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Current Cost Support Forum • View topic - photovoltaic monitoring

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Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 9 posts ] 
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 Post subject: photovoltaic monitoring
PostPosted: Sun Feb 26, 2012 6:51 pm 
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Joined: Mon Feb 13, 2012 10:19 pm
Posts: 5
hi, any chance of changing the CT sensors to one way flow, when using current this could show the live usage and show a red LED on the energy monitor, when current flows the other way this would not be recorded so would register as 0 and show up as a green LED . . . so from a quick glance across the room if its red i know i am importing and green i am exporting

or if any one knows how to do this then post a comment


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PostPosted: Mon Feb 27, 2012 1:43 pm 
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Joined: Tue Jul 05, 2011 11:46 am
Posts: 35
[quote="emailfriendsuk"]hi, any chance of changing the CT sensors to one way flow, when using current this could show the live usage and show a red LED on the energy monitor, when current flows the other way this would not be recorded so would register as 0 and show up as a green LED . . . so from a quick glance across the room if its red i know i am importing and green i am exporting

No! Of course you _can_ get monitors that detect the direction of current flow, but the cc clamps are a relatively low cost, safe & non intrusive. They detect the magnitude of the current and can't tell its direction.

It is possible to use connect 2 clamps and 2 transmitters and a monitor and then use software to subtract the house power from the solar to get the 'direction' but this needs a bit of computing power. To see how do that I'm afraid you'll have to do what you should've done before posting & read the extensive discussion about this on this forum! ie rtff...


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PostPosted: Fri Apr 13, 2012 12:51 pm 
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Joined: Fri Apr 13, 2012 12:03 pm
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Why dont Current Cost make a device that can accurately calculate Household electrical consumption, subtracting

the generated exported solar power from the actual imported electricity?

Many people would buy it.


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PostPosted: Fri Apr 13, 2012 6:19 pm 
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Joined: Sat Apr 16, 2011 1:10 pm
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Location: East Sussex


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PostPosted: Sat Apr 14, 2012 1:13 pm 
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Joined: Fri Jun 03, 2011 11:12 pm
Posts: 38
Location: UK
I'm going out on a limb here, so i may be wrong but.....

As far as i'm aware, current clamps (not neccesarily current cost clamps) would normally give out a positive or negative voltage depending on the direction of any current flow.

Therefore, using two clamps connected together in series, in opposite polarity you would get a differential reading. One clamp would subtract the value of the other, so to speak. You would of course, only be showing a difference between on grid and off grid, not the total houshold consumption.

I don't know if this is of any use to anyone or if it would work but maybe someone can do something with the idea?


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PostPosted: Sun Apr 15, 2012 3:32 am 
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Location: Melbourne, Australia

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PostPosted: Mon Apr 16, 2012 5:20 am 
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Joined: Fri Jun 03, 2011 11:12 pm
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Location: UK


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PostPosted: Thu Apr 19, 2012 8:36 pm 
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Joined: Fri Jun 03, 2011 11:12 pm
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Location: UK


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PostPosted: Sat Oct 20, 2012 11:12 am 
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Joined: Sat Oct 20, 2012 11:06 am
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Monitoring and control of photovoltaic systems is essential for reliable functioning and maximum yield of any solar electric system.


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