Your UPS functions
to supply AC electrical power to your
load. The UPS ahvays operates in one of three modes:
l
In
mode, the critical load is supplied by the inverter, which
derives its power from
utility AC power.
In this mode, the
rectifier also provides charging current for the battery.
In
mode, the battery cabinet provides DC power, which
maintains
operation. The battery
the critical load.
l
In
mode, the critical load is directly supported by the utility
through an isolation
The UPS continually monitors
and the incoming
power, and automatically
between these modes as required,
no operator
The
sophisticated detection and switching logic inside the UPS ensures that operating mode
changes are automatic and transparent to the critical load. The UPS
operating
modes in response to these
l
A command is an intervention that is externally initiated by an operator
or by some
A command causes the UPS to switch
operating modes: it
does not require any further
by you.
l
A
is a minor
event that may or may not
your
attention.
l
An a/arm is a system event that requires immediate operator
intervention.
System events,
horns, and indicator lights are described in ‘Responding to System
Events’ on page 45.
Plus
UPS Operators Manual
9
Summary of Contents for Plus 80
Page 1: ...0 Powerware Plus 80 Unintemqtibk Power Supply Operation 164200252 Rev A...
Page 55: ...a 1 a Pe WNP U N I N T E R R U P T I B L E P O W E R S Y S T E M S I i b I EXlDE ELECTRONICS...
Page 88: ...I I I I I I IO I I I I b I I NOTES 10 Powemam Plus 60 UPS ln stallation Manual...
Page 147: ...2 I FRONT Powerware Plus 80 UPS installation Manual A 13...
Page 153: ...5 61 CRE47Eo By L ORLANDO RMWON A ONE B 269r Powemare Plus 90 UPS lnstailation Manual A 19...
