حددوا ال

SF أولاً

اذا كان 1.15 او يزيد فتكون ال OL

1.25 x FLA

اما اذا كان اصغر من 1.15

فتكون ال OL

1.15 x FLA

نص القاعدة كما ورد في المعيار الكندي

28-306 Rating or trip selection of overload devices (see Appendix B)

1) Overload devices responsive to motor current, if of the fixed type, shall be selected or rated or, if

of the adjustable type, shall be set to trip at not more than the following:

a) 125% of the full load current rating of a motor having a marked service factor of 1.15 or

greater; or

b) 115% of the full load current rating of a motor that does not have a marked service factor or

where the marked service factor is less than 1.15