doble SFRA, User Manual, Page: 103 / 126

B. Test Templates
72A-2570-01 Rev. K 07/2011 B-5
* Indicates short-circuit tests where the terminals are shorted together with three
sets of jumpers, to provide symmetry (X1-X2, X2-X3, X3-X1) OR (Y1-Y2,
Y2-Y3, Y3-Y31). The neutral is not included for 3

wye connections but may
be included for 1

test connections.
Tert Open Circuit (OC)
All Other Terminals
Floating
Test 7 Y1-Y3 Y1-Y0 Y1-Y3 Y1-Y0
Y1-Y2
(Y1-Y0)
Test 8 Y2-Y1 Y2-Y0 Y2-Y1 Y2-Y0
Test 9 Y3-Y2 Y3-Y0 Y3-Y2 Y3-Y0
Short Circuit (SC)
High (H) to Low (L)
Short [X1-X2-X3-X1]*
Test 10 H1-H3 H1-H3 H1-H3 H1-H3
H1-H0
Short
[X1-X2]*
Test 11 H2-H1 H2-H1 H2-H1 H2-H1
Test 12 H3-H2 H3-H2 H3-H2 H3-H2
Short Circuit (SC)
High (H) to Tertiary (T)
Short [Y1-Y2-Y3-Y1]*
Test 13 H1-H3 H1-H3 H1-H3 H1-H3
H1-H0
Short
[Y1-Y2]*
Test 14 H2-H1 H2-H1 H2-H1 H2-H1
Test 15 H3-H2 H3-H2 H3-H2 H3-H2
Short Circuit (SC)
Low (L) to Tertiary (T)
Short [Y1-Y2-Y3-Y1]*
Test 16 X1-X3 X1-X3 X1-X0 X1-X0
X1-X0
Short
[Y1-Y2]*
Test 17 X2-X1 X2-X1 X2-X0 X2-X0
Test 18 X3-X2 X3-X2 X3-X0 X3-X0
Table B.4 Three-Winding Transformer Table – 18 Tests (Part 1) (Continued)
Test Type Test #
3

Delta-
Delta-
Delta
3

Delta-
Delta-
Wye
3

Delta-
Wye-
Delta
3

Delta-
Wye-
Wye
1

Table B.5 Three-Winding Transformer Table – 18 Tests (Part 2)
Test Type Test #
3

Wye-
Wye-
Wye
3

Wye-
Wye-
Delta
3

Wye-
Delta-
Wye
3

Wye-
Delta-
Delta
HV Open Circuit (OC)
All Other Terminals
Floating
Test 1 H1-H0 H1-H0 H1-H0 H1-H0
Test 2 H2-H0 H2-H0 H2-H0 H2-H0
Test 3 H3-H0 H3-H0 H3-H0 H3-H0