mejo OT po:di po ba may mga binebenta na power-saving device sa mercado (metro TV, yung power star)....meron kasi kaming similar device para dun sa ref namin,bumaba naman yung bill namin, tas nung tiningnan ko, automatic power factor correction yung ginagawa nya...so baka bumili ka nalang nun hehehe, pero mahal yun pero at least applicable sa lahat ng appliances
If you know how to dismantle the components of refrigerator, I recommend to installed a capacitor connected in parallel to the power supply terminal leads of the motor. It will functions as a power factor and no need to install electronic controller.... thats my idea but I don't do it by my self either hehehe.But I tell you my experienced regarding this matter. We have a Pump House somewhere in Taytay with a Booster Pump of 60 Hp and Deep well of 30 Hp. Our Electricity Bill cost us around 75,000.00 pesos per month with a penalty charged in Power Factor. To correct these, I installed a magnetic contactor and connected the coil parallel to the main cantactor of the motor. Installed also a bank of capacitors and tapped the supply to the additional magnetic contactor. So when the control panel is energized the motor and the capacitor are activated simultaneously. The result is great because we pay only 60,000.00 plus per month after the installation of capacitors, with incentive in power factor improvement of 95 percent reflected in the Meralco electric bill. I done this without using any Power Factor Controller or Electronics devices.
In addition to the comment in saving power, one factor is reducing the demand in the system. In my example above we have two motors running to pump water in our compound and if those two motors runs simultaneously the demands registered the total power (kW) in the Meralco meter. It means 60 hp(44 kw) plus 30(22 kW) equals 66 kW in all.Meralco Bill Computation looks like this:Transmission Charge(PhP/kW/mo.) 66 (kW) x 335.3700 = 22,132.42Distribution Charge(PhP/kW/mo.) 66 x 119.4000 = 7,880.40 You have to pay (related to Demand only) = 30,012.82But if you managed the power demand by starting the two motors one in a time ( I make these by putting an interlocking switch between the booster pump motor and Deep well pump motor control, it means you cannot start booster pump if the deep well is in running condition same with the deep well or vice versa ) After I upgraded the control the results looks like this:Transmission Charge(PhP/kW/mo.) 44 (kW) x 335.3700 = 14,756.28 Distribution Charge(PhP/kW/mo.) 44 x 119.4000 = 5,253.60 You have to pay (related to Demand only) = 20,009.88In these example comparing the two figures you can save P 10,000.00 per month in reducing the DemandIt is a true story of mine.....
Hmm... diba pag naglagay ka ng power factor corrector, wala ka talagang nasa-save, infact, baka lumaki pa nga bill mo e. Power factor corrector is just for compliance for the benefit of the utility power grid, not for the consumer, para exact real power consumed versus bill chaka para di ka ma-penalty ng power company pag nalaman nila na bumaba power factor ng bahay mo below a certain level. The power company distributes power in Apparent Power VA. Pero yung metro natin sa bahay, we are billed by real power in watts. Kaya as much as possible gusto ng power companies mag- equal yung VA(apparent power) na nilalabas nila sa Watts(real power) na knconsume natin para di sila malugi at wlang daya.. Ibig sabihin, the lesser the power factor, the less bill kung di ka mahuhuli. Maglagay ka ng capacitor bank sa bahay, liliit ang power factor, liliit din ang bill. I'm not sure, pero this is what I think. Correct me sirs if I'm wrong.