HOMEPRODUCTS RAILWAY CABLES

 

G7621 Trackside Communications Cables

 

Application:

The 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