Utility overvoltage protection with surge arresters | Eaton PSEC

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A surge arrester is a protective device for limiting voltage on equipment by discharging or bypassing overvoltage. In this video, Brian Bertini, Utility Application Engineer, explains how overvoltage protection is essential to address power quality issues and maintaining the reliability of utility infrastructure. Brian walks us through several topics including: Overvoltage protection explanation - the impact of overvoltage on utility power systems - how surge arresters guard and prevent infrastructure damage Sources of overvoltage - lightning, ungrounded transformers, ferroresonance, and line-to-ground faults. - the effects of lightning on power lines Types of surge arresters and design - secondary, distribution, intermediate, and substation - metal oxide varistors (MOVs) function within surge arresters Selecting a surge arrester - details utility engineers must consider such as maximum continuous operating voltage (MCOV), basic installation level (BIL), temporary overvoltage (TOV), lead length, and geographical location. Arrester Failure and Isolation - the role of isolators in disconnecting failed arresters from the system - without the isolator, it would become a permanent ground fault Underground distribution protection - underground cables are susceptible to propagating surges - the phenomenon of voltage doubling explained Learn more about the fundamentals of surge arresters, including secondary, distribution, intermediate, and substation: https://www.eaton.com/us/en-us/products/medium-voltage-power-distribution-control-systems/lightning-arresters/surge-arresters--fundamentals-of-surge-arresters.html Learn about the types of surge arresters Eaton offers: https://www.eaton.com/us/en-us/products/medium-voltage-power-distribution-control-systems/lightning-arresters.html Thank you for watching one of our many educational videos on the topic of power systems. Schedule a visit to one of Eaton's Power Systems Experience Centers in either Pittsburgh or Houston to learn more! To learn more about Eaton products and our Power Systems Experience Centers: http://eaton.com/experience To view more educational videos from Eaton's Power Systems Experience Centers: http://videos.eaton.com/experience Chapters 00:00 00:12 Title 01:01 Sources of overvoltage 01:47 Types of arresters and how they work 03:42 Arrester selection 06:01 Eaton Evolution arrester benefit 07:24 Underground distribution protection #lightningprotection #powersystem #eatonexperience #engineering #experiencecenter #overvoltage #utilitypowersystem #electricalengineering #electricaltrainingvideos #powersystemdesign #powersystemprotection