hjlinde

Hi there, Trying to understand whether this is normal or not... I have a 5kW Synapse KRM+ inverter - it's wired into DB and all. Everything is working, inverter runs in ECO/Bypass mode - not online mode. Something i've noticed is that, lets say i'm currently drawing 450W continuous in the house - load-shedding kicks in, suddenly the inverter shows the load is 1.2kW in the house, the fans spin up and less than 10s later it goes back to the 450W it was providing previously. Is this normal? If not or if so, what is the reason for it?

Just an update on this. Turns out the old M.E.S Earth Leakage breaker was to blame. Based on the wiring and everything it was very bizarre as to why EL would trip so decided to just replace the breaker. Used a Schneider Easy9 series one and problem totally solved.

Hi there Hoping someone can perhaps shed *some* light on what may be going on here. Background: While ago I purchased a Synapse 5.0+KRM inverter + 1 x Pylontech 3000C battery. (note: I'm well aware the battery can only supply ~1750W continuous etc.) Initially I hooked up the inverter and battery in my home office to test everything and make sure all is well and to temporarily run my office computers etc until we could properly install everything. In terms of how it was connected: From the wall plug with surge protection plug top, I supplied electricity to the inverter. Then what used to be plugged into the wall-plug previously (APC BackUPS Pro 900, computers, router etc), was now being plugged into an extension cord + multiplug that was connected to the inverter's output. All was well and at some point I turned on the aircon in my office (which is NOT on the plug circuit of my office where inverter is connected to). After not too long a time, EL tripped. Thought it was odd - and reset EL and turned it on and sometime later it tripped again. I then reset it once more and switched aircon to fan-only mode, which initially it seems to do the trick but then EL tripped once more and so forth. Need to point out this only ever happened when there was grid power. This was not the result of a change in grid power either (e.g grid being restored post loadshedding and inverter switching). The only permanent fix was to remove the earth connection on the inverter supply. Once this was done - never had the issue again. My understanding in the scenario and way it was connected that if the inverter for example briefly switched to battery it would do a earth+neutral bond which could result in EL seeing something weird and then tripping. The trouble is - the inverter has been installed since and *exactly* the same thing occurs now. It also doesn't trip immediately - it's entirely random far as I can tell. Nothing specific triggers it. Based on my understanding around how it's wired now - I think even if you were to make a permanent E+N Bond on the inverter hypothetically, that it shouldn't trip the EL that covers the 'essential load' (all the breakers on the far right in pdf doc). Is there something wrong with this inverter?! Should I return it? How now brown cow? Thoughts? hjlinde-db.pdf

Not that I doubt the SOC. Just figured it would be nicer if the inverter would rather adhere to the SOC as reported by the battery like it does when you pick WECO for Program 05. When you do that the inverter uses SOC % rather than rely on voltage readings. My limited understanding is you'd much rather want the inverter to e.g shut off if battery SOC is at for example 10% as per the battery's own BMS - as opposed to draining the battery till the inverter *thinks* its time to shut off because voltage dropped too low. ***Should add I thought the above was due to WECO + Axpert using can-bus

Hi there I recently bought a Axpert King 5kW (Synapse 5.0KRM+) and Pylontech US3000C. Set everything up as per the inverter manual for Pylontech batteries and using the supplied BMS cable - all is working fine, but of course it is via RS485. Given that the inverter have CAN-bus, I was wondering if there is a way to have the comms run over that instead. I guess what I'm really after is for the inverter to instead use the battery's reported SOC % for things like cut-off etc instead of the inverter doing this based on the battery voltage that it reads. This seems to be possible when using WECO batteries according to the manual - just curious if this is possible with a Pylontech? Tried to find answers elsewhere but haven't had much luck - so figured I'd post here.