, IEC 60079-14: 2013 Explosive atmospheres ? Part 14: Electrical installations design, selection and erection, p.2016

, 2014: Explosive atmospheres ? Explosive atmospheres ? Part 26: Equipment with Equipment Protection Level (EPL) Ga, pp.60079-60105

, Adjustable speed electrical power drive systems -Part 5-2: safety requirements - Functional, 2015.

, IEC 60079-14-F1 Explosive atmospheres ? Part 14: Electrical installations design, selection and erection (interpretation sheet, 2017.