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Due to the integrity of Vacuum Bottles compared to ACB. Plus the VCB are way less maintenance demanding compared to ACB which demand more frequent maintenance on them. Number of operations which VCB can withstand are much more. No arc chutes issue and many more advantages. The contacts are enclosed in the bottles. So no dirt or any other issue.
Actually the thing is vacuum has high arc queching property compare than air .becoz in VCB ,the die electric strength is equal to 8 times of air . That y always vaccum used as in HT breaker and air used as in LT in these breakers employ with high resistance intruption principle.
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هل تحتاج لمساعدة في كتابة سيرة ذاتية تحتوي على الكلمات الدلالية التي يبحث عنها أصحاب العمل؟