Current transformers are used so that ammeters and the current coils of other instruments and relays can be connected directly to high-current lines.
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Q1: Because it is not possible to use
Q2: The secondary of each instrument transformer is
Q3: Why must the three-phase instruments be connected
Q4: What is the main difference between a
Q6: The _ of the primary circuit is
Q7: The power factor is equal to the
Q8: On a three-phase, three-wire system, two potential
Q9: Potential transformers have highly accurate ratios between
Q10: The secondary winding of a current transformer
Q11: In a three-phase, four-wire system, both the
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