أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
As per the BS EN5 - Part4, we have to provide SPD's (Surge protection devices) from the protection of transient induced overvoltage (indirect lightning) to the internal equipment's.
If Incoming service line is overhead - Class I or Buried Class II SPD.
But why we have provide the co-ordination SPD for the internal equipment's. We are provide already at the incoming service lines for Class I or II.
If indirect lightning happened, service entrance SPD will protect to the system but what will do the co ordination SPD.
هل تحتاج لمساعدة في كتابة سيرة ذاتية تحتوي على الكلمات الدلالية التي يبحث عنها أصحاب العمل؟
