greghayter

Thanks @Scorp007 Our problem is the power is taken from a neighbouring property, and he's not really interested in doing anything his side, so lowering the supply side is tricky. The voltage is definitely higher during the day; when the suburb starts using power around 5pm, the voltage drops below 250V and the battery charger kicks in after a while, but the moment the load drops, the problem reoccurs. I've spoke to Sean at PHD who has suggested a product, and confirmed that the CT position should be unchanged.

Hi We recently installed a Sunsynk Powerlynk in our suburb's guard house at the boom control. We get power from a neighbouring house. The inverter installation appears to be fine, but it seems that the incoming voltage spikes to above 260V at times (I've witnessed 258V shown on the display) and the charger is limited to max 251 V input, or the protection relays kick in. We have been told that we need to install an AVR to reduce the voltage - can anyone suggest a good product that is reasonably priced and is fairly small (we have limited space)? In addition, where would we now install the CT coil to control zero export - between the mains and the AVR or between the AVR and inverter. Thanks guys Regards Greg

Hi Everyone Thanks for all the responses. So some follow up questions and some comments. As per the image posted by Piper, the interconnect cables are 180mm in length - I have a 4 battery cabinet and plan to get another identical cabinet to put on top or alongside to house the additional batteries, with the aim of getting to 8 batteries eventually. Any suggestions on where to get a cable long enough to parallel all the batteries - the jump between cabinets will be longer than the standard cable? The full story behind my change in inverter is that we installed it 2 years ago as a load shedding solution in our house under a stairwell, and then decided to build a cottage for my parents who have just moved in. So they are on grid power at the moment - I have installed a main DB in the new garage which then feeds the house and cottage so I plan to install the bank of inverters and batteries in the garage to feed both house and cottage. So after that long winded explanation, the issue is I want to parallel the new inverters and my understanding is that running them off a common bus on the DC side is the best solution so the charging duty is split between between inverters, and on the AC side the idea is to also feed a common AC DB which will feed the main DB. I just think that it is a much more flexible approach. I want to install 2 inverters initially, but with 2 households there is the possibility of needing a third. Are there any thoughts on the pros/cons of running 2x 8 kVAs vs 3x 5 kVAs? The one limit is that Sunsynk only allow 3 single phase in parallel, so using the 8 kVA allows for expansion to 24 kVA at a later point, whereas 3x 5s is already maxed out. However 3x 5s are a lot more cost effective than 2x 8s. As a note, my geysers and oven are still on Eskom, but the plan going forward is to either: a) connect them to the inverter system, probably necessitating at least 15 kVA capacity b) go to either vacuum tube or c) go the DC element route with its own panels Any comments on these options? Thanks again for all the feedback

Hi guys I have an existing 5 kVA inverter with 3x US3000C Pylontechs. It's an Axpert type inverter and although it has performed without problems for 2 years, I would like to replace it with 2 Sunsynk 5kVAs and add 3 more batteries. My question is, the manuals say that only 3 batteries can be connected using the standard cable (25mm^2), so how do you connect 6 batteries? My 3 are currently connected as per standard in parallel with the positive coming off the master and the negative off the 3rd battery, with the standard interlink cables between the 3. Thanks Greg