Ups System Power Wiring Preparation; Figure 3-3. Upm Dimensions - Eaton 93PR Series User And Installation Manual

Left View
Left view
Figure 3-3: UPM dimensions
3.2.2

UPS System Power Wiring Preparation

If installing a maintenance bypass, a minimum of two separate feeds with upstream feeder breakers, or a
single feed with two upstream feeder breakers, must be provided: one for the UPS or rectifier input breaker (if
installed) and one for the maintenance bypass input. DO NOT use a single feed or a single feeder breaker to
supply both the UPS or rectifier input breaker and the maintenance bypass. If a bypass input breaker is installed
in the maintenance bypass and a single-feed UPS is being installed, a single feed to the maintenance bypass is
acceptable for supplying both the UPS and the bypass.
Read and understand the following notes while planning and performing the installation:
• Refer to national and local electrical codes for acceptable external wiring practices.
• To allow for future kVA upgrades (software and/or hardware), consider using conductors sized for full by-
pass rating of the UPS.
• Material and labor for external wiring requirements are to be provided by designated personnel.
• For external wiring, use 90 °C copper wire. See the appropriate information in Table 3-6: Minimum
recommended multi-core cable and fuse sizes. Wire sizes are based on using the specified breakers.
• If wire is run in an ambient temperature greater than 30 °C, higher temperature wire and/or larger size
wire may be necessary.
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NOTE
25-75 kW
User's and Installation Guide
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