Low Voltage Power Factor Improveement Capacitors

In 1963, with the technical assistance of Shizuki Electric Works. Co., one of the foremast Capacitor manufacturers in Jan, the first YESHA' Capacitor manufactured in backed by the export supervision of engineers trained abroad.

The use of Power Factor Improvement Capacitors helps in reduction of electrical energy costs and in improving the utility of electrical installations.

Most AC electrical machines draw from the supply source an apparent power in terms of KVA (Kilovolt-amperes) which exceeds the useful power KW (Kilowatts) required by each machine. The ratio of these two measures, i.e.,
Useful Power KW / Apparent Power KVA

is known as the power factor of the load and is dependent upon the type of machine in use. A large proportion of electrical machinery used in industries has an inherently law Power Factor, which means that the supply source has to generate current in excess to the actual requirement and the transformers and cables have to carry this the extra useless current. To overcome this the supply authorities, impose penalty for low power factor and at many places they offer concession for higher power factor Installing a suitable capacitor will enable the user to take advantage of the concession and to avoid penalty. Thus, the of capacitors is covered normally in 12 to 15 months. Thereafter it is clear profit. The main advantages of installing power factor capacitors are:

• Reduced power cost, due to reduced KVA demand or exemption from any penalty for low power factor and concession for high power factor.
• Release of power system capacity. Additional load can be installed without investment in additional capital equipment.
• Reduced overloading and therefore less heating of cables and other expensive control panels.
• Reduced losses in Feeders.
• Reduction in voltage interference due to welding equipment, etc.
• Reduction in size of electrical equipment for new installation and, therefore, less capital expenditure.