Ups System Power Wiring Preparations - Eaton 91PS User And Installation Manual

Eaton 91PS/93PS UPS 8-10 kW
Figure 9. Dimensions of Eaton 91PS/93PS UPS 8-10 kW
4.3.2
Note: If you are installing a maintenance bypass, provide one of the following:
- a minimum of 2 separate feeds with upstream feeder breakers
- a single feed with 2 upstream feeder breakers: one for the UPS or rectifier
input breaker and one for the maintenance bypass input.
Note:
Do not use a single feed or a single feeder breaker to supply
- the maintenance bypass and the UPS, or
- the maintenance bypass and the rectifier input breaker.
Note:
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.
When you plan and perform the installation, read and understand the following
notes:
• Refer to the national and local electrical codes for acceptable external wiring
practices.
• To allow for future kVA upgrades (software), consider using conductors that
are sized for the full bypass rating of the UPS.
• Material and labor for external wiring requirements must be provided by
designated personnel.
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Eaton Corporation plc 2018. All rights reserved.

UPS system power wiring preparations

Revision: 003 Document ID: P-164000672
User's and installation guide
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