Megger TTR310 - Table 5-5. CEI;IEC 76-1:1993 Transformer Winding Phase Relationship

SETUP AND CONNECTIONS
AVTMTTR310 Rev 8 May 2016
49
Table 5-5. CEI/IEC 76-1:2011 Transformer Winding Phase Relationship
Copyright 2009  Megger
Winding Connection Winding Tested
Diag
No.
IEC
Vector
Group
High-Voltage
Winding (U1)
Low-Voltage
Winding (U2)
Phase
Tested
Winding
Shorted
By TTR
High-
Voltage
Winding
Low-
Voltage
Winding
Measured
Turn Ratio
Remarks
1
1

1ph0
1

1.1-1.2
2.1-2.2
U1
U2
Single-phase
transformer
2
1

1ph6
1

1.1-1.2
2.2-2.1
U1
U2
Single-phase
transformer
3
Dd0
U
V
W



1U-1V
1V-1W
1W-1U
2U-2V
2V-2W
2W-2U
U1
U2

4
Dd2
U
V
W



1U-1V
1V-1W
1W-1U
2W-2V
2U-2W
2V-2U
U1
U2

5
Dd4
U
V
W



1U-1V
1V-1W
1W-1U
2W-2U
2U-2V
2V-2W
U1
U2

6
Dd6
U
V
W



1U-1V
1V-1W
1W-1U
2V-2U
2W-2V
2U-2W
U1
U2

7
Dd8
U
V
W



1U-1V
1V-1W
1W-1U
2V-2W
2W-2U
2U-2V
U1
U2

8
Dd10
U
V
W



1U-1V
1V-1W
1W-1U
2U-2W
2V-2U
2W-2V
U1
U2
