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I’m talking under correction but it’s only Victron Energy who will sample data every 1 minute.

Any reason why a shorter time?

@Koppies Correction to the above battery fuse sizing Scenario 2 If the inverter is overloaded for 10s@110%~150% load then the battery current at 10% 5500W = 114.6A Scenario 1 for an overload of 5s@≥150% load. (See above) Thus the two scenarios of overload will be protected by a 100A fuse.

@KoppiesThe solar panels are all in series, so if you look at the nameplate data on the panels, select the max fuse rating specified on the nameplate. Typical rating could be 15A. E.g. If the panels were 2P4S then 30A would be applicable

@KoppiesThe Growatt es 5kW is allowed to overload (5s@≥150% load) 5kW x1.5 = 7.5kW for 5 seconds. Which is 156.25A @48V from a battery current perspective. 7.5kW / 48V = 156.25A I would install a 150A fuse.

Ok. Maybe they have changed their ways wrt sharing of firmware. 🤞The cell number that I posted supports growatt SA

The only way I received my Growatt firmware update was using WhatsApp and speaking to Nhlanhla +27 671722120. He will send the firmware within a day, on a zip file. Note: When corresponding with the Chinese via the “growatt shine app” the experience is equivalent to watching paint drying on a wall. The Chinese technicians, if you request via the “Growatt shine app”, will not help in terms of firmware. And take note only send one message at a time, if you need assistance from them. If you send several items they start reading from the bottom of your message and only respond to the last request. Then you have to repeat the rest of your technical issues over and over. I did my update in March 2021. 040 03 204 041 03 203. The performance was a huge improvement since the previous update was in 2018.

hubble_lithium_am-2_a4_pamphlet.pdf Hi PJZ790 see attached. Up to 100A charging current

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 35mm2 cables - Volt drop @45A = 351 mV - For 25mm2 cables - Volt drop @45A = 459 mV - For a 35mm2 cable the fault rating for 1 sec = 4025A - For a 25mm2 cable the fault rating for 1 sec = 2875A 3. Recommendation: 25mm2 cables will be suitable - Ensure Correct SCPD i.e. Fuse are selected - Volt drop is negligent <1% - Refer to battery manufacturers spec first before sizing cables - The 25mm2 cable is rated for 104A continuous current Note: - Only fuses to be installed (due to its fault current limiting properties) - Correct Fuse selection will ensure that the prospective fault currents will be below the cable fault rating - Current limiting MCB are very expensive compared to fuses - The battery spec have been assumed due to lack of the battery specification. - DC Cables length was assumed to be 3 m Pos. + 3m Neg. Normally installation length between 1-2 meter

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 budget allows. 2. Install a Hubble Lithium AM-2 C rating 1C 51V 5.5kW battery x1 see attached spec 3. Depending on the roof area install 8 modules now in series 8S and in future another 8S modules in parallel to the existing modules Thus 8S2P

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 budget allows. Install a Hubble Lithium AM-2 C rating 1C 51V 5.5kW battery x1 see attached spec hubble_lithium_am-2_a4_pamphlet.pdf hubble_inverter_compatibility_list_v1.1.pdf

Change <3% to <10%

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 inverter when the load is increased, due to power losses within the cables For additional info Refer to inverter manual page 9

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

I would only install within the non essential DB for this application.