Tantalum and its oxides. Spectral method for determination of aluminum, vanadium, ferrum, calcium, silicon, magnesium, manganese, copper, nickel, niobium, tin, titanium, chromium and zirconium
Electromagnetic compatibility of technical equipment. Limitation of harmonic currents produced by equipment with input current greater than 16A and not greater than 75 A per phase connected to public low-voltage supply systems. Limits and test methods