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Green Renewable Energy Forum
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Multiple strings vs Higher voltage single string
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<blockquote data-quote="glenns" data-source="post: 530315" data-attributes="member: 34850"><p>Hi Guys, bit of advice from the solar experts please...</p><p></p><p>System has been up and running for a month or so, still waiting on the batteries but I'm noticing that my second string (PV2) isn't coming online as soon as it could. I'll give a brief rundown of the system to explain, I have 8 panels split into 2 strings, they are on a shallow pitch roof, one side facing SSE(PV1) the other NNW(PV2). With the lovely weather both strings are getting plenty of sun and can produce power as early as 6am but PV2 isn't coming online, just sits showing 4-5v until much later in the day. If I manually cycle the breaker the PV2 will spring into life.</p><p></p><p>I've checked the connections, all look good.... is this normal behaviour?? would I be better running all the panels in series on a single string or should I be investigating potential connection issues ?</p><p></p><p>The Inverter is RHI-6K-48ES-5G so is capable of handling the 8 panels in a single string but I had read it was better to split the load across the inputs.</p><p></p><p>TIA <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite22" alt="(y)" title="Thumbs up (y)" loading="lazy" data-shortname="(y)" /></p></blockquote><p></p>
[QUOTE="glenns, post: 530315, member: 34850"] Hi Guys, bit of advice from the solar experts please... System has been up and running for a month or so, still waiting on the batteries but I'm noticing that my second string (PV2) isn't coming online as soon as it could. I'll give a brief rundown of the system to explain, I have 8 panels split into 2 strings, they are on a shallow pitch roof, one side facing SSE(PV1) the other NNW(PV2). With the lovely weather both strings are getting plenty of sun and can produce power as early as 6am but PV2 isn't coming online, just sits showing 4-5v until much later in the day. If I manually cycle the breaker the PV2 will spring into life. I've checked the connections, all look good.... is this normal behaviour?? would I be better running all the panels in series on a single string or should I be investigating potential connection issues ? The Inverter is RHI-6K-48ES-5G so is capable of handling the 8 panels in a single string but I had read it was better to split the load across the inputs. TIA (y) [/QUOTE]
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Multiple strings vs Higher voltage single string
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