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5- Transformerless Power Supply | وحدة تغذية بدون محول

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<span style="background-color: white; color: #374240; font-family: Arial, Tahoma, Helvetica, FreeSans, sans-serif; font-size: 18px; line-height: 25.2px;">شرح تركيب وطريقة عمل وحدة تغذية بدون محول Transformerless Power Supply.</span><br />
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5- Transformerless Power Supply | وحدة تغذية بدون محول

شرح تركيب وطريقة عمل وحدة تغذية بدون محول Transformerless Power Supply. الشرح فى الفيديو التالى

مزيد من المعلومات »

4:12 ص

أيهما أخطر الAC أم الDC ؟

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<span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">    في الدرس السابق من دورة تعلم الالكترونيات تعرفنا على التيار المستمر والمتناوب و بشكل عام التيار المتناوب AC أخطر على الإنسان من التيار المستمر DC ، هذا للترددات المنخفضة ويكون تأثير التيار المتناوب (50-60 ) هرتز أخطر 3-5 أضعاف تأثير التيار المستمر عند نفس قيمة الجهد.– تختلف خطورة التيار المتناوب تبعاً لقيمة التردد وهي حسب منحنى خاص، وتصل أعلى قيمة للخطورة عند التردد 50 – 60 هيرتز .– التيار المتناوب ذو الترددات المرتفعة و التيار المرتفع يعتبر أقل خطراً مقارنة مع نفس القيمة للتيار المستمر.– من أخطر ما يتعرض له المصاب في الصعقة الكهربائية هو ظاهرة اختلاج القلب fibrillation ، وهي ظاهرة اضطراب انتظام دقات القلب وبالتالي توقف ضخ الدم أو ضعف الضخ، والمسبب لهذه الظاهرة هو التيار المتناوب ويحدد درجة هذه الخطورة الطريق الذي يمر به التيار مثلا يعتبر الطريق يد يسرى-يد يمنى أخطر من يد يسرى-رجل يسرى….– الخطورة تعتمد إضافة إلى قيمة التيار ونوع التيار على الزمن الذي يتم التعرض له، والمنحنى للزمن هو ليس خطي ويختلف ما بين التيار المستمر والمتناوب.</span></div>
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أيهما أخطر الAC أم الDC ؟

في الدرس السابق من دورة تعلم الالكترونيات تعرفنا على التيار المستمر والمتناوب و بشكل عام التيار المتناوب AC أخطر على الإنسان من ال...

مزيد من المعلومات »

6:10 ص

ما هوا الفرق بين التيار المتردد (AC) والتيار الثابت (DC)

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<br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">أولا : التيار المتردد AC :</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">أ‌- يتميز بقدرته على تغير المنحى</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">ب‌- خصائص الشكل الموجى الجيبى للتيار المتردد الاشارة الكهربية إما أن تكون تيار أو جهد أيهما يحمل المعلومات ولكن عادة نعنى الجهد.</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">الخصائص :</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">1- السعة أو المدى Amplitude :A هى أقصى جهد تصل اليه الاشارة وتقاس بالفولت .</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">2- جهد القمة او الذروة Peak voltage :Vp هو اسم اخر للسعة.</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">3- الجهد من القمة إلى القمة Peak-peak voltage : Vpp</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">هو ضعف جهد القمة ( أو السعة ) . عند استخدام الاوسليسكوب عادة ما نقيس الجهد من القمة للقمة .</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">4- الفترة الزمنية (الزمن الدورى) Time period :T</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">هو الزمن الذى تأخذة الإشارة فى دورة كاملة ويقاس بالثوانى .</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">عمليا تستخدم وحدات الملى ثانية ( 1ثانية = 1000 ملى ثانية ) والميكروثانية ( 1 ثانية = مليون ميكروثانية ) .</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">5- التردد Frequency :F </span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">هو عدد الدورات فى الثانية . ويقاس بالهرتز HZ .</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">عمليا تستخدم وحدات الكيلو هرتز KHZ ( 1000 هرتز ) والميجا هرتز ( مليون هرتز ) .</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">لب يلغي كل منهما الاخر كمتوسط .</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">والتيار المتردد هو الدي نستعمله في منازلنا</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">ثانيا : التيار المستمر DC :</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">التيار المستمر DC يمر دائما فى نفس الاتجاه وقد يزداد أو ينقص .</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">جهد التيار المستمر إما دائما موجب (أو دائما سالب) ولكنه قد يزداد أو ينقص .</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">الدوائر الألكترونية عادة تحتاج إلى مصدر تيار ثابت DC مستقر أى ثابت عند قيمة واحدة أو مصدر تيار ثابت DC ناعم أى به تغيرات طفيفة تسمى تموجات أو تعرجات ripple .</span><br style="background-color: white; box-sizing: border-box; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: x-large; line-height: 26px; outline: 0px; text-align: right; transition: all 0.5s ease;" /><span style="background-color: white; color: #5e5e5e; font-family: Georgia, 'Times New Roman', serif; font-size: large; line-height: 26px; text-align: right;">البطاريات ومصادر القدرة المنظمة تعطى تيار مستمر DC مستقر .</span></div>
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ما هوا الفرق بين التيار المتردد (AC) والتيار الثابت (DC)

