Short-duration power-frequency withstand voltage tests
The switchgear and controlgear shall be considered to have passed the test if no
disruptive discharge occurs.
If during a wet test a disruptive discharge (as defined by 4.1 of IEC 60060-1) on external
self-restoring insulation occurs, this test shall be repeated in the same test condition and
the switchgear and controlgear shall be considered to have passed this test successfully if
no further disruptive discharge occurs