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Technical Articles

Transformers

Transformer Losses Standards

Unlike many countries around the world, Europe has no mandatory standard on energy efficiency of distribution transformers. The two main documents which describe losses in transformers are: the European Standard… Read more

Jan 07, 2011 | By Edvard

Transformer Losses Standards
High Voltage

SF6 gas as insulating and arc-quenching medium

Sulphur hexafluoride gas (SF6) is employed as insulation in all parts of the installation, and in the circuit-breaker also for arc-quenching. SF6 is an electronegative gas, its dielectric strength at… Read more

Jan 06, 2011 | By Edvard

Transformers

Parallel Operation Of Transformers

Most transformers installed in parallel have the same kVA, turn ratios, and impedances, which can make it difficult for power engineers in industrial and commercial facilities to understand circulating currents… Read more

Jan 05, 2011 | By Edvard

Parallel transformers - Siemens
Maintenance

Maintenance Of SF6 Gas Circuit Breakers

Sulfur Hexafluoride (SF6) is an excellent gaseous dielectric for high voltage power applications. It has been used extensively in high voltage circuit breakers and other switchgears employed by the power… Read more

Jan 04, 2011 | By Edvard

Maintenance Of SF6 Gas Circuit Breakers
Cables

Comparison Of Cable Insulating Materials

Electrical insulation materials are employed over the metallic conductors of underground cables at all voltage ratings. Polymeric materials are employed as the insulation, but the nature of the polymer may… Read more

Jan 03, 2011 | By Edvard

XLPE Insulated Power Cable
Energy and Power

Do You Understand What Is Electric Shock?

Electric current passing through the body, particularly alternating current at power frequencies of 50 Hz and 60 Hz, may disrupt the nervous system, causing muscular reaction and the painful sensation… Read more

Jan 02, 2011 | By Edvard

Electric shock danger sign
Energy Efficiency

Energy Efficency In Hospitals – Cogeneration (6)

Cogeneration is combined generation of heat and electricity. The advantage of cogeneration is that it enables the heat released by electricity generation to be used. The most well-known form of… Read more

Jan 02, 2011 | By Edvard

Hospital HVAC - Cogeneration
Low Voltage

Maintenance Of Molded Case Circuit Breakers (MCCB)

The maintenance of circuit breakers deserves special consideration because of their importance for routine switching and for protection of other equipment. Electric transmission system breakups and equip­ment destruction can occur… Read more

Jan 01, 2011 | By Edvard

Molded Case Circuit Breakers (MCCB)
Low Voltage

Maintenance Of Low Voltage Circuit Breakers

The deterioration of low voltage circuit breaker is normal and  this process begins as soon as the circuit breaker is installed. If  deterioration is not checked, it can cause failures… Read more

Dec 31, 2010 | By Edvard

Maintenance Of Low Voltage Circuit Breakers
Wind Power

Siemens Wind Turbine SWT-2.3-82

The SWT-2.3-82 turbine is the classical workhorse for utility-scale wind turbine projects, designed on the basis of our unique experience from more than 25 years of leading-edge design and construction… Read more

Dec 30, 2010 | By Edvard

Siemens Wind Turbine SWT-2.3-82
News

Happy Holidays

With 2010 behind us, EEP wishes a very safe and warm new year to you and yours. Even in a very slow economic environment we at EEP have grown, mainly… Read more

Dec 30, 2010 | By Edvard

Happy New Year
IEC Standards

Advantages Of IEC 61850

One of the significant challenges that substation engineers face is justifying substation automation investments. The positive impacts that automation has on operating costs, increased power quality, and reduced outage response… Read more

Dec 29, 2010 | By Edvard

Advantages Of IEC 61850 Standard
Energy Efficiency

Energy Efficency In Hospitals – The Steam

Steam is used a great deal in hospitals: it permits high energy densities and enables large amounts of energy to be moved around easily. Steam can easily be generated from… Read more

Dec 28, 2010 | By Edvard

Energy Efficency In Hospitals - The Steam


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