ISO 25745-3:2015 pdf free
ISO 25745-3:2015 pdf free.Energy performance of lifts, escalators and moving walks
The measured or calculated power consumption is used for determining the energy consumption.Energy consumption is power consumption multiplied with a defined time period.
Calculation methods to estimate energy consumption of escalators and moving walks are given in Annex A. Formulas are provided for a situation where a more complete or appropriate method is not available. Energy consumption estimated by the formulae is based on average factors. Energy calculations using these methods are only estimations and can differ from real energy consumption,which is mainly affected by traffic topology, technology, and load factors.
NOTE There can be a deviation between a calculated value and a measured value in a specific installation.This can be due to assumptions made. Where the difference is greater than 20 %, an investigation should be carried out.
This section specifies a methodology for the energy performance classification of an escalator or moving walk.
The energy performance classification is obtained by executing the following steps:
a) Normalizing the calculated or measured power consumption of a single unit:
一calculation of the reference power consumption (5.2);
一calculation or measurement of the power consumption of the specified unit (5.3);
一calculation of the energy performance ratio (5.4).
b) Normalizing of operation mode power consumption of a single unit:
一calculation of the reference operation mode performance ratio (5.5).
c) Consideration of ancillary power performance:
一consideration according to 5.6 item c).
The classification methodology applies to in-service escalators and moving walks whether the values are measured on an installation or provided by the manufacturer. It can also be used to re-classify an installation after modernisation.
To obtain the reference power consumption, the calculation shall be executed with the reference values according to Table 2. For determined configurations, the application of the formulae above and the reference values below results in values given in Table A.2.ISO 25745-3 pdf free download.
