Different Panel Configurations on an MPPT Controller

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  • littleharbor2littleharbor2 Solar Expert Posts: 1,599 ✭✭✭✭
    edited April 2018 #32
    Is the tabbing in the module itself the weak link when it comes to overcurrent issues? It looks to me to be a lot lighter than the cables themselves.

    2.1 Kw Suntech 175 mono, Classic 200, Trace SW 4024 ( 15 years old  but brand new out of sealed factory box Jan. 2015), Bogart Tri-metric, 540 ah @24 volt AGM battery bank. Plenty of Baja Sea of Cortez sunshine.

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  • BB.BB. Super Moderators, Administrators Posts: 31,680 admin
    #33
    I don't know--But it seems possible. Also the bypass diodes are another weak spot (undersized, poor to non-existent heat-sinking, in my opinion).

    -Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
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  • littleharbor2littleharbor2 Solar Expert Posts: 1,599 ✭✭✭✭
    #34
    Here's a couple pics of burnt tabbing. Presumably not from an overcurrent issue but from Kyocera's lead free solder problem.


    2.1 Kw Suntech 175 mono, Classic 200, Trace SW 4024 ( 15 years old  but brand new out of sealed factory box Jan. 2015), Bogart Tri-metric, 540 ah @24 volt AGM battery bank. Plenty of Baja Sea of Cortez sunshine.

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