11. The puncture strength of the insulator used in a concentric spherical electrode system with outer sphere radius r2=1

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11. The puncture strength of the insulator used in a concentric spherical electrode system with outer sphere radius r2=1

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11. The puncture strength of the insulator used in a concentric spherical electrode system with outer sphere radius r2=15 cm varies as Ed = 50 + 40 exp(-r1) kV/cm (0<=r1<= r2) with the inner sphere radius.
a) Calculate the maximum stress that can be applied to the system in the most favorable arrangement in terms of puncture resistance.
b) In order to apply U = 100 kV to the system, determine the limit of the values ​​that the radius n can take.
c) r = 2 cm, r "= 7 cm and r" = 14 cm, respectively, the system for discharge phenomena, as required by drawing curves describe. [Answers: a) Vmax = 187.6 kV; b) 2.13 cm <r <12.63 cm]
11 The Puncture Strength Of The Insulator Used In A Concentric Spherical Electrode System With Outer Sphere Radius R2 1 1
11 The Puncture Strength Of The Insulator Used In A Concentric Spherical Electrode System With Outer Sphere Radius R2 1 1 (202.47 KiB) Viewed 10 times
11. Dış küre yarıçapı r= 15 cm olan bir eşmerkezli küresel clektrot sisteminde kullanılan yalıtkanın delinme dayanımı iç küre yarıçapı ile Es = 50 + 40 exp(-11) kV/cı (0 Sri Sry) şeklinde değişmektedir. a) Delinine dayanımı bakımından en elverişli düzen durumunda sisteine uygulanabilecek maksimum gerilimi hesaplayınız. b) Sisteine U 100 kV uygulayabilmek için rı yarıçapını alabileceği değerlerin sınırını belirleyiniz. Scanned with CamScanner c) n= 2 cm, r)" = 7 cm ve ri" 14 cm değerleri için, sistemi boşalma olayları açısından, gerekli eğrileri de çizerek, açıklayınız. [Yanıtlar: a) Umax = 187,6 kV; b) 2,13 cm<r; < 12,63 cm]
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