ДСТУ EN 50305:2022 Железные дороги. Кабели подвижного железнодорожного состава, имеющие специальные противопожарные свойства. Методы испытаний (EN 50305:2002, IDT)



ДСТУ EN 50305:2022
(EN 50305:2002, IDT)

Залізниці. Кабелі залізничного рухомого складу,
що мають спеціальні протипожежні властивості. Методи випробувань

 
   
 
 
     
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

Introduction

1 Scope

2 Normative references

3 Definitions

4 Applicability, sampling, test-piece preparation and test conditions

4.1 Applicable tests

4.2 Classification of tests

4.3 Sampling

4.4 Test-piece preparation

4.5 Test conditions

5 Mechanical tests

5.1 Impact test at low temperature

5.2 Abrasion resistance

5.3 Notch propagation

5.4 Pliability

5.5 Strippability and adhesion of insulation

5.6 Dynamic cut-through

6 Electrical tests

6.1 Electrical resistance of conductors

6.2 Voltage test on completed cable

6.3 Voltage test on sheath

6.4 Insulation resistance

6.5 Spark test

6.6 Surface resistance

6.7 D.C. stability

6.8 Dielectric strength

7 Ageing and thermal tests

7.1 Compatibility

7.2 Long term ageing for insulation

7.3 Long term ageing for sheath

7.4 Ozone resistance

7.5 Pressure test at high temperature

7.6 Shrinkage test for insulation

7.7 Stress cracking test

8 Tests in fluids, including water

8.1 Mineral and fuel oil resistance

8.2 Acid and alkali resistance

8.3 Water absorption of sheath

9 Reaction to fire tests

9.1 Flame propagation

9.2 Toxicity

10 Miscellaneous tests

10.1 Durability of marking

10.2 Blocking of cores

Annex A (informative) List of other test methods applicable to rolling stock cables

Annex B (normative) Procedure for checking the efficacy of the method of spark testing (with reference to 6.5)

Annex C (informative) Long term ageing test – Significance and use

Annex D (informative) Illustration of an Arrhenius plot

Annex E (normative) Analysis methods for toxicity