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Eaton 93PM UPS 480V Three-Wire – 100 kW Frame Installation and Operation Manual 164000227—Rev 07
An ABM charging cycle starts with the charger driving the battery voltage at maximum current limit, to a
battery charge level of 2.30volts/cell. The time it takes for the voltage to reach the battery charge level is saved
as the battery charge time. If the battery charge time exceeds 24 hours, an alarm sounds.
When the battery reaches the float level, the battery is charged at the float level for 48 hours. Due to charger
capability, some battery cabinet configurations extend float level to 72 hours. Twenty-four hours into the float
period, a series of battery tests are performed to check the battery health. The float level charge continues
after a successful test.
After initial startup, the battery run time on the front panel display indicates two minutes. After the 24-hour float
charging period and automated battery testing, the actual battery run time is determined and the actual battery
run time is displayed.
After the float period is completed, the charger is disconnected and the batteries are allowed to rest for up to
672 hours (28 days) maximum rest time. If the battery voltage falls below the opportunity charge level of 2.1V/
cell during the first 240 hours (10 days) of the rest period, an alarm sounds.
An ABM charge cycle is initiated whenever one of these four conditions occurs since the last charge cycle:
•
The batteries have rested over the maximum rest time of 672 hours.
•
Accumulated discharge time is over a maximum battery discharge time of 20 seconds.
•
Battery voltage is under the opportunity charge level of 2.1 volts/cell and the cabinet has been in rest mode
for longer than 240 hours.
•
A Battery Test command has been initiated.
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Contact an Eaton sales representative for information about the following options.
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Battery backup protection with additional runtime can be provide by equipping the UPS system with up to four
Integrated Battery Cabinets (IBCs) containing sealed lead-acid, maintenance-free batteries. The IBCs are
housed in single, free-standing cabinets designed for line-up-and-match installation, but may be installed
separate from the UPS cabinet. An external battery disconnect switch or tie point must be used when three or
four IBCs are located separate from the UPS cabinet. The IBCs may be installed on either the right or left side
of the UPS cabinet. The recommended installation location for adjacent battery cabinets is on the right side of
the UPS cabinet.
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The Integrated Accessory Cabinet-Distribution (IAC-D) provides power distribution with up to 2 42-pole
distribution panels or up to five 3-pole 100- 250A adjustable subfeed breakers. The IAC-D is housed in a single,
free-standing cabinet designed for line-up-and-match installation, but may be installed separate from the UPS
cabinet. The recommended installation location for an adjacent IAC-D is to the left of the UPS cabinet.
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An Integrated Accessory Cabinet-Power Distribution (IAC-PD) provides power distribution options for servers,
racks, and other equipment via distribution panelboards, or distributes power to larger loads via distribution
subfeed circuit breakers. The distribution options are customer configurable, enabling adaptation and expansion
without costly electrical rework.
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A Sidecar Integrated Accessory Cabinet-Bypass (SIAC-B) provides maintenance bypass functions. The SIAC-B
is available in two, three, or four breaker configurations enabling power to completely bypass the UPS. The
UPS can then be safely serviced or replaced without interrupting power to critical systems. The four breaker
configuration provides a convenient method for removing power from the UPS when using the maintenance
Summary of Contents for 93PM Series
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