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Alex Feldmann

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  1. hubble_lithium_am-2_a4_pamphlet.pdf Hi PJZ790 see attached. Up to 100A charging current
  2. 1. Obtain battery specification first. Typical spec for a 12V 200Ah lead acid gel - x4 12V 200Ah Lead Acid Gel Battery - Connection is in series thus Battery Bank = 48V 200Ah - Max Battery Charge Current = 46A - Max Battery Constant Discharge Current = 45A - Battery 5 Sec Discharge Current = 1850A - Battery Short circuit current = 3422.5A 2. Obtain DC cable specifications (for 25 and 35 mm2) - Max continuous current rating of a 25mm2 cable = 104A - For a 35
  3. My Solar System_210417_092712.pdf Hi @Koppies I have a similar system as to what you are proposing / installing. See attached doc. growatt 5kW SPF 5000 HVM WPV P 150AH 12V x4 Lead Acid Gel batteries X12 330W poly crystalline modules 6S 2P arrangement 3960Wp Actual Off the Grid for 2021 thus far Jan - Feb 2021 7hoo - 19h00 March - April 15 2021 8h25 - 18h00 Note - Solar charging batteries 24/7 only What I would recommend 1. Increase your modules to achieve an installed capacity of 5500Wp, if the b
  4. My Solar System_210417_092712.pdf Hi @Koppies I have a similar system as to what you are proposing / installing. See attached doc. growatt 5kW SPF 5000 HVM WPV P 150AH 12V x4 Lead Acid Gel batteries X12 330W poly crystalline modules 6S 2P arrangement 3960Wp Actual Off the Grid for 2021 thus far Jan - Feb 2021 7hoo - 19h00 March - April 15 2021 8h25 - 18h00 Note - Solar charging batteries 24/7 only What I would recommend Increase your modules to achieve an installed capacity of 5500Wp, if the budg
  5. Assume Solar Module 1S Voc = 48.2V Vmp = 39.6V Imp 9.35A Solar Array 6P2S x6 Strings in parallel Vmp = 79.2 Imp = 56.1A Solar Wire Sizing Recommended Assume 40 meter between combiner box and Inverter Wire size of 16mm2 is Required for <3% Volt drop @ Imp 56.1 Wire size of 10mm2 is Required for <3% Volt drop @ Imp 45A Recommendation would be to check if a 16mm2 solar cables (Or x3 6mm2 per phase) are installed. If the solar cable is not 16mm2 (Or x3 6mm2 per phase) then the solar array cannot supply the max. required power to the in
  6. Lastly I prefer wiring diagram v1. The inverter & main earth leakage covers the complete circuit and does not exclude components and wiring e.g. change over switch, during battery or utility mode
  7. I would only install within the non essential DB for this application.
  8. Does the Soltra Inverter have the capability (programmable contact), when working in battery mode i.e. during off grid (e.g. load shedding), to trigger an output for an external relay to bond the neutral to earth? If not, then the RCD (essential loads - earth fault) during off grid mode will be non- functional, which becomes an safety issue. I browsed the manual quickly but could not find this function. note: 1. include the external bonding relay to your circuit (Ess. DB) which interfaces to your inverter, if the function exists. 2. I am assuming that you have incl
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