[osmana2005]

السلام عليكم ورحمة الله وبركاته اخوكم محمد عثمان محتاج احد الزملاء يجاوب علي الاسئلة :

Q.9.14 Briefly explain how partial discharges in an insulation system or equipment can be
detected and displayed.

Q.9.15 Briefly explain the methods used for calibrating the partial discharge detectors.
Q.9.16 What are partial discharges and how are they detected under power frequency
operating conditions?
Q.9.17 Discuss the method of balanced detection for locating partial discharges in electrical
equipment.
Q.9.18 Describe how a fault in a long cable can be detected and located using partial
discharge technique.
Q.9.19 What are "broad band" and "narrow band'* detectors? What is the sensitivity in
each of the above detectors