ГОСТ 1494-77*
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<title>Ýëåêòðîòåõíèêà. Áóêâåííûå îáîçíà÷åíèÿ îñíîâíûõ âåëè÷èí</title>
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<div class=Section1>
<p class=MsoNormal align=center style='margin-bottom:12.0pt;text-align:center'><img width=134 height=141
src="img\37565.jpg" v:shapes="_x0000_i1025"></p>
<div style='border:none;border-bottom:solid windowtext .75pt;padding:0cm 0cm 1.0pt 0cm'>
<p class=MsoNormal align=center style='margin-bottom:6.0pt;text-align:center;
border:none;padding:0cm;
'><b style='mso-bidi-font-weight:normal'><span style='letter-spacing:2.0pt'>ÃÎÑÓÄÀÐÑÒÂÅÍÍÛÉ ÑÒÀÍÄÀÐÒ ÑÎÞÇÀ ÑÑÐ</span></b></p>
</div>
<p class=FR1> </p>
<p class=FR1>ÝËÅÊÒÐÎÒÅÕÍÈÊÀ</p>
<p class=FR2>ÁÓÊÂÅÍÍÛÅ ÎÁÎÇÍÀ×ÅÍÈß ÎÑÍÎÂÍÛÕ ÂÅËÈ×ÈÍ</p>
<p class=FR2> </p>
<p class=FR2 style='margin-bottom:0cm;margin-bottom:.0001pt'>ÃÎÑÒ 1494-77</p>
<p class=FR2 style='margin-bottom:0cm;margin-bottom:.0001pt'>(ÑÒ ÑÝÂ 3231-81)</p>
<p class=FR2> </p>
<p class=FR2> </p>
<p class=FR2 style='margin-bottom:0cm;margin-bottom:.0001pt'><span style='font-size:10.0pt'>ÃÎÑÓÄÀÐÑÒÂÅÍÍÛÉ ÊÎÌÈÒÅÒ ÑÑÑÐ
ÏÎ ÑÒÀÍÄÀÐÒÀÌ</span></p>
<p class=FR2 style='margin-bottom:0cm;margin-bottom:.0001pt'><span style='font-size:10.0pt'>ÌÎÑÊÂÀ</span></p>
<p class=FR2> </p>
<p class=FR2 style='margin-bottom:6.0pt;'><span style='letter-spacing:2.0pt'>ÃÎÑÓÄÀÐÑÒÂÅÍÍÛÉ ÑÒÀÍÄÀÐÒ ÑÎÞÇÀ ÑÑÐ</span></p>
<div align=center>
<table border=1 cellspacing=0 cellpadding=0 width="100%" style='width:100.0%;
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<td width="61%" style='width:61.06%;border-top:solid windowtext .5pt;
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<p class=MsoNormal align=center style='margin-top:6.0pt;margin-right:0cm;
margin-bottom:6.0pt;margin-left:0cm;text-align:center'><b>ÝËÅÊÒÐÎÒÅÕÍÈÊÀ</b></p>
<p class=MsoNormal align=center style='text-align:center'><b>Áóêâåííûå
îáîçíà÷åíèÿ îñíîâíûõ âåëè÷èí</b></p>
<p class=MsoNormal align=center style='margin-top:6.0pt;margin-right:0cm;
margin-bottom:6.0pt;margin-left:0cm;text-align:center'><span style='
mso-ansi-language:EN-US'>Electrotechnics. Letter symbols for fundamental
quantities</span></p>
</td>
<td width="38%" style='width:38.94%;border-top:solid windowtext .5pt;
border-left:none;border-bottom:solid windowtext .5pt;border-right:none;
padding:0cm 1.4pt 0cm 1.4pt'>
<p class=FR2 style='margin-top:6.0pt;margin-right:0cm;margin-bottom:6.0pt;
margin-left:0cm;'><span style='font-size:14.0pt;
mso-bidi-font-size:32.0pt'>ÃÎÑÒ <br>
1494-77<sup>*</sup></span><sup></sup></p>
<p class=FR2 style='margin-bottom:0cm;margin-bottom:.0001pt;'>(ÑÒ ÑÝÂ 3231-81)</p>
<p class=FR2 style='margin-top:6.0pt;margin-right:0cm;margin-bottom:6.0pt;
margin-left:0cm;'>Âçàìåí <br>
ÃÎÑÒ 1494-61</p>
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<p class=MsoNormal style='margin-top:6.0pt;margin-right:0cm;margin-bottom:6.0pt;
margin-left:0cm;text-align:justify;text-indent:14.15pt;'><sup><span style='font-size:10.0pt'>*</span></sup><span style='font-size:10.0pt'>
<i>Ïåðåèçäàíèå ìàðò 1983 ã. ñ Èçìåíåíèåì ¹ 1, óòâåðæäåííûì â ìàå 1983 ã.; Ïîñò
¹ 2174 îò 06.05.83 (ÈÓÑ ¹ 8-1983 ã.).</i></span></p>
<p class=MsoNormal style='margin-top:6.0pt;text-align:justify;'><b>Ïîñòàíîâëåíèåì Ãîñóäàðñòâåííîãî êîìèòåòà ñòàíäàðòîâ Ñîâåòà
Ìèíèñòðîâ ÑÑÑÐ îò 16 ñåíòÿáðÿ 1977 ã. ¹ 2233 ñðîê ââåäåíèÿ óñòàíîâëåí</b></p>
