WTB (Wired Train Bus) / MVB (Multifunction Vehicle Bus) Cables
FRL-WTB/MVB-02Y(ST+C)H-1P20A

A. Conductor B. Insulation C. Screen D. Sheath

Application

The cables are designed for permanent installation inside of rolling stock to connect fixed parts. A typical application is a communication system in a locomotive. The system uses a wire backed bus system to the TCN standard for control and instrumentation and for diagnostics. This bus system consists of the rail bus WTB (Wired Train Bus) and the road bus MVB (Multifunction Vehicle Bus) which are connected via redundant gateways.

Construction

Conductors
Stranded tin plated copper conductor according to IEC 60228 class 5

Insulation
Foam PE or Foam Skin

Cable Element
Twisted pair

Core Wrapping
Plastic tape(s)
EMC Screen1
Aluminium clad polyester foil
EMC Screen2
Tin plated copper braid

Core Wrapping
Plastic tape(s)

Outer Sheath
Cross-linked oil resistant LSZH compound

Electrical & Mechanical Properties

Nominal Voltage	300V
Maximum Conductor Temperature	100℃
Minimum Permissible Ambient Temperature	-40°C
Bending Radius	12 x Overall Diameter

Chemical & Environmental Properties

EN 60684-2	No fluorine
EN 50305; EN 60811-2-1	Resistance to mineral oil & fuel oil, acid & alkali
EN 50305	Resistance to ozone

Fire Performance for rolling stock application

EN 50306-2	Hazard levels HL1, HL2, HL3
DIN 5510-2	Protection level 1/2/3/4
BS 6853	Interior use 1a, 1b, II; Exterior use 1a, 1b, II
NF F 16-101	F0
EN45545-2	R15 Interior/ R16 Exterior HL1, HL2, HL3

Fire Performance in general

EN 50265-2-1; IEC 60332-1-2; NF C 32-070 2.1 (C2)	Vertical flame propogation for a single insulated wire or cable
EN 50266-2-4 + EN 50305; IEC 60332-3-24; NF C 32-070 2.2 (C1); VDE 0472 Teil 804	Vertical flame spread of vertically mounted bunched wires or cables
EN 50268-2; IEC 61034-2; NF C 32-073 ; NF C 20-902; NF F 16 101; VDE 0472 Teil 816	Low Smoke Emission
EN 50267-2-1; IEC 60754-1; NF C 32-074;NF C 20-454; VDE 0472 Teil 815	Halogen Free
EN 50267-2-2/3; IEC 60754-2; NF C 32-074;NF C 20-453; VDE 0472 Teil 813	Low Corrosivity (Acidity & Conductivity)
EN 50305; NFX 70-100; NFF 63808; TM1-04; BS6853	Low Toxicity
NFF 16101; NFF 63808; BS6853	Smoke index
EN45545-2	Requirement for fire behavior of materials & components R15/R16

FRL-WTB/MVB-02Y(ST+C)H-1P20A

Nominal Cross Sectional Area		Number & Nominal Diameter of Strands	Nominal Sheath Thickness	Nominal Overall Diameter	Nominal Weight	Maximum Conductor Resistance	Impedance	Maximum Attenuation
						20°C	@0.75-3MHz	@1MHz	@2MHz
mm2	AWG	No/mm	mm	mm	kg/km	Ω/km	Ω	dB/km	dB/km
0.62	20	19/0.2	1.2	8.3	80	33.1	120+/-12	10	15