Amendment 1 - Low-voltage switchgear and controlgear - Part 4-1: Contactors and motor-starters - Electromechanical contactors and motor-starters— 45 стр.
BS EN 81-20. Safety rules for the construction and installation of lifts. Lifts for the transport of persons and goods. Part 20. Passenger and goods passenger lifts— 185 стр.