المواصفات الفنية لمهمات شبكات التوزيع

26 - مقاوم التأريض المحايد EARTHING TOOLS

EDMS 26-200-1FOR COUPLING TRANSFORMERS 22/11 KV WITH RATING up to 30 MVA تحميل

إسم المواصفة
NEUTRAL GROUNDING RESISTOR (NGR) (NGR) FOR COUPLING TRANSFORMERS 22/11 KV WITH RATING up to 30 MVA
كود المواصفة
EDMS 26-200-0
تاريخ الإصدار
15/03/2022
تاريخ الإنتهاء
غير محدد
التوصيف
TECHNICAL SPECIFICATIONS FOR NEUTRAL GROUNDING RESISTOR (NGR) (NGR) FOR COUPLING TRANSFORMERS 22/11 KV WITH RATING up to 30 MVA
التفاصيل

● This specification covers the minimum requirements for the design, manufacturing, testing and supply of Neutral Grounding Resistor (NGR) with a high current resistor.
● This NGR should be designed to absorb a large amount of energy without exceeding temperature limitation defined in the latest applicable standards.
● This NGR should be a high resistance grounding which limits ground fault current to the safe levels so that all the electrical equipment in the power system are protected and at the same time letting enough current to flow to operate the protective relays that will alarm or clear the faults.
● This NGR should be connected to the secondary side of the transformer (star side) between neutral point of the transformer and earth.

تحميل المواصفة