Instruction Manual

2 3
Inverter Class 11WR19A
The Concept
•Modulardesignfacilitatesworldwideusage
•Supportforcompact,integratedairconditioning
systems, including a tailor-made, cost and energy-
efficient drive system for fans and compressors
•Integratedpowersupplyandairconditioning
system constitute an intelligent, symbiotic unit
•Highefciencywhengeneratingpowersupplies
from the overhead line
PoAC Promotes Green Technology
•Variablespeedmanagementoffansandcompressors
in particular provides highly efficient cooling in the
partial load range and very good thermal comfort in
the vehicle
•Signicantpotentialsavingsforelectricpower
•Energysavingsofupto50%forunitsfeaturing
compressors with a high-speed setting range
•Lessnoiseinthepartialloadrangeresultingin
improved acceptance of new vehicle fleets by the
travelling public
•Savesresources,savesvaluableenergyandreduces
life-cycle costs
Input
Operating Voltages 0.75 kV / 1 kV≈, 1.5 kV≈
Rating Classes 17.5 & 35 kVA
Converter Type Isolated
Output
1 or 2 Independent 3-Phase Networks up to 480 V
Voltage Waveform Sine
Configurations
Volume 120 / 165 l
Weight 65 / 100 kg
Benefits of Liebherr-PoAC
•“Plug-&-Play”solution
•Utilisesthevehicle’sexistingelectricalinterfaces
•Convertspowerfromtheoverheadlineintoalternat-
ing current, and uses the high-voltage cables normally
used for the heating system to distribute power
•Hasconnectionstothevehiclebatteryandvehiclebus
•Usesintelligentdiagnosticsignallingandmonitoring
routines to increase reliability and hence availability
•Isbuiltinpartialredundancy.50%oftheoutputpower
are still available even if a branch current converter fails
•Theuseofliquid-cooledmodulesmeanstheconverter
cooling system in the Liebherr-PoAC units can be
conveniently combined with the refrigerant re-cooling
function in the air conditioning system
•Noneedforlarge,heavyrefrigerationunits,fansand
air ducts. Lightweight, compact unit combinations are
possible that save weight and space in the vehicle
•Costslessthanstandardsolutionswithseparateunits
once all associated costs for the standard solution are
considered
•Comparedwithstandardsolutions,PoACoffers
enhanced performance in terms of cost, weight
and space requirements, facilitating air conditioning
concepts with increased redundancy
PoAC Basic Data
Liebherr-Powered Air Conditioning (PoAC)
Inverter Class 11WR15A Power module inside roof
mounted HVAC 35 kVa
Converter for light rail vehicle 0.75 kV / 35 kVa Converter for LRV 0.75 kV / 17.5 kVa Integrated HVAC Converter 40 KVA / 35 KW for DB Passenger Coach Bpmz
291
Liebherr-Transportation Systems manufactures innovative, highly integrated power supply systems for any
air conditioning units in rail vehicles (roof-mounted, underfloor and as switch gear integrated in the vehicle).