ISO/TC 178/WG 10 - Energy efficiency

ISO 25745-2:2015 specifies a method to estimate energy consumption based on measured values, calculation, or simulation, on an annual basis for traction, hydraulic and positive drive lifts on a single unit basis, and an energy classification system for new, existing, and modernized traction, hydraulic, and positive drive lifts on a single unit basis. It applies to passenger and goods passenger lifts with rated speeds greater than 0,15 m/s and only considers the energy performance during the operational portion of the life cycle of the lifts. For other types of lifts (e.g. service lifts, lifting platforms, etc.), it can be taken as a reference. It does not cover energy aspects, which affect the measurements, calculations, and simulations, such as the following: hoistway lighting; heating and cooling equipment in the lift car; machine room lighting; machine room heating, ventilation, and air conditioning; non-lift display systems, CCTV security cameras, etc.; non-lift monitoring systems (e.g. building management systems, etc.); effect of lift group dispatching on energy consumption; environmental conditions; consumption through the power sockets; lifts whose travel includes an express zone (an express zone is unlikely to affect the average car load but can significantly affect the average travel distance).

ISO 25745-3:2015 specifies generic tools for estimating energy consumption of escalators and moving walks, and a consistent method for energy performance classification of existing, modernized, or new escalators and moving walks. It considers the energy performance during the operational portion of the life cycle of escalators and moving walks. It does not cover energy consumption and classification of the ancillary equipment, such as the following: a) lighting with the exception of comb plate lighting, step gap lighting, and traffic light (comb plate lighting, step gap lighting, and traffic light are considered essential for the operation of the equipment and are therefore not defined as ancillary equipment); b) cooling and heating and machine room ventilation; c) alarm devices and emergency battery supplies equipment, etc.; d) environmental conditions; e) consumption through the power sockets. There can be other electrical loads not associated with the escalator or moving walk, and not included. ISO 25745-3:2015 considers all escalators and inclined moving walks up to a rise of 8 m and horizontal moving walks with a length up to 60 m (this represents about 85 % of worldwide installed units).

ISO 25745-1:2012 specifies: a) methods of measuring actual energy consumption of lifts, escalators and moving walks on a single unit basis; b) methods of carrying out periodic energy verification checks on lifts, escalators and moving walks in operation. ISO 25745-1:2012 only considers the energy performance during the operational portion of the life cycle of the lifts, escalators or moving walks.