Remote Area Power Systems

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.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.
3 - 5 kW RAPS Specifications

Common to all units:
  • Automatic Bypass: Supply is maintained by the generator if the inverter is off line.
  • 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.* AC output voltages of 110, 120, 220 and 230 are available on application.
    * Other DC voltages between 24 VDC and 120 VDC are available on application.

Model RAP-3-24-1 RAP-3-48-1 RAP-5-48 RAP-5-110 RAP-5-120
PDF of Brochures of items
Input voltages 24 VDC 48 VDC 48 VDC 110 VDC 120 VDC
Output voltage & frequency* 240 Vac
50 or 60 Hz
240 Vac
50 or 60 Hz
240 Vac
50 or 60 Hz
240 Vac
50 or 60 Hz
240 Vac
50 or 60 Hz
Continuous output @ 40°C 2.7 kW 3 kW 5 kW 5 kW 5 kW
1 hour rating @ 40°C 3.2 kW 3.6 kW 6 kW 6 kW 6 kW
½ hour rating @ 40°C 3.5 kW 3.9 kW 6.5 kW 6.5 kW 6.5 kW
Surge rating 5.4 kW 6 kW 10 kW 10 kW 10 kW
Maximum charge current 90 A 35 A 83 A 35 A 35 A
Peak efficiency > 90 % > 92 % > 92 % > 94 % > 94 %
Power factor range 0 - 1 0 - 1 0 - 1 0 - 1 0 - 1
Idle power 35 W 35 W 50 W 50 W 50 W
Standby power < 10 W < 10 W < 10 W < 10 W < 10 W
Integrated isolation AC/DC cct breaker cct breaker cct breaker cct breaker cct breaker
Indicators LED & LCD LED & LCD LED & LCD LED & LCD LED & LCD
Inverter mass 60 kg 60 kg 70 kg 70 kg 70 kg
Data logging Yes Yes Yes Yes Yes
Internal Gen contactor 6 kVA 6 kVA 10 kVA 10 kVA 10 kVA
External Gen contactor optional optional optional optional optional
Remote access RS232 RS232 RS232 RS232 RS232

15 - 40 kW 3 PhaseRAPS Specifications
Common to all units:
  • Automatic Bypass: Supply is maintained by the generator if the inverter is off line.
  • Data Logging Remote Access: 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
Model RAP-10-108
RAP-10-120
RAP-12-108
RAP-12-120
RAP-15-120
PDF of Brochures of items
Input voltages 108 / 120 VDC 108 / 120 VDC 120 VDC
Output voltage & frequency* 240 Vac
50 or 60 Hz
240 Vac
50 or 60 Hz
240 Vac
50 or 60 Hz
Continuous output @ 40°C 10 kW 12 kW 15 kW
1 hour rating @ 40°C 12 kW 14 kW 18 kW
½ hour rating @ 40°C 13 kW 15.6 kW 19.5 kW
Surge rating 22 kW 22 kW 30 kW
Maximum charge current 70 A 80 A 100 A
Peak efficiency > 94 % > 93 % > 93 %
Power factor range 0 - 1 0 - 1 0 - 1
Idle power 100 W 120 W 150 W
Standby power 30 W 30 W 30 W
Autostart on demand Yes Yes Yes
Mimimum start load 12 - 15 W 12 - 15 W 12 - 15 W
Integrated isolation AC/DC cct breaker cct breaker cct breaker
Indicators LED & LCD LED & LCD LED & LCD
Inverter mass 260 kg 260 kg 280 kg
Cooling system 5 fans 5 fans 5 fans
Data logging Yes Yes Yes
Internal DC cct breaker Yes Yes Yes
Internal Gen contactor 20 kVA 20 kVA 20 kVA
Remote access RS232 RS232 RS232


15 - 40 kW 3 Phase RAPS Specifications

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
Model RAP-15-48 RAP-15-108
RAP-15-120
RAP-20-108
RAP-20-120
RAP-25-108
RAP-25-120
RAP-30-108
RAP-30-120
RAP-40-120
PDF of Brochures of items
Input voltages 48 VDC 108/120 VDC 108/120 VDC 108/120 VDC 108/120 VDC 120 VDC
Operating DC voltage range 42-62 V 100-158 V 100-158 V 100-158 V 100-158 V 100-158 V
Continuous output @ 40°C 15 kW 15 kW 20 kW 25 kW 30 kW 40 kW
1 hour rating @ 40°C 18 kW 18 kW 24 kW 30 kW 36 kW 48 kW
½ hour rating @ 40°C 19.5 kW 19.5 kW 26 kW 32.5 kW 39 kW 52 kW
Surge rating 30 kW 30 kW 40 kW 50 kW 60 kW 80 kW
Maximum charge current 250 A 120 A 150 A 200 A 250 A 300 A
Peak efficiency > 91 % > 93 % > 93 % > 93 % > 93 % > 93 %
Power factor range 0 - 1 0 - 1 0 - 1 0 - 1 0 - 1 0 - 1
Idle power < 150 W < 150 W < 200 W < 250 W < 300W < 400W
Integrated isolation AC/DC cct breaker cct breaker cct breaker cct breaker cct breaker cct breaker
Indicators LED & LCD LED & LCD LED & LCD LED & LCD LED & LCD LED & LCD
Inverter mass 210 kg 290 kg 310 kg 330 kg 350 kg 390 kg
Internal Gen contactor no < 30 kVA < 30 kVA no no no
External Gen contactor required optional optional required required required

Standards:
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.