Light Output vs. voltage??

Does anyone have any manufacturers data on light ouput (lux) versus mains voltage for:-

1. filiment lamp
2. Flourescent tube

Regards
Kevin

Conservation Voltage Reduction

Conservation Voltage Reduction (CVR) basically is lowering substation voltages to save energy. There are many papers in existence to demonstrate the principle and report on successes and limitations of the various techniques.

My question is:-

How is the energy being saved?

I do understand where some of the energy is being saved but I don't want to lead this forum down a specific route. I would like to open this up for debate......

Any ideas and suggestions or hunches are welcome.

Kevin

Lowering Substation Voltages

I have recently lowered the voltage on a distribution substation by approx. 5% using an off load tap changer. After the reduction in voltage we have seen approx. 10% reduction in power consumption (and I think the power factor has changed - improved).;d;

Can anyone explain why this has happened?

I know there will be savings from resistive loads and reduction in some losses.

I am particularly interested in the effect of the reduced voltage on induction motors. What effect has this had and why. Surely P=V x I x p.f. so if I lower the voltage the current should increase. This isn't what I have observed.
Is this due to a lightly loaded motor or some other reason?

Regards
Kevin
;p;