November 25, 20232 yr Hello All The Deye 20kVA has 2 mppts and 2 strings per mppt. The specification indicates the Max Input Short Circuit Current to be 39A+39A. Is this 39A + 39A per string ( of each mppt ) or 39A + 39A per mppt ? If the answer is the latter, i.e. 39A + 39A per mppt, then do the two strings into each mppt create a parallel or series connection between them ? In Series, that would mean that: string1 <= 39A string2 <= 39A string3 <= 39A string3 <= 39A Or does it create a Parallel connection i.e. string1 + string2 <= 39A string3 + string 4 <= 39A Thank you in advance. Edited November 25, 20232 yr by James1
November 25, 20232 yr 1 hour ago, James1 said: Hello All The Deye 20kVA has 2 mppts and 2 strings per mppt. The specification indicates the Max Input Short Circuit Current to be 39A+39A. Is this 39A + 39A per string ( of each mppt ) or 39A + 39A per mppt ? If the answer is the latter, i.e. 39A + 39A per mppt, then do the two strings into each mppt create a parallel or series connection between them ? In Series, that would mean that: string1 <= 39A string2 <= 39A string3 <= 39A string3 <= 39A Or does it create a Parallel connection i.e. string1 + string2 <= 39A string3 + string 4 <= 39A Thank you in advance. Use 26A/mppt not the 39A as it is the short curcuit current of your array. 2 strings per Mppt needs to be 13A+ 13A the 2 strings are parallel into the mppt. Edited November 25, 20232 yr by TaliaB
November 27, 20232 yr 16 minutes ago, James1 said: One more question: Is the Max DC Input Voltage per mppt? Yes James the max input voltage is per mppt. The specification sheet stipulates 1000v but do not go that high. Do not exceed 850vdc the mppt range is between 150vdc-850vdc. Your sweet spot for both mppt's is 500v at 26 amps/ mppt that would be the optimal wattage, 500v x 52 amps = 26kw for both mppt's as per spesification sheet. Edited November 27, 20232 yr by TaliaB
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.