This is the obsolete LRFD Bridge Design Specifications, 6th Edition. It is is being made available for students preparing to take the Professional Engineers exam, which currently lists this edition as a reference.
Electromagnetic compatibility (EMC) - Part 3-5: Limits - Limitation of voltage fluctuations and flicker in low-voltage power supply systems for equipment with rated current greater than 75 A (Adopted IEC/TS 61000-3-5:2009, edition 2.0, 2009-07)