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Wrong entry

# lagging power factor [tech.], leading power factor [tech.] - Blindfaktor

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Examples/ definitions with source references
Comment
I was hoping to find a translation for leading/lagging power factor, but instead found this. It looks like the translation for "reactive factor" to me.
Authorkurzschluss22 Sep 09, 02:46
Comment Blindfaktor is not correct. It is the sine of the phase angle, whereas power factor is the cosine.The correct translation of "power factor" would appear to be "Wirkfaktor"."Er ist gleich dem Kosinus des Phasenverschiebungswinkels φ"; see http://de.wikipedia.org/wiki/Wirkfaktor.I'm not at all sure if there is a standard German term for "leading power factor" and "lagging power factor", but I think you would be understood if you said "kapazitiver Wirkfaktor" bzw. "induktiver Wirkfaktor". (Ohne Gewähr.)
Comment Leading power factor is kapazitiver/voreilender Leistungsfaktor in German, lagging power factor is then induktiver/nacheilender Leistungsfaktor. Blindfaktor is reactive factor - maybe somebody can sort it out.
Comment I'll go along with krazy_mom. From what I read, Leistungsfaktor and Wirkfaktor are the same thing, except for the algebraic sign. Leistungsfaktor is always positive, and Wirkfaktor can be positive or negative (positive for leading; negative for lagging.)Therefore, if I understand German practice correctly, (kapazitiver Leistungskaktor) = (kapazitiver Wirkfactor) (induktiver Leistungskaktor) = -(induktiver Wirkfactor)I don't know about Blindfaktor in German, but I've never seen the term "reactive factor" used in English. Engineers talk about the phase angle or, more commonly, the power factor (the cosine of the phase angle); not about the reactive factor.
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## der Blindfaktor

Context/ examples
reactive factor - "The ratio of the reactive power to the apparent power."

from IEEE 100, "The Authoritative Dictionary of IEEE Standards Terms", 7th Edition
Comment
Thanks to both of you for the translation.

I have never heard an English speaker use "reactive factor" either. However, I just found it in an IEEE standard (above). I agree this is Blindfaktor.

I have to disagree however that an inductive vs. reactive load will result in a negative or positive power factor. If Q (reactive power) is not in the formula for power factor (P/S), changing reactive power (inductive vs. reactive) will not change the sign on cos(phi) which is why we have to say "leading" or "lagging." A negative P (real power) however, could give you a negative power factor.

I've never heard an English speaking engineer use |P|/S= cos(phi) and I couldn't find it in the IEEE document above either. I'm guessing it's useful if you want to eliminate the direction of real power flow (i.e. generator vs. motor for example) in your network analysis.
#4Authorkurzschluss (AE)23 Sep 09, 01:58

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