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Rups

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Everything posted by Rups

  1. Thanks. Got those and rechecked all the connections. All fine but still getting the fault.
  2. Hi Jaco. Thanks for your comments and for the firmware. Voltronics finally replied to me and sent over the firmware as well on Tuesday. However it took me a couple of days to find an old pc with serial ports. I unparalleled the inverters today and installed both master and slave firmware on all three inverters today. All seemed ok until I tried to parallel them again. On one of the inverters I am now getting fault 80, CAN fault every time I try to parallel it with the other 2. Anyone else had this fault before? I have again emailed voltronics but doubt they will revert any time soon. I don’t understand why they are not willing to provide voice support and why each revert takes them days and is light on solutions and mostly just repeats what is already in the manual. Never experienced this with any other inverter manufacturers. On a separate note I read the comments regarding the DC boards. 2 inverters have become faulty during this project (I initially had 6 in stock and now only have one left). Both show fault 3 now and wont work. I have again written to voltronics asking why the inverters i have did not have the new dc boards sent over. Not sure i will hear back from them though. Let’s see. thanks again for your help on this
  3. Hi Chris. Thanks for your thoughts. We are going to change the earthing design to one main earth pit as per the specs
  4. Thank you very much Jaco for coming back to me. I was wondering the same on the module earthing. I think I will try earthing the frame. Look forward to hearing from you regarding the firmware. Really has been a painful few weeks. Regards
  5. Hi all. I am hoping you can help me after 2 very frustrating weeks of trying to resolve issues I am having with a system setup. I hope I am able to explain this properly. I have 3 strings of 12 Amerisolar 265 modules. Each string is connected to a Infinisolar Super 4kw inverter. As per the manual, the modules are not earthed. I have paralleled the 3 inverters. They are all programmed in off grid mode 1. I have paralleled 6 2.5kwh coslight lithium ion batteries on a busbar to give me a 15kwh pack with 50v and 300a. The system works well for a few hours and then one of the inverters (not always the same one) trips. First shows error 12, current leakage exceeds maximum and then immediately error 36, dont connect grid to output terminal. Incoming grid from utility has only L and N which go to main utility fuse box which then has a earthing to ground. L and N then go to utility meter. Once they exit the meter I have run them approximately 100m to an ACDB next to the inverters where they are each split into 3 and are connected to the L and N terminals of the ac input terminal of each inverter. The earth terminal of each ac input terminal is taken to a nearby earth pit. The ac output L and N from each inverter are taken to an accb and combined to single L and N which travel back to the meter box where they are connected to the house load. The house load is earthed at the same place as the incoming grid. The earth at each ac output terminal of the inverters is taken to the same earth pit as the ac input earths. I have checked for current leakage in the house itself and found some issues which have been rectified. I have tested the modules and they are not leaking current. I have checked the insulation of the ac grid to inverters cables and ac output to load cables and all are fine. The body of the inverters have been earthed as well. Voltronics are not helping at all with my problem and are not willing to come on a call and insist on keeping all communication to emails which they rarely answer and if they do it is several days later and of little help. Has anyone else faced the current leakage issues? I am hoping that once I sort out this issue then fault 36 will disappear as it only appears when fault 12 appears. Thank you in advance for any advice you can pass on.
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