SS 550:2020 + A1: 2022

Code of practice for installation, operation and maintenance of electric passenger and goods lifts


Specifies the safety rules for permanently installed new passenger or goods lifts, with traction or hydraulic drive, serving defined landing levels, having a car designed for the transportation of persons or goods or persons and goods, suspended by ropes or jacks and moving between guide rails inclined not more than 15° to the vertical.

Does not cover:
a) lifts with:
1) drive systems other than those stated in 1.1;
2) rated speed = 0,15 m/s;
b) hydraulic lifts:
1) with a rated speed exceeding 1 m/s;
2) where the setting of the pressure relief valve ( exceeds 50 MPa;
c) (reserved for future use);
d) lifting appliances, such as paternosters, mine lifts, theatrical lifts, appliances with automatic caging,
skips, lifts and hoists for building and public works sites, ships' hoists, platforms for exploration or
drilling at sea, construction and maintenance appliances or lifts in wind turbines;
e) important modifications (see to a lift installed before this standard is brought into
f) safety during operations of transport, erection, repairs, and dismantling of lifts.


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Status Current
Edition 2020 + A1: 2022
No. of Pages 225
ICS Classification 91.140.90 Lifts. Escalators
Committee Electrical and Electronic Standards Committee
Available for Purchase For sale in Singapore only
Adoption EN 81-20 : 2014 MOD