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What is let-through voltage?

April 26, 2017let-through voltage

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What is let-through voltage?

4 Answers

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Let-through voltage is the maximum voltage measured across a surge protector when suppression takes place. For example, a surge protector will limit a 20,000V surge to 650V. So instead of 20,000V reaching and damaging your equipment, it would only be exposed a safe 650V for the duration of the surge. The 650V is the let-through voltage. Also known as the remnant voltage.

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Transient suppression voltage or let-through voltage is defined in UL 1449 as “The maximum peak voltage occurring within 100 microseconds after the application of the test wave.” What we are really talking about is the maximum amplitude or height of the voltage after the TVSS has done its job.

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10 Posted

Transient suppression voltage or let-through voltage is defined in UL 1449 as “The maximum peak voltage occurring within 100 microseconds after the application of the test wave.” What we are really talking about is the maximum amplitude or height of the voltage after the SPD has done its job.

0

10 Posted

Transient suppression voltage or let-through voltage is defined in UL 1449 as “The maximum peak voltage occurring within 100 microseconds after the application of the test wave.” What we are really talking about is the maximum amplitude or height of the voltage after the SPD has done its job.

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