أولا : التيار المتردد AC : أ‌- يتميز بقدرته على تغير المنحى ب‌- خصائص الشكل الموجى الجيبى للتيار المتردد الاشارة الكهربية إما أن تك...

مزيد من المعلومات »

6:09 ص

كيفية معرفة وتحديد أطراف الكونتاكتور :

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<a href="http://www.electroecole.com/2016/02/keyboardshortcuts.html" style="background: 0px 0px; border: 0px; box-sizing: border-box; color: #222222; outline: 0px; padding: 0px; text-decoration: none; transition: all 0.5s ease; vertical-align: baseline;">اختصارات لوحة المفاتيح</a></h3>
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<a href="http://www.electroecole.com/2016/02/laser.html" style="background: 0px 0px; border: 0px; box-sizing: border-box; color: #222222; outline: 0px; padding: 0px; text-decoration: none; transition: all 0.5s ease; vertical-align: baseline;">تعرف على الليزر LASER</a></h3>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiYLshjP2AqQWS29SLfDmYi5OUKo81-WnLG6lLIXQj9qjvJRAgrUzNLQ3N3TRnfNHrAOx3EOqrYgpUya1G8yyNW92_zRKSe6g-VGOJd2hCmWxBYSLtIFW3okQu-AKcfaht2HGdkj1sz1aG-/s1600/1970660_1482548622006168_8078109688286459566_n.jpg" imageanchor="1" style="background: 0px 0px; border: 0px; box-sizing: border-box; color: #5271b3; margin-left: 1em; margin-right: 1em; outline: 0px; padding: 0px; text-decoration: none; transition: all 0.5s ease; vertical-align: baseline;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiYLshjP2AqQWS29SLfDmYi5OUKo81-WnLG6lLIXQj9qjvJRAgrUzNLQ3N3TRnfNHrAOx3EOqrYgpUya1G8yyNW92_zRKSe6g-VGOJd2hCmWxBYSLtIFW3okQu-AKcfaht2HGdkj1sz1aG-/s320/1970660_1482548622006168_8078109688286459566_n.jpg" style="background: 0px 0px; border: none; box-sizing: border-box; max-width: 100%; outline: 0px; padding: 0px; position: relative; transition: all 0.5s ease; vertical-align: baseline;" width="269" /></a></div>
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: large; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" /><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" /><b style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">كيفية معرفة وتحديد أطراف الكونتاكتور :</b><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" /><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" />قبل توصيل أى كونتاكتور يجب أولا تحديد نقاط التلامس الرئيسية</span></div>
<div dir="rtl" style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; text-align: right; transition: all 0.5s ease; vertical-align: baseline;" trbidi="on">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: large; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">.ونقاط التلامس المساعدة وكذلك طرفى البوبينة(Coil).<br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" /><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" /><b style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">بالنسبة للنقاط الرئيسية (Main Contacts) .</b></span><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" /><div class="separator" style="background: 0px 0px; border: 0px; box-sizing: border-box; clear: both; outline: 0px; padding: 0px; text-align: center; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: large; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><b style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhXwgrpLt4Lk7T4UkoY8HhoyE_7xiy-xBKKZd-WiOl9mGbuasJfM2oU3XGCCCpkEYyqnEWI0tbtwi5hS3ekLlQcgV4RIPztc752TXtKc36qPy_2tShRACkLufKOshdBZqhFUG4wUedVv4VB/s1600/10171874_1482549558672741_7997044848281953241_n.jpg" imageanchor="1" style="background: 0px 0px; border: 0px; box-sizing: border-box; color: #5271b3; font-weight: 400; margin-left: 1em; margin-right: 1em; outline: 0px; padding: 0px; text-decoration: none; transition: all 0.5s ease; vertical-align: baseline;"><img border="0" height="193" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhXwgrpLt4Lk7T4UkoY8HhoyE_7xiy-xBKKZd-WiOl9mGbuasJfM2oU3XGCCCpkEYyqnEWI0tbtwi5hS3ekLlQcgV4RIPztc752TXtKc36qPy_2tShRACkLufKOshdBZqhFUG4wUedVv4VB/s320/10171874_1482549558672741_7997044848281953241_n.jpg" style="background: 0px 0px; border: none; box-sizing: border-box; max-width: 100%; outline: 0px; padding: 0px; position: relative; transition: all 0.5s ease; vertical-align: baseline;" width="320" /></a></b></span></div>
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: large; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><b style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"></b><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" />دائما يكونوا ثلاث نقاط مفتوحة(Normally Open).<br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" />بالنسبة لنقاط التلامس المساعدة (Auxiliary Contacts)</span></div>
