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Monika Lionaite
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How high should we aim? Sparkovers (flashovers) which occur almost naturally in building wiring systems protect most equipment locations for surges above 6kV. So 6kV is the upper limit we should be concerned about. Note that poor or mediocre wiring insulation materials ironically help protect equipment better than excellent and expensive insulator materials. There is increasing talk about “6kV surge protection”. We now realize why 6kV is being picked. However, we should keep in mind that so far such requirements are voluntary. But even if they do become mandatory, note that there are already designated “levels” of surge withstand capability: 2.5kV, 4kV, and 6kV, similar to CISPR 24. So it is probable that much like with CISPR 24/EN55024 we may only need to comply with a level lesser than max.
Surge Protect, a critical issue you could not fail to know while implementing...
Surge Protect, a critical issue you could not fail to know while implementing...
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How high should we aim? Sparkovers (flashovers) which occur almost naturally in building wiring systems protect most equipment locations for surges above 6kV. So 6kV is the upper limit we should be concerned about. Note that poor or mediocre wiring insulation materials ironically help protect equipment better than excellent and expensive insulator materials. There is increasing talk about “6kV surge protection”. We now realize why 6kV is being picked. However, we should keep in mind that so far such requirements are voluntary. But even if they do become mandatory, note that there are already designated “levels” of surge withstand capability: 2.5kV, 4kV, and 6kV, similar to CISPR 24. So it is probable that much like with CISPR 24/EN55024 we may only need to comply with a level lesser than max.
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