power?
Energy and Power

Sources Of The Electric Energy – Generation

There are a number of ways to produce electricity, the most common commercial way being the use of a synchronous generator driven by a rotating turbine. The combination is called… Read more

Dec 10, 2010 | By Edvard

Wind Power Turbine Diagram


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