<div dir="rtl" style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; text-align: right; transition: all 0.5s ease; vertical-align: baseline;" trbidi="on">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: large; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">يوجد منها نقاط مفتوحة NO و نقاط مغلقة NC .<br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" />النقاط المساعدة المفتوحة دائما تأخد الأرقام 13 14 أو ما </span></div>
<div dir="rtl" style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; text-align: right; transition: all 0.5s ease; vertical-align: baseline;" trbidi="on">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: large; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">يليها من أرقام تبدأ بالرقم 3 مثل 23 24 وهكذا .<br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" />النقاط المساعدة المغلقة دائما تأخذ الأرقام 11 12 أو ما يليها </span></div>
<div dir="rtl" style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; text-align: right; transition: all 0.5s ease; vertical-align: baseline;" trbidi="on">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: large; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">من أرقام تبدأ بالرقم 1 مثل 21 22 وهكذا .<br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" />ويمكنك تحديد ما اذا كانت النقطة المساعدة مفتوحة أو مغلقة</span></div>
<div dir="rtl" style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; text-align: right; transition: all 0.5s ease; vertical-align: baseline;" trbidi="on">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: large; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"> بواسطة الأفوميتر أو مصباح التوالى .<br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" />بعض الكونتاكتورات تحمل عدد معين من نقاط التلامس المساعدة</span></div>
<div dir="rtl" style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; text-align: right; transition: all 0.5s ease; vertical-align: baseline;" trbidi="on">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: large; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">ولا يمكن اضافة أى نقاط أخرى .كما يوجد كثير من الماركات ،</span></div>
<div dir="rtl" style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; text-align: right; transition: all 0.5s ease; vertical-align: baseline;" trbidi="on">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: large; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"> الكونتاكتور يحمل نقطة تلامس مساعدة واحدة ويمكن أن يركب</span></div>
<div dir="rtl" style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; text-align: right; transition: all 0.5s ease; vertical-align: baseline;" trbidi="on">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: large; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"> عليه قطعة تحمل عددا من النقاط المساعدة الاضافية ، وتصبح</span></div>
<div dir="rtl" style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; text-align: right; transition: all 0.5s ease; vertical-align: baseline;" trbidi="on">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: large; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"> جزءا لا يتجزأ من الكونتاكتور.<br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" />بالنسبة لأطراف البوبينة (Coil):<br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" />يكون للبوبينة طرفان يرمز لهم بA1-A2 أو A-B </span></div>
<div dir="rtl" style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; text-align: right; transition: all 0.5s ease; vertical-align: baseline;" trbidi="on">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: large; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">وعند قياسها بواسطة الأفوميتر ستعطى قيمة مقاومة معينة </span></div>
<div dir="rtl" style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; text-align: right; transition: all 0.5s ease; vertical-align: baseline;" trbidi="on">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: large; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">وليس صفرا . وتتوفر للكونتاكتورات بوبينات تعمل على قيم جهد</span></div>
<div dir="rtl" style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; text-align: right; transition: all 0.5s ease; vertical-align: baseline;" trbidi="on">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: large; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"> مختلفة منها 24،48،110،220 فولت.<br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" />لا يتوفر كونتاكتورات بأى تيار تريده ولكن بقيم متفاوتة </span></div>
<div dir="rtl" style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; text-align: right; transition: all 0.5s ease; vertical-align: baseline;" trbidi="on">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: large; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">مثلا 9،12،18،26،32 أمبير .</span></div>
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كيفية معرفة وتحديد أطراف الكونتاكتور :

