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Power and Control Wiring
12
4.5 Power Supply
The STS2/PDU is supplied with redundant power supplies that are designed to operate from a voltage
range of 200V to 600V. The unit is set at the factory to match the nameplate voltage. Field adjust-
ments are not necessary. If the unit needs to operate at a voltage other than what is listed on the
nameplate, contact Liebert Global Services or your local Liebert representative. Table 6 provides
transformer tap information.
Table 6 Terminal block 1 and terminal block 2 wire connections
Voltage
Connect Connect
Jumper BetweenF1 TB1-XX F2 TB1-YY F3 TB2-XX F4 TB2-YY
200 1 9 1 9 1-7
220 2 12 2 12 6-8
3801818 2-7
415 1 10 1 10 4-7
600 1 12 1 12 6-7
208 1 10 1 10 1-7
240 1 11 1 11 1-7
400 1 9 1 9 3-7
480 1 11 1 11 5-7
!
CAUTION
Using Table 6, ensure that the wiring for the control transformers matches the input voltage
for the unit.
Improper wiring could result in blown fuses.