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<DIV><FONT size=2 face=Arial>Este doplnim upozornenie - na 1f spotrebici bude
potom na oboch pracovnych vyvodoch 230V voci zemi. Treba na to nezabudnut
!!</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV> </DIV>
<DIV><FONT size=2
face=Arial>
Milan Mlynarčík</FONT></DIV>
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<DIV><FONT size=2 face=Arial><BR></FONT> </DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=milan.m@centrum.sk href="mailto:milan.m@centrum.sk">Milan
Mlynarčík</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=hw-list@list.hw.cz
href="mailto:hw-list@list.hw.cz">HW-news</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, May 13, 2012 4:10 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: 1f spotrebic na 3f
siti</DIV>
<DIV><BR></DIV>
<DIV><FONT size=2 face=Arial>Chyba uvahy :-)</FONT></DIV>
<DIV><FONT size=2 face=Arial>Cinny prikon nebude 10x230x2 , lebo fazove posuny
to zmensuju na 10x400. Medzi fazami nie je 2x230V. Nejaka jalovina samozrejme
bude navyse, ale jej velkost zavisi od konkretneho riesenia
trafa.</FONT></DIV>
<DIV><FONT size=2 face=Arial>Bod B - ano.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV> </DIV>
<DIV><FONT size=2
face=Arial>
Milan Mlynarčík</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial><BR></FONT> </DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=swz@volny.cz href="mailto:swz@volny.cz">Martin Záruba</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=hw-list@list.hw.cz
href="mailto:hw-list@list.hw.cz">HW-news</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, May 13, 2012 2:28
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> 1f spotrebic na 3f siti</DIV>
<DIV><BR></DIV>
<DIV><FONT size=2 face=Arial>Potrebuji pripojit 1f spotrebic 4kW. Proud je
tedy 4000/230=17,4A. Mam ale k dispozici jen jistic 3x16A. Napadlo me proto
udelat autotransformator 400/230V a zapojit jej mezi faze. Za stejnych
podminek by tedy mel autotransformator odebirat 4000/400=10A. To by jistic
ustal. Pokud ale kazdou fazi tece 10A, byl by cinny prikon 10x230x2=4600W.
Je to tedy tak, ze je odebirano z kazde faze 2kW cinneho vykonu a 300W
jaloviny?</FONT></DIV>
<DIV><FONT size=2 face=Arial>Pokud pouziji autotransformator, je spravna
uvaha, ze jadro musi prenaset 4000*(400-230)/400=1700W?</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Martin Zaruba</FONT></DIV>
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