الأخبار والمدونة
Gapless vs Gapped Surge Arresters: Selection Considerations for MV Systems
Two structural families cover almost every arrester a medium-voltage buyer will meet. The gapless surge arrester connects its zinc oxide varistor column straight between line...
Switch Disconnectors: Isolation Duties, Limits and Specification Questions
A feeder may need to be opened during normal service and then isolated for maintenance. Those are two requirements, and a quotation for an ordinary...
محافظات هورن جاب ورود جاب: حيث تُستخدم كل تصميم
Before zinc oxide varistors existed, overhead lines were protected by air itself. A horn gap arrester stretched an arc between two diverging horns until it...
المنفذ الاختياري مقابل مفتاح الفصل: كيفية استخدام المصطلحين في الأنظمة الفولتية المتوسطة
An enquiry for a disconnector can reach three suppliers and return three different equipment descriptions: isolator, disconnect switch and switch-disconnector. The names overlap in ordinary...
المقاومات الكهربائية من المعادن والأكسيد مقابل المقاومات الكهربائية من كربيد السيليكون: مقارنة تقنية
Distribution networks that have been in service for several decades usually carry two generations of overvoltage protection side by side. New purchases are almost always...
محافظات الكشف عن ارتفاع التيار الكهربائي: أسئلة التنسيق قبل الاختيار
A transformer surge arrester is not selected from transformer voltage alone. The coordination decision begins at the protected terminals: identify the transformer insulation requirement, the...
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