Extremes: IEC 60909 Short-Circuit Currents, IEC 60255 Protection Relays and IEC 62305 Lightning Protection

Deep End Era. Engineering with Sankalp · Oct 29, 2026 · 1h 5m

A rare winter thunderstorm puts lightning onto the flare stack at Al Sahil and destroys instruments a hundred metres away; three weeks later a cable fault on one feeder trips half the plant. Khalid Mansoori, Hana Qureshi, Rashid Al Amri and Leila Darwish discover that the plant has grown, but its short-circuit and protection studies have not.

Chapters

00:00:00 A storm in January

00:03:24 Three weeks later

00:06:02 The largest current

00:13:26 The plant that grew

00:15:34 The relays

00:18:47 Inverse time

00:20:46 Discrimination

00:23:21 What went wrong

00:26:09 Faster than overcurrent

00:29:58…