EN 15328:2020/FprA1

SLOVENSKI STANDARD
SIST EN 15328:2020/oprA1:2022
01-februar-2022
Železniške naprave - Zavore - Zavorne obloge - Dopolnilo A1
Railway applications - Braking - Brake pads
Bahnanwendungen - Bremsen - Bremsbeläge
Applications ferroviaires - Freinage - Garniture de frein
Ta slovenski standard je istoveten z: EN 15328:2020/prA1
ICS:
45.040 Materiali in deli za železniško Materials and components
tehniko for railway engineering
SIST EN 15328:2020/oprA1:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

SIST EN 15328:2020/oprA1:2022
SIST EN 15328:2020/oprA1:2022
DRAFT
EUROPEAN STANDARD
EN 15328:2020
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
December 2021
ICS 45.040
English Version
Railway applications - Braking - Brake pads
Applications ferroviaires - Freinage - Garniture de frein Bahnanwendungen - Bremsen - Bremsbeläge
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 256.

This draft amendment A1, if approved, will modify the European Standard EN 15328:2020. If this draft becomes an amendment,
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant national standard without any alteration.

This draft amendment was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

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 15328:2020/prA1:2021 E
worldwide for CEN national Members.

SIST EN 15328:2020/oprA1:2022
EN 15328:2020/prA1:2021 (E)
Contents
European foreword . 3
1 Modifications to the Introduction . 4
2 Modifications to 3 “Terms and definitions”. 4
3 Modification to 5.6.6 “Coefficient of friction under wet conditions” . 4
4 Modifications to 5.14 “Interchangeability of brake pads” . 4
5 Modification to Table B.1 . 5
6 Modifications to Table B.2 . 5
7 Modifications to Table B.3 . 5
8 Modification to Table B.4 . 6
9 Modifications to Table B.5 . 6
10 Modifications to Table B.6 . 6
11 Modifications to Table B.7 . 7
12 Modifications to Table B.8 . 8
13 Modifications to Table B.9 . 9
14 Modifications to Table B.10. 9
15 Modifications to Table B.11. 10
16 Modification to Table C.1 . 11
17 Modifications to Table E.1 . 11
18 Modification to E.2.2 “Brake steps” . 12
19 Modifications to E.2.4 “Continuous brake applications” . 12
20 Modifications to Table E.5 . 12
21 Modifications to E.3.5 “Power for continuous brake applications” . 13
22 Modifications to Annex ZA . 13
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive (EU) 2016/797 aimed to be covered . 14

