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 RT/ZHLS, A-2Y(L)2Y External Telephone Cables to NR/PS/TEL/00015

RT/ZHLS, A-2Y(L)2Y External Telephone Cables to NR/PS/TEL/00015

Application

The cables are designed primarily for trackside railway installation in non electrifi ed area. For direct burial application, brass tape armoured or Zetabon type corrugated steel tape armoured can be offered against rodent attack.

Standards

NR/PS/TEL/00015 (formerly RT/E/PS/00015 or GK/RT 0315)

TS0886/BR1822

BR892

Construction

Conductors

Solid plain copper conductor, 0.63 or 0.9 mm nominal diameter.

Insulation

Solid polyethylene to BS 6234.

Cabling Element

Two insulated conductors are twisted together to form a pair.

Stranding

Pairs are helically stranded in 10 pair units.

Core Wrapping

Plastic tape(s) with overlapping.

Moisture Barrier

One laminated sheath made of aluminium tape (0.15mm) coated with PE-Copolymer on at least one side is applied with longitudinally overlap.

Outer Sheath

Polyethylene to BS 6234. LSZH compound option can be offered upon request.

Optional

Jelly Filled Cables: The cable core interstices are fi lled with petroleum jelly to avoid longitudinal water penetration within the cable. The water resistant filling compound is applied to the air space between non-hygroscopic tape and shield, shield and sheath within the cable core.
Armoured Cables: Corrugated steel tape armour coated on both sides with copolymer can be applied over an
intermediate sheath. The steel tape thickness is 0.145mm. Brass tape armour can be offered as an option.

Electrical Characteristics at 20℃

Nominal Conductor Diameter mm 0.63 0.9
Maximum Conductor Resistance Ω/km 60.0 30.0
Minimum Insulation Resistance @500 V DC (1min) MΩ.km 1500 1500
Maximum Conductor Capacitance @1000Hz (AC)      
Maximum Average Value      
For 20 pairs or less nF/km 70 79
More than 20 pairs nF/km 67 75
Maximum Individual Value 99% of pairs    
Up to 20 pairs nF/km 79.0 85.0
More than 20 pairs nF/km 75.0 81.0
Maximum Capacitance Unbalance @1000Hz pair to pair (99% of pairs)    
For 2 pairs (1 quad) pF/500m 800 800
All other sizes pF/500m 275 275
Dielectric Strength, conductor to screen (DC voltage 2mins) V 2000 2000
Maximum Average Attenuation    
@1.0KHz dB/km 1.40 0.95
@2.4KHz dB/km 2.15 1.46
@1.024MHz dB/km 18.70 14.6
Minimum Average Near-end Crosstalk    
@1.0KHz dB/km 70 70
@2.4KHz dB/km 65 65
@1.024MHz    
Within Units dB/km 40 40
Between Units dB/km 47 47
High Voltage Breakdown Test    
DC for 2mins V 2000 2000
AC for 2mins V 1333 1333

Mechanical and Thermal Properties

Minimum Bending Radius: 7.5×OD (unarmoured); 10×OD (armoured)

Temperature Range: -40℃ to +70℃ (during operation); -10℃ +60℃ (during installation)

Core Identification

Colour scheme, unit binder colour and cable make-up according to NR/PS/TEL/00015

Pair Number A Wire B Wire Unit Number Binder Colour Cable Size Number and Pair Size of Unit
Centre 1st Layer
1 WHITE BLUE 1 BLUE 2 1x2 -
2 WHITE ORANGE 2 ORANGE 5 1x5 -
3 WHITE GREEN 3 GREEN 10 1x10 -
4 WHITE BROWN 4 BROWN 20 4x5 -
5 WHITE GREY 5 GREY 20 2x10 -
6 RED BLUE 6 WHITE 30 6x5 -
7 RED ORANGE 7 RED 30 3x10 -
8 RED GREEN 8 BLACK 50 5x10 -
9 RED BROWN 9 YELLOW 50 1x10 4x10
10 RED GREY 10 VIOLET 75 3x5 6x10
100 2x10 8x10
100 3x10 7x10
100 4x5 8x10

