EN 50152-3-1:2017/prA1

Railway applications - Fixed installations - Particular requirements for a.c. switchgear - Part 3-1: Measurement, control and protection devices for specific use in a.c. traction systems - Devices EN 50152-3-1:2017/prA1

Scope

Scope of standard
This European Standard is applicable to new low voltage devices for measurement, control and protection which are:
— for indoor or outdoor fixed installations in traction systems, and
— operated in conjunction with high voltage equipment with an a.c. line voltage and frequency as specified in EN 50163.
This European Standard also applies to measurement, control and protective devices other than low voltage devices and not covered by a specific railway product standard as far as reasonably possible. Requirements of this document prevail.
Scope of amendment
Implementation of 2 technical changes:
— Modification of subclause 5.4, second item in list of protection functions.
— Aligning the value for short-circuit current of 50 Hz traction systems given in Annex A subclause A.2.1 ‘Line testing – General’ with EN 50388-1:2022 Table 7