A practical formula for determining the thickness of insulation between low voltage and high voltage windings is__________________?
(A) 1 + 0.2 kVmm
(B) 2 + 0.5 kVmm
(C) 4 + 0.7 kV mm
(D) 5 + 0.9 kV mm
A practical formula for determining the thickness of insulation between low voltage and high voltage windings is__________________?
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