IEC 61229 pdf download.Rigid protective covers for live working on a.c. installations 1 Scope International Standard IEC 61229 is applicable to rigid insulating covers for live working on a.c. installations, including those described in IEC 60743. The barriers, having dielectric withstand which depends on the positioning clearance, are excluded from this standard. 1.1 Classes Six classes of covers, differing in...