MGE UPS Systems 40-150kVA user manual Nec

Installation and User Manual

Module	Refers to individual power inverter module.
N	Neutral.
NC	Normally closed.
NO	Normally open.
NEC	National Electrical Code.
NEMA	National Electrical Manufacturers Association.
NFPA	National Fire Protection Association.
PF	Power factor.
PN	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.
PCA	Printed circuit assembly.
PCB	Printed circuit board.
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.
UL	Underwriter's Laboratories, Inc.
UPS	Uninterruptible Power Supply or Uninterruptible Power System.
V	Volts
VA	Volt amperes
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.
ve	Battery voltage.
Via	By way of.

86-160310-00 E00 Glossary G — 3