Solar Power World

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The new multi-tracking (MT) series adds three devices to Sputnik Engineering’s product portfolio in the power output range of 10 to 15 kilowatts. Unlike the smaller string inverters of the SolarMax S series, the MT series feeds the grid with three-phase power.

The maximum feed voltage of the MT inverters is 900 volts. This permits longer modular strings than before, which means a reduced need for wiring and less line loss as well as greater flexibility. The new multi-string concept also permits building plants with only one inverter on roofs whose surfaces, orientations and inclinations vary. The European efficiency of the inverters is 97,5 percent.

Full power at temperatures as high as 50 degrees

Sputnik’s developers have again optimised their cooling concept. At ambient temperatures up to 50 degrees Celsius the inverters still deliver full power. The protection type IP54 permits indoor as well as outdoor installation. And installation is simplified by the device’s light weight and the installation bracket included in the delivery. DC circuit breaker, graphics display with integrated data storage, a status signalling contact along with the usual communications interfaces RS485 and Ethernet are already integrated.

The new inverters are certified by the VDE Institute and bear the GS mark of conformity. A renewal of the five-year standard warranty to ten or twelve years is available as an option. Sputnik Engineering will unveil its new developments at the Intersolar trade fair, which runs from 9 to 11 June in Munich.

SolarMax MT series technical data

All specifications are preliminary, from April 2010.