- Question 2 Three Set Of Single Phase Transformers 20 Kva 2300 230 V 50 Hz Are Connected To Form A Threephase 3984 23 1 (61.18 KiB) Viewed 44 times
QUESTION 2 Three set of single-phase transformers, 20 kVA, 2300/230 V, 50 Hz are connected to form a threephase, 3984/230 V, transformer bank. The equivalent impedance of each transformer referred to its low voltage side is (0.0012 + j0.024) . The three- phase transformer bank supplies a load of 54 KVA at a power factor of 0.85 lagging at rated voltage by means of a common three-phase load impedance with (0.09 + j0.01) per phase. Compute the following: i) A schematic diagram showing the transformer connection. ii) The sending end voltage of the three-phase transformer. iii) The voltage regulation. (10 marks)