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If load is 240 kw & pf is 0.8 lagging, than how to increase
it from0.8 to 1.0(unit),which rating capacitor used, please
give me Calculation. What is effact of consumer & suplier
if pf is lagging or leading with on effect machines/ TF/GE
etc.
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Answer Posted / mohit parmar
first of all u are not supposed to improvethe power factor
to 1.....since, u have to take clearance for sudden
disconnection of loads.any ways if u want to calculate
capaciitance value refer to any hand book of electrical
engineering,,they have the charts telling u the value of
capacitance if u know the present and ur required
value.regarding power factor...it is one of the main
criteria for efficient elctrical system...since it directly
effects the current carried by the system or cables or
equipment at load side.let us suppose there is a motor of
say...15 kw and pf is( case 1:.85and case2:.95)keeping
voltage constant we can see that current drawn in case1 is
1.2 times that of in case 2 so,this extra current for same
wattage generates more heat and hence losses.
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