 Home >> Product >> Telephone Cable >> Outdoor Telephone Cable |
| |
|
Solid PE Insulated & AP Sheathed (ALPETH) Air Core Cables to GR-421 |
|
| |
| Applications |
|
| |
The cables are designed for use as subscriber distribution cables and as connection between central offices. The cables are suitable for installation in ducts, direct burial in the ground and also for aerial installation with integral suspension strand. An armoured option is offered for direct burial installations. A figure-8 self support option is offered for aerial installation. |
| Standards |
| |
• Telcordia (Bellcore) GR-421 |
| Construction |
| |
Conductors: Solid annealed bare copper, 0.4/0.5/0.63/0.9mm, as per ASTM B-3/class 1 of IEC 60228. |
|
| |
Insulation: Solid medium or high density polyethylene as per ASTM D 1248/IEC 60708. |
|
| |
Twisted Pairs: Insulated conductors are twisted into pairs with varying lay length to minimize crosstalk. |
| |
Cabling Element: Twisted Pairs. |
| |
Cable Core Assembly:Cables with up to 400 pairs are composed of 25-pair units or 12/13-pair units; cables with over
400 pairs are composed of 50 or 100-pair units. Any extra pairs form a separate unit. Units are identified by colour coded
binders. Construction is per GR-421 given in Cable Make Up Diagram. |
| |
Core Wrapping:One or more non-hygroscopic polyester tapes are helically or longitudinally laid with an overlap. These
tapes furnish thermal, mechanical as well as high dielectric protection between hielding and individual conductors. |
|
| |
Moisture Barrier: A layer of bare aluminium tape (0.2mm/8mil) is applied longitudinally with overlap over the cable core
to provide 100% electrical shielding coverage and ensures a barrier against water vapor. In cables with more than 200
pairs, the aluminum tape may be corrugated for improved cable flexibility. |
|
| |
Sheath:Black low density polyethylene as per ASTM D 1248/IEC 60708, being able to withstand exposure to sunlight,
temperature variations, ground chemicals and other environmental contaminants. |
| |
Ripcord: Ripcord may be provided for slitting the sheath longitudinally to facilitate its removal. |
| |
Spare Pairs (optional): Spare pairs may be incorporated for large pair cables. |
| |
Continuity Wire (optional): One tinned copper drain wire may be longitudinally laid to ensure electrical continuity of the
screen. |
|
| Optional Construction |
| |
• Armoured Cable: 0.15mm thick corrugated steel tape armour is applied with an overlap over an optional inner polyethylene sheath.
