JNTM

Hennie I believe there may have been a misunderstanding between your installer and yourself or possibly your installer doesn't quite grasp how the system hierarchy works and how the system is using your energy produced by your panels. Please contact the insurance installer and get my number from them , I would be more than willing to assist to get your system streamlined correctly so that we optimise and utilise the system that has been put in place or at least point you in the right direction to get the system working as you envisaged originally. Regards JNTM

Hennie the et112 is what they call a zero meter ie it tries to zero any energy moving backwards and forwards through it , so yes your assumption is partly correct. However if it is installed on your grid incommer before your non critical and critical loads it will only stop backfeed to the grid. Therefore any load this includes critical and non critical will be fed at anytime from battery or solar until you reach the SoC as set on ess , at this stage the system will revert to grid. If you have your et112 installed at your grid entry point the usual modus operandi , if your solar is not sufficient for non critical and critical, is to set the SoC on ess to about 95% this then ensures that you do not keep your battery in a semi depleted state and that your using your solar to its full potential, however you then do not get without manual switching the usage of your battery at night. There are also other means of configuring your system to optimise better and I am willing to assist, I am gathering that maybe you haven't had a proper sitdown with your installer to really discuss what you really want to achieve with your system. Furthermore my personal preference is to have a bmv installed as it is to me a far more accurate way of measuring SoC especially when one is dealing with lithium batteries that have a voltage operating window of between 54v and 50v , especially if you are using unmanaged batteries. Remember the older agm batteries have an operating platform between 57.6 and 44v which is a larger increment and not prone to slight SOC differences. So probably due to not understanding how your et112 operates you've been running your battery at 40% SOC consistently and many lithium battery suppliers would actually null and void their warranty , so I would probably be pretty thankful that the battery company your dealing with actually replaced this battery under warranty I know many that wouldn't have. I have had exceptional service from both your inverter manufacturer and battery company and have found that with proper communication with both they usually will bend over backwards to be of service to any of their customers. Both have accredited installers who are very able to answer any pertinent questions that you may have and help you on your way to becoming independent from eskom.

Hennie I was requested by the battery company to help with the installation done by your insurance company. I have the screen grabs of the system after it was adjusted as it was not setup correctly by your installer. The battery delivered 6kwh in a 24 hour cycle and had 40% SOC this indicating that there was in excess of 10kwh usable from the battery which is well within the specification of the battery. Furthermore i clearly pointed out to installer that the use of a energy meter for back feed Into non critical loads with insufficient solar would cause the battery to be drained to the set SOC of the ess system. This in effect caused your battery to be kept at 40% SOC at all times which is the reason why the battery appears not to have capacity. Keeping a battery at this level is EXTREMELY harmful to the battery and can have an effect on your warranty. I am môre than willing to correct your system so that you get the full capacity of the battery out, however will only assist when you remove the 10 users in your vrm, all with admin rights. I am more than willing to share the screen grabs of your system to demonstrate what is actually happening in your system. The battery and the inverter system which are installed are operating 100% in line with what they are set do however, the way the system has been setup is probably not as what you where expecting or it was not explained correctly to you.