Subsequent Stroke Attachment Test

This test constitutes the second part of the complete high-voltage test procedure for verifying lightning protection systems. It is therefore usually performed in conjunction with the Initial Leader Attachment Test.

The purpose of the test is to identify points close to the dedicated lightning receptors where the blade could potentially be punctured when subjected to a lightning strike. During the test, the equipment simulates the powerful electric voltages to the blade surface that is caused by the very fast subsequent stroke.

The test is conducted in accordance with IEC 61400-24 Annex D.2.2 and can be performed on test coupons with all relevant design components. Alternatively, the test can be performed on sections of actual blades, or on full blade samples.

Read about the Initial Leader Attachment Test

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