An outer polyethylene sheath is applied over the armour. |
| |
• Self-Support Cables: A 7-strand galvanized steel strand is used as support wire. Black polyethylene sheath covers both core and
support wire in a figure-8 construction. |
| |
|
| Abbreviations |
| |
LAP (CAP): Copolymer coated aluminium tape + PE sheath |
| |
LAPSP (CAPSP): LAP sheath + steel tape armour + PE sheath |
| |
AP (ALPETH): Bare aluminium tape + PE sheath |
| |
PAP: PE inner sheath + bare aluminium tape + PE sheath |
| |
PASP: PE inner sheath + bare aluminium tape + steel tape armour + PE outer sheath |
| |
ASP (STAPETH): Bare aluminium tape + steel tape armour + PE outer sheath |
| |
CACSP: Copolymer coated aluminum tape + copolymer coated steel tape armour + PE outer sheath |
| |
LAPSP: Copolymer coated aluminum tape +PE inner sheath + steel tape armour + PE outer sheath |
| |
FIGURE 8 LAP: Copolymer coated aluminum tape + PE outer sheath + self supporting |
| Electrical properties |
|
| |
| Nominal Conductor Diameter |
mm |
0.4 |
0.5 |
0.63 |
0.9 |
| Conductor Gauge Size |
AWG |
26 |
24 |
22 |
19 |
| Maximum Average DC Resistance |
Ω/km / Ω/mile |
140/225 |
87/140 |
55/88.6 |
27.0/43.4 |
| Maximum Individual DC Resistance |
Ω/km / Ω/mile |
144.2/232 |
89.5/144 |
56.5/91.0 |
28.0/45.0 |
| Minimum Insulation Resistance @500V DC |
MΩ.km / MΩ.mile |
1600/1000 |
1600/1000 |
1600/1000 |
1600/1000 |
| Maximum Average Resistance Unbalance |
% |
1.5 |
1.5 |
1.5 |
1.5 |
| Maximum Individual Resistance Unbalance |
% |
5 |
5 |
5 |
5 |
| Average Mutual Capacitance |
nF/km / nF/kft |
48.5-54.0/14.8-16.5 |
48.5-54.0/14.8-16.5 |
48.5-54.0/14.8-16.5 |
48.5-54.0/14.8-16.5 |
| Maximum Individual Mutual Capacitance |
nF/km / nF/kft |
57/17.4 |
57/17.4 |
57/17.4 |
57/17.4 |
Maximum Individual Capacitance Unbalance
pair-to-pair |
pF/km / pF/kft |
145/44 |
145/44 |
145/44 |
145/44 |
| Capacitance Unbalance RMS pair-to-pair |
pF/km / pF/kft |
45/13.7 |
45/13.7 |
45/13.7 |
45/13.7 |
Maximum Individual Capacitance Unbalance
pair-to-ground |
pF/km / pF/kft |
2625/800 |
2625/800 |
2625/800 |
2625/800 |
Maximum Average Capacitance Unbalance
pair-to-ground |
pF/km / pF/kft |
574/175 |
574/175 |
574/175 |
574/175 |
| Maximum Conductor Loop Resistance @20°C |
Ω/km / Ω/mile |
300/482 |
192/309 |
114/183.6 |
60/96.4 |
| Impedance @1KHz |
Ω |
994 |
796 |
660 |
445 |
| Impedance @100KHz |
Ω |
147 |
134 |
125 |
122 |
| Impedance @512KHz |
Ω |
120 |
118 |
117 |
116 |
| Impedance @1MHz |
Ω |
117 |
115 |
114 |
113 |
| Maximum Average Attenuation @0.8KHz |
dB/km / dB/kft |
1.64/0.5 |
1.30/0.39 |
1.04/0.32 |
