P-164000477 9395P750 kVA / 900 kVA and 1000 kVA / 1100 kVA 21
Revision 002 User’s and Installation Guide
• To allow for future kVA upgrades, consider using conductors sized for non-derated units to wire
derated units.
• Material and labor for external wiring/busbar requirements are to be provided by designated
personnel.
• Specification is for copper wire with a 90°C rating.
• The bypass feed into this equipment uses three or four wires. The rectifier feed into this
equipment uses three wires. The phases must be symmetrical about ground (from a Wye source)
for proper equipment operation.
• 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 must
be installed to source star point.
• This UPS system can be installed to the TN, TT or IT power distribution systems.
Additional warning labels, shown in Figure 5-15, shall be installed at the UPS input terminals
and all primary power isolators used to isolate the UPS unit if:
• the UPS system is installed to an IT power distribution system
• or the UPS input is connected through external isolators that, when opened, isolate the
neutral connection.
• These warning labels can be obtained from your local service representative.
• 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.
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