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Intersolar: Sputnik unveils two central solar inverters

Swiss Sputnik Engineering launched two solar central inverters with greater outputs as part of its SolarMax TS series at Intersolar in Munich, Germany this week.

The SolarMax 300 TS solar inverters have a rated output of 300 kW and operate in the MPP range of 430-800 V.

Sputnik has boosted the efficiency of the previous model, the SolarMax 300 C solar inverter, from 94.8% to 95.5%.

Unlike the SolarMax 300 TS, Sputnik's SolarMax 330TS SV operates without a low-voltage transformer.

Up to four of the new 330 kW inverters can be integrated into a SolarMax power station and their power fed directly into the medium-voltage mains via a medium-voltage transformer.

As with other SolarMax-TS series devices, the electronic system monitors the IGBT switches of the two new solar central inverters on the power unit.

Sputnik also replaced the electrolyte capacitors with film capacitors where possible to increase the devices’ lifespan. The optional earth-kit also permits the inverters to work in combination with thin-film or back-side contacted solar modules.

Technical data

SolarMax 300 TS
SolarMax 330TS SV
AC rated output
300 kW
330 kW
MPP range
430 to 800 V
450 to 800 V
Max. DC voltage
900 V
900 V
European efficiency
95.5 %
97 %
Max. efficiency
96.3 %
98 %
2x (120 cm x 80 cm x 197 cm)
120 cm x 80 cm x 197 cm
Weight approx.
2700 kg
1200 kg
Protective type
IP 20
IP 20
Ambient temperature
-20°C ... 50°C
-20°C ... 50°C

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Energy infrastructure  •  Solar electricity