Instruction manual

INSTALLING THE UPS SYSTEM
Eaton
®
9390 UPS (20–80 kVA) and 9390IT (20-40 kVA) Installation and Operation Manual S 164201603 Rev 4 www.eaton.com/powerquality
4-10
4.4 Integrated Distribution Cabinet Installation
To install and wire an IDC, refer to the Eaton 9390 Integrated Distribution Cabinet
(80 kVA) Installation and Operation Manual. After the IDC is installed and wired, return
to paragraph 4.7 to complete the UPS cabinet wiring.
4.5 Integrated Accessory Cabinet Installation
To install and wire an IAC, refer to the Eaton 9390 Integrated Accessory Cabinet
(IAC-B and IAC-T Configurations) Installation and Operation Manual or the Eaton 9390
Integrated Accessory Cabinet (IAC-D Configuration) Installation and Operation Manual.
After the IAC is installed and wired, return to paragraph 4.7 to complete the UPS
cabinet wiring.
4.6 UPS Sidecar Wiring
To wire a UPS Sidecar, refer to the Eaton 9390 UPS Sidecar Installation and Operation
Manual. After the UPS Sidecar is wired, return to paragraph 4.7 to complete the UPS
cabinet wiring.
4.7 Installing UPS External and Battery Power Wiring
NOTE The 9390IT unit internal battery configuration requires an Eaton Customer Service Engineer to
connect the internal battery tray connections prior to system startup.
NOTE The UPS cabinet is shipped with a debris shield covering the ventilation grill on top of the cabinet.
Do not remove the debris shield until installation is complete. However, remove the shield before operating
the UPS. Once the debris shield is removed, do not place objects on the ventilation grill.
NOTE Remove the UPS cabinet top or bottom conduit landing plate to drill or punch conduit holes (see
Drawing 164201603-7 on page A-36).
NOTE If 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. DO NOT install both a source neutral and a bonding jumper. See Table F on A-13 through
Table K on A-18 or Table T on A-31 through Table W on A-34 for neutral bonding jumper wire sizes. Bonding
jumper must be copper wire.
C A U T I O N
HIGH IMPEDANCE GROUND SOURCES - If the supply source is a high impedance ground (IT) type, the input
neutral conductor must be connected from the source of supply. If there is no output neutral connected to the
UPS, the neutral‐forming transformer kit (PN 103005400) may be used instead of pulling a neutral from the
source. If the load requires a neutral, then an input neutral conductor must be pulled into the UPS. In no
circumstances shall a neutral to ground bonding jumper be installed in the UPS.
C A U T I O N
DELTA SOURCES (TN‐S) - The 9390 UPS system can be operated only from a delta supply source that is fully
floating and if the neutral‐forming transformer kit (PN 103005400) is installed in the UPS. The UPS cannot be
operated from a mid‐point or end‐point grounded delta supply source. With this type of supply source, there
is no capability to provide an output neutral. In no circumstances shall a neutral to ground bonding
jumper be installed in the UPS.