Railway Signalling Cable, Network Rail-approved signalling cables

OVERVIEW

SPECIFICATIONS

CONSTRUCTION

PARAMETER

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Application

Signalling cables play an essential role in ensuring the smooth running and reliability of the railway network, hence their unique specifications and design. They ensure the transmission of signals and a continuous power supply across all trackside signalling equipment applications. These cables are used for control and signal conveyance and keep the rail networks, with their passengers and cargo, moving safely.
We offers a comprehensive range of Network Rail-approved signalling cables, with NR/PS/SIG/00005 specific applications designated by Type, and available in single, twin and multi-core varieties. Cables to this specification have an insulation which is either an elastomer or Low Smoke Zero Halogen (LSZH) type with tinned copper conductors. They have a voltage rating of 650/1100V and an operating temperature range of -25oC to +85oC.

Specifications

construction

parameter

Table 1

Table 2

Signalling Type A1, A2, A3 & A4	Signalling type A cables are light-duty flame-retardant and either insulated or insulated and sheathed in an LSZH compound. They have a Class 2 stranded tinned conductor. They are generally for internal use, with the smooth sheath being suitable for free wiring installation in ducting including relay rooms, signal boxes, REBs, and location cases.
Signalling Type B1 & B2	The signalling type B cable range is a heavy-duty Ethylene Propylene Rubber (EPR) insulated and heavy-duty Polychloroprene (HDPCP) sheathed cable with Class 2 stranded tinned conductor. This cable protects against mechanical impact, oils and greases, and other abrasions that are a normal part of railway usage. This signalling cable is used between equipment boxes, signal boxes, relay rooms and location cases.
Signalling Type C1, C2 & C3	Signalling type C cables are heavy-duty and suitable for tails. They have a Polyethylene Terephthalate (PET) Separator tape and a Class 5 flexible tinned conductor. The C3 type is for TPWS applications and has Drain Wire and Aluminium Tape (Al) screening.
Signalling Type D1 & D2 cable	The type D signalling cable range has a Class 2 stranded tinned conductor, an LSZH sheath and a PET Separator tape. Signalling type D are used for Type B1/B2 applications in tunnels and underground. With additional fire performance.
Signalling Type E1, E2 & E3 Cable	This type E cable is a Class 5 stranded tinned conductor with a Low Smoke Zero Halogen (LSZH) sheath. The E3 type has Drain Wire and Aluminium Tape (Al) screening. For Type C1/C2/C3 applications when used in tunnels and underground. With additional fire performance.
Signalling Cable	Co-Polymer cable manufactured to Westinghouse Brake & Signal Company specification D.S.C.E 1010 for Invensys Signalling system rail applications

	Signalling Type A1, A2, A3 & A4	Signalling Type B1 & B2	Signalling Type C1, C2 & C3	Signalling Type D1 & D2 cable	Signalling Type E1, E2 & E3 Cable	Signalling Cable
VOLTAGE	650/1100V					250/440V
CONDUCTOR	Class 2 Stranded Tinned Copper		Class 5 Flexible Stranded Tinned Copper	Class 2 Stranded Tinned Copper	Class 5 Flexible Stranded Tinned Copper	Class 2 Stranded Tinned Copper
INSULATION	LSZH (Low Smoke Zero Halogen) or EPR (Ethylene Propylene Rubber) composite (optional on Type A4)	EPR (Ethylene Propylene Rubber)		LSZH (Low Smoke Zero Halogen) or EPR (Ethylene Propylene Rubber)		Extruded PVC (Polyvinyl Chloride)
SEPARATOR	PET (Polyester Tape)		PET (Polyester Tape)
TAPE						Polyester
SCREEN			Aluminium Tape (C3 only)		Aluminium Tape (E3 only)
DRAIN WIRE			C3 only		E3 only
OUTER SHEATH	LSZH (Low Smoke Zero Halogen)	HDPCP (Heavy Duty Polychloroprene)		LSZH (Low Smoke Zero Halogen)	LSZH (Low Somke Zero Halogen)	PVC (Polyvinyl Chloride)

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