The quality of electricity is one of the key indicators.

Depending on the type of system load and quality provided by the electricity supplier, users are faced with the same problems of the following (or combinations thereof).

• Harmonic distortion. Even with a guaranteed quality of delivered energy and the absence of distortion, the latter may arise in the process of energy consumption and due to the nature of the load - switching power supply (for example, personal computers), AC motors and fluorescent lighting. In recent years, these devices have appeared in large numbers, both in enterprises and homes and cottages. Harmonic distortion can be the reason of overheating in the windings of motors, as well as reducing the efficiency of systems. Furthermore, the presence of harmonics reduces the power factor, due to increase in the proportion of reactive energy, which can not be used load.

• Uneven loading phase. In three-phase systems is difficult to achieve uniform loading of all phases, so often one (or two) phase is loaded more than others. For example, this situation occurs when connecting single-phase sockets and lighting on one phase of a three-phase system, causing increased load of the phase with respect to the others. The consequence is a reduction in overall system efficiency.

• The maximum inrush current. For most electrical devices starting current (starting current) exceeds the nominal. Although this process is short, it can cause increase in the cost of electricity for businesses. Depending on the rate of power supply, the company may charge a monthly fee is not at par and at the maximum power consumption. The excess can be up to 30% of the monthly cost of electricity.

• Transient voltage drop. The power supply system may decrease the voltage from the nominal value. This leads to the fact that the motors and other devices use current that exceeds the nominal value, which may cause their failure and reduced efficiency.

• Reduced power factor. The power factor is the ratio of active power to the full. The presence in the system with reactive loads (motors, pumps, heaters, ventilation and air) increases the reactive power and reduce the power factor. Since the reactive power load is not consumed (energy is exchanged between the source and sink), a reduction in system efficiency.

Depending on the particular system eliminating the problems described above can save 10 - 30% of the energy, depending on the degree of each of the negative factors. In practice, developed a large number of technical solutions to combat the problems listed, the main drawback is that, as a rule, each of the devices is designed to solve one of these problems.

Energy Saving Device (Module - Optimizer "ECOD" Feigin Electric Co., Ltd., Thailand) provides a comprehensive solution to the above problems.

www.feiginelectric.com