Megger TTR25 Bedienungsanleitung Seite 64

M
Tabelle C-2 ANSI Transformator Wicklungsphasen-Verhältnis
Copyright 1999 © Megger
IEC
Diag Vector
No. Group
48 YNzn1
49 YNzn7
50 YNzn11
Winding Connection
High-Voltage Low-Voltage
Winding (H) Winding (X)
Winding
Phase Shorted
Tested By TTR Winding
A
⎯
B
C
A
⎯
B
C
A
⎯
B
C
56
Winding Tested
High- Low-
Voltage Voltage Measured
Winding Turn Ratio
H - H X - X
• 3
1 3 1 0 V
H
H - H X - X
2 1 2 0
V
X
H - H X - X
3 2 3 0
H - H X - X
• 3
1 3 0 1
V
H
H - H X - X
2 1 0 2
V
X
H - H X - X
3 2 0 3
H - H X - X
• 3
1 3 0 3
V
H
H - H X - X
2 1 0 1
V
X
H - H X - X
3 2 0 2
AVTMTTR25-GER Rev C ABRIL 2008