Its main features include:
Understanding IEC 60099-5: Comprehensive Guide and Application for Surge Arresters
+-------------------------------------------------------+ | 1. Determine Continuous Operating Voltage (Uc) | | Based on maximum continuous system voltage (Us) | +---------------------------+---------------------------+ | v +-------------------------------------------------------+ | 2. Calculate Temporary Overvoltage (TOV) Limits | | Account for system faults and duration curve | +---------------------------+---------------------------+ | v +-------------------------------------------------------+ | 3. Select Rated Voltage (Ur) | | Must withstand TOV envelope without failing | +---------------------------+---------------------------+ | v +-------------------------------------------------------+ | 4. Evaluate Energy & Charge Stresses ($Q_th$ / $Q_rs$) | | Compute lightning and switching surge impacts | +---------------------------+---------------------------+ | v +-------------------------------------------------------+ | 5. Finalize Margin of Protection | | Ensure residual voltage protects asset insulation | +-------------------------------------------------------+ Step 1: Continuous Operating Voltage ( Uccap U sub c ) Selection Uccap U sub c
The complete IEC 60099-5:2018 is available on the IEC Webstore .