riso

Risø DTU National Laboratory for Sustainable Energy (Danish: Risø DTU Nationallaboratoriet for Bæredygtig Energi) is a scientific research organization north of Roskilde, Denmark.
The Risø DTU organisation was founded in 1956 and dissolved on 1 January 2012. The location is now known as DTU Risø Campus and the buildings are home to a number of institutes under the Technical University of Denmark (DTU) and separately is also home to Aarhus University Dept of Environmental Science and part of Dept of Bioscience. Risø covers an area of more than 2.6 square kilometres.

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  1. S

    Aurora Power-One - zero Riso.

    Hi all. Long story short - my Aurora P-One developed the common E031 fault. I carried out the repair myself (ex electronics teacher), replacing the 4 relays. On refitting, it returned a Riso - 0Mohm fault. Assuming I'd messed up somewhere, I bought an exchange unit from a reputable source, and...
  2. G

    Aurora 5000 with RISO LOW 0,1, MOHM problem

    Two Auroras 9 years old 3000 and 5000 with 4 strings total. Only 5000 has RISO LOW GIF Red problem. Even after switching strings between 3000 and 5000 the problem remains on the Aurora 5000 and all strings seem to be OK.. Any suggestions what may be wrong with this unit installed in very dry place.
  3. goodwell

    Riso fault Power-One Aurora

    I have a small Pv farm 5KW. Some months ago inverter started to measure low Riso<1MΩhm (0.8). I tried to test each string alone and with one the inverter read good Riso and started normally. The other had very low Riso. I tried to check the two pv strings but both have same Voc 340Volts. So I...

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