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Green Renewable Energy Forum
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testing pv arrays
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<blockquote data-quote="g.bird" data-source="post: 462940" data-attributes="member: 30086"><p>hi guys i have solar pv on my roof,with a dc insulation fault, i suspect its due to water ingress.there are two strings,thats 2 pairs of wires going up to the pannels.iv tested each pair with a multitester, having firstly disconected from the isolators and are geting the following .L=N 282V,L=E 204 ANDN=E 68V...THERE IS NO EARTH CONECTION TO THE PV ARRAY.for testing purposes iv used the earth connection of the main supply feeding the inverter/dc isolator,,,anybody got any ideas/help...on these findings..the system has shut down ,and will not resstart because of this fault...what is the cure.cheers</p></blockquote><p></p>
[QUOTE="g.bird, post: 462940, member: 30086"] hi guys i have solar pv on my roof,with a dc insulation fault, i suspect its due to water ingress.there are two strings,thats 2 pairs of wires going up to the pannels.iv tested each pair with a multitester, having firstly disconected from the isolators and are geting the following .L=N 282V,L=E 204 ANDN=E 68V...THERE IS NO EARTH CONECTION TO THE PV ARRAY.for testing purposes iv used the earth connection of the main supply feeding the inverter/dc isolator,,,anybody got any ideas/help...on these findings..the system has shut down ,and will not resstart because of this fault...what is the cure.cheers [/QUOTE]
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testing pv arrays
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