Amendment 2 - Electrical installations of buildings - Part 5-53: Selection and erection of electrical equipment - Isolation, switching and control— 74 стр.
29.130.01 Switchgear and controlgear in general / Коммутационная аппаратура и аппаратура управления в целом
91.140.50 Electricity. Including electric energy meters in buildings, emergency electrical supplies, etc. / Системы электроснабжения. Включая аварийное электроснабжение и т.д.
