Scada/Pilot Cables NR/PS/ELP/27220

Application

The railway telecom cables are suitable for modem based supervisory system operating in the VF range from 300 to 3000Hz.

Standards

NR/PS/ELP/27220 (formerly RT/E/PS/0034)

Construction

Conductors
Class 1 solid plain copper conductor 0.9 mm nominal diameter to BS 6360, complies with BS 3573.

Insulation
Solid polyethylene type 03 to BS 6234.

Cabling Element
Two insulated conductors are twisted together to form a pair.

IFilling
Petroleum jelly fi lled.

Core Wrapping
PETP (Polyethylene Terephthalate) tape.

Moisture Barrier
One laminated sheath made of aluminium tape coated with PE-Copolymer on at least one side is applied with longitudinally overlap.

Inner Sheath
Low density polyethylene type 03C to BS 6234.

Screen
Aluminium wire screen.

Core Wrapping
Water blocking tape.

Sheath
Low density polyethylene type 03C to BS 6234.

Electrical Characteristics at 20℃

Nominal Conductor Diameter	mm	0.9
Maximum Conductor Resistance	Ω/km	30.0
Maximum Average Mutual Capacitance @1000Hz (AC)	nF/km	71
Maximum Capacitance Unbalance @1000Hz pair to pair	pF/500m	275

Mechanical and Thermal Properties

Minimum Bending Radius: 10×OD
Temperature Range: -25℃ to +85℃ (during operation); -10℃ to +70℃ (during installation)

Dimensions And Weight

Cable Code	Number of Pairs	Nominal Sheath Thickness mm	Maximum Overall Diameter mm	Nominal Weight kg/km
0.9mm Conductor, 1.5mm Insulated Wire
RS27220-2Y(F)(L)2YB2Y-10P0.9	10	1.8	25.8	755
RS27220-2Y(F)(L)2YB2Y-20P0.9	20	1.8	27.8	946
RS27220-2Y(F)(L)2YB2Y-30P0.9	30	2.0	31.8	1225
RS27220-2Y(F)(L)2YB2Y-50P0.9	50	2.0	35.8	1643
RS27220-2Y(F)(L)2YB2Y-75P0.9	75	2.2	41.6	2240
RS27220-2Y(F)(L)2YB2Y-100P0.9	100	2.2	46.6	2780