الحواسب اختصارات لوحة المفاتيح الالكترونيات تعرف على الليزر LASER كيفية معرفة وتحديد أطراف الكونتاكتو...

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4:35 ص

الاعطال الكهربائيه Electrical Faults

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<h2 style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; clear: both; color: #555555; font-family: Electrolize, ge_ss_threeregular; line-height: 26px; margin: 0px 0px 15px; outline: 0px; padding: 0px; position: relative; text-align: center; transition: all 0.5s ease; vertical-align: baseline;">
<b style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><span style="background: 0px 0px; border: 0px; box-sizing: border-box; color: red; font-family: Arial, Helvetica, sans-serif; font-size: large; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">الاعطال الكهربائيه Electrical Faults</span></b></h2>
<div class="separator" style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; clear: both; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; text-align: center; transition: all 0.5s ease; vertical-align: baseline;">
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhuLxtQMqNkmVefxO53f5bdIlN6TPOp8kRSCgSxAHdv7bSk4AcZlDw4sjjNm3kMh21mly_u6GFX_aqAnscOqKuHlIb9A9xNG75tgSany9cU9GCoAevpdO5y5zcbFMj7SnPXFFyjj1ZvELSG/s1600/Electrical+Faults.jpg" imageanchor="1" style="background: 0px 0px; border: 0px; box-sizing: border-box; color: #5271b3; margin-left: 1em; margin-right: 1em; outline: 0px; padding: 0px; text-decoration: none; transition: all 0.5s ease; vertical-align: baseline;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhuLxtQMqNkmVefxO53f5bdIlN6TPOp8kRSCgSxAHdv7bSk4AcZlDw4sjjNm3kMh21mly_u6GFX_aqAnscOqKuHlIb9A9xNG75tgSany9cU9GCoAevpdO5y5zcbFMj7SnPXFFyjj1ZvELSG/s400/Electrical+Faults.jpg" style="background: 0px 0px; border: none; box-sizing: border-box; max-width: 100%; outline: 0px; padding: 0px; position: relative; transition: all 0.5s ease; vertical-align: baseline;" width="400" /></a></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" /></span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" /></span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">ما هي الاعطال الكهربائيه ؟ ما هي انواعها ؟ كيف يتم تصنيفها ؟ ما هو اخطر الاعطال الكهربائيه ؟ لماذا يتم دراسه الاعطال الكهربائيه ؟ ما هي نسبة حدوث كل عطل ؟ ما هي مسببات الاعطال الكهربائيه ؟ </span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" /></span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; color: red; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><b style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">ما هي الاعطال ؟</b></span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">هي اي حدث يؤدي الى تغير القيم الطبيعيه في المنظومه الكهربائيه سواء في التيار او الفولتيه او التردد او اي قيم اخرى حيث ان هذه القيم تتغير عند حدوث اي امر غير طبيعي . </span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" /></span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; color: red; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><b style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">تصنيف الاعطال الكهربائيه :</b></span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">يمكن تصنيف الاعطال الكهربائيه الى ما يلي :</span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">1- اعطال كهربائيه عابره </span></div>
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<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">2- اعطال كهربائيه دائمه </span></div>
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<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" /></span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">ويمكن ان تصنف الى :</span></div>
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<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" /></span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><span style="background: 0px 0px; border: 0px; box-sizing: border-box; color: red; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><b style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">Balance faults</b></span> </span></div><script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>

