PE Insulated & PE Sheathed Non Metallic Reinforced Drop Wires to RUS (REA) PE-7
Applications
The drop wires are one or two pair aerial service wires designed for use in extending telephone service to subscriber premises from the cable terminal.
Standards
Construction
| Conductors |
Solid annealed bare copper 0.5/0.8mm as per ASTM B-3/IEC 60228 Class 1. |
| Insulation |
Solid polyethylene as per ASTM D 1248/IEC 60708. |
| Cable Core Assembly & Core Wrapping |
Individual conductors are twisted into pairs and wrapped with PETP tape. |
| Strength Member |
Aramid yarn as non-metallic strength member is placed inside the sheath to provide longitudinal strength. |
| Sheath |
PE is extruded over the core to provide protection against mechanical damage, degradation by sunlight and water ingress. |
| Ripcord |
A ripcord made of polyamide is placed parallel to the core to facilitate sheath removal. |
Electrical properties
| Conductor Diameter |
mm |
0.5 |
0.8 |
| Conductor Gauge Size |
AWG |
24 |
20 |
| Maximum Conductor Resistance @20°C |
Ω/km / Ω/mile |
91/145.78 |
34.6/55.72 |
| Minimum Insulation Resistance @500V DC |
MΩ.km / MΩ.mile |
10000/6214 |
10000/6214 |
| Maximum Resistance Unbalance |
% |
2 |
2 |
| Average Mutual Capacitance @1000Hz |
nF/km / nF/kft |
55/16.8 |
55/16.8 |
| Maximum Capacitance Unbalance pair-to-pair |
pF/km / pF/kft |
300/91 |
300/91 |
| Maximum Capacitance Unbalance pair-to-ground |
pF/km / pF/kft |
1000/303.4 |
1000/303.4 |
| Impedance @0.8KHz |
Ω/km / Ω/mile |
600/965.6 |
600/965.6 |
| Impedance @64KHz |
Ω/km / Ω/mile |
125/201.2 |
125/201.2 |
| Impedance @772KHz |
Ω/km / Ω/mile |
100/160.9 |
100/160.9 |
| Maximum Average Attenuation @0.8KHz |
Ω/km / Ω/mile |
1.5/2.4 |
1.5/2.4 |
| Maximum Average Attenuation @64KHz |
Ω/km / Ω/mile |
8.0/12.87 |
8.0/12.87 |
| Maximum Average Attenuation @772KHz |
Ω/km / Ω/mile |
18/28.97 |
18/28.97 |
| Dielectric Strength 1min |
V |
1000DC/1500AC |
1000DC/1500AC |
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)
Colour code
|
A wire |
B wire |
| 1 PR |
White |
Blue |
| 2 PR |
Yellow |
Black |
Dimensions and weight
| Cable Code |
Number of Pairs |
Insulation Thickness |
Sheath Thickness |
Nominal Overall Diameter |
Nominal Weight |
| mm/inch |
mm/inch |
mm/inch |
kg/km / lbs/kft |
| 0.5mm Conductor, 0.9mm Insulated Wire |
| TP7-2Y2Y-2P05-SS-A |
2 |
0.2/0.0079 |
1.2/0.047 |
5.0/0.197 |
26.2/17.6 |
| 0.8mm Conductor, 1.36mm Insulated Wire |
| TP7-2Y2Y-1P08-SS-A |
1 |
0.28/0.0110 |
1.2/0.047 |
5.3/0.209 |
26.6/17.9 |
