1. IEC 60364-4-41, Low-Voltage Electrical Installations -Part 4-42: Protection for Safety - Protection against Thermal Effects,2005
2. IEC 60364-6 “Low Voltage Electrical Installations - Part 6: Verification,2016
3. Correlation analysis about loop impedance and load condition;Jung;The Korean Institute of Electrical Engineers,2012
4. Electrical Safety Engineering;Kim,2021
5. Technical Guidelines on Earthing System Design Method,2019