3.1. Power Factor Correction
Power-Save 1200 brings the advantages of the power factor correction capacitor to household use. Figure 1 shows a typical connection of the Power-Save 1200 unit in a household. This unit is usually connected to the breaker panel where the electricity is distributed to different locations in the house.
As mentioned above, the current passing through the current coil of the Energy-meter installed by the power distributor to monitor power consumption is the algebraic aggregate of the individual resistive, inductive, and capacitive currents flowing in different loads of the household, as shown in Fig. 1. Since the currents flowing in inductive and capacitive loads are half a cycle out of phase, it is possible to make their sum zero at any particular time by adjusting their magnitudes, consequently reducing the total current magnitude flowing through the Energy-meter.
Figure 2 (a) illustrates the instantaneous supply voltage, and currents in resistive, inductive, capacitive loads. It can be clearly seen that while the current in the resistive load is in phase with the supply voltage (è = 0°), the current through the inductive load lags the supply voltage by a quarter of a cycle (è = -90°), and the current through the capacitive load leads the supply voltage by a quarter of a cycle (è = +90°). Figure 2(b) displays the instantaneous supply voltage and the total current with and without the Power-Save 1200 capacitive load. Figure 3 is an exploded view of a section of Fig. 2(b) showing clearly the reduction of the phase angle between the supply voltage and the total current when Power-Save 1200 is connected to the system, thus improving the power factor and consequently, reducing the total current magnitude. Due to the reduction in the total current, the power loss (I2total x R1) in the
the Power-Save 1200, which varies from house to house, is also reduced. This is the instantaneous power saving that is achieved by installing Power-Save 1200. It is important to note that i) the resistance R1 will depend on the locations of the Energy-meter and Power-Save 1200, and ii) the power saving is proportional to the square of the reduction in the current brought about by the Power-Save 1200. Figure 4 presents average voltage, current, power, and power factor measured over a period of one hour in an actual household. It is clearly observed that the power consumption is reduced along with the improved factor and reduced current.
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Call Us: 570-420-0567
Toll Free: 877-620-2567
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There are three basic types of loads in an electrical system, e.g., resistive, inductive, and capacitive.
A device that stores energy in the electric field established between a pair of conductors.
Is capable of correcting the power factor toward various benefits of the consumer.
