Eaton 9155 N - Transformer Option; Figure 5-2: UPS with Battery Module(S) and the Rear Mounted Mechanical Bypass Switch

12 8-10 kVA, 50/60 Hz (1-phase input) &
8-15 kVA, 50/60 Hz (3-phase input)
P-164000341
User's Guide Revision 1
Figure 5-2: UPS with battery module(s) and the rear mounted mechanical bypass switch
5.2 Transformer option
The galvanic isolation transformer can be ordered as factory installed. The transformer is an integral
part of the UPS unit and it can be connected to the input or the output of the system. Systems with
factory installed transformers are referred to as: 9155 NT-model (3 phase in, 1 phase out), 9155 ST-
model (1 phase in, 1 phase out) or 9355 NT-model (3 phase in, 3 phase out). With transformers, UPS
can also operate in different voltages. Transformer configurations and operation voltages can be
customized to match the customer needs. Alternatively, isolation transformers can be purchased as
separate items.
The over temperature sensor cable from the transformer module is connected to the control input
(X44) and the status information from the maintenance bypass switch is connected to the control
input (X45). In the factory installed systems these cables are ready-made for use.