Powerware®Plus 12 Operator's Manual (164200090 Rev E) i
This manual contains important instructions for your Powerware®Plus 12
ninterruptible Power Supply ( PS) that should be followed during installation and
maintenance of the PS, battery, and I/O cabinets.
To avoid equipment damage or personnel injury, use extreme care when handling the
cabinets. Cabinet weights range from 180 lb (82 kg) to 300 lb (136 kg). Before
transporting, test lift and balance the cabinets. Minimum tilt from vertical must be
maintained at all times. The pallet supports the cabinets only if the forks are completely
beneath the unit.
Since the PS may contain batteries, the hazard of electric shock is present even when
the power processor is off. To avoid any release of sulfuric acid vapors, maintain
batteries below the maximum recommended temperature. Refer battery servicing to
qualified service personnel only.
In the event of a fire involving the PS and its batteries, use only carbon dioxide fire
extinguishers or those approved for use in electrical fire fighting.
Because lethal voltages exist within the PS during operation, extreme caution is
necessary when performing maintenance. Be sure to observe all warnings and
cautions in this manual. Make sure that qualified service personnel perform the
procedures when noted in the instructions. Failure to comply may result in serious
injury or death. When the PS is in Maintenance Bypass mode, PS components are
deĆenergized with the exception of EMI capacitors, output terminals, bypass
contactors, bypass control board, breakers, and battery cabinet. To achieve complete
isolation, remove all input and battery power. Some cabinet components are not
connected to chassis ground. A lethal shock hazard exists when any contact between
floating circuits and the chassis occurs.
The Powerware Plus 12 PS contains high DC and AC voltages. If you turn off the input
power and disconnect the batteries, the high voltage at the filter capacitors and power
circuits is discharged to under 30 Vdc within five minutes. In the event of a power
failure, you should make the assumption that high voltage still exists after shutdown.
se voltmeters to check AC and DC voltage before making contact.
If you plan to use test equipment while the PS has power, you must isolate both the
test personnel and test equipment from direct contact with earth ground and the PS
chassis frame using rubber mats.
Safety Considerations
The PS contains LETHAL VOLTAGES. All repairs should be performed
by trained service personnel. There are no userĆserviceable parts inside the PS.
The PS contains its own energy source (battery). The output
receptacles may be live even when the PS is not connected to an AC supply.
There is high voltage present at terminals 9 and 10 (terminals for remote battery
connection) when a battery cabinet is connected to the PS.
