The limitations of these materials are why 285.3 doesn't permit the following uses: Circuits exceeding 600V (you must use a surge arrester instead). Ungrounded electrical systems. Where the rating of ...

280 [Surge Arrestors] and Art. 285 [Transient Voltage Surge Suppressors ... (3) If the voltage rating of the SPD is less than the maximum continuous phase-to-ground voltage available at the point of ...

During the fall of 2022, KEMA Labs in Chalfont, Pennsylvania, finished improvements to its test platform for surge arresters. The platform now meets the requirements outlined in IEEE C62.11, IEC 60099 ...