Applications

The drop wires are designed for extending an open wire line or distribution pairs from a pole or cable terminal to a building. The drop wires are to be installed between distribution point and telephone subscriber premises.

Standards

CW 1166 (Drop Wires No. 1)
CW 208 (Drop Wires No. 2)
CW 1247 (Drop Wires No. 6)
CW 1320A (Drop Wires No. 8)

Construction

Conductors	Insulation
Solid cadmium copper of 0.91mm to BS 4807 (Drop Wires No. 1)	PVC to BS 6746 T1 (Drop Wires No. 1)
Solid copper covered steel of 0.71mm to BS 4807 (Drop Wires No. 2)	PVC to BS 6746 T2 (Drop Wires No. 2)
Solid copper covered steel of 0.81mm to BS 4807 (Drop Wires No. 6)	PVC to BS 7878 T1 (Drop Wires No. 6)
Solid cadmium copper of 1.14mm to BS 4807 (Drop Wires No. 8)	PVC to BS 6746 T1 (Drop Wires No. 8)
Cable Core Assembly: Two conductors are extruded parallel, figure-8 type.

Electrical properties

Nominal Conductor Diameter	mm	0.91	0.71	0.81	1.14
BT Drop Wire Reference		No. 1	No.2	No.6	No. 8
Conductor Size	mm2	0.65	0.4	0.52	1.02
Minimum Insulation Resistance @500V DC	MΩ.km	24	24	50	24
Minimum Insulation Thickness	mm	0.75	1.02	0.8	1.52
Nominal Insulated Conductor Diameter	mm	2.41	2.75	2.41	4.18

Mechanical and thermal properties

Temperature range during operation (fixed state) : -30°C - +70°C
Temperature range during installation (mobile state) : -20°C - +50°C
Minimum bending radius : 10 x Overall Diameter (unarmoured cables)

Dimensions and weight

Cable Code	Number of Cores	Minimum Insulation Thickness	Maximum Cable Dimensions Diameter X Height	Nominal Weight
		mm	mm	Kg/km
0.91mm Conductor, 2.41mm Insulated Wire
TP1166-Y-1P091-DW1	2	0.75	2.7x5.6	25
0.71mm Conductor, 2.75mm Insulated Wire
TP208-Y-1P071-DW2	2	1.02	2.75x6.0	20
0.81mm Conductor, 2.41mm Insulated Wire
TP1247-Y-1P081-DW6	2	0.8	2.5x5.4	23
1.14mm Conductor, 4.18mm Insulated Wire
TP1320A-Y-1P114-DW8	2	1.52	4.44x9.4	34

2 Core 0.71mm 0.5mm Drop Wire Telephone Cable Copper Clad Steel Wire

亨達電力有限公司

IEC 60708 Copper Core PE insulation Parallel Telephone Cable HPY 2x0.8