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kVA KiloVolt-Ampere; is equal to 1000 Volt-Ampere.
L Line.
LCD Liquid-Crystal Display unit.
LED Light Emitting Diode.
Load protected The attached load is being supplied by the UPS module inverter output, and the
battery is available 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
shut down (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.
mA Milliampere.
MAX. Maximum.
MCM Thousand circular mil; standard wire sizes for multiple stranded conductors over 4/0
AWG in diameter. M is from Roman numerical system indicating 1000.
Module Refers to individual power inverter module.
NNeutral.
NC Normally close.
NO Normally open.
NEC National Electrical Code.
NFPA National Fire Protection Association.
NO. or No. Part number.
On-battery operation The attached load is being supplied by the stored energy in the battery system.
On-line mode Inverter output power is the primary energy source to load.
Off-line mode Inverter output is off, and the load connected at the inverter output receives power
from utility line via a static transfer switch or maintenance bypass relay.
OSHA Occupational Safety and Health Agency.
PCB Printed circuit assembly.
PCB Printed circuit board.
PWM Pulse Width Modulation.
Q1 UPS input isolation circuit breaker.
Glossary
page g — 3
Users Manual