A practical formula for determining the thickness of insulation between low voltage
and high voltage windings is
(a) 1 + 0.2 kVmm
(6) 2 + 0.5 kVmm
(c) 4 + 0.7 kV mm
(d) 5 + 0.9 kV mm
and high voltage windings is
(a) 1 + 0.2 kVmm
(6) 2 + 0.5 kVmm
(c) 4 + 0.7 kV mm
(d) 5 + 0.9 kV mm