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<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">وهي الاعطال التي تتضمن حدوث العطل في الثلاث فاز معا .</span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">1- الثلاث فازات معا</span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">2- الثلاث فازات مع الارض</span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; color: red; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" /></span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; color: red; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><b style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">UnBalance Faults</b></span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">وهي الاعطال التي تحدث في فاز او فازين .</span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" /></span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">1- فاز مع الارض</span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">2-فازين مع الارض</span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">3- فازين معا </span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" /></span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" /></span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">ويعتبر عطل الثلاث فاز معا ( L-L-L ) اخطر الاعطال وينتج عنه تيارات عطل عاليه جدا ولكن نسبه حدوث عطل ثلاث فاز معا قليله جدا وتستخدم قيم هذا العطل لاختيار اعلى Breaking Capacity للسيركت بريكر .</span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" /></span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">اما بالنسبه للعطل (L-E) الفاز مع الارضي فهو الاكثر شيوعا ونسبه حدوثه عاليه جدا مقارنه بباقي الاعطال .</span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; color: red; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><b style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">لماذا يتم دراسه هذه الاعطال ؟</b></span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">1- تؤثر في اختيار مساحة مقطع الموصل الناقل , بحيث يجب على الناقل ان يتحمل هذه القيم لفترات زمنيه محدده.</span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">2- حتى يتم ضبط اجهزه الحمايه على قيم صحيحه .</span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><br style="box-sizing: border-box; outline: 0px; transition: all 0.5s ease;" /></span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; color: red; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;"><b style="background: 0px 0px; border: 0px; box-sizing: border-box; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">ما هي مسببات هذه الاعطال ؟</b></span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">ممكن ان تكون حوادث طبيعيه مثل الرياح او العواصف الرعديه وغيرها من العوامل الطبيعيه ,وممكن تحدث نتيجه اخطاء بشريه كضرب الكوابل خلال عمليات الحفر وغير ذلك , وممكن تحدث نتيجه اختيار قيم غير مناسبه سواء في مساحه مقطع الموصل او العوازل او اي جزء اخر, وجزء كبير جدا من الاعطال ينتج عن انهيار العوازل . </span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">ما نسبه حدوث هذه الاعطال على الخطوط الهوائيه والكوابل المدفونه؟</span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">نسبه حدوث الكوابل الارضيه بالنسبه للهوائيه قليله جدا , فالاعطال على الكوابل نادرا ما تحدث وتحدث اما عن طريق ضرب الكوابل بالحفريات او السرقات او انتهاء عمر العوازل.</span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">اما الخطوط الهوائيه فاعطالها كثيره جدا ولكن جزء كبير منها عابر لذلك يتم استخدام Autorecloser + section analyzer </span></div>
<div style="background: 0px 0px rgb(255, 255, 255); border: 0px; box-sizing: border-box; color: #5e5e5e; font-family: Electrolize, ge_ss_threeregular; font-size: 15px; line-height: 26px; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">
<span style="background: 0px 0px; border: 0px; box-sizing: border-box; font-family: Arial, Helvetica, sans-serif; font-size: medium; outline: 0px; padding: 0px; transition: all 0.5s ease; vertical-align: baseline;">والذي سوف يكون له تدوينه خاصه بهم قريبا ان شاء الله</span></div>
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الاعطال الكهربائيه Electrical Faults

الاعطال الكهربائيه Electrical Faults ما هي الاعطال الكهربائيه ؟ ما هي انواعها ؟ كيف يتم تصنيفها ؟ ما هو اخطر الاعطال الكهربائيه...

