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4.13 SYNCHRONIZATION
By standard, each power section is fi tted with a transformer for an input voltage of up to 690V.
After fi ltering, the synchronization signal for control of the thyristors is generated from the secondary
voltage. The connections are wired by the works. This includes the following terminals:
TERMINAL STRIP X7
X7.1 X7.2 NAME
12 11 current transformer phase L1
14 13 sync phase L1
16 15 load voltage phase L1
22 21 current tranformer phase L2
24 23 sync phase L2
26 25 load voltage phase L2
32 31 current tranformer phase L3
34 33 sync phase L3
36 35 load voltage phase L3
TAB. 21 TERMINAL STRIP X7
For the synchronization the following jumpers are necessary on the componentry of the control
device.
THYRO-P SHORT CIRCUIT JUMPER
1P X507 X508
2P X507 -
3P - -
TAB. 22 SYNCHRONIZATION JUMPER