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Author Topic: More PV @ Courtiestown  (Read 35142 times)
Stig
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« Reply #90 on: April 27, 2018, 10:13:35 AM »

Quote
of course it could have been negative if I had the clamp the other way around.

How does that work with AC then?   Huh

By measuring the vector multiplication of the current and voltage. You need the magnitude and phase delta for the voltage and current.

Ah, didn't realise it had a voltage probe as well.  Guess I wasn't paying attention!
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nowty
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« Reply #91 on: April 27, 2018, 10:40:34 AM »

Ah, didn't realise it had a voltage probe as well.  Guess I wasn't paying attention!

I guess it probes the voltage from simply being plugged into a mains socket.
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11kW+ of PV installed and 56+ MWh generated.
Lithium battery storage of 50+ kWh.
Hot water storage of 15+ kWh.
Heat storage of 15+ kWh.
6kW Ground source heatpump.
EV BMW i3 (another 30+ kWh's of storage).
260,000+ litres of water harvested from underground river.
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sam_cat
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« Reply #92 on: April 27, 2018, 11:37:51 AM »

Ah, didn't realise it had a voltage probe as well.  Guess I wasn't paying attention!

I guess it probes the voltage from simply being plugged into a mains socket.

Thats my guess too, inverters (by being what they are) have a good reference point in that they are connected to the supply.
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Tinbum
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« Reply #93 on: April 27, 2018, 03:56:16 PM »

Ah, didn't realise it had a voltage probe as well.  Guess I wasn't paying attention!

I guess it probes the voltage from simply being plugged into a mains socket.

Thats my guess too, inverters (by being what they are) have a good reference point in that they are connected to the supply.

That could be interesting if you have 3 phase and it's plugged into a different phase to the one its actually measuring.
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85no 58mm solar thermal tubes, 28.5Kw PV, 3 x Sunny Backup 5048, 3x Sunny Island 5048, 2795 Ah (135kWh) (c20) Rolls batteries 48v, Atmos wood gasification boiler, Brosley wood burner, 2000lt buffer tank and 250lt DHW
nowty
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« Reply #94 on: April 27, 2018, 05:46:54 PM »

That could be interesting if you have 3 phase and it's plugged into a different phase to the one its actually measuring.

I started to think that too, but earlier in the thread the OP says its a single phase property.
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11kW+ of PV installed and 56+ MWh generated.
Lithium battery storage of 50+ kWh.
Hot water storage of 15+ kWh.
Heat storage of 15+ kWh.
6kW Ground source heatpump.
EV BMW i3 (another 30+ kWh's of storage).
260,000+ litres of water harvested from underground river.
Home grown Fruit and Veg.
linesrg
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« Reply #95 on: April 30, 2018, 02:19:54 PM »

Good Afternoon All,

OK so having carried out the simple test proposed by nowty it is clear that my SP2000 is not working properly. Now for Plan B - problem is I don't have a Plan B - so I'll now need to make one.

Regards

Richard
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
sam_cat
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« Reply #96 on: April 30, 2018, 02:50:56 PM »

Good Afternoon All,

OK so having carried out the simple test proposed by nowty it is clear that my SP2000 is not working properly. Now for Plan B - problem is I don't have a Plan B - so I'll now need to make one.

Regards

Richard


Ahem.....

Wink :p

Sorry to hear its broken, but at least you now know where the problem lies. Sometimes diagnosing the location of the fault can be a real PITA.
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linesrg
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« Reply #97 on: April 30, 2018, 03:14:59 PM »

sam_cat,

My apologies it was indeed yourself.............

I've just tried contacting Growatt on the numbers provided by Mike123(Huh??). A nice lady answered the phone (to both the 'Southern' mobile no and the base no.) to advise that they weren't dealing with Growatt anymore?

Is nothing ever easy?

Regards

Richard

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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
Mike123
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« Reply #98 on: April 30, 2018, 03:24:04 PM »

Oh! I'm shocked as the company details I gave to you called itself Growatt!

I have contact the distributor and asked what the tech support no is now, and will revert once I get an answer

The Growatt warranty is with the original purchaser, so they probably won't honour the 5 years warranty, but it is obviously worth asking, as they DID honour it with me

The SP2000's do come up on ebay quite often. I have 3 to sell, just need to get around to putting them on
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Mike123
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« Reply #99 on: April 30, 2018, 04:57:11 PM »

This is what I just got back as a reply

"Neil and Jon are the two technicians for Growatt, though they both are on the road and in lofts a lot so be patient getting in touch. A text is often best.

Neil 07585 559688
Jon 07766027588"

But that is the number I gave you for Neil, wasn't it?
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linesrg
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« Reply #100 on: April 30, 2018, 06:45:41 PM »

Mike123,

The lady answering the phone to both no's explained something which to be honest I didn't fully understand I'll be honest.

I also contacted Midsummer Solar and spoke to a guy there, he was unfamiliar with the issue I was suffering but did send me a idiot's guide to fault finding on an SP2000.

I idly speculated on buying a new unit from them with him but he indicated that the warranty would only be valid if a qualified person fitted it, I countered with how difficult could it be to install a Growatt unit and he replied "I'd be surprised".

Let me see PV panels in, PV panels out to inverter, AC in, CT in, BMS lead in and battery in - maybe I'm missing something. It is as close to plug and play as you could hope to get surely?

I see the SP2000 manual does indicate a route to setting the CT by 'tapping' the unit but I have been unable to perfect the technique.

Whilst I was playing this afternoon the system did find itself in 'Charging' mode (even though there was no CT indication of power being exported - there was at least 2kW being exported at the time) and I was actually present when it stopped which was precisely when it hit the 6% battery full mark.

I'll try sending a text to Neil.

Regards

Richard

« Last Edit: April 30, 2018, 10:31:06 PM by linesrg » Logged

1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
sam_cat
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« Reply #101 on: May 01, 2018, 07:54:53 AM »

I see the SP2000 manual does indicate a route to setting the CT by 'tapping' the unit but I have been unable to perfect the technique.

I struggled with the tapping technique to begin with (on both Growatt 1000s and a 1500s inverters).. Use a screwdriver, hold it by the pointy end and use the handle to tap. It seems to pick this up much much more readily.

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Mike123
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« Reply #102 on: May 01, 2018, 10:58:39 AM »

I find the tapping extremely frustrating also. Neil from Growatt appears to have a hard-skinned end to his finger through tapping these units '000s of times  Smiley
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linesrg
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« Reply #103 on: May 02, 2018, 03:30:48 PM »

Good Afternoon All,

The Growatt unit has been replaced with a known working model and 'lo and behold' I now seem to have a working system. Battery has charged beyond 8% which is, in it self, a significant event.

Currently in a 'text' dialogue with Neil from Growatt. Hopefully the 'problem' with the original unit can be resolved.

I now need to get on with mounting that battery unit to the wall, changing the inverter out and getting the PV panels on the roof.

Regards

Richard
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1.28kW on a Lorentz ETATRACK1000 + 1.44kW/ SB3000TL-21 (FIT), 1.28kW/ SB1700 (ROO/FIT). CTC GSi12 heat pump/Ecosol/Flowbox 8010e/Gledhill ASL0085 EHS/3off Navitron 4720AL Solar ET & Immersun T1060/T1070/T1090. 3.375kW/ SMA SB3600TL-21 and a Sunny Island 4.4M-12 c/w 15.2kWh battery and a Renault Zoe.
Mike123
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« Reply #104 on: May 02, 2018, 03:59:22 PM »

Richard

That is excellent news! Very happy for you

Mike
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