EN 15625:2021

SLOVENSKI STANDARD
01-april-2021
Nadomešča:
SIST EN 15625:2009+A1:2011
Železniške naprave - Zavore - Naprave za samodejno zaznavanje spremembe
obtežbe
Railway applications - Braking - Automatic variable load sensing devices
Bahnanwendungen - Bremse - Automatisch kontinuierlich wirkende
Lasterfassungseinrichtungen
Applications ferroviaires - Freinage - Dispositifs de pesée variable automatiques
Ta slovenski standard je istoveten z: EN 15625:2021
ICS:
45.040 Materiali in deli za železniško Materials and components
tehniko for railway engineering
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 15625
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2021
EUROPÄISCHE NORM
ICS 45.040 Supersedes EN 15625:2008+A1:2010
English Version
Railway applications - Braking - Automatic variable load
sensing devices
Applications ferroviaires - Freinage - Dispositifs de Bahnanwendungen - Bremse - Automatisch
pesée variable automatiques kontinuierlich wirkende Lasterfassungseinrichtungen
This European Standard was approved by CEN on 20 December 2020.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15625:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Symbols and abbreviations . 7
5 Design and manufacture . 7
5.1 General . 7
5.2 Functional requirements. 7
5.2.1 Operating requirements . 7
5.2.2 Characteristics of weighing valves . 7
5.2.3 Mechanical requirements . 8
5.2.4 Tightness . 8
5.3 Fire behaviour . 8
5.4 Shock and vibration . 9
5.5 Service life . 9
5.6 Compressed air quality . 9
5.7 Environmental conditions . 9
5.7.1 General . 9
5.7.2 Ambient temperature . 9
5.7.3 Altitude . 9
5.7.4 Humidity . 10
5.7.5 Rain . 10
5.7.6 Snow, ice and hail . 10
5.7.7 Solar radiation . 10
5.7.8 Pollution . 10
5.8 External appearance . 11
5.9 Design requirements regarding pressure stress . 11
5.10 Pneumatic connections . 11
6 Type tests . 11
6.1 General . 11
6.2 Individual automatic variable load sensing device type tests . 12
6.2.1 Test bench for individual automatic variable load sensing devices type tests . 12
6.2.2 Sampling for type test . 13
6.2.3 Test requirements . 13
6.2.4 Check of physical and geometrical characteristics . 14
6.2.5 Tightness . 14
6.2.6 Characteristic, hysteresis . 15
6.2.7 Operation at extreme temperature . 16
6.2.8 Shock and vibration tests . 18
7 In-service assessment. 19
8 Designation. 19
9 Identification and marking . 19
Annex A (informative) Assessment of an automatic variable load sensing device when
fitted to a vehicle . 21
A.1 General . 21
A.2 Design acceptance testing set up . 21
A.3 Running tests . 21
A.3.1 General . 21
A.3.2 Pneumatic automatic variable load sensing device – Air consumption . 21
A.3.2.1 Procedure . 21
A.3.2.2 Pass/fail criteria . 21
A.3.3 Automatic variable load sensing device – Output signal variation . 22
A.3.3.1 Procedure . 22
A.3.3.2 Pass/fail criteria . 22
Annex B (normative) In-service assessment . 23
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2016/797/EU aimed to be covered. 24
Bibliography . 26

European foreword
This document (EN 15625:2021) has been prepared by Technical Committee CEN/TC 256 “Railway
applications”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by August 2021, and conflicting national standards shall be
withdrawn at the latest by August 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 15625:2008+A1:2010.
The main changes compared to EN 15625:2008+A1:2010 are:
a) normative references have been updated;
b) terms and definitions have been revised;
c) requirements on design and manufacture have been revised;
d) requirements on materials have been removed;
e) requirements on type tests have been revised;
f) requirements on routine test and inspection have been removed;
g) requirements on type validation have been removed;
h) requirements on in-service assessment have been added;
i) requirements on documentation have been removed;
j) requirements on designation, identification and marking have been revised;
k) Annex ZA has been updated.
This document has been prepared under a standardization request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of
EU Directive 2016/797/EU.
For relationship with EU Directive 2016/797/EU, see informative Annex ZA, which is an integral part of
this document.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
1 Scope
This document applies to automatic variable load sensing devices designed to continuously sense the
load of a railway vehicle and provide a pneumatic output signal that can be used by a relay valve for the
automatic variation of the air pressure used for brake applications, thereby adjusting the brake force
accordingly to achieve the required brake performance.
This document specifies the requirements for the design, testing and quality assurance of automatic
variable load sensing devices.
The requirements of this document are
...