1600KV Basic Impulse Level (BIL) Testing Tower

 This is a video showing three operations of Surplec HV's BIL testing tower. The BIL is a high-voltage testing device used to create artificial lightning, in order to test the resistance of the equipment to a bolt. Most high-voltage equipment are made to whitstand an enormous amount of voltage for a short period of time, about 10 seconds. This BIL tower has a power of 1,600,000 Volts, so it is able to test equipments that go up to 345KV. Watch carefully, it strikes three times in the 11 minutes. If you blink, you'll miss it.
Watch the white tube with the windows to see the lightning at 4:32, 6:21 & 11:20.