“…No increase of this component of determined composite error for such conditions, in relation to the situation, when sinusoidal current is transformed, indicate that there is no magnetic core saturation and there is no need to decrease tested CT secondary winding load. However, taking into consideration, that the percentage composite error determined for distorted current exceed 0.3%, to ensure high accuracy of harmonics transformation, rated load active power of tested CT secondary winding should be reduced to 10 W [11,12]. This is due to the fact, that in such non-sinusoidal conditions for the same maximum magnetic field strength in the magnetic core, higher maximum magnetic flux density is obtained.…”