0.74/0.22 |
| Maximum Average Attenuation @1KHz |
dB/km / dB/kft |
1.68/0.51 |
1.35/0.41 |
1.08/0.33 |
0.76/0.23 |
| Maximum Average Attenuation @3KHz |
dB/km / dB/kft |
3.18/0.97 |
2.52/0.77 |
2.01/0.61 |
1.42/0.43 |
| Maximum Average Attenuation @150KHz |
dB/km / dB/kft |
11.4/3.47 |
8.3/2.53 |
6.2/1.89 |
4.4/1.34 |
| Maximum Average Attenuation @772KHz |
dB/km / dB/kft |
24.3/7.4 |
19.4/5.9 |
15.4/4.7 |
10.8/3.3 |
| Maximum Average Attenuation @1000KHz |
dB/km / dB/kft |
27.1/8.25 |
21.4/6.52 |
17.5/5.33 |
12.8/3.89 |
| Dielectric Strength |
|
|
|
|
|
| Conductor to Conductor (3secs) |
V DC |
2400 |
3000 |
4000 |
5000 |
| Conductor to Conductor (3secs) |
V DC |
10000 |
10000 |
10000 |
10000 |
| Minimum EL Far-end Cross-talk-Mean Power Sum |
|
|
|
|
|
| @150KHz |
dB/305m / dB/kft |
61 |
63 |
63 |
65 |
| @772KHz |
dB/305m / dB/kft |
47 |
49 |
49 |
57 |
| @1.6MHz |
dB/305m / dB/kft |
41 |
42 |
43 |
44 |
| @3.15MHz |
dB/305m / dB/kft |
35 |
37 |
37 |
39 |
| @6.3MHz |
dB/305m / dB/kft |
29 |
31 |
31 |
33 |
| Minimum Far-end Cross-talk-Worst Pair Power Sum |
|
|
|
|
|
| @150KHz |
dB/305m / dB/kft |
57 |
57 |
57 |
59 |
| @772KHz |
dB/305m / dB/kft |
43 |
43 |
43 |
45 |
| @1.6MHz |
dB/305m / dB/kft |
37 |
37 |
37 |
39 |
| @3.15MHz |
dB/305m / dB/kft |
31 |
31 |
31 |
33 |
| @6.3MHz |
dB/305m / dB/kft |
25 |
25 |
25 |
27 |
| Minimum Near-end Cross-talk-Mean Power Sum |
|
|
|
|
|
| @150KHz |
dB/305m / dB/kft |
58 |
58 |
58 |
58 |
| @772KHz |
dB/305m / dB/kft |
47 |
47 |
47 |
47 |
| @1.6MHz |
dB/305m / dB/kft |
43 |
43 |
43 |
43 |
| @3.15MHz |
dB/305m / dB/kft |
38 |
38 |
38 |
38 |
| @6.3MHz |
dB/305m / dB/kft |
34 |
34 |
34 |
34 |
| Minimum Near-end Cross-talk-Worst Pair Power Sum |
|
|
|
|
|
| @150KHz |
dB/305m / dB/kft |
53 |
53 |
53 |
53 |
| @772KHz |
dB/305m / dB/kft |
42 |
42 |
42 |
42 |
| @1.6MHz |
dB/305m / dB/kft |
38 |
38 |
38 |
38 |
| @3.15MHz |
dB/305m / dB/kft |
33 |
33 |
33 |
33 |
| @6.3MHz |
dB/305m / dB/kft |
29 |
29 |
29 |
29 |
| Nominal Insulation Thickness |
mm |
0.175 |
0.2 |
0.26 |
0.3 |
| Nominal Insulated Conductor Diameter |
mm |
0.75 |
0.9 |
1.15 |
1.5 |
|
| 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) ; 15 x Overall Diameter (armoured cables) |
| Colour code |
| |
Standard colour code is per GR-421 given in Colour Code Chart. |
|
| Dimensions and weight |
| |
Solid PE Insulated and AP Sheathed (ALPETH) Air Core Cable to GR-421 |
| |
| Cable Code |
Number of Pairs |
Nominal Sheath
Thickness
mm/inch |
Nominal Overall
Diameter
mm/inch |
Nominal Weight
kg/km / lbs/kft |
| 0.4mm Conductor, 0.75mm Insulated Wire |
