EE 702 · Chapter 6
Utilization of Electrical Energy past question
6.5 Types of Tariff: Simple Tariff, Flat-Rate Tariff, Block-Rate Tariff, Two Part Tariff, Maximum Demand Tariff
A 340 kW, 50Hz, 3 phase star connected induction motor has full load efficiency of 85% and p.f of 0.8 lagging. It is desired to improve the power factor to 0.96 lagging by using bank of three capacitors. Calculate: (i) The kVAR rating of the capacitor bank. (ii) The capacitance of each limbs of the condenser bank connected in delta. (iii) The capacitance of each capacitor, if each one of the limb of the delta-connected condenser bank is formed by using 6 similar 3300v capacitors.