Selectronic Australia

Power Solutions Australia RAPS Inverters

Generator Interactive Inverters provide mains quality power efficiently and automatically. The system uses batteries to store energy for periods when power demand is low, and automatically starts a diesel generator set when demand is high or when the batteries require recharging.

This mode of operation ensures that the diesel fuel is efficently converted to electricity by only running the generator at medium to heavy loads and only for a small proportion of the day. Power is drawn from the batteries and converted to a mains quality sine wave by a microprocessor controlled inverter. While the generator is operating, it supplies power to the load and the inverter charges the batteries. However if heavy loads occur, both the inverter and the generator can supply the load, giving a peak capacity equal to the sum of the inverter and the generator ratings. This allows smaller generators to be used compared to inverter charger systems.

An alphanumeric LCD display allows inverter variables to be displayed and allows suitably qualified technicians to adjust operating parameters to optimise system performance.

Please note that as of March 2011, all Power Solutions Australia inverters are discontinued lines.
The specification information here is provided for reference only.

Product Range - Specifications



15kW units:

User Manual (542 kb PDF)
Model RAP-15-120
Input voltages 120 VDC
Output voltage & frequency 240 Vac
50 or 60 Hz
Continuous output @ 40°C 15 kW
1 hour rating @ 40°C 18 kW
½ hour rating @ 40°C 19.5 kW
Surge rating 30 kW
Maximum charge current 100 A
Peak efficiency > 93 %
Power factor range 0 - 1
Idle power 150 W
Standby power 30 W
Autostart on demand Yes
Mimimum start load 12 - 15 W
Integrated isolation AC/DC cct breaker
Indicators LED & LCD
Inverter mass 280 kg
Cooling system 5 fans
Data logging Yes
Internal DC cct breaker Yes
Internal Gen contactor 20 kVA
Remote access RS232


20 - 40 kW units:

PSA Inverter
User Manual (572kb PDF)

Model RAP-20-120
Input voltages 120 VDC 120 VDC 120 VDC
Operating DC voltage range 100-158 V 100-158 V 100-158 V
Continuous output @ 40°C 20 kW 30 kW 40 kW
1 hour rating @ 40°C 24 kW 36 kW 48 kW
½ hour rating @ 40°C 26 kW 39 kW 52 kW
Surge rating 40 kW 60 kW 80 kW
Maximum charge current 150 A 250 A 300 A
Peak efficiency > 93 % > 93 % > 93 %
Power factor range 0 - 1 0 - 1 0 - 1
Idle power < 200 W < 300W < 400W
Integrated isolation AC/DC cct breaker cct breaker cct breaker
Indicators LED & LCD LED & LCD LED & LCD
Inverter mass 310 kg 350 kg 390 kg
Internal Gen contactor < 30 kVA no no
External Gen contactor optional required required
* DC operating voltage range 92% to 130% of nominal.

Common to all units:

  • Automatic Bypass: Supply is maintained by the generator if the inverter is off line.
  • Low distortion, high power load presented to generator during charging for best generator performance.
  • All units available in 220 / 230 / 240 VAC 50 or 60 Hz output (240 / 415, 230 / 380V three phase plus neutral connection). 120 / 208 VAC on application.
  • Data Logging Remote Access: RS232 port, standard data logging and remote access via modem, satellite, GSM and CDMA technology.
  • Cooling: Convection and thermostatically controlled fans.
  • Enclosures: Electronics IP50, transformer and heatsink IP23. Weatherproof enclosures or rack mounting are available on request.
  • Protection: Over current trip, over voltage, over temperature, reverse polarity, fast electronic trip, transient over voltage protection.


All inverters are designed to AS3100 / AS2604 / AS61000.3.5 and the draft AS/NZ standard for grid connect inverters.
Low distortion, high power presented to to generator during charging for best generator performance.
Refer to sales staff for details of applicable compliance testing.


Brochures for all PSA inverters can be found here.

Remote Link Software

Remote link can be found here.

Application Notes

Application notes for Remote Area Power Systems inverters are available in PDF format. To view these documents, you will need Adobe's Acrobat Reader.

RAP Operation.pdf

This is a general description of RAPS inverter operation.

PSA Inverter Programming Example.pdf

This is a worked example, showing how to set up the parameters of a RAPS inverter for a solar-diesel remote power system. It was prepared by the Renewable Energy Centre at the Brisbane North Institute of TAFE, as part of their Hybrid Energy Systems course.