By Hans De Keulenaer / Published on Fri, 2008-05-23 15:59
By A Broshi
Power Quality monitoring has become a standard task in electrical network management.
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By Michele De Witte / Published on Tue, 2008-02-05 11:00
The limitation of disturbances caused by fluctuating loads of medium size, at Low Voltage (LV), concerning appliances with input current > 16 A and < 75 A is the subject of this article. Now, why did we develop a practical tool in order to easily assess the disturbances? It's simple: the standards dealing with these issues are not exactly easy in use.
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By Michele De Witte / Published on Tue, 2008-01-29 12:39
Introduction
The limitation of disturbances caused by distorting loads of medium size, at Low Voltage (LV), concerning appliances with input current > 16 A and 75 A is the subject of this article. Now, why did we develop a practical tool in order to easily assess the disturbances? It's simple: the standards dealing with these issues are not exactly easy in use.
Low-voltage disturbances - harmonics
Main sources and examples
Harmonics are mainly caused by non-linear loads. This non-linearity can be intrinsic but can also be the result of repeated commutations of power electronic components.
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By Stefan Fassbinder / Published on Wed, 2006-12-20 01:00
As far as different states of operation are concerned, such as busy / standby, full power / save mode, yes, but that is trivial.
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By Stefan Fassbinder / Published on Wed, 2006-12-20 01:00
In a legal sense the EN 61000-3-2 became effective on January 1, 2001. Unfortunately this does not mean that it does also take substantial effect in a technical sense, while the basic idea was really a very proficient appoach – to solve the problem of harmonics dissipation right at the point of origin. Mind that the source of harmonics is generally the power consuming device and that therefore harmonics dissipate »upstream« from there, opposed to the direction of energy flow!
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