Harshal Tidke
Member
Hi,
I need to calculate Short Circuit current on HT side of Bus elevel for 4 number 1000 KVA Step Up transformers operating in parallel feeding a bus. The impedance of each transforner is 5.1% and FL current on HT side is 87.5 Amps. For one transformer the calculation would be 100/5.1*87.5=1715.68Amps.But for parallel operation the impedance would be 4/5.1=.78.But do I also multiply the currents by 4?
Please advice
I need to calculate Short Circuit current on HT side of Bus elevel for 4 number 1000 KVA Step Up transformers operating in parallel feeding a bus. The impedance of each transforner is 5.1% and FL current on HT side is 87.5 Amps. For one transformer the calculation would be 100/5.1*87.5=1715.68Amps.But for parallel operation the impedance would be 4/5.1=.78.But do I also multiply the currents by 4?
Please advice