Bosch Rexroth PST 6 0 Series, Operating Instructions Manual

Page: 264 / 330

1070080029 / 05 Bosch Rexroth AG Electric Drives
and Controls PST 6xx0 | | 264 /330
Assembly
7.2.3 Transformer connection (primary circuit)
WARNING
Dangerous electrical voltage
Possibility of cardiac arrhythmia, burns, shock!
"
Before working on U2 and V2, ensure that no supply voltage is
present at U1 and V1.
U1 is looped internally to U2. That is why full supply voltage is
present at U2 and, through the internal resistance (see Fig. 2:
page 210), also at V2, whenever supply voltage has been applied
to U1.
"
Attach the cables for U2 and V2 with aluminum brackets and always
guide the cables - if necessary - through the housing metal together
(because of inductive temperature rise).
The positions of the connections are indicated in Section 7.1.1 from
page 256.
"
Connect the terminal U2 of the thyristor power unit with connection U
at the transformer.
"
Connect the terminal V2 of the thyristor power unit with connection V
at the transformer.
ENGLISH