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Discuss problems with new pv system in the Solar PV Forum area at ElectriciansForums.net

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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
 

JohnBoyZ

Regular 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
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/photovoltaic-solar-panels-green-energy-forum/41476-compatability-issues-sma-hf-sanyo-panels.html
 
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liquidity

Regular EF Member
Just to get the complete picture - what is the orientation of the panels, any shading and how many strings?
 
N

Nutmeg2

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.
 
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