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Rewiring Showtec PSA 161 3 Phase |
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levyte357 
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Joined: 10 May 2004 Location: UK, London Status: Online Points: 11113 |
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 Posted: 06 January 2012 at 2:16pm |
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Meaning upgrade Neutral wiring to 4mm2 ? Also looks like rear outputs are not Ceeform 16A ? Are they german Schukos ? |
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"This thing is brutally loud. Only been flogging it in the workshop so far but it was amusing listening to the windows rattle as the wave makes it way down the length of the workshop.".
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shagnasty
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Joined: 30 July 2007 Location: United Kingdom Status: Offline Points: 2623 |
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Posted: 06 January 2012 at 2:49pm |
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Yep they are german Shuko, best best is get a man with a punch to knock out some little plates the same size as schuko's with a cutout for white power cons in...
It goes without saying if you want the full 20A availiable on the powercon up-rated all line to 4mm, if you are happy with 16A D-curve breakers 2.5 will be fine.
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levyte357
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Posted: 06 January 2012 at 2:56pm |
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Not really a Powercon fan TBH, looks like standard blue 16A Ceeforms O/p sockets will fit on back? Edited by levyte357 - 06 January 2012 at 3:02pm |
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"This thing is brutally loud. Only been flogging it in the workshop so far but it was amusing listening to the windows rattle as the wave makes it way down the length of the workshop.".
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shagnasty
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Posted: 06 January 2012 at 6:29pm |
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If you get the small flange McKennes "Cee-Form" branded ones they might or if you can find then the "fanton" Art.71087 are the smallest mount plates I ever seen but the uk supplier I use doesn't carry them anymore...
TBH I think it would be just a bit too tight, even these babies http://www.fanton.com/index.php?lang=en&area=fme&categoria=F1-010&sottocategoria=F2-030&prodotto=71087 are quite a lot bigger than a Schuko....
But that said you could easily get a 2 U flat blanking panel, chop the ends off it so it was the same width as the back panel, cut it for 6 x 16A these would fit well http://uk.rs-online.com/web/p/bs4343-iec309-industrial-accessories/0488983/ and just ignore the drilling from the schukos, either axe out the old panel with a jig saw (cover guts with something to keep metal dust off them.....) or hole saw through using the new panel as a template....
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joedj
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Joined: 25 January 2012 Location: nottingham, Not Status: Offline Points: 96 |
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Posted: 08 February 2012 at 6:42am |
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some nice shunts and ammeters on flea bay all the way upto 100amp!! in digital format, blue, green, red blah blah. cheap too!
also a note:_ To measure larger currents, a resistor called a shunt is placed in parallel with the meter. The resistances of shunts is in the integer to fractional milliohm range. Nearly all of the current flows through the shunt, and only a small fraction flows through the meter. This allows the meter to measure large currents. Traditionally, the meter used with a shunt has a full-scale deflection (FSD) of 50 mV, so shunts are typically designed to produce a voltage drop of 50 mV when carrying their full rated current.
notes to earlier hall effects In AC circuits, a current transformer converts the magnetic field around a conductor into a small AC current, typically either 1 A or 5 A at full rated current, that can be easily read by a meter. In a similar way, accurate AC/DC non-contact ammeters have been constructed using Hall effectmagnetic field sensors
hope that throws abit more light on the subject?
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joedj
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Posted: 08 February 2012 at 6:44am |
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check these as an example type I've seen used in some of our solar install work on three phase cable back to incoming export tarriff meter.
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In the Audio world Intelligence is measured by how you like your bass...
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joedj
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Posted: 08 February 2012 at 6:56am |
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sorry for triple posts guys just trying to help find info
but from what I can see is that the past thru winding will induce a current flow upto a certain point before becoming saturared so will be in effect no good pass that point, hence the need to move upto a different coil with different ratio turns as per table shows in post above. I am sure meters will keep reading upto a point digitally say 100 amps but it seems coils passed say 50 amps or what ever there rated for will not read, past that point without changing to get ratios right for ampere reading. hope it makes sense! ramble ramble by me lol it maybe simpler just to get a ready made display and shunt as shown here or even better this..... cheers Joe DJ
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shagnasty wrote: