3.5.2 Power Management Software
Intelligent Power software products offer tools for monitoring and managing
power devices across the network. See Chapter 6.1 About communication
interfaces for more information.
3.6 Options and accessories
Contact your Eaton sales representative for more information about the available
options and accessories.
3.6.1 Maintenance Bypass Switch (optional)
The Maintenance Bypass Switch (MBS) enables power to bypass and isolate the
drive train of the UPS so that it can be safely serviced or replaced without
interrupting power to critical systems. Utilization of an external MBS enables
power to completely bypass the UPS, allowing a total isolation of the UPS.
An internal Maintenance Bypass Switch is provided as a factory-installed option.
Alternatively, MBS solutions are also available in an external enclosure as
accessory items.
External Maintenance Bypass Switch Panel (accessory)
The external MBS is enclosed in its own separate, wall-mounted cabinet. The
EMBS contains a rotary switch (MBP & MIS) to change the source that supplies
the load between the UPS output and the mechanical bypass. It may additionally
include two switches: one for the rectifier inputs (RIS) and another for bypass
inputs (BIS). It may also include auxiliary contacts to report the status of the
switchgear to the UPS.
For external MBS installation instructions, see the installation instruction shipped
with the unit.
3.6.2 Field Installed UPM (accessory)
With a 91PS/93PS UPS in a 30/40 kW frame that has only one UPM installed, a
Field Installed UPM (FI-UPM) can be installed in the cabinet any time in the
future when power needs change. This enables the UPS system to grow with the
business, thus lowering the initial investment required for the system on Day 1.
For a listing of the upgradeable configurations, see Tables 4: 93PS UPS
configurations and 5: 91PS UPS configurations.
CAUTION
Only an authorized Eaton Customer Service Engineer or other qualified
service personnel authorized by Eaton are allowed to install an FI-UPM.
NOTE: Examine the cable and fuse rating before power upgrades!
© Eaton Corporation plc 2020. All rights reserved. Revision: 006 Document ID: P-164000493 31 (126)
Eaton 91PS/93PS UPS 8–40 kW User’s and Installation Guide
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