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62 Electrical installation
Checking the settings of the auxiliary voltage transformer
([T21], option +G344)
Check the tap settings of all auxiliary voltage transformers. Transformer T21 is optional
equipment.
The voltage settings of transformer T21 are made at terminal blocks T21_X1/X2 and
T115_X1/X2 respectively.
T21 tap settings (690 V units)
￭
T21_X1
690 V
1
660 V
2
600 V
3
575 V
4
540 V
5
525 V
6
7
U1
8
TP1
9
TP2
10
T21_X2
1
230 V
2
3
4
N
5
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