مزيد من المعلومات »

4:30 ص

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<span style="background-color: white; color: red; font-family: Tahoma; font-size: large; line-height: 20.592px; text-decoration: none;"><b>كتب رائعة في التبريد والتكييف كلها باللغة العربية</b></span></div>
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<b style="font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;">عناوين الكتب :</span></b></div>
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<b style="background-color: white; color: #666666; font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"></span></b><br style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 15.84px; line-height: 20.592px; text-align: right;" /><br style="background-color: white; color: #666666; font-family: Tahoma; font-size: 10.6667px; text-align: left;" /><br style="background-color: white; color: #666666; font-family: Tahoma; font-size: 10.6667px; text-align: left;" /><b style="background-color: white; color: #666666; font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"></span></b></div>
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<b style="font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"><span style="color: red;">01 - اساسيات التبريد والتكييف عملي</span></span></b></div>
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<b style="background-color: white; color: #666666; font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"></span></b><br style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 15.84px; line-height: 20.592px; text-align: right;" /><b style="background-color: white; color: #666666; font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"></span></b></div>
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<b style="font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"><span style="color: red;">02 - اساسيات التبريد والتكييف ورشة</span></span></b></div>
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<b style="background-color: white; color: #666666; font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"></span></b><br style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 15.84px; line-height: 20.592px; text-align: right;" /><b style="background-color: white; color: #666666; font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"></span></b></div>
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<b style="font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"><span style="color: red;">03 - اساسيات التبريد والتكييف</span></span></b></div>
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<b style="font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"><span style="color: red;">04 - اساسيات علم الحراريات والموائع</span></span></b></div>
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<b style="font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"><span style="color: red;">05 - التكييف المركزي</span></span></b></div>
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<b style="font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"><span style="color: red;">06 - الرسم الفني في التبريد والتكييف</span></span></b></div>
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<b style="background-color: white; color: #666666; font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"></span></b><br style="background-color: white; color: #666666; font-family: 'Trebuchet MS', Trebuchet, Verdana, sans-serif; font-size: 15.84px; line-height: 20.592px; text-align: right;" /><b style="background-color: white; color: #666666; font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"></span></b></div>
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<b style="font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"><span style="color: red;">07 - انظمة التحكم فى التبريد والتكييف</span></span></b></div>
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<b style="font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"><span style="color: red;">08 - تطبيقات حاسب آلي فى التبريد والتكييف</span></span></b></div>
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<b style="font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"><span style="color: red;">09 - صيانة انظمة التبريد والتكييف</span></span></b></div>
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<b style="font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"><span style="color: red;">10 - نظم ومعدات تبريد</span></span></b></div>
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<b style="font-family: Tahoma; font-size: 10.6667px; text-align: left;"><span style="font-size: medium;"><span style="color: red;">11 - نظم ومعدات تكييف</span></span></b></div>
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كتب رائعة في التبريد والتكييف كلها باللغة العربية عناوين الكتب : 01 - اساسيات التبريد والتكييف عملي 02 - اساسي...

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موقع رائع لمصممي الإنارة وغيرها

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<span style="font-family: "dr"; text-align: -webkit-center;"><b><span style="font-size: medium;">هذا الموقع رائع جدا لمن يريد معلومات وافية وعملية عن تصميم مشاريع الإنارة والتكييف وغيرها أحببت أن يطلع عليه الإخوة الأكرام ممن لهم اهتمام بهذه المواضيع وهو يضم أهم المعلومات النظرية والعملية وجداول اكسل مهمة </span></b></span></div>
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موقع رائع لمصممي الإنارة وغيرها

موقع رائع لمصممي الإنارة وغيرها هذا الموقع رائع جدا لمن يريد معلومات وافية وعملية عن تصميم مشاريع الإنارة والتكييف وغيرها أحببت أن ...

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1:27 م

كل ما يخص اللوحات الكهربائية من انواع, تصميم ,تصنيع ,تركيب ,اختبار,اطلاق تيار

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كل ما يخص اللوحات الكهربائية من انواع, تصميم ,تصنيع ,تركيب ,اختبار,اطلاق تيار

كل ما يخص اللوحات الكهربائية من انواع, تصميم ,تصنيع ,تركيب ,اختبار,اطلاق تيار بسم الله الرحمن الرحيم السلام عليكم...

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5- Transformerless Power Supply | وحدة تغذية بدون محول

أيهما أخطر الAC أم الDC ؟

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موقع رائع لمصممي الإنارة وغيرها

كل ما يخص اللوحات الكهربائية من انواع, تصميم ,تصنيع ,تركيب ,اختبار,اطلاق تيار

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