Electrical Power & Protection


Flexible solar inverters from Siemens

July 2011 Electrical Power & Protection

The Siemens Industry Automation Division has introduced a flexible range of solar inverter models designed for use all over the world. The Sinvert PVS 800 series includes devices with rated outputs of 680, 720, 760 and 800 kW that can cover a range up to 3200 kW in a master-slave combination. Certification in compliance with UL, CSA and IEC allows global use of the inverters. Thanks to high rated output power and peak efficiency, the new models make an important contribution to ensuring cost-effective medium and large photovoltaic power plants.

Backed by the comprehensive certification, the inverters support the 50 Hz grid frequency common in Europe and large parts of Asia, as well as the 60 Hz frequency in North America. The Sinvert PVS 800 series can also be used for crystalline and thin-film modules for which they have four DC connections. The master-slave procedure that allows up to four devices to be combined into one unit, results in well balanced component utilisation and thus long service life. Master-slave combinations also offer improved matching of the rated output of the inverters to the yield of the connected fields, thus optimising efficiency.

The models of the Sinvert PVS 800 series have a touch screen for local operator input and standardised communication permits the forwarding of measured data to a control centre as well as remote control of the inverter. Like the entire Sinvert PVS range, the new models are supplied in photovoltaic containers for immediate operation following delivery. In addition, the new devices can be equipped with an external isolator switch on the enclosure, allowing power flow to be interrupted manually. Special dust or saline filters are available for the containers when used in particularly dry locations or close to the sea. The new Siemens inverters also comply with the medium-voltage directive issued by the German Association of Energy and Water Industries (BDEW) with all the requirements including active power control.

For more information contact Keshin Govender, Siemens Southern Africa, +27 (0)11 652 2412, keshin.govender@siemens.com, www.siemens.co.za



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