SIST EN 15328:2020/oprA1:2022
EN 15328:2020/prA1:2021 (E)
European foreword
This document (EN 15328:2020/prA1:2021) has been prepared by Technical Committee CEN/TC 256
“Railway applications”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
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(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral part
of this document.
SIST EN 15328:2020/oprA1:2022
EN 15328:2020/prA1:2021 (E)
1 Modifications to the Introduction
In the second paragraph delete the second sentence and change it to:
“The generic test program can also be used with different program parameter figures for specific project
applications.”
Delete the last paragraph.
2 Modifications to 3 “Terms and definitions”
Add a new term 3.7:
“3.7
continuous brake application 1
brake application which represents the Gotthard-Ramp with friction brakes only”
Add a new term 3.8:
“3.8
continuous brake application 2
brake application which represents the reference case of TSI Loc&Pas to perform a continuous brake
application in load condition ‘maximum braking load’ at speed equal to 90 % of the maximum operating
speed on maximum descending gradient of 35 ‰ during 6 km with friction brakes and a train resistance
(25 % of the total brake force)”
3 Modification to 5.6.6 “Coefficient of friction under wet conditions”
In the first sentence add an “s” to “test program”:
“In wet conditions, with the highest nominal application force of test programs S2.1 and T2 the mean
coefficient of friction shall not vary – all other things being equal – by more than ± 15 % compared with
the average of mean coefficients of friction obtained during braking under dry conditions.”
4 Modifications to 5.14 “Interchangeability of brake pads”
Replace the current subclause by the following:
“The ability to obtain interchangeability of brake pads for the application in the same train can be
evaluated via dynamometer testing. The tests shall be conducted at the same dynamometer either with
one of the predefined test programs contained within this standard or with a test program adapted from
the appropriate generic test program (Annex E) to the parameters of the train at hand. The brake disc to
be used for the tests shall be of the same type that is used on the train for which brake pad
interchangeability is sought.
Both brake pads shall be compliant with this standard on the basis of testing carried out defined above.
For existing fleets, one of the two brake pads shall already be used in the train and in the evaluation of
the train’s brake performance in the homologation process.
The difference in the values of the mean coefficients of friction of both brake pads under dry conditions
at train speeds critical for brake performance evaluation shall be compliant with the criteria defined in a
technical specification (e.g. do not exceed 10 % upwards or 5 % downwards of the reference value of the
coefficient of friction).
At other speeds, the brake performance of both brake pads shall be greater or equal to the brake
performance evaluated at the critical speed.”
SIST EN 15328:2020/oprA1:2022
EN 15328:2020/prA1:2021 (E)
5 Modification to Table B.1
For “No. brake” 112 change the last column from
“Continuous brake application with 45 kW for 34 min”
to
“Continuous brake application with 46 kW for 34 min”
6 Modifications to Table B.2
For “No. brake” 137 change the fourth column from
“70”
to
“80”
and the last column from
“Continuous brake application with 57 kW for 12 min”
to
“Continuous brake application 1 with 37 kW for 30 min”
For “No. brake” 138 change the fourth column from
“70”
to
“80”
7 Modifications to Table B.3
For “No. brake” 137 change the fourth column from
“70”
to
“80”
and the last column from
“Continuous brake application with 72 kW for 12 min”
to
“Continuous brake application 1 with 46 kW for 30 min”
For “No. brake” 138 change the fourth column from
“70”
to
“80”
SIST EN 15328:2020/oprA1:2022
EN 15328:2020/prA1:2021 (E)
8 Modification to Table B.4
For “No. of brake app.” 97 change the last column from
“Continuous brake application with a dissipated load of 55 kW over 10 min”
to
“Continuous brake application 1 with a dissipated load of 31 kW over 30 min”
9 Modifications to Table B.5
For “No. brake” 63 change the third column from
“70”
to
“80”
and the last column from
“Continuous brake application with 45 kW for 34 min”
to
“Continuous brake application 1 with 52 kW for 30 min”
For “No. brake” 64 change the third column from
“70”
to
“80”
10 Modifications to Table B.6
For “No. brake” 101 change the third column from
“70”
to
“80”
and the last column from
“Continuous brake application with 47 kW for 12 min”
to
“Continuous brake application 1 with 30 kW for 30 min”
For “No. brake” 102 change the third column from
“70”
to
“80”
SIST EN 15328:2020/oprA1:2022
EN 15328:2020/prA1:2021 (E)
Replace the last six rows by the following eight rows:
“
Dry brake application
1 121 160 37 50–60 6,5
Continuous brake application 2 with
— 122 225 — 50–60 —
105 kW for 96 s
Brake application to a stand dry
without cooling interval
3 123 225 25/37 — 6,5
W.
Regeneration of brake pads
4 124–133 120 24 50–60 6,5
Drag braking, 20 kW, until
— 134 70 — — —
T > 120 °C
Parking brake, hot
— 135–139 0 57 100 —
Parking brake, cold
— 140–144 0 57 40 —
W weighing. A minimum initial temperature (θ ) of 20 °C is permissible after weighing.
. 0
“
11 Modifications to Table B.7
For “No. brake” 109 change the third column from
“70”
to
“80”
and the last column from
“Continuous brake application with 72 kW for 12 min”
to
“Continuous brake application 1 with 46 kW for 30 min”
For “No. brake” 110 change the third column from
“70”
to
“80”
SIST EN 15328:2020/oprA1:2022
EN 15328:2020/prA1:2021 (E)
Replace the last five rows by the following eight rows:
“
Dry brake application
50–
1 129 160 55 10
— 130 225 — — — Continuous brake application 2 with
162 kW for 96 s
3 131 225 37/55 — 10 Brake application to a stand dry
without cooling interval
W.
4 132-141 120 36 50-60 10 Regeneration of brake pads
— 142 70 — — — Drag braking, 20 kW, until T > 120 °C
Parking brake, hot
— 143–147 0 57 100 —
Parking brake, cold
148-152 0 57 40 —
W weighing. A minimum initial temperature (θ ) of 20 °C is permissible after weighing.
. 0
“
12 Modifications to Table B.8
For “No. brake” 71 change the last column from:
“Continuous brake application with 40 kW for 20 min”
to
“Continuous brake application 1 with 37 kW for 30 min”
For “No. brake” 105 change the third column from
“80”
to
“270”
and the last column from
“Continuous brake application 58 kW for 20 min”
to
“Continuous brake application 2 with 156 kW for 80 s”
For No. brake” 106 change the third column from
“80”
to
“270”
SIST EN 15328:2020/oprA1:2022
EN 15328:2020/prA1:2021 (E)
and the fourth column from
“49”
to
a
“F /F
B2 B1
33/49”
13 Modifications to Table B.9
For “No. brake” 71 change the last column from
“Continuous brake application 25 kW for 20 min”
to
“Continuous brake application 1 with 23 kW for 30 min”
For “No. brake” 111 change the third column from
“80”
to
“270”
and the last column from
“Continuous brake application 36 kW for 20 min”
to
“Continuous brake application 2 with 96 kW for 80 s”
For “No. brake” 112 change the third column from
“80”
to
“270”
and the fourth column from
“25”
to
a
“F /F
B2 B1
19/25”
14 Modifications to Table B.10
For “No. brake” 71 change the last column from
“Continuous brake application 35 kW for 20 min”
to
“Continuous brake application 1 with 28 kW for 30 min”
SIST EN 15328:2020/oprA1:2022
EN 15328:2020/prA1:2021 (E)
For “No. brake” 117 change the third column from
“80”
to
...