ISA T 2000 - Page 85

DOC. MIE11110 Rev. 5
Page
85
of
110
value with respect to another, say Ea. This is normal
because of the single-phase feeding.
• The transformer ratio is:
- Type Dy (shown): 100 / (Ea * 1.73).
- Type Yd: 173 / Ea.
- Types Dd, Yy: 100 / Ea.