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  • Hello Guys and Girls, this is Fahad from Islamabad. I want to know what is meant by -ve and +ve power factor? Could anyone here explain it with apt examples? Thanks in advance.
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  • Fahad Bhatti

    Member • Oct 3, 2008

    fRNDs
    didn't find any answer of my question about +ve and -ve Power Factor, well I must share the idea I have in my mind...

    I think it merely depicts the lagging or leading behaviour of current with voltage in AC circuits... Not more than that.
    The current lags the voltage for inductive loads and the power factor is +ve, the current leads the voltage in capacitance on load side and power factor is -ve.

    IS it Ok?????

    Any reparations needed?
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  • aj_onduty

    Member • Jan 31, 2011

    I am not much acquainted with this kind of a notation of the power factor. I strongly believe that positive power factor used to describe the leading power factor, and negative as the lagging power factor, taking power factor 1 as the reference point;. Lagging power factor is less than one(greater than zero and less than 1, usually 0.2, 0.4, 0.8 etc). leading power factor is more than one. Hope this is straight enough. 😁
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  • shreyasm89

    Member • Feb 1, 2011

    aj_onduty
    leading power factor is more than one.
    Dude, in what cases does this happen?
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  • aj_onduty

    Member • Feb 1, 2011

    If the load is a capacitive load, it will cause a leading power factor. If a load is inductive, it will cause lagging power factor.
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  • freak16

    Member • Feb 3, 2011

    @ aj
    Power factor can never be greater than 1 in any case. as it is the cosine of the angle between voltage and current. or ratio of active power to apparent power.
    so in any case cosQ wiil be 1 or less than one.
    until or unless Q is a real value..😀
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  • aj_onduty

    Member • Feb 4, 2011

    freak16
    @ aj
    Power factor can never be greater than 1 in any case. as it is the cosine of the angle between voltage and current. or ratio of active power to apparent power.
    so in any case cosQ wiil be 1 or less than one.
    until or unless Q is a real value..😀
    Sorry everyone for the misleading. I apologise for that.
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