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Discuss problems with new pv system in the Solar PV Forum area at ElectrciansForums.co.uk.

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  1. dss456
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    dss456 New EF Member

    Dear all
    3 months ago I had professionally (fully acredited) instalation of 10 sanyo ht n240se10 PV panels on my roof. they feed into a Sunnyboy 2000hf inverter. From the very begining the output from the inverter has been very poor. When the electrician contacted SMA they took all the output figures + agreed with him that the power from the panels was fine. They said that it must be a faulty inverter. After waiting to get a replacement a new sunnyboy (same model) was fitted 3 weeks ago. Still the power generated has never gone above 750w (+that v briefly) and the total generated in almost 4 weeks is 29kwh (about 1/3 what I believe I should be getting) at this time of year given my annual estimate of 2160 kwh. The electrician says he is foxed + the desiegner says he has rechecked all the spec + there should be no problem-whilst obviously it is their problem to short out has anyone come across this before?
    david
    other figures on my cert are voc 327.2v + isc 1.4A
     
  2. JohnBoyZ
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    JohnBoyZ Regular EF Member

    I'm not saying this is the problem but Sanyo+HF Compatibility issues have been covered a while ago in a previous thread
    http://www.electriciansforums.co.uk...compatability-issues-sma-hf-sanyo-panels.html
     
    Last edited: Feb 22, 2012
  3. whinmoor
    Offline

    whinmoor Electrician's Arms

    Location:
    Wakefield/Leeds, West Yorkshire
    Business Name:
    Medoria Solar
    Consider a different brand of inverter. Fronius or Power One may be the way forward.
     
  4. BruceB
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    BruceB Electrician's Arms

    Location:
    Bath/Bristol
    Or update the firmware in the inverter to have optitrac global peak running.
     
  5. liquidity
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    liquidity Regular EF Member

    Location:
    UK
    Just to get the complete picture - what is the orientation of the panels, any shading and how many strings?
     
  6. Nutmeg2
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    Nutmeg2 Guest

    I have a similar installation and have definitely had generation of well over 1000 W over the middle of the day on sunny days. My panels face almost due West. I live on west side of London.
     
  7. dss456
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    dss456 New EF Member

    orientation south 1 string no significant shading
     
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