Installation and User Manual

 

 

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.

N

Neutral.

NC

Normally close.

NO

Normally open.

NEC

National Electrical Code.

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.

PCB

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 direct-

 

ly from the utility to an output load.

Technician

Refers to an electronic technician qualified to maintain and repair electronic equip-

 

ment. 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.

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.

86-133060-00 A00

Glossary

G — 3