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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
F1 TB1-XX
200
220
380
415
600
208
240
400
480
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.
Connect
F2 TB1-YY
F3 TB2-XX
1
9
2
12
1
8
1
10
1
12
1
10
1
11
1
9
1
11
Connect
F4 TB2-YY
Jumper Between
1
9
2
12
1
8
1
10
1
12
1
10
1
11
1
9
1
11
12
Power and Control Wiring
1-7
6-8
2-7
4-7
6-7
1-7
1-7
3-7
5-7
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