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A CT under examination is actually assumed having appropriate polarity if immediate current direction for primary and supplementary present are other together. Photo: TestGuy.

The polarity scars on a CT designate the general instantaneous directions associated with currents. The polarity examination demonstrates that predicted way of second CT recent (leaving) try proper for certain path of major present (entering).

Taking good care to observe right polarity is essential whenever installing and linking present transformer to power metering and protective relays. Continue reading “A CT under examination is actually assumed having appropriate polarity if immediate current direction for primary and supplementary present are other together. Photo: TestGuy.”