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Author Topic: Growatt SP2000 wired CT.  (Read 1603 times)
Tinbum
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« on: June 28, 2017, 09:39:31 AM »

Would anyone have a spare Growatt SP2000 wired CT that they are not using that they are willing to sell?

 (As, in my setup, everything is in one place there is no point in me using a wireless one and my secondhand unit came without the wired one).

Alternatively could  anyone photograph theirs so I could make one.
« Last Edit: June 28, 2017, 09:46:01 AM by Tinbum » Logged

85no 58mm solar thermal tubes, 28.5Kw PV, 3 x Sunny Backup 5048, 3x Sunny Island 5048, 2795 Ah (c20) Rolls batteries 48v, Atmos wood gasification boiler, Brosley wood burner, 2000lt buffer tank and 250lt DHW
Mike123
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« Reply #1 on: September 18, 2017, 03:13:18 PM »



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sam_cat
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« Reply #2 on: September 18, 2017, 03:16:20 PM »

Googling for the numbers on thh case (  LEM Top 90-S/SP2 )  I turn up this:

http://uk.rs-online.com/web/p/current-transducers/7934632/

BUT the part number bottom left differs..

What connector is on the other end, and can you make out which wires go where?
« Last Edit: September 18, 2017, 03:18:14 PM by sam_cat » Logged
Tinbum
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« Reply #3 on: September 18, 2017, 04:06:58 PM »

Thank you both.

I did actually manage to get a photo of one but didn't know which terminals were used on the RJ45 plug.  I also found that link on the RS website and noted the difference. Possibly the wire length?

I inquired with a seller on Ebay that was selling an alternative for larger diameter cables but he couldn't help other than suggest contacting Growatt.

I did and after about 10 days (last week) one arrived in the post FOC.

I'm a little surprised that it is in fact just the CT (and long cable) grafted onto a short bit of Ethernet cable with an RJ45 on the other end all covered in heat shrink. Perhaps the internal cores won't  connect very well inside an RJ45 itself. Oh and I think its the brown and orange (B) that are used.
« Last Edit: September 18, 2017, 04:10:38 PM by Tinbum » Logged

85no 58mm solar thermal tubes, 28.5Kw PV, 3 x Sunny Backup 5048, 3x Sunny Island 5048, 2795 Ah (c20) Rolls batteries 48v, Atmos wood gasification boiler, Brosley wood burner, 2000lt buffer tank and 250lt DHW
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