Amendment 1 - Factory-built assemblies of low-voltage switchgear and controlgear - Part 2: Particular requirements for busbar trunking systems (busways)— 7 стр.
Electricity metering equipment (a.c.) - Particular requirements - Part 24: Static meters for reactive energy at fundamental frequency (classes 0,5 S, 1S and 1)— 54 стр.
Electrical installations of buildings. Part 5: Selection and erection of electrical equipment. Chapter 54: Earthing arrangements and protective conductors— 30 стр.
