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G7622 Trackside Communications Cables

G7622 Trackside Communications Cables

Application

The cables are designed for installation in trackside bracket runs and for use within railway equipment rooms within open locations (type 1) or in subsurface tunnels and underground locations (type 2).

Standards

LUL Spec G7622 A1 type 1 (for PVC sheath)

LUL Spec G7622 A1 type 2 (for LSZH sheath)

Construction

Conductors

Solid plain copper, 0.63/0.9 mm nominal diameter.

Insulation

Cellular polyethylene.

Cabling Element

Four insulated conductors are twisted together to form a quad.

Stranding

Conductors are helically stranded in concentric layers.

Core Wrapping

Plastic tape (s) with overlapping.

Moisture Barrier

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

Outer Sheath

LSZH sheath, coloured violet.

Optional

Type 1 Cables: For type 1 cables, additional foil (at least one polyester tape) and PVC sheath are applied over the LSZH sheath. (VDE Code: A-02Y(L)HY)
Armoured Cables: Corrugated steel tape armour is applied with an overlap over LSZH sheath. An outer LSZH
sheath is applied over the armour. (VDE Code: A-02Y(L)H(SR)H)

Electrical Characteristics at 20℃

Nominal Conductor Diameter mm 0.63 0.9
Maximum Conductor Resistance
Average Value Ω/km 57.5 28
Individual Value Ω/km 59 29
Minimum Insulation Resistance @500 V DC MΩ.km 1500 1500
Maximum Average Mutual Capacitance nF/km 59 59
Maximum Average Capacitance Unbalance
Between pairs in same quad pF/460m 50 50
Between pairs (centre or in any layer) pF/460m 30 30
Between any pairs and earth pF/460m 200 200
Between phantom and pairs in same quad pF/460m 300 300

Mechanical and Thermal Properties

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

Temperature Range: -40℃ to +70℃ (during operation); -10℃ to +50℃ (during installation)

Core Identifi cation

Quad colours in centre and even layers

Position of Quad in Layer Centre and Even Layers Quad Whipping Colours
A Wire B Wire C Wire D Wire
1st Quad (Marker) ORANGE WHITE BLUE GREY WHITE/ORANGE
Even Quads RED WHITE VIOLET YELLOW WHITE
Odd Quads BROWN WHITE GREEN GREY WHITE
Last Quad ORANGE WHITE RED GREEN WHITE/ORANGE

Quad colours in odd layers

Position of Quad in Layer Centre and Even Layers Quad Whipping Colours
A Wire B Wire C Wire D Wire
1st Quad (Marker) ORANGE BLACK BLUE GREY WHITE/ORANGE
Even Quads RED BLACK VIOLET YELLOW WHITE
Odd Quads BROWN BLACK GREEN GREY WHITE
Last Quad ORANGE BLACK RED GREEN WHITE/ORANGE

Make-up of cable

Number of Pairs Number of Quads in centre and successive layers
Centre 1st Layer 2ndLayer 3th Layer 4th Layer 5th Layer 6th Layer
8 4 - - - - - -
14 1 6 - - - - -
20 2 8 - - - - -
28 4 10 - - - - -
38 1 6 12 - - - -
54 3 9 15 - - - -
74 1 6 12 18 - - -
104 4 10 16 22 - - -
160 4 10 16 22 28 - -
228 4 10 16 22 28 34 -
308 4 10 16 22 28 34 40

