Comparison of SM and SL Surge Arresters for Energy Levels (kJ/kV)

[Virtual Presenter] Good afternoon everyone. Today I'm here to talk to you about the advantages and benefits of SM surge arresters when compared to SL surge arresters for energy levels. I'm sure by the end of this presentation you will understand why SM is the better choice for applications requiring high energy absorption. So let us get started..

[Audio] Surge arresters are essential to protecting our electrical equipment from damaging over-voltage conditions. In this presentation we will assess the performance of two frequently employed surge arresters SM and SL in terms of energy levels (kJ/kV). We will contemplate the discrepancies between the two and why SM is the superior option..

[Audio] SM Surge Arresters have an extensively higher energy handling capacity compared to SL surge arresters ranging from 3-240 kilovolts compared to 3-51 kilovolts respectively. Moreover the response time of SM surge arresters is 0.5 milliseconds while the response time of SL surge arresters is 0.8 milliseconds. SM surge arresters also have an improved lifespan of 20 years compared to the 15 years of an SL surge arrester. Therefore it is clear that SM surge arresters are the better choice..

[Audio] The data in this chart reveals that the SM Surge Arrester has an energy handling capacity of 5.5 kilojoules per kilovolt while the SL Surge Arrester shows a capacity of 3.2 kilojoules per kilovolt. Consequently the SM Surge Arrester is more suitable for higher energy levels..

[Audio] SM surge arresters can absorb up to seven kilojoules per kilovolt almost double that of SL surge arresters. Response time is also quicker at 0.5 milliseconds compared to 0.8 milliseconds and they can last up to twenty years versus fifteen years with SL arresters. These features provide better performance and reliability overall..

[Audio] SM surge arresters provide superior energy handling capabilities faster response times and a longer operational life. In applications requiring high energy absorption SM is the better choice. This presentation has hopefully been informative and helpful. Thank you for your attention..