AEVA Forums

So what does the battery manufacturer say the maximum short circuit current of your batteries is? And what is the maximum DC breaking current of your circuit breaker? 3644A Breaker: 6000A So if I believe the mcb ratings, it's safe. But then I watched this https://youtu.be/Cup5fMGaE2g Which was scar...

And you should be well aware that the legal basis is that the New Zealand Electricity Act requires compliance with AS/NZS 3000:2007 Wiring Rules, as does every state electricity act in Australia. See sections 2.5.3 and 2.5.4 of AS/NZS 3000:2007. If your copy is older, I expect you will still find s...

Lots of assumptions flying around. 1. A shunt cannot safety exceed it's rated current. Looking at the wiki page for "shunt", it states that shunts are derated by 66%. Therefore a 50A rated shunt has been tested to carry 150A (we can theorize looking at the photo of this one but let's actually test i...

Unsuitable? You have made several errors in your snarky response. 1. Using a 50A shunt does not limit the inverter to 2.5kw. It limits output to 2.5kw AT NIGHT ONLY. Output can still be 5kw during the day. You forget that pv or battery or both can be inverted. 2. You are dismissing the possibility o...

50A either in or out of the batteries for me would be extremely rare. The most I've seen is 30 since the hw mod. I've ordered one and will have a play with bigger shunts I asked about the display vs the working range, she repeated the working range as a response. But some of the feedbacks say it wor...

I came across this today, 95% cheaper than those other battery computers
J34 Free Shipping Capacity Tester Indicator Coulometer 35-80V 50A Lithium/Lead-Acid Battery Meter

http://s.aliexpress.com/7zmaEzQB

Here is the circuit diagram for my hot water regulator http://forums.aeva.asn.au/uploads/4186/HOT_WATER_REGULATOR.JPG I wasnt sure what would happen if I put 230v on the output side of an SCR that didnt have 230 on input so I decided to use one instead of 5, remove the trim pot and configure resisto...

If relays disconnect the pvs, why have blocking diodes? 0.7v x 60A = 42w going to waste?

Obviously there is a 12v DC power supply, do you know where I could tap into it to run my voltage detectors? (100ma) really don't want to have to run a separate 12v plug pack Also I would like to have an overide switch that would quickly switch to utility mode, without needing to go through the sett...

Thanks.

Well the Internet company called this morning saying our fibre box had been showing an error last few days. Mystery solved. Pity they didn't call yesterday

OK so I've waited 48hrs for them to respond, which they haven't http://forums.aeva.asn.au/smileys/smiley7.gif I opened it up, did the fan swap. Could not see anything abnormal. Nothing smelly. I noticed 6 relays inside. 3 on the main board, 2 on the mppt board, 1 on the comms board. All 12v coils. A...

No leakage. I did notice after restart, the pv icon disappear with a relay click then come back a few seconds later. But I have seen that on the remote about 20x before and thought it was normal

No smell that I noticed. I put a smoke detector above the inverter in case anything else happens

Well I just had a basement full of smoke. I was laying carpet upstairs and noticed smoke wafting up through a gap. I ran down and saw a haze, not thick. I could not see the source and flipped off all breakers. No cables, batteries or breakers were hot. The inverter wasn't hot. There was no fault led...

If anyone needs DC breakers these are the cheapest http://pages.ebay.com/link/?nav=item.vi ... 20&alt=web I negotiated and got 10pc various ratings for 30usd incl shipping

I note that the oft-quoted power limit of 3000 W is really a 60 battery amp limit, using a round 50.0 V as a round voltage when charging. Towards the end of the bulk stage, the battery might actually be at 54.0 V. Then 54.0 x 60 = 3240 W = 3.24 kW. So, if there's 3kw load and only 2kw charging will...

OK so I was unable to find a phase control module on ebay. nevermind, I shall make one. I bought 4 of these SCR dimmers: http://pages.ebay.com/link/?nav=item.view&id=221975896629&alt=web And 5 of the voltage sensors in cases as above. Each voltage sensor relay will energize it's own "dimmer", which ...

Someone said in nz you get more output than rated. Today my 3kw was showing 3.24kw at one point. So how much can the PIP really do? anyone tested this?

HI Northland this maybe an option. https://www.youtube.com/watch?v=LlKXwxEiAwQ available here http://www.ebay.com/itm/Multi-function-Voltage-control-relay-timer-delay-switch-voltage-protection-12V-/271832274268?hash=item3f4a77555c:g:AEMAAOSwEeFVAQxF wow! Too easy....and cheap. Thanks. I might use 2...

Yes probably creates more problems than it solves. OK well what about a zener with reverse bias?

By the way, in case it wasn't obvious, I'm a (former) sparky. Lived in aus for 16 yrs actually. I'm probably in the top 5 in NZ for LED knowledge if you guys have a question

My preference would be to have the up button cycle through the possible variables on the left side of the screen, and the down button cycle the right side, independently That would be awesome They don't need to talk to each other. They will effectively communicate via the battery voltage. I suspect...

I'd consider changing that to 2S The problem with 2S is it will only be in the mppt range near full output (I'm assuming voltage drops) and won't be getting the mppt when it actually needs it. Brilliant! I've been thinking about how to make my single 2400 W element draw less power. Maybe I can get ...

Oh I forgot. I just built a new house behind the old house. Trouble is, the new house is close to trees on east, north and west. In addition, it's a 15 deg pitch roof facing east and west. So I had no north facing roof and a lot of shading issues. The angle issues could be solved with adjustable mou...

Q11. I would like to control my loads, depending on other loads and input power. As I said, my hot water draws about 1200w. Let's say it's semi overcast and I'm getting 1500w input. Now let's say I want to turn on the kettle. I don't want them both on, it would draw 40A from the battery. So I want t...