UPS INSTALLATION PLAN AND UNPACKING
EATON Powerware® 9395 UPS (1000–1100 kVA) Installation and Operation Manual S 164201764 Rev 1 www.powerware.com
3−20
SThe REPO switch wiring must be in accordance with NEC Article 725 Class 2
requirements.
SThe maximum distance between the REPO and the UPS cannot exceed
150 meters (500 feet).
SAlarm relay contacts have a maximum current rating of 5A and a switched voltage
rating of 30 Vac and 28 Vdc.
SAlarm relay wiring should be a minimum of 22 AWG.
3.2.4 Distributed Bypass Power Wiring Preparation
Read and understand the following notes while planning and performing the
installation:
SAll distributed bypass UPS rectifier inputs must come from one source and all
bypass input feeds must come from one source.
SDistributed bypass UPS input wiring size requirements and output wiring size
requirements from the UPSs to the tie cabinet or distribution panel are the same as
listed in Table 3-4, Table 3-5, Table 3-6, or Table 3-7 starting on page 3−9.
SIf the load requires a neutral, a bypass source neutral must be provided. If the load
does not require a neutral and there is no neutral conductor connected at the
bypass input, a neutral to ground bonding jumper must be installed. Install neutral
conductors from the UPSs to the common point of connection (tie cabinet), and
then install a system neutral to ground bonding jumper. The bonding jumper must
be copper wire. DO NOT install both a source neutral and a bonding jumper.
If the recommended system neutral bonding jumper installation method cannot be
accomplished, each UPS should have a separate neutral to ground bonding jumper
installed. See Table 3-4, Table 3-5, Table 3-6, or Table 3-7 starting on page 3−9 for
UPS neutral bonding jumper wire sizes. The bonding jumper must be copper wire.
DO NOT install both a source neutral and a bonding jumper.
SThe UPS cannot be installed in a high−resistance ground application.
SMOBs with dual auxiliary contacts are to be provided by the customer. Table 3-15
on page 3−17 lists the recommended rating for the MOBs.