Owner`s manual

NFPA National Fire Protection Association.
NO. or No. Part number.
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.
PWM Pulse Width Modulation.
SCR Silicon controlled rectifier.
Shipping damage Any damage done to an article while it is in transit.
SPDT Single Pole Double Throw.
Static Transfer An solid state switching mechanism electronically controlled to pass AC power directly from the
utility to an output load.
Technician Refers to an electronic technician qualified to maintain and repair electronic equipment. Not
necessarily qualified to install electrical wiring.
Test connector DB-9 type connector on the LCD panel allowing MGE UPS Systems Customer Support Service
technician to access programmable and diagnostic features of the system.
VA Volt-amps, unit for apparent power measurement, equal V x I.
VAC or Vac Voltage of AC type.
VDC or Vdc Voltage of DC type.
Owner’s Manual
Glossary page g — 3