Dimensions And Weight

G7622 A1 Type 2 Cables

Cable Code No. of pairs Minimum Sheath
Thickness
mm
Nominal Overall
Diameter
mm
Nominal Weight
kg/km
0.63mm Conductor, 1.0mm Insulated Wire
RS7622A1/T2-02Y(L)H-8P0.63 8 2.5 14.5 190
RS7622A1/T2-02Y(L)H-14P0.63 14 2.5 16.0 240
RS7622A1/T2-02Y(L)H-20P0.63 20 2.5 17.5 310
RS7622A1/T2-02Y(L)H-28P0.63 28 2.5 19.5 380
RS7622A1/T2-02Y(L)H-38P0.63 38 2.5 21.5 470
RS7622A1/T2-02Y(L)H-54P0.63 54 2.5 23.5 610
RS7622A1/T2-02Y(L)H-74P0.63 74 2.5 25.5 780
RS7622A1/T2-02Y(L)H-104P0.63 104 2.5 29.0 1020
RS7622A1/T2-02Y(L)H-160P0.63 160 2.5 34.0 1498
RS7622A1/T2-02Y(L)H-228P0.63 228 2.5 39.0 1993
RS7622A1/T2-02Y(L)H-308P0.63 308 2.5 43.5 2670
0.9mm Conductor, 1.5mm Insulated Wire
RS7622A1/T2-02Y(L)H-8P0.9 8 2.5 17.5 280
RS7622A1/T2-02Y(L)H-14P0.9 14 2.5 20.0 380
RS7622A1/T2-02Y(L)H-20P0.9 20 2.5 22.5 500
RS7622A1/T2-02Y(L)H-28P0.9 28 2.5 24.5 630
RS7622A1/T2-02Y(L)H-38P0.9 38 2.5 25.5 790
RS7622A1/T2-02Y(L)H-54P0.9 54 2.5 29.0 1060
RS7622A1/T2-02Y(L)H-74P0.9 74 2.5 32.5 1370
RS7622A1/T2-02Y(L)H-108P0.9 108 2.5 37.5 1830

G7622 A1 Type 1 Cables

Cable Code No. of pairs Minimum Sheath Thickness
mm
Nominal Overall
Diameter
mm
Nominal Weight
kg/km
0.63mm Conductor, 1.0mm Insulated Wire
RS7622A1/T1-02Y(L)HY-8P0.63 8 2.5 3.0 20.5 330
RS7622A1/T1-02Y(L)HY-14P0.63 14 2.5 3.0 22.0 390
RS7622A1/T1-02Y(L)HY-20P0.63 20 2.5 3.0 23.5 480
RS7622A1/T1-02Y(L)HY-28P0.63 28 2.5 3.0 25.5 560
RS7622A1/T1-02Y(L)HY-38P0.63 38 2.5 3.0 27.5 660
RS7622A1/T1-02Y(L)HY-54P0.63 54 2.5 3.0 29.5 830
RS7622A1/T1-02Y(L)HY-74P0.63 74 2.5 3.0 31.5 1010
RS7622A1/T1-02Y(L)HY-104P0.63 104 2.5 3.0 35.0 1290
0.9mm Conductor, 1.5mm Insulated Wire
RS7622A1/T1-02Y(L)HY-8P0.9 8 2.5 3.0 23.5 440
RS7622A1/T1-02Y(L)HY-14P0.9 14 2.5 3.0 26.0 550
RS7622A1/T1-02Y(L)HY-20P0.9 20 2.5 3.0 28.5 700
RS7622A1/T1-02Y(L)HY-28P0.9 28 2.5 3.0 30.5 840
RS7622A1/T1-02Y(L)HY-38P0.9 38 2.5 3.0 31.5 1020
RS7622A1/T1-02Y(L)HY-54P0.9 54 2.5 3.0 35.0 1310
RS7622A1/T1-02Y(L)HY-74P0.9 74 2.5 3.0 38.5 1650
RS7622A1/T1-02Y(L)HY-104P0.9 104 2.5 3.0 43.5 2160

Armoured G7622 A1 Type 2 Cables

Cable Code No. of pairs Minimum Sheath Thickness
mm
Nominal Overall
Diameter
mm
Nominal Weight
kg/km
Inner Outer
0.63mm Conductor, 1.0mm Insulated Wire
RS7622A1/T2-02Y(L)H(SR)H-8P0.63 8 1.2 2.5 18.2 430
RS7622A1/T2-02Y(L)H(SR)H-14P0.63 14 1.2 2.5 19.0 500
RS7622A1/T2-02Y(L)H(SR)H-20P0.63 20 1.2 2.5 21.2 600
RS7622A1/T2-02Y(L)H(SR)H-28P0.63 28 1.2 2.5 22.6 690
RS7622A1/T2-02Y(L)H(SR)H-38P0.63 38 1.2 2.5 24.2 810
RS7622A1/T2-02Y(L)H(SR)H-54P0.63 54 1.2 2.5 26.7 980
RS7622A1/T2-02Y(L)H(SR)H-74P0.63 74 1.2 2.5 29.2 1190
RS7622A1/T2-02Y(L)H(SR)H-104P0.63 104 1.2 2.5 32.6 1480