GB/T 24478-2023 Traction machine of electric lifts
1 Scope
This document specifies the technical requirements, test methods, inspection rules, marking, packaging, transport, and storage for traction machine of electric lifts with a rated speed of traction machine not greater than 10.0 m/s.
This document is applicable to traction machines of passenger lifts and goods lifts.
This document is not applicable to traction machines of service lifts, home lifts, and electric lifts with inclined path. However, it may serve as a reference.
This document is not applicable to traction machines of electric lifts using hydraulically operated brakes.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 191 Packaging - Pictorial marking for handling of goods
GB/T 755-2019 Rotating electrical machines - Rating and performance
GB/T 1029-2021 Test procedures for three-phase synchronous machines
GB/T 1032-2012 Test procedures for three-phase induction motors
GB/T 1971 Rotating electrical machines - Terminal markings and direction of rotation
GB/T 2900.25 Electrotechnical terminology - Rotating electrical machines
GB/T 3768 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane
GB/T 4208-2017 Degrees of protection provided by enclosure (IP code)
GB/T 7024 Terminology of lifts, escalators, passenger conveyors
GB/T 7588.1-2020 Safety rules for the construction and installation of lifts - Part 1: Passenger and goods passenger lifts
GB 8624 Classification for burning behavior of building materials and products
GB/T 14711 General requirements for safety of small and medium size rotating electrical machines
GB 30253 Minimum allowable values of energy efficiency and energy efficiency grades for permanent magnet synchronous motors
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 755-2019, GB/T 2900.25, GB/T 7024, and the following apply.
3.1
rated speed of traction machine
linear speed on the pitch circle diameter of the traction sheave, as specified by design
3.2
rated torque of traction machine
output torque of the traction machine at rated power and rated speed
3.3
starts per hour
number of starts per hour permitted for the traction machine
3.4
short-circuit braking torque of permanent magnet synchronous motor
braking torque generated by the rotation of the motor after short-circuiting the stator winding
Note: This braking torque is related to the rotational speed.
3.5
release time of brake
time interval from power-off of the brake to the braking torque reaching its rated value
Note: This time includes the delay caused by devices (if any) integral to the brake, such as rectifier bridges, diodes, or capacitors.
3.6
maximum release voltage of brake electromagnet
critical voltage at which the electromagnetic force of the brake electromagnet can no longer maintain the attracted state
3.7
allowed radial load
maximum radial load allowed on the traction sheave
4 Technical requirements
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Technical requirements
5 Test methods
6 Inspection rules
7 Marking, packaging, transport and storage