| TP421-2Y(A)2Y-25P04 |
25 |
1.5/0.059 |
12.0/0.47 |
141/95 |
| TP421-2Y(A)2Y-50P04 |
50 |
1.5/0.059 |
14.5/0.57 |
231/155 |
| TP421-2Y(A)2Y-100P04 |
100 |
1.7/0.067 |
18.5/0.73 |
394/265 |
| TP421-2Y(A)2Y-200P04 |
200 |
1.7/0.067 |
24.6/0.97 |
729/490 |
| TP421-2Y(A)2Y-300P04 |
300 |
1.8/0.071 |
28.0/1.10 |
1034/695 |
| TP421-2Y(A)2Y-400P04 |
400 |
1.9/0.075 |
33.0/1.30 |
1346/905 |
| TP421-2Y(A)2Y-600P04 |
600 |
2.1/0.083 |
38.1/1.50 |
1964/1320 |
| TP421-2Y(A)2Y-900P04 |
900 |
2.2/0.087 |
45.7/1.80 |
2931/1970 |
| TP421-2Y(A)2Y-1200P04 |
1200 |
2.4/0.094 |
53.3/2.10 |
3868/2600 |
| TP421-2Y(A)2Y-1500P04 |
1500 |
2.5/0.098 |
58.4/2.30 |
4791/3220 |
| TP421-2Y(A)2Y-1800P04 |
1800 |
2.5/0.098 |
63.5/2.50 |
5713/3839 |
| TP421-2Y(A)2Y-2000P04 |
2000 |
2.5/0.098 |
66.0/2.60 |
6348/4266 |
| TP421-2Y(A)2Y-2100P04 |
2100 |
2.5/0.098 |
68.6/2.70 |
6636/4459 |
| 0.5mm Conductor, 0.9mm Insulated Wire |
| TP421-2Y(A)2Y-25P05 |
25 |
1.5/0.059 |
13.2/0.52 |
195/131 |
| TP421-2Y(A)2Y-50P05 |
50 |
1.5/0.059 |
16.5/0.65 |
330/222 |
| TP421-2Y(A)2Y-100P05 |
100 |
1.7/0.067 |
21.8/0.86 |
590/396 |
| TP421-2Y(A)2Y-200P05 |
200 |
1.7/0.067 |
28.0/1.10 |
1100/739 |
| TP421-2Y(A)2Y-300P05 |
300 |
1.7/0.067 |
35.6/1.40 |
1620/1089 |
| TP421-2Y(A)2Y-400P05 |
400 |
1.8/0.071 |
38.1/1.50 |
2120/1425 |
| TP421-2Y(A)2Y-600P05 |
600 |
2.0/0.079 |
48.3/1.90 |
3120/2097 |
| TP421-2Y(A)2Y-900P05 |
900 |
2.2/0.087 |
55.9/2.20 |
4580/3078 |
| TP421-2Y(A)2Y-1200P05 |
1200 |
2.4/0.094 |
63.5/2.50 |
6070/4079 |
| TP421-2Y(A)2Y-1500P05 |
1500 |
2.5/0.098 |
71.2/2.80 |
7530/5060 |
| TP421-2Y(A)2Y-1600P05 |
1600 |
2.5/0.098 |
76.2/3.00 |
7700/5174 |
| TP421-2Y(A)2Y-1800P05 |
1800 |
2.5/0.098 |
78.7/3.10 |
8985/6038 |
| 0.63mm Conductor, 1.15mm Insulated Wire |
| TP421-2Y(A)2Y-25P063 |
25 |
1.5/0.059 |
15.5/0.61 |
275/185 |
| TP421-2Y(A)2Y-50P063 |
50 |
1.5/0.059 |
20.1/0.79 |
476/320 |
| TP421-2Y(A)2Y-100P063 |
100 |
1.7/0.067 |
28.0/1.10 |
885/595 |
| TP421-2Y(A)2Y-200P063 |
200 |
1.7/0.067 |
38.1/1.50 |
1666/1120 |
| TP421-2Y(A)2Y-300P063 |
300 |
1.7/0.067 |
43.2/1.70 |
2455/1650 |
| TP421-2Y(A)2Y-400P063 |
400 |
1.8/0.071 |
48.3/1.90 |
3229/2170 |
| TP421-2Y(A)2Y-600P063 |
600 |
1.9/0.075 |
58.4/2.30 |
4791/3220 |
| TP421-2Y(A)2Y-900P063 |
900 |
2.1/0.083 |
71.2/2.80 |
7082/4759 |
| TP421-2Y(A)2Y-1200P063 |
1200 |
2.2/0.087 |
81.3/3.20 |
9388/6308 |
| 0.9mm Conductor, 1.5mm Insulated Wire |
| TP421-2Y(A)2Y-25P09 |
25 |
1.5/0.059 |
20.1/0.79 |
476/320 |
| TP421-2Y(A)2Y-50P09 |
50 |
1.5/0.059 |
28.0/1.10 |
885/595 |
| TP421-2Y(A)2Y-100P09 |
100 |
