Highway Cables

National Motorway Communications System Specifications(TR Series)

TR2029-Inductive Loop Detector Cable

TR2029 inductive loop detector cable is a single core multistranded flexible cable sheathed with

polychloroprene designed for installation in a slot cut into the carriageway. It is used to measure and control

traffic flow. The cables are buried beneath the road in 'loops' and an electrical current is passed through them

creating a magnetic inductive field. the vehicle passing through this field that creates a disturbance and a means

by which to measure traffic flow and vehicle type. Typical applications are for traffic control signals, safety

cameras, variable speed control systems, flow monitoring and access control. The cables have to be of a robust

design to withstand a hostile working environment and accommodate back filling with hot bitumen during cable

pulling.

Conductor: Tin coated plain annealed copper, comply with IEC 60228 for Class 5

Insulation: Ethylene propylene rubber (EPR), GP1, 85 º C, comply with BS 7655

Insulation Color: Black

Sheath: Polychloroprene(PCP), RS3, 85 º C, comply with BS 7655,heavy-duty, oil-resisting and flame retardant

Sheath Color: Black

TR2029, IEC 60811 and BS 6500, BS EN 60332-1-2

TR2029 TRAFFIC CONTROL CABLE

Rated voltage: 450/750 volts

Minimum bending radius: 5 x Ø

Rated temperature: +90º C

Conductor resistance at 20°C: 1.5mm2---- 13.7ohms/km

2.5mm2---- 8.21ohms/km

Insulation resistance: >665 MO x km

Flame retardant: BS EN 60332-1-2

Number of Cores	Nominal Conductor Area	Nominal Conductor Stranding	Insulation Thickness	Sheath Thickness	Nominal O/D	Approx Cable Weight
Number of Cores	mm²	NO./mm	mm	mm	mm	Kg/km
EPR insulation only
1	1.5	30/0.25	1.1	-	3.8-4.0	30
1	2.5	50/0.25	2.1	-	6.1-6.4	48
EPR insulation with PCP sheath
1	1.5	30/0.25	0.8	1.4	5.8-7.2	65