Dimensions And Weight

A-2Y(L)2Y n×2×0.63/0.9

Cable Code Number of Pairs
(n)
Nominal Sheath
Thickness
mm
Maximum Overall
Diameter
mm
Nominal Weight
kg/km
0.63mm Conductor, 1.15mm Insulated Wire
RS/RT/ZHLS-2Y(L)2Y-2P0.63 2 2.7 12.3 103
RS/RT/ZHLS-2Y(L)2Y-5P0.63 5 2.7 13.8 155
RS/RT/ZHLS-2Y(L)2Y-10P0.63 10 2.7 15.6 212
RS/RT/ZHLS-2Y(L)2Y-20P0.63 20 2.7 18.1 309
RS/RT/ZHLS-2Y(L)2Y-30P0.63 30 2.7 20.4 403
RS/RT/ZHLS-2Y(L)2Y-50P0.63 50 2.7 24.2 574
RS/RT/ZHLS-2Y(L)2Y-75P0.63 75 2.7 28.2 779
RS/RT/ZHLS-2Y(L)2Y-100P0.63 100 2.7 31.0 974
0.9mm Conductor, 1.5mm Insulated Wire
RS/RT/ZHLS-2Y(L)2Y-2P0.9 2 2.7 13.3 131
RS/RT/ZHLS-2Y(L)2Y-5P0.9 5 2.7 15.6 208
RS/RT/ZHLS-2Y(L)2Y-10P0.9 10 2.7 18.1 305
RS/RT/ZHLS-2Y(L)2Y-20P0.9 20 2.7 21.9 477
RS/RT/ZHLS-2Y(L)2Y-30P0.9 30 2.7 25.2 639
RS/RT/ZHLS-2Y(L)2Y-50P0.9 50 2.7 30.0 951
RS/RT/ZHLS-2Y(L)2Y-75P0.9 75 2.7 35.8 1325
RS/RT/ZHLS-2Y(L)2Y-100P0.9 100 2.7 39.1 1688

A-2Y(F)(L)2YB2Y n×2×0.63/0.9 Jelly Filled & Armoured Cables

Cable Code Number of Pairs
(n)
Nominal Sheath
Thickness
mm
Maximum Overall
Diameter
mm
Nominal Weight
kg/km
Inner Outer
0.63mm Conductor, 1.15mm Insulated Wire
RS/RT/ZHLS-2Y(F)(L)2YB2Y-2P0.63 2 1.6 1.6 18.0 222
RS/RT/ZHLS-2Y(F)(L)2YB2Y-5P0.63 5 1.6 1.6 19.5 296
RS/RT/ZHLS-2Y(F)(L)2YB2Y-10P0.63 10 1.6 1.6 20.3 383
RS/RT/ZHLS-2Y(F)(L)2YB2Y-20P0.63 20 1.6 1.6 23.8 504
RS/RT/ZHLS-2Y(F)(L)2YB2Y-30P0.63 30 1.6 1.6 26.1 606
RS/RT/ZHLS-2Y(F)(L)2YB2Y-50P0.63 50 1.6 1.6 29.9 903
RS/RT/ZHLS-2Y(F)(L)2YB2Y-75P0.63 75 1.6 1.6 33.9 1202
RS/RT/ZHLS-2Y(F)(L)2YB2Y-100P0.63 100 1.6 1.6 36.7 1463
0.9mm Conductor, 1.5mm Insulated Wire
RS/RT/ZHLS-2Y(F)(L)2YB2Y-2P0.9 2 1.6 1.6 19.0 250
RS/RT/ZHLS-2Y(F)(L)2YB2Y-5P0.9 5 1.6 1.6 21.3 370
RS/RT/ZHLS-2Y(F)(L)2YB2Y-10P0.9 10 1.6 1.6 23.8 508
RS/RT/ZHLS-2Y(F)(L)2YB2Y-20P0.9 20 1.6 1.6 27.6 782
RS/RT/ZHLS-2Y(F)(L)2YB2Y-30P0.9 30 1.6 1.6 30.9 1000
RS/RT/ZHLS-2Y(F)(L)2YB2Y-50P0.9 50 1.6 1.6 35.7 1402
RS/RT/ZHLS-2Y(F)(L)2YB2Y-75P0.9 75 1.6 1.6 41.5 2055
RS/RT/ZHLS-2Y(F)(L)2YB2Y-100P0.9 100 1.6 1.6 44.8 2550