Don Kelly wrote:

Don, what you're describing here is the 'sign' of the reactive load (VAR). Var load is 'generated' and supplied to loads. But the power factor (cos(theta) or W/VA) is positive for both lagging or leading load (positive or negative VAR load).

If one looks at the trigonometry of it, a 'negative power factor' would mean that you have a negative W (since VA can never be negative) and that would be power reversal (load becomes source).

daestrom

Don, what you're describing here is the 'sign' of the reactive load (VAR). Var load is 'generated' and supplied to loads. But the power factor (cos(theta) or W/VA) is positive for both lagging or leading load (positive or negative VAR load).

If one looks at the trigonometry of it, a 'negative power factor' would mean that you have a negative W (since VA can never be negative) and that would be power reversal (load becomes source).

daestrom