differensial himoyalarning turlari
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9-ma�ruza: differensial himoyalar reja: 1. differensial himoyalarning turlari 2. yo�naltirilgan ko�ndalang differensial himoya 2.6.1. differensial himoyalarning turlari differensial himoya tez ishlaydigan va absolyut tanlashga ega bo�lgan himoya hisoblanadi. differensial himoyalar bo�ylama va ko�ndalang differensial himoyalarga bo�linadi. bo�ylama differensial himoyalar asosan transformatorlar, quvvati katta elektrodvigatellar, generator va uzun bo�lmagan liniyalarda qo�laniladi. ko�ndalang differensial himoyalar esa ikki yoki undan ortiq parallel liniyalarni himoya qilish uchun ishlatiladi. 2.6.2. bo�ylama differensial himoya. bo�ylama differensial himoya himoyalanayotgan elementning boshlanish va so�ngidagi toklarni taqqoslashga asoslangan. toklar qiymati va fazasi bo�yicha taqqoslanadi....
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