Powerware 9390 UPS 100160 kVA - Manual (Page 32)

INSTALLING THE UPS SYSTEM
EATON Powerware ® 9390 UPS (20–80 kVA) Installation and Operation Manual S 164201603 Rev 2 www.powerware.com 4-6
4.7 Installing UPS External and Battery Power Wiring
NOTE The UPS cabinet is shipped with a debris shield covering the ventilation grill on top of the unit. 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 164201603-6 on page A-34).
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 E on A-11 through
Table J on A-16 or Table S on A-29 through Table V on A-32 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.
To install wiring to connections:
1. Slide the air filter up and remove it from the cabinet.
2. Remove the screws securing the control panel door and swing the door open.
3. Remove the screws securing the bottom internal safety shield panel and remove
the panel to gain access to the input, output, and battery terminals. Retain the
hardware for later use.
4. If installing power wiring from the top of the cabinet, proceed to Step 5;
otherwise, proceed to Step 6.
5. TOP ACCESS WIRING. Remove the screws securing the top internal safety
shield panel and remove the panel to gain access to the top wiring entry. Retain
the hardware for later use. Remove the top conduit plate from its storage
location on the top of the UPS. Identify all conduit requirements and mark their
location. Drill and punch all conduit holes in the top conduit plate prior to
mounting on the UPS. Install the conduit plate and install all conduit runs into the
plate. Pull wiring through conduit into the UPS wiring area.
6. BOTTOM ACCESS WIRING. Remove the bottom conduit plate from its location
on the bottom of the UPS. Identify all conduit requirements and mark their
location. Drill and punch all conduit holes in the bottom conduit plate prior to
mounting on the UPS. Install the conduit plate and install all conduit runs into the
plate. Pull wiring through the conduit into the UPS wiring area.