Download LACCD IT Design Standards

LACCD IT Design Standards 2009
With the complete loss of the digital and analog network communications, all UPS modules shall have
the capability to support the critical load up to their rated load; however capability to switch modes to
static bypass will be inhibited.
With the complete loss of one or both of the UPS conmunication networks, each UPS module shall have
the capability to detect an internal failure and remove itself from the paralleled UPS bus.
Control in this method eliminates the need for system wide synchronization control signals, therefore
eliminating any possibility of a synchronization control failure causing the entire system to go off line or
remove power from the critical load.
It shall not be possible for a failure in the controls of one UPS power module to propagate a failure into
other UPS power modules.
Front Panel Display: The UPS shall include a front panel display consisting of a graphical LCD display with
backlight, four status LED’s, and a four-key keypad. The LCD shall display a mimic screen of power flow
through the UPS system when programmed for this function. The keypad keys shall be menu driven per
the function being performed.
Graphical LCD display: Includes basic language (English and local selectable languages), display of unit
function and operating parameters. It shall be used to signify the operating state of the UPS, for
indicating alarms, for changing operations control parameters and set points. The graphical display shall
have a real time clock which will stamp events with event type and time information, reviewable in the
logged data menus.
Local language packages available:
English, Spanish, French, German, Portuguese (Standard)
English, Finnish, Norwegian, Swedish, Russian
English, Hungarian, Polish, Romanian, Czech, Danish
English, Greek, Turkish, Bulgarian
English, Korean
English, Chinese
Four status LED’s, which indicate:
Alarms, with a red LED
On Battery, with a yellow LED
On Bypass, with a yellow LED
Enterprise Data Center Design – Std 003-0909
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