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Event Indication of a status change condition resulting from an alarm.
Fault Informs the User that the UPS is defective and may require intervention of CSS.
Freq. Frequency.
GCC Graphical Command Center (i.e., GUI, Graphical User Interface).
GND Electrical ground.
Hz Hertz, frequency measurement unit, 1Hz is one cycle per second.
Input Main AC input source.
Inverter An electrical circuit that generates an AC sinewave output from a DC input.
Inverter mode See “on-line” mode.
kVA KiloVolt-Ampere; a measure of apparent power, is equal to 1000 Volt-Ampere.
kVAR KiloVolt-Amperes reactive.
kW KiloWatt; a measure of real power, equal to 1000 watts.
L Line.
LCD Liquid Crystal Display.
LED Light Emitting Diode.
Load Connected to the UPS output, such as computer systems or critical devices.
Load protected The attached load is being supplied by the UPS module inverter output, and the battery is avail-
able in the event that incoming (utility) power is lost.
Load not protected The attached load is being supplied, but the battery system is unavailable.
Low battery shutdown The battery has reached the lowest permitted operating voltage, and the inverter has shutdown
(disconnecting the load) to protect the battery from damage due to further discharge.
Mains or Mains 1 Main AC input source.
Mains 2 Bypass AC input source.
MBC Optional maintenance bypass cabinet that attaches to the SSC (in shared systems).
MGE MGE UPS Systems, Inc.
M-M Multi-Module.
Module Refers to an UPS module. (Rectifier/battery charger, inverter, and attached battery cabinet.)
NNeutral.
NC Normally close.
NEC National Electrical Code.
NFPA National Fire Protection Association.
Glossary
Graphical Command Center
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