EnerSys Alpha Cordex CXC HP - Inverter Systems; Introduction to Inverter Systems; Components of a T2 S Inverter System; Figure 7-1 Single T2 S Inverter System Components

7. Inverter systems
Thissectionprovidesanoverviewofinverters,howtheyfunctionandhowtoconfigureaninverter
system.
7.1. Introduction to inverter systems
AninvertersystemtakesbothACand48Vdcinputandconvertsitto120Vacoutputvoltage.The
invertersystemcanoperateinoneofseveralmodes:
•
Line (AC-AC): WhenACinputispresenttheinvertersnormallytakethisvoltageandconvertitto
ACattheoutput.
•
Inverter (DC-AC): WhenACinputislost,theinverterstaketheDCinputvoltageandconvertitto
ACattheoutput.
•
Bypass Mode: Whenthemaintenancebypassswitchhasbeenusedtobypasstheinvertersand
directlyconnecttheACinputtotheoutput.
Tomonitorandinteractwiththeinvertersystem,thecontrollercommunicateswithasub-controllerscalled
aT2S.
7.1.1. Components of a T2S inverter system
AninvertersystemtypicallyconsistsofanACsource,aDCsource,inverters,anACload,inputbreakers,
outputbreakers,andabypassswitch.Averylargeinvertersystemmaynothaveabypassswitchandwill
usebreakerstoperformthemaintenancebypassfunction.
Figure 7-1 SingleT2Sinvertersystemcomponents
CXC HP
ADIO
AC Source
Rectifiers
CAN Bus
DC Bus
Inverters
T2S
Bypass Fuse
AC Output Breaker
Maintenance
Bypass Switch
AC Load
AC Input Breaker
Battery LVD
Battery Shunt
Battery
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