Solar Grid Interactive Inverters

Solar Grid Interactive Inverters provide a means of directly connecting DC renewable sources such as solar photovoltaic arrays and small wind turbines to the electricity grid. Grid connection ensures that all renewable energy generated can be utilised.

The Solar Grid Interactive inverter uses similar hardware and software as our remote area power systems, with solar panels to be directly connected to the DC side of the inverter. Provided the grid supply is present and within tolerance, the inverter starts when solar power becomes available. It controls the voltage presented to the panels to optimise power output and supplies AC power to the network.

When the array output falls below the level required to meet inverter losses, the inverter shuts down until isolation rises sufficiently to justify restarting the inverter.
The inverter automatically synchronises with the network; no additional controls are required.

The inverter will shut down if the network supply fails either to a short circuit or an open circuit, or if the voltage or frequency of the network falls out of tolerance

3 - 6 kW Solar Grid Interactive Inverter

Common to all units:
  • 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.
    Refer to sales staff for details of compliance.

Model SGI-3-110 SGI-4-110 SGI-5-110 SGI-6-110
Input voltages 110 VDC 110 VDC 110 VDC 110 VDC
Operating DC voltage range 98-168 98-168 98-168 98-168
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
MMPT working range 105 - 155 VDC 105 - 155 VDC 105 - 155 VDC 105 - 155 VDC
Continuous output @ 40°C 3 kW 4 kW 5 kW 6 kW
1 hour rating @ 40°C 3.6 kW 4.8 kW 6 kW 7.2 kW
½ hour rating @ 40°C 4 kW 5.2 kW 6.5 kW 7.8 kW
Peak efficiency > 94 % > 94 % > 94 % > 94 %
Harmonic Distortion < 4% < 4% < 4% < 4%
Off line losses < 10 W < 10 W < 15 W < 15 W
Integrated isolation AC/DC cct breaker cct breaker cct breaker cct breaker
Indicators LED & LCD LED & LCD LED & LCD LED & LCD
Inverter mass 60 kg 65 kg 70 kg 72 kg
Data logging RS232 RS232 RS232 RS232


10 - 15 kW Solar Grid Interactive Inverter

Common to all units:
  • 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
  • *AC output voltages of 110, 120, 220 and 230 are available on application. Refer to sales staff for details of compliance.

  • Model SGI-10-110 SGI-12-110 SGI-15-110
    Input voltage 110 VDC 110 VDC 110 VDC
    Operating DC voltage range 100 - 168 VDC 100 - 168 VDC 100 - 168 VDC
    Output voltage & frequency 240 Vac
    50 or 60 Hz
    240 Vac
    50 or 60 Hz
    240 Vac
    50 or 60 Hz
    MPPT working range 105 - 155 VDC 105 - 155 VDC 105 - 155 VDC
    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
    Harmonic distortion < 4 % < 4 % < 4 %
    Peak efficiency > 94 % > 93 % > 93 %
    Off line losses < 20 W < 20 W < 20 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
    Remote access RS232 RS232 RS232


    12.5 - 75 kW Solar Grid Interactive Inverter

    Common to all units:
    • 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 APSGI-
    12-120-3
    APSGI-
    22-120-3
    APSGI-
    30-240-3
    APSGI-
    50-360-3
    APSGI-
    75-600-3
    Input voltages * 120 VDC 120 VDC 240 VDC 360 VDC 600 VDC
    Operating DC voltage range 110 - 360 V 110 - 360 V 220 - 360 V 300 - 380 V 500 - 700 V
    Continuous output @ 40°C 12.5 kW 22 kW 30 kW 50 kW 75 kW
    1 hour rating @ 40°C 14.4 kW 26.4 kW 36 kW 60 kW 90 kW
    ½ hour rating @ 40°C 16.25 kW 28.6 kW 39 kW 65 kW 97.5 kW
    Surge rating 25 kW 44 kW 60 kW 100 kW 125 kW
    Peak efficiency > 90 % > 90 % > 93 % > 94 % > 96 %
    Power factor range 0 - 1 0 - 1 0 - 1 0 - 1 0 - 1
    Total Harmonic Distortion < 4% < 4% < 4% < 4% < 4%
    Standby power < 30 W < 50 W < 50 W < 50 W < 50 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 270 - 300 kg 270 - 300 kg 270 - 300 kg 270 - 300 kg 60 kg (no trans.)
    Size WHD (mm) 700 1100 500 700 1100 500 700 1100 500 700 1100 500 700 1100 500