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| Subject: | Re: LF: Current Transformers (off topic, but expertise probably here) |
| From: | Alberto di Bene <[email protected]> |
| Date: | Wed, 14 Sep 2005 16:31:06 +0200 |
| Delivery-date: | Wed, 14 Sep 2005 15:32:09 +0100 |
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Andy wrote: Maybe I am missing something, but given that the ratio of primary to secondary voltage is a linear function of the turn ratio, if you compute : 240 / 0.3 = 800, then 800 is the turn ratio. If the secondary has just one turn, shouldn't the primary have 800 turns ?The one turn generated about 0.3V RMS from a 240V input, although after some prolonged testing as a CT, I realised I had got the turns calculation some way out, but thats by-the-way, (it was actually nearer 5000 than 4000). That suggested the turns ratio as approximately 4000 turns on the 240V mains winding. 73 Alberto I2PHD |
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