earthrealm:


would you have the 330w/300w mono for sale?
thinking of snagging a few more panels, to prepare for apocalypse

NiyiOmoIyunade:
We full ground o!

PylonTech and BYD only for now though.

As other brands pass our field tests, we will add them on.

The idea is for the customer to enjoy his investment with peace of mind.

hancock:
An experienced Structural Engineer with minimum of 2 years experience in Analysis & Design
Candidate MUST be versatile in the use of autocad, CadRC, ProtaStructure, Tekla Structural designer, StaadPro etc

-Lagos Based
- Not more than 30 years

Kindly send your cv to recruitment.citiwestengineering@gmail.com

Cheers

ojeysky:


It's actually also possible to make the rj45, just 4 of the 8 strings needs to be crimped. Meanwhile apart from monitoring were else does the ICC do for you in relation to your lithium performance?

As to the CC algorithm, some folks have made a patched version that makes things easier with LFP you may find the following helpful: http://forums.aeva.asn.au/viewtopic.php?f=64&t=4332

NiyiOmoIyunade:
Truly it was a struggle to the last day.

My friends on here pitched me huge 2v banks up to 2000Ah for significantly less than the cost of Lithium.

One deciding factor was that my company has a few Lithium installs under our belt, it is the cornerstone of our business success to use the products we sell so we have a wealth of real field experience and can provide valuable support to our customers.

In the end it was a happy accident as I ended up with a huge PV array - 19kw as part of the deal and not too crazy a cost.

A couple of pain points though;

1) Had to give up my beloved MorningStar CCs as they pulled support for PylonTech.


2) A lot of premium copper connectors, ferrules e.t.c i purchased for lead acid have now gone to waste.

3) PylonTech is a smart/managed battery - I understand that you cannot simply connect an inverter to the battery terminals and use - even if you make all settings for charge and discharge within safe tolerance. The PylonTech expects a keepalive signal from your inverter or control box else it switches off after a set interval. I have not seen this yet in practice but I went in with all the right tools to do it properly anyways. The 2 clients I installed for used an Axpert and Steca respectively so things were a lot simpler there.

4) Despite paying top dollar for 2 Victron Quattros (15kva & 8kva) and undrerstanding that Victron supports PylonTech, I found to my chagrin I had to purchase a Victron GX control device to sit between Inverter and Battery and CCs and Battery for everything to work. I had to return a VE.Can Victron CC purchased at a good price because only VE.Direct and VE.Bus Victron products are compatible.

With my huge array, quite a challenge integrating 4 CCs into one GX device - had to purchase an assortment of cables and USB hub to make things work.

5) All in all quite a bit of complexity to work through - what is needed is a lot more than just connect inverter, CCs and battery to bus bar. In my setup, the Inverter, CCs are slaves to the PylonTech BMS with the Venus GX device acting as governor for the relationship and communication.

If any device loses connection to the GX, it goes offline and may be cumbersome to restart. If the BMS faults out and shuts down the battery, nothing else will work till the GX device can start - remember GX requires battery and battery has gone off either you have another smaller independent dumb lead acid or Lithium battery to power the GX off of or you use mains supply to kickstart the inverter and battery.

In short a lot can go wrong that is just software and interface. You dont face all these challenges with Lead Acid.

In the end I was able to setup an entire working system with remote monitoring working alone over the course of two evenings - with this I became certain I was called to this profession indeed.

My back, upper arms and pocket still hurt though

ojeysky:
Folks if you can, go lithium FP mine has been throwing great performance thus far!

Callmenuel1:
200amphs, 12volts MONBAT battery is available, #85, 000. Contact us on 08168986461.

earthrealm:


you miss the point!. you still Tr get it
cables are not sold by diameter size.....but square mm/mm2.................... aka area
simply go and look at the markings on the cable you have......
i no get strength for unnecessary/blind argument bros

@topmost, 90mm2 cable na mission impossible, it would be as thick as an infants forearm and would cost upto 10k per meter

Saipro:

10mm cable is actually 10mm².
95mm² cable is real and quite thick (I use it on the +ve input to my Victron inverter). Consider that 300mm² cables exist

earthrealm:



Its what it is naaah
95mm cable is what is required, u have 6mm.
That shud show you the gross error in your cable sizing.....as i said earlier.
Mppt is best for such length..4s or 3s..depending on max Voc of your CC

You are supzd to be getting 30amps to 50amps as you can see....but you are only getting 11a..or max 18a i bet

Barezzi:
@ Hancock, I'm also interested in the US3000 Pylontech batteries.
How many internal organs will get me 6 modules?

NiyiOmoIyunade:
This restart/reset feature via software did not work out as planned - I may have bricked one of my units today when I tried to restart it via a software command - solar was of course disconnected.

I will know for sure when I get back home today.

In the meantime please do not use this feature or use at your own peril

ojeysky:


You can check their documentation at their website below. A few differences:
GK: Batteryless, and high Voc, 3KVA has 80amps charge controller, support 4000W panel
MK: Parallel support, zero switching delay, low VOC, 3kva has 60amps charge controller, support 1500w panel

https://www.mppsolar.com/v3/pip-mk-series/

Regards

ojeysky:


If you are using the PIP series inverters; Voltronic Axpert, Mppsolar PIP, Voltacon, Effekta, and if you can get your hands dirty on techie stuff then you can procure a raspberry Pi and try the solpiplog:

https://github.com/njfaria/SolPipLog

earthrealm:


does it have adjustable charging current knob as well?
anybody knows the idle consumption of this felicity?..abi its same range as its brother -- mustpower?

Mrpm:
This thread has been quite inspiring. I’ve been on solar energy in the past 4 weeks until recently when grid was installed. My experience so far has been great. Except I’m having problems installing Venus OS on my Raspberry Pi 3 B+.

Images are below, and kindly point out if I’ve done something wrong.

NiyiOmoIyunade:
Boost!

8 units left...

NiyiOmoIyunade:
Danke schon!

Imagine a 5kWH battery bank fully charged and you have mains available for 5 hours then mains withdrawn after 5 hours.

With the Felicity attached to the battery bank and charging disabled, if you run a 500w load for those 5 hours and then mains fails, there will be no impact on your battery as they will still be fully charged since the Felicity will power loads directly from mains and not drain the battery at all.

With the VilPowerStar attached to the battery bank in Solar Priority mode, and you run thesame load for 5 hours your battery would be discharged ~50% - if mains fails after 5 hours you would be left with a deeply discharged bank and in need of a power source to charge so the batteries don't suffer damage if depleted too low

The two scenarios above show a significant difference between disabling charging and using the line/mains directly with the Felicity vs. running in Solar Priority mode with the VilPower.

There is a battery type selection setting #9 on the VilPower which may behave similar to the Felicity but I have not yet tried or tested it - luckily I have both the Felicity and VilPower in my house but the Felicity clearly wins this round with the elegance of its features.

makavele:


We arent talking about discharge so we dont care, we are talking about disabling charging
thats why i said one is more direct and one is indirect
but the same aim is achieved,
i rather choose the must version because its the best definition of being offgrid