G7621 Trackside Communications Cables

Application

The G7621 Trackside Communications cables are designed for installation in trackside bracket runs and for use in open locations (type1) or in tunnels or underground locations (type2).

Standards

LUL Spec G7621 A2 type 1 (for PVC sheath)
LUL Spec G7621 A2 type 2 (for LSZH sheath)

Construction

Conductors
Solid plain copper, 0.63/0.9 mm nominal diameter.

Insulation
Cellular polyethylene.

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

Core Wrapping
Non-hygroscopic plastic tape with overlapping.

Outer Sheath
PVC/LSZH sheath, coloured violet.

Core Identification

1 Pair Cable: Blue/White
3 Pair Cable: Blue/White Orange/White Green/White

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
Pair to Pair	pF/460m	100	100
Pair to Earth	pF/460m	1200	1200

Mechanical and Thermal Properties

Minimum Bending Radius: 7.5×OD
Temperature Range: -30℃ to +70℃ (during operation); -10℃ +55℃ (during installation)

Dimensions And Weight

Cable Code	No. of pairs	Nominal Thickness of Sheath mm	Nominal Overall Diameter mm	Nominal Weight kg/km
0.63mm Conductor, 1.15mm Insulated Wire
RS7621A2/T1-02YY-1P0.63	1	2.5	7.0	60
RS7621A2/T1-02YY-3P0.63	3	2.5	9.0	90
0.9mm Conductor, 1.5mm Insulated Wire
RS7621A2/T1-02YY-1P0.9	1	2.5	8.0	70
RS7621A2/T1-02YY-3P0.9	3	2.5	10.0	120