Megger MTO210, Instruction Manual

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M
AVTMMTO210 Rev 7 Sept 2013
34
TABLE 1.
EXAMPLES ON TRANSFORMER CONNECTION SCHEMES
FOR
INJECTING TEST CURRENT AND MEASURING TWO WINDINGS
SIMULTANEOUSLY
Vector Group
Measurement setup
Current Connections
Meas ch 1 Meas ch 2
+ Current Jumper - Current + - + -
Dd0
H1 H3-X1 X3 H1 H3 X1 X3
H2 H1-X2 X1 H2 H1 X2 X1
H3 H2-X3 X2 H3 H2 X3 X2
Dyn7
H1 H3-X0 X1 H1 H3 X0 X1
H2 H1-X0 X2 H2 H1 X0 X2
H3 H2-X0 X3 H3 H2 X0 X3
Dyn1
H1 H3-X1 X0 H1 H3 X1 X0
H2 H1-X2 X0 H2 H1 X2 X0
H3 H2-X3 X0 H3 H2 X3 X0
YNyn0
H1 H0-X1 X0 H1 H0 X1 X0
H2 H0-X2 X0 H2 H0 X2 X0
H3 H0-X3 X0 H3 H0 X3 X0
Ynd1
H1 H0-X1 X2 H1 H0 X1 X2
H2 H0-X2 X3 H2 H0 X2 X3
H3 H0-X3 X1 H3 H0 X3 X1
Dy1
H1 H3-X1 X2 H1 H3 X3 X2
H2 H1-X2 X3 H2 H1 X1 X3
H3 H2-X3 X1 H3 H2 X2 X1
YNd7
H1 H0-X2 X1 H1 H0 X2 X1
H2 H0-X3 X2 H2 H0 X3 X2
H3 H0-X1 X3 H3 H0 X1 X3
Dyn5
H1 H2-X0 X1 H1 H2 X0 X1
H2 H3-X0 X2 H2 H3 X0 X2
H3 H1-X0 X3 H3 H1 X0 X3
Dy11
H1 H3-X1 X3 H1 H3 X1 X3
H2 H1-X2 X1 H2 H1 X2 X1
H3 H2-X3 X2 H3 H2 X3 X2
Dyn11
H1 H2-X1 X0 H1 H2 X1 X0
H2 H3-X2 X0 H2 H3 X2 X0
H3 H1-X3 X0 H3 H1 X3 X0