تأثير القيمة الاحتمالية لتيار القصر الأعظمي على إمكانية زيادة فترة خدمة الأجهزة الكهربائية
Abstract
It is known that the electric networks develop with time. This leads to the increase of electrical loads; consequently, malfunction currents become larger. Therefore, the invested electrical equipment, such as circuits, is not sufficient for the required purpose. They are supposed to be replaced; however, this leads to additional expenses which could hardly be borne immediately. Taking into consideration the little probability of the occurrence of greater intensity of malfunction currents, we can be patient with exchanging this equipment gradually. At the same time, this may expose us to the probability of risk due to the insufficiency of these equipments capacity for the load development.
من المعروف أن الشبكات الكهربائية تتطور مع الزمن، وهذا يؤدي إلى ازدياد الأحمال الكهربائية، وبالتالي زيادة تيارات القصر (تيارات الأعطال). لذلك فإن المعدات الكهربائية المستثمرة كالقواطع لا تفي بالغرض، ومن المفروض استبدالها، مما يؤدي إلى نفقات إضافية قد لا يمكن تحملها بشكل فوري. فإذا أخذنا بالاعتبار الاحتمال القليل لحدوث الحالة الأكثر شدة لتيارات العطل، فإننا نستطيع التريث بتبديل هذه المعدات بحيث يتم تبديلها تدريجياً. وفي الوقت نفسه قد تتعرض الأجهزة الكهربائية لاحتمال المخاطرة بعدم كفاية استطاعة هذه المعدات لتطور الحمل.
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