Static Uninterruptible Power Supply
Page 12 of 12
Eaton 9390 Guide Specification
October 9, 2009
designed for computer room applications. Front doors shall have locks to prevent
unauthorized entry.
B.
Ventilation: The UPS shall be designed for forced-air cooling. Air inlets shall be on the
front of the unit. Air outlets shall be on the top. Eighteen inches of clearance over the
UPS outlets shall be required for proper air circulation. Air filters shall be commonly
available sizes.
C.
No back or side clearance or access shall be required for the system. The back and side
enclosure covers shall be capable of being located directly adjacent to a wall.
D.
Cable entry: Standard cable entry for the UPS cabinet shall be through either the
enclosure bottom or top. A dedicated wireway shall be provided within the UPS cabinet
for routing user input and output wiring.
E.
Front access: All serviceable subassemblies shall be modular and capable of being
replaced from the front of the UPS (front access only required). Side or rear access for
installation, service, repair or maintenance of the UPS system shall not be required.
F.
Service area requirements: The 208Vac system shall require no more than thirty-six (36)
inches of front service access room and shall not require side or rear access for service
or installation. The 480Vac system shall require no more than forty-two (42) inches of
front service access room and shall not require side or rear access for service or
installation.
2.07
CONTROLS AND INDICATORS
A.
Microprocessor controlled circuitry: The UPS controls shall have the following design
and operating characteristics:
1.
Fully automatic operation of the UPS shall be provided through the use of
microprocessor controlled Digital Signal Processing. DSP shall eliminate
variances from component tolerance or drift, and provide consistent operational
responses.
2.
All operating and protection parameters shall be firmware controlled, thus
eliminating a need for manual adjustments. The logic shall include system test
capability to facilitate maintenance and troubleshooting. Printed circuit board
replacement shall be possible without requiring calibration.
3.
Start-up and transfers shall be automatic functions.
B.
Digital Front Panel Display: The UPS control panel shall be a digital front panel display
that features an 8x40 (8 lines, each with 40 characters) backlit LCD display. The LCD
shall display UPS status, metering, battery status, alarm/event queue, active alarms and
UPS configurations. The front panel display shall show a system mimic diagram with an
outlined power path, current operating mode and event logs.
C.
Control Panel Indicators: The UPS control panel shall provide the following monitoring
functions with indicator LED’s:
1.
NORMAL: This shall indicate that the commercial AC utility or generator source
is supplying power to the rectifier and the inverter is supporting the critical load.
A text message shall indicate if the bypass line is not within tolerance.
2.
BYPASS: This shall indicate that the UPS has transferred the load to the bypass
circuit.
3.
BATTERY: This shall indicate that the commercial AC utility or generator source
has failed and the battery is supplying power to the inverter, which is supporting
