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BS EN 15328:2020+A1:2024 Railway applications. Braking. Brake pads, 2024
- undefined
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Symbols and abbreviations
- 5 Characteristics and test method of the brake pads [Go to Page]
- 5.1 Classification of brake pads
- 5.2 Coefficient of friction
- 5.3 Environmental impact, health and safety
- 5.4 Usage requirements
- 5.5 Frictional requirements for brake pads [Go to Page]
- 5.5.1 General
- 5.5.2 Priority levels of brake applications
- 5.5.3 Criteria for the nominal line
- 5.5.4 Criteria for the mean coefficient of friction
- 5.5.5 Criteria for continuous brake applications
- 5.5.6 Criteria for bedding brake applications
- 5.6 Requirements and optional test programs for brake pads for coaches [Go to Page]
- 5.6.1 General
- 5.6.2 Tolerance ranges
- 5.6.3 Criteria for continuous brake applications
- 5.6.4 Criteria for bedding brake applications
- 5.6.5 Coefficient of friction under high thermal load
- 5.6.6 Coefficient of friction under wet conditions
- 5.7 Geometrical features of the brake pads [Go to Page]
- 5.7.1 Brake pad shape
- 5.7.2 Brake pad wear
- 5.7.3 Brake pad fixing
- 5.8 Mechanical, physical and chemical characteristics
- 5.9 Thermal and mechanical requirements
- 5.10 In-service assessment
- 5.11 Marking of brake pads
- 5.12 Dynamometer tests
- 5.13 Conditions for classification tests [Go to Page]
- 5.13.1 Classification scheme for locomotives, MUs, high-speed trains, freight wagon and coaches
- 5.13.2 Optional classification scheme for coaches
- 5.13.3 Validity of assessment
- 5.13.4 Scope of classification
- 5.14 Interchangeability of brake pads
- Annex A (normative)Generic conditions for the execution of test programs [Go to Page]
- A.1 General
- A.2 Response time
- A.3 Weighing
- A.4 Interruption of test sequence
- A.5 Temperatures
- A.6 Brake applications under wet conditions
- A.7 Conditioning of brake discs [Go to Page]
- A.7.1 General
- A.7.2 Conditioning program
- A.7.3 Roughness measurement
- A.8 Bedding-in of brake pads
- A.9 Methods of temperature measurements
- A.10 Mean friction radius
- A.11 Rotation and ventilation conditions
- Annex B (normative)Test programs for classes A1 to G1 [Go to Page]
- B.1 Test program: brake pads of class A1
- B.2 Test program: brake pads of classes B1 and C1
- B.3 Test Program: brake pads of classes B2 and C2
- B.4 Test program: brake pads of class C0
- B.5 Test program: brake pads of class C3
- B.6 Test program: brake pads of class D1
- B.7 Test program: brake pads of class D2
- B.8 Test program: brake pads of class E1
- B.9 Test program: brake pads of class F1
- B.10 Test program: brake pads of classes F2 and G1
- B.11 Test program: brake pads of class F3
- B.12 Assessment of static friction coefficient
- Annex C (normative)Test programs for coaches [Go to Page]
- C.1 Test program S1.1 (vmax = 200 km/h – organic brake pads)
- C.2 Test program S2.1 (wet test)
- C.3 Instantaneous coefficient of friction for test program S1.1, S2.1, T1 and T2
- C.4 Mean coefficient of friction for test programs S1.1, S2.1, T1 and T2
- C.5 Test program T1 (vmax = 200 km/h – sintered brake pads)
- C.6 Test program T2 wet test (sintered brake pads)
- Annex D (normative)Documentation of brake tests
- Annex E (normative)Generic test programs for locomotives, MUs and high speed trains [Go to Page]
- E.1 Use of the generic test programs
- E.2 Locomotives and MUs [Go to Page]
- E.2.1 Test parameters
- E.2.2 Brake steps
- E.2.3 Masses
- E.2.4 Continuous brake applications
- E.3 High speed trains [Go to Page]
- E.3.1 Test parameters
- E.3.2 Brake steps
- E.3.3 Masses
- E.3.4 Brake forces for high-speed brake applications
- E.3.5 Power for continuous brake applications
- Annex F (normative)Brake pads shapes and envelopes [Go to Page]
- F.1 General
- F.2 Preferred space envelope for SBP 200 cm2
- F.3 Preferred space envelope for SBP 175 cm2
- F.4 Space envelope for SBP 200 cm2
- F.5 Maximum Space envelope for SBP 175 cm2
- Annex G (normative)Drawings for dove tails
- Annex H (informative)In-service test [Go to Page]
- H.1 Test requirements
- H.2 Mechanical requirements
- H.3 Thermal requirements
- Annex I (informative)Example of the declaration of conformity [Go to Page]
