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So i will use 0.2ohm 10W resistor.
At 450 Amps running through primary secondry will read 4.5Amps.
V=IR
That gives me 0.9Vac (theoretically, but near to that practicaly). Is that it?
1. Sorry i did not understand how the 230 Vac can rise upto 40kVac:?:. It means the CT on which i did the experiment can no more be used?
2. So i have to use a 10/25= 0.4ohm 10W resistor? And is there some formula to know how much volatages would the burden resistor meausres for each ampere...
Yes mine one has a 10VA. So what is the exact formula to calculate burden resistance? I only need to know how much AC volts will the CT generate accross the burden per amp.
That means the volatges i measured accross the secondry without the burden were false?
Yes i will use a presision...
No that is not the case.:-P The primary is literally gonna see around 410 amps (It's a 500kVA genset). I was wondering if there is a 25 watt resistor available>
I have once clamped the CT on one of the phase and measured the output voltage without any burden resistor with the multimeter. It...
Hi all.
I am designing a circuit to measure the current through each of three phases via Current Transformer. Each phase consists of separate CT.
The ratio of the CT is 500:5 and my maximum primary current for each phase is nearly the same (500 Amps). I have done some calculation for the...
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