SECTION VI
Glossary
Page 6.3
BP+2.9X
11/95
REAL POWER (kW) -
The portion of apparent power which actually performs work or generates heat.
RECHARGE -
A dc voltage applied to a battery for a given period of time which will equalize
unevenly charged cells. After an emergency discharge, it will restore the batteries to
full charge.
RECTIFIER/CHARGER -
A major component of the UPS. Its primary function is to change AC to DC for the
inverter input. It also supplies current to recharge or maintain the charge of the
batteries.
REMOTE ALARM CONTACTS -
Relay switch! contact arrangement which opens or closes in response to an alarm
condition within the UPS. The contacts are connected to terminals which are easily
accessible to the customer. They provide the ability to remotely sense an alarm
condition.
STATIC BYPASS SWITCH (SBS) -
A major component of the UPS. Connects the UPS Input to the load if the rectifier
and/or the inverter become unavailable or unacceptable.
TRANSFER -
A static bypass switch operation which exchanges load power sources from the UPS
to utility power.
UPS-
Uninterruptible power system. UPS are on-line units which deliver power to the
critical load from the inverter on a full-time basis. A power outage does not require
load switching manually since the battery instantaneously takes over to supply dc
power to the inverter. Due to the ac to dc to ac conversion, most UPS units offer
superior ac transient noise suppression.
WYE OUTPUT -
A wiring configuration. Wye utilizes four wires to furnish a neutral. The output of
the UPS is a WYE configuration.
