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CT
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1 Rated Power 33000 KW
2 Rated Voltage 11 KV
3 Rated Power Factor 0.8
4 Rated Current 2165.1 Amps
5 Safety Margin 1.2 Times
6 CT Ration 2598.2
Hence CT Ratio Selected is 2600/1 Amps
Vk
WhereVk Knee Point VoltageRct Secondary CT Resistance, decided by the CT ManufacturerRl Lead Wire Resistance
Secondary Fault CurrentFault Level 40 KA
3 SecsRct Ohms2Rl 1.0 Ohms
15.38Satey Margin 16.92
236.92 Volts
CT Calculation for Vandana Project : 30(33) MW TG Set
> 2 * If ( Rct + 2Rl )
If
< 6
If
Vk >