1. برقگیرها
یقورفشاوها عایق یرفناو-نیاستیدکتر آقای جنابدیبهشترا99 شهپرنیا امیرعباس
و فنی مشخصات بررسی
عملکرد اصول
Review of Standard - Surge Protection– Based on IEC60099
University of Semnan – Electrical and Computing Faculty
Surge Arresters
20. فنی مالحظات
Earth Fault Factor
considerations
Safety Margin Recommendation
Of IEC
Fast Front Protective Margin (FFPM)
FFPM (%) = ((LIWV/Upl) -1) x 100
Slow Front Protective Margin (SFPM)
SFPM (%) = ((SIWV/Ups)-1) x 100 in percent
Margin Calculation
21. فنی مالحظات
Energy Handling Capability considerations By
calculating the Area under the Current
passage Vs. gap Duration times
…. And other consideration:
- Arrester Failure Mode Capability
- Mounting Options & Other
Mechanical Parameters such
as CRITICAL ARC ZOON
…..
Class 2 rated Voltage