Diodes

In Solar Modules by African Energy

In the last quarter we’ve had two cases of “failed” Suntech modules.  This was strange to us because in seven years of working with Suntech we have never had a complaint.  What we found out, in fact was that the modules were perfectly fine, but the diodes had been blown.  The suspected cause of this is a very near lightning strike and perhaps inadequate earthing.  (Although Patrick and I once blew diodes in a module by accidentally reversing the polarity on a battery direct to the module – so we don’t rule out one of those “events” either.)  The good news is that the diodes are easy to replace in Suntech modules – they are held in by a tension clamp and can easily be changed in the field.  We have some spares in stock here, or you can probably find them at your local electronics bazaar…..