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کلید جریان باقی مانده(معروف به محافظ جان)
1 Mar 2020, 11:31
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@-Karimi
استاندارد IEC60909 کلا درباره اتصال کوتاه است.بخش 4-60909 به مثالها و محاسبات عملی پرداخته است.
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