<p class=MsoNormal align=right style='margin-bottom:6.0pt;text-align:right;
'><b><u><span style='
mso-bidi-font-family:"Times New Roman"'>ñ 01.07.78</span></u></b></p>
<p class=MsoNormal style='text-align:justify;text-indent:14.15pt'>Íàñòîÿùèé
ñòàíäàðò óñòàíàâëèâàåò áóêâåííûå îáîçíà÷åíèÿ îñíîâíûõ ýëåêòðè÷åñêèõ è ìàãíèòíûõ
âåëè÷èí.</p>
<p class=MsoNormal style='text-align:justify;text-indent:14.15pt'>Áóêâåííûå
îáîçíà÷åíèÿ, óñòàíîâëåííûå â íàñòîÿùåì ñòàíäàðòå, îáÿçàòåëüíû äëÿ ïðèìåíåíèÿ â
äîêóìåíòàöèè âñåõ âèäîâ, ó÷åáíèêàõ, ó÷åáíûõ ïîñîáèÿõ, òåõíè÷åñêîé è ñïðàâî÷íîé
ëèòåðàòóðå.</p>
<p class=MsoNormal style='text-align:justify;text-indent:14.15pt'>Ñòàíäàðò
ïîëíîñòüþ ñîîòâåòñòâóåò ÑÒ ÑÝÂ 3231-81, Ïóáëèêàöèÿì ÌÝÊ 27-1, 27-1à è 27-2 è
ðåêîìåíäàöèè ÈÑÎ <span style='
mso-bidi-font-family:"Times New Roman"'>R</span>31.</p>
<p class=MsoNormal style='text-align:justify;text-indent:14.15pt'>Â ñòàíäàðòå
äàíî ñïðàâî÷íîå ïðèëîæåíèå <a href="#PO0000052"
title="Ïðèëîæåíèå 5">5</a>, ñîäåðæàùåå òàáëèöó âåëè÷èí, ðàñïîëîæåííûõ â
àëôàâèòíîì ïîðÿäêå, èõ áóêâåííûõ îáîçíà÷åíèé.</p>
<p class=MsoNormal style='text-align:justify;text-indent:14.15pt'><b>(Èçìåíåííàÿ
ðåäàêöèÿ, Èçì. ¹ 1).</b></p>
<h1><a name="_Toc132862105">1. ÎÁÙÈÅ ÏÎËÎÆÅÍÈß</a></h1>
<p class=MsoNormal style='text-align:justify;text-indent:14.15pt'>1.1. Â
êà÷åñòâå áóêâåííûõ îáîçíà÷åíèé âåëè÷èí äîëæíû ïðèìåíÿòüñÿ áóêâû ëàòèíñêîãî è
ãðå÷åñêîãî àëôàâèòîâ ïðè íåîáõîäèìîñòè ñ íèæíèìè è (èëè) âåðõíèìè èíäåêñàìè.</p>
<p class=MsoNormal style='text-align:justify;text-indent:14.15pt'>1.2.
Áóêâåííûå îáîçíà÷åíèÿ âåëè÷èí ëàòèíñêèìè áóêâàìè äîëæíû âûïîëíÿòüñÿ íàêëîííûì
øðèôòîì (êóðñèâîì), íàïðèìåð: <i>Í</i> - íàïðÿæåííîñòü ìàãíèòíîãî ïîëÿ.</p>
<p class=MsoNormal style='text-align:justify;text-indent:14.15pt'><a
name=PO0000004>1.3. Äëÿ óêàçàíèÿ âåêòîðíîãî õàðàêòåðà âåëè÷èíû áóêâåííîå
îáîçíà÷åíèå äîëæíî âûïîëíÿòüñÿ ïîëóæèðíûì øðèôòîì, íàïðèìåð: </a><i>Í</i> -
âåêòîð íàïðÿæåííîñòè ìàãíèòíîãî ïîëÿ.</p>
<p class=MsoNormal style='text-align:justify;text-indent:14.15pt'>Äîïóñêàåòñÿ
âçàìåí âûïîëíåíèÿ îáîçíà÷åíèÿ ïîëóæèðíûì øðèôòîì ïîìåùàòü íàä áóêâåííûì
îáîçíà÷åíèåì âåëè÷èí ñòðåëêó, íàïðèìåð: <sub><img border=0 width=19 height=21
src="img\81676.gif" v:shapes="_x0000_i1026"></sub> - âåêòîð
íàïðÿæåííîñòè ìàãíèòíîãî ïîëÿ.</p>
<p class=MsoNormal style='text-align:justify;text-indent:14.15pt'><a
name=PO0000005>1.4. Äëÿ óêàçàíèÿ íà òåíçîðíûé õàðàêòåð âåëè÷èíû åå
áóêâåííîå îáîçíà÷åíèå äîëæíî áûòü çàêëþ÷åíî â êðóãëûå ñêîáêè, íàïðèìåð:</a> (<span style='font-family:Symbol;
mso-hansi-font-family:"Times New Roman";
mso-char-type:symbol'>m</span><sub><span style='
mso-ansi-language:EN-US'>r</span></sub><span style='
mso-bidi-font-family:"Times New Roman"'>) - òåíçîð îòíîñèòåëüíîé ìàãíèòíîé
ïðîíèöàåìîñòè.</span></p>
<p class=MsoNormal style='text-align:justify;text-indent:14.15pt'>1.5.
Âåëè÷èíû, èçìåíÿþùèåñÿ âî âðåìåíè, îáîçíà÷àþò îäíèì èç ñïîñîáîâ, óêàçàííûõ â
òàáë. <a href="#TO0000002" title="Òàáëèöà 1">1</a>.</p>
<p class=MsoNormal align=right style='margin-top:6.0pt;margin-right:0cm;
margin-bottom:6.0pt;margin-left:0cm;text-align:right'><span style='letter-spacing:2.0pt'>Òàáëèöà</span> 1</p>
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<p class=MsoNormal align=center style='text-align:center'><a name=TO0000002><span style='font-size:10.0pt'>Íàèìåíîâàíèå
âåëè÷èíû</span></a>