Current Transformer
GATE Electrical Engineering · Power Systems - Current Transformers and Auxiliary Transformers · 1997-2026
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All concepts →In the circuit shown, the phase currents are $I_A = 572.812+ j50.115 A$ $I_B = -254.525- j459.175 A$ $I_C = -207.083+ j444.091 A$ Given that the CTs are ideal with no saturation, a...
The table lists two instrument transformers and their features: Instrument Transformers Features X) Current Transformer (CT) P) Primary is connected in parallel to the grid Y) Pote...
The total impedance of the secondary winding, leads, and burden of a 5 A CT is 0.01 Ω. If the fault current is 20 times the rated primary current of the CT, the VA output of the CT...
A $$200/1$$ current transformer $$(CT)$$ is wound with $$200$$ turns on the secondary on a toroidal core. When it carries a current of $$160$$ $$A$$ on the primary, the ratio and p...
A $$50$$ $$Hz,$$ bar primary $$CT$$ has a secondary with $$500$$ turns. The secondary supplies $$5A$$ current into a purely resistive burden of $$1\,\Omega $$. The magnetizing ampe...
The core flux in the $$CT$$ of above problem under the given operating condition is
A $$500$$ $$A/5$$ $$A,$$ $$50$$ $$Hz$$ current transformer has a bar primary. The secondary burden is a pure resistance of $$1\,\Omega $$ and it draws a current of $$5A$$. If the m...
The primary current in a current transformer is dictated by