battery_compatibility:byd_b-box
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| battery_compatibility:byd_b-box [2019-02-12 21:33] – guystewart | battery_compatibility:byd_b-box [2019-02-18 14:08] – guy_stewart | ||
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| This parameters page is also a good place to check that all batteries are connected and working properly. In normal working conditions, for the 2.5 model, the current limit is 35A per cell. For example, 140A charge current limit ( 140 / 35 = 4 ) means there are 4 BYD battery cells connected. | This parameters page is also a good place to check that all batteries are connected and working properly. In normal working conditions, for the 2.5 model, the current limit is 35A per cell. For example, 140A charge current limit ( 140 / 35 = 4 ) means there are 4 BYD battery cells connected. | ||
| + | Note this figure has been increased in recent firmware versions - so it may appear slightly higher (eg 40A per cell). | ||
| === Color Control GX Configuration === | === Color Control GX Configuration === | ||
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| {{: | {{: | ||
| - | Also check that your are seeing the expected | + | Also check that your are seeing the expected |
| Locally on-site, you can check the Run LED on the BYD BMU, it needs to be lit up continuously: | Locally on-site, you can check the Run LED on the BYD BMU, it needs to be lit up continuously: | ||
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| There has been a firmware revision for the BYD battery modules and BMU that improves cold weather performance slightly. This manual will be updated with the new (slightly improved) specifications when stock supplied with the new firmware has had sufficient time to enter the market. Contact your BYD distributor for further information about this. | There has been a firmware revision for the BYD battery modules and BMU that improves cold weather performance slightly. This manual will be updated with the new (slightly improved) specifications when stock supplied with the new firmware has had sufficient time to enter the market. Contact your BYD distributor for further information about this. | ||
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| + | === 10.4 Self-Startup from Low voltage shutdown modes === | ||
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| + | In a correctly configured system, the inverter will shut itself down before the batteries enter a self protective shut down state. | ||
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| + | If your system is supplied only with AC-bus solar charging, this may prevent the solar inverter from starting up to recharge the batteries. Therefore it is strongly recommended that there is also either a generator or DC MPPT charge controller to provide DC bus power to bring the inverter back online to allow normal recharging to resume. | ||
| + | |||
| + | Even a single 100/20 48V MPPT charger unit with 2 x 60 cell solar panels would be sufficient to add this self correcting mechanism able to maintain the DC bus voltage and improve longterm system reliability considerably from accidental deep discharge and subsequent shut down. | ||
| + | |||
| ===== 11. Further Information ===== | ===== 11. Further Information ===== | ||
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| ===== DISQUS ===== | ===== DISQUS ===== | ||
| ~~DISQUS~~ | ~~DISQUS~~ | ||
| - | |||
battery_compatibility/byd_b-box.txt · Last modified: 2024-01-22 07:32 by guy_stewart