strings

strings

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  1. R

    Fox H1 max open circuit voltage,?

    I have 18 panels in 2 strings (37.8v open circuit voltage each) to be connected to a Fox H1 inverter. The manual says the below. Is the 600v open circuit voltage per string or for both strings combined? H1 series inverters can be connected with 2-strings of PV modules. Please select suitable PV...
  2. M

    Link 2 LED Xmas strings to one larger Transformer or LED Driver ??

    I have 4 sets mains / 36v LED strings and I would like to merge 2 sets to one power supply - plaese advise is this possible and what size transformer / LED driver would be needed? Each string has 1152 bulbs at 0.043 per bulb Label on wire of Lights states 36v~2.33A, 84VA then...
  3. T

    Optimum setup of 2 strings on Solis RHI hybrid inverter

    Hi, We have a setup of 2 strings in series of Viridian panels, at present these go to the inverter which has dual mppt inputs so the strings are independent. The strings are slightly different, 7 x 250w clearline mono and 7 x 270w clearline poly. I have been looking at the settings in the Solis...
  4. Y

    Problems with Series/ Parallel strings not adding ampage.

    Hi Guys, im hoping someone can help me. I have recently installed 3.2kw system for an offgrid job. The problem im getting is that im only ever seeing around 300 watts solar generation for the whole system. We have used 10 x Canadian Solar 320 watt panels Voc for the panel is 44.9 and the ISC IS...
  5. Mark.W

    PV testing

    Hi peeps Just a quick one but how many of you do DC dead testing on PV systems?! Regards Mark
  6. edexlab

    eversolar 17000tl

    Can anyone help me with finding a pdf of the installation manual for an eversolar 17000tl I've been on lots of sites and can't seem to find a proper manual just data sheets, I've been asked to take a look at a 50 kw system which has issues, and had a look for a manual last night gave up in the...
  7. U

    Solar

    Hi what sort of dc voltage could I expect on 16 panels x250watt'.
  8. G

    Hyundai PV Panel Array - RISO test help

    I have two 8 panel strings laid flat on a flat roof connected to a Power One inverter. One of the strings is showing a RISO of 0.5 mohm or less. The cables and connectors are all dry and intact, so I think is is a faulty panel. The voltage test doesn't identify the actual panel. If I take off...
  9. P

    Low RISO fault

    Have a problem with a customers array as both the Power One 27.6tl and the 20.0tl are registering low Riso faults. The array has been earthed on the roof and is made up of Renesola 255s. When tested across the +ve and -ve of each string to earth the same voltages were obtained for all strings on...
  10. P

    0.5A difference between 2 identical inputs. Solarriver 4000TL-D

    I just had a 4kW system installed. It uses the Samil Solarriver 4000TL-D inverter which has 2 DC inputs. There are 2 strings of 8 panels, each going to one input of the inverter. All the panels have the same aspect and zero shading in the afternoon so I'd expect them to supply the same power at...
  11. S

    Eversolar 4000TL inverter issue

    Hi, Problem arisen with a solar pv system installed in December 2011. Eversolar 4000TL connected to 16 250W Suntech panels (1x string) Worked fine until 3 weeks ago where a problem has developed in bright sunshine, inverter makes a loud clonk and cuts out. Reads error code: UAC failure...
  12. M

    European installation standards for US based installer

    I'm looking for some input on minimum installation standards for an installation that is a hybrid of US and EU equipment for an installation I am working on. The project is located in a Caribbean island that uses 230/400V 60Hz. My solar training is all US focused although I am originally a UK...
  13. J

    solar max mt 10

    Hi all, I've got a problem with a 20kw system in Hertfordshire. System is split into 4 strings over 2 10kw inverters. 1 inverter is showing DC insulation fault, I have had a look at the manual which says - the insulation resistance of the Pv generator against earth is too low. It then goes to...
  14. R

    generation meter installation

    hi, at the risk of sounding incredibly green i have my first pv install tomorrow and noticed when loading the van that the generation meter has one input a line nuetral earth connection but only one input. i have two strings to connect. will i be okay connecting both unequal strings to one input...
  15. J

    I am a new PV householder - advice please. Unbalanced strings and wrong inverter

    I was quoted for a Growatt-3600MTL with 16 Suntech STP 245S panels. We have a large roof, but it is hipped, so the installer proposed 12 panels on the house roof and 4 on a garage roof with same orientation and similar roof elevation. I did a bit of research on the inverter, even had a reply...
  16. D

    Long strings and the 1000V limit

    Hi, We're just installing a 10kWp system made up of 43 panels & an SMA ST-10000 TL inverter. SunnyDesign recommends two strings made up of 24 & 19 panels. That fits very nicely with how we want to physically lay out those panels. The panel's Voc is 36.7, Vmax is 28.7 and the system's Vmax...
  17. S

    2 strings or one

    Hi all hope you can advise me I have an on going problem with my inverter My installer wants to change the inverter to a German that i don't know the name of yet He is telling me that his inverter will only work on a high voltage and i have to put my 2 strings of 8 235w panels into one string Is...
  18. I

    Battery bank question

    Hi there, my local solar installer tells me that I should not have more than 3 strings connected in parallel for my 24v battery bank.... is this correct? what could be the problem if I have series of 2 batteries x 6 strings in parallel? thanks.
  19. S

    PVI 3.6 - uneven strings?

    can some one confirm if i can install say 10 on one string and 6 on another like you can with the SB 4000TL? no time to prenotify so need an inverter below 3.68w. Thanks
  20. J

    Help please - 2 parallel South South East facing roofs

    Semi ignorant member of the public here looking for advice from an expert not trying to sell to me. I am in NE Scotland. Looking to purchase 16 X 250 W panels but too tight for space on largest SSE facing roof. I have 2 parallel SSE facing roofs about 8 feet apart. The smalIer roof will have...

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