EN6100-3-3 Interpretation
EN6100-3-3 Interpretation
(OP)
This section seems to be poorly worded and misinterpreted across the board.
It states that the maximum Voltage fluctuations and flicker allowable is dc=3.3%.
I assume this is refering to inrush current? Can anybody clarify this?
How can one make this applicable to inrush? Can you give an example of how you might use this 3.3% value?
Cheers!
It states that the maximum Voltage fluctuations and flicker allowable is dc=3.3%.
I assume this is refering to inrush current? Can anybody clarify this?
How can one make this applicable to inrush? Can you give an example of how you might use this 3.3% value?
Cheers!





RE: EN6100-3-3 Interpretation
Limits voltage changes that the unit under test can impose upon the input power source. This is referred to as the flicker test.
Although this is not normally a problem with power supplies, some types of electrical equipment, especially in process control,
can load the power source at regular or semi-random intervals. This can cause voltage changes that can affect the brightness of
electric lighting and cause flicker. A survey was performed to determine what rates of flicker were the most disturbing to human
subjects, and a curve of maximum percentage voltage variation at various frequencies was established.
The most disturbing rate was just over 1,000 changes per minute, and the curve reflects the smallest percentage change at this
frequency. Above 1,800 changes per minute the flicker is not noticed.
See: Power-line flicker [Wikipedia]
see: IEEE std 519 Flicker
http://www.google.co.il/url?sa=t&rct=j&q=ieee+519+flicker+curve&source=web&cd=4&ved=0CFgQFjAD&url=http%3A%2F%2Fwww.poweronsite.org%2FAppGuide%2FDataFiles%2FIEEEFlicker.pdf&ei=XCHCT7iZPNOu8QPhteH3Cg&usg=AFQjCNGmFDFzurMZYRBORbOJNztDBXXUqQ
Should IEEE adopt IEC Flicker Standards
http://www.google.co.il/url?sa=t&rct=j&q=ieee+519+flicker+curve&source=web&cd=2&ved=0CE0QFjAB&url=http%3A%2F%2Fwww.cpdee.ufmg.br%2F~selenios%2FQualidade%2FArtigo5.pdf&ei=XCHCT7iZPNOu8QPhteH3Cg&usg=AFQjCNGHk-z12I81h_qo4qpKvGChCVltOA