FAQ

EN45545-2, fire protection for railway vehicles Part 2, is about the fire protection requirements for materials and

components.

Rail vehicles are a type of vehicle with a large passenger flow. Most of the lines are in relatively confined spaces,

and they are also places with disorderly and densely populated people. It is difficult to escape and rescue in the

event of a disaster. In order to avoid train fire accidents, resulting in casualties and serious property losses,

countries around the world have continuously proposed higher prevention standards for possible fire safety

hazards in rail transit vehicles. EN 45545-2 is the European standard for fire protection test standards for

railway vehicle materials. The standard is divided into 26 different categories from R1 to R26 according to the

end use of the product and the risk level of fire. The cable application for our cable is R15 in-vehicle cable/R16

out-vehicle cable.

Depending on the different vehicle types and operating environments, the fire hazard levels are HL1, HL2, and

HL3. HL3 has the highest fire risk. The main evaluation performances are: smoke density (smoke), flammability

(fire); toxicity test (toxicity);

The test standard for smoke density is IEC61034-2, fire refers to single vertical burning (test standard IEC

60332-1), and bundle burning (IEC60332-3-24 and EN 50305 will be selected according to the different outer

diameters of the cables), and the test standard for toxicity is EN 50305

The difference between the application of in-vehicle cables and out-vehicle cables is mainly the difference in

smoke density. The other requirements are the same, and the in-vehicle use will have higher requirements for

smoke density. The smoke density requirements for in-vehicle cables according to the hazard levels HL1, HL2,

and HL3 are not less than 25%, 50%, and 70%, respectively, while the smoke density requirements for the

corresponding levels of out-vehicle cables are 0%, 25%, and 50%.