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Archive: Category «Energy and Power»

The Need for Breaker Failure Protection

Circuit breakers are strategically located in power systems to connect circuits and electrical apparatus. Circuit breakers are commanded to open and close by protection and control systems that monitor conditions on the power system. Protection… Read more

Jan 01, 2012 | Edvard

Eaton - Magnum circuit breaker

What is the resonance phenomena?

The use of both capacitive and inductive devices in distribution systems leads to resonance phenomena, resulting in extremely high or low impedance values. These variations in impedance modify the current and voltage in the distribution… Read more

Dec 09, 2011 | Edvard

What is the resonance phenomena?

Flexible AC Transmission System – What and Why?

Flexible AC Transmission System (FACTS) have been evolving to a mature technology with high power rating. This technology has wide spread application, became a top rate, most reliable one, based on power electronics. The main… Read more

Dec 05, 2011 | Edvard

Flexible AC Transmission System - What and Why?

Transient Voltage Surge Suppressors

Transient Voltage Surge Suppressor (TVSS) is a device that every data center or mission critical facility should have. Why should every data center have one and what does it do you ask? The purpose of… Read more

Dec 01, 2011 | Edvard

Transient voltage surge suppressors - ABB (OVR series)

Fire Properties Of Cables

This is an area of increasing public and legislative concern, and therefore of increasing interest to engineers. There have been major advances in the fire performance of cables in recent years, and table below lists… Read more

Nov 21, 2011 | Edvard

KBS cable coating fire protection

Partial Discharge Testing On Power Cable Systems

Partial discharge measurement is an important method of assessing the quality of the insulation of power cable systems, particularly for extruded insulation materials. This article considers partial discharge from two points of view: the measurement… Read more

Nov 18, 2011 | Edvard

On-Line Partial Discharge Testing 27.6 kV XLPE Cable

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