1.7/0.067 |
38.1/1.50 |
1651/1109 |
| TP421-2Y(A)2Y-200P09 |
200 |
1.7/0.067 |
48.3/1.90 |
3199/2150 |
| TP421-2Y(A)2Y-300P09 |
300 |
1.7/0.067 |
61.0/2.40 |
4746/3189 |
|
|
|
| |
|
| |
Fig 8 Solid PE Insulated & AP Sheathed (Alpeth) Air Core Cable to GR-421 |
| |
| Cable Code |
Number
of
Pairs |
Support Messenger
Wire Diameter
mm/inch |
Nominal Sheath
Thickness
mm/inch |
Nominal Overall
Dimension
mm/inch |
Nominal Weight
kg/km / lbs/kft |
| 0.4mm Conductor, 0.75mm Insulated Wire |
| TP421-2Y(A)2Y-25P04-SS |
25 |
7/6.35 / 7/0.25 |
1.5/0.059 |
14.2/0.56 |
379/255 |
| TP421-2Y(A)2Y-50P04-SS |
50 |
7/6.35 / 7/0.25 |
1.5/0.059 |
16.8/0.66 |
469/315 |
| TP421-2Y(A)2Y-100P04-SS |
100 |
7/6.35 / 7/0.25 |
1.7/0.067 |
20.6/0.81 |
632/425 |
| TP421-2Y(A)2Y-200P04-SS |
200 |
7/6.35 / 7/0.25 |
1.7/0.067 |
25.4/1.00 |
952/640 |
| TP421-2Y(A)2Y-300P04-SS |
300 |
7/6.35 / 7/0.25 |
1.8/0.071 |
30.5/1.20 |
1257/845 |
| 0.5mm Conductor, 0.9mm Insulated Wire |
| TP421-2Y(A)2Y-25P05-SS |
25 |
7/6.35 / 7/0.25 |
1.5/0.059 |
16.0/0.63 |
431/290 |
| TP421-2Y(A)2Y-50P05-SS |
50 |
7/6.35 / 7/0.25 |
1.5/0.059 |
19.3/0.76 |
565/380 |
| TP421-2Y(A)2Y-100P05-SS |
100 |
7/6.35 / 7/0.25 |
1.7/0.067 |
24.6/0.97 |
826/555 |
| TP421-2Y(A)2Y-200P05-SS |
200 |
7/6.35 / 7/0.25 |
1.7/0.067 |
30.5/1.20 |
1317/885 |
| 0.63mm Conductor, 1.15mm Insulated Wire |
| TP421-2Y(A)2Y-25P063-SS |
25 |
7/6.35 / 7/0.25 |
1.5/0.059 |
17.8/0.70 |
513/345 |
| TP421-2Y(A)2Y-50P063-SS |
50 |
7/6.35 / 7/0.25 |
1.5/0.059 |
22.4/0.88 |
714/480 |
| TP421-2Y(A)2Y-100P063-SS |
100 |
7/6.35 / 7/0.25 |
1.7/0.067 |
30.5/1.20 |
1116/750 |
| 0.9mm Conductor, 1.5mm Insulated Wire |
| TP421-2Y(A)2Y-25P09-SS |
25 |
7/6.35 / 7/0.25 |
1.5/0.059 |
22.4/0.88 |
714/480 |
| TP421-2Y(A)2Y-50P09-SS |
50 |
7/6.35 / 7/0.25 |
1.5/0.059 |
30.5/1.20 |
1108/745 |
|
|
|
| |
|
| |
Solid PE Insulated & PAP Sheathed Air Core Cable to GR-421 |
| |
| Cable Code |
Number
of
Pairs |
Nominal Sheath Thickness |
Nominal Overall
Diameter
mm/inch |
Nominal
Weight
kg/km/lbs/kft |
| Inner |
Outer |
| mm/inch |
mm/inch |
| 0.4mm Conductor, 0.75mm Insulated Wire |
| TP421-2Y2Y(A)2Y-50P04 |
50 |
1.2/0.047 |
1.5/0.059 |
16.0/0.630 |
275/185 |
| TP421-2Y2Y(A)2Y-100P04 |
100 |
1.2/0.047 |
1.5/0.059 |
20.0/0.787 |
446/300 |
| TP421-2Y2Y(A)2Y-200P04 |
200 |
1.2/0.047 |
1.5/0.059 |
25.0/0.984 |
781/525 |
| TP421-2Y2Y(A)2Y-400P04 |
400 |
1.2/0.047 |
1.5/0.059 |
34.0/1.34 |
1443/970 |
| TP421-2Y2Y(A)2Y-600P04 |
600 |
1.6/0.063 |
2.0/0.079 |
40.0/1.57 |
2098/1410 |
| TP421-2Y2Y(A)2Y-900P04 |
900 |
1.6/0.063 |
2.0/0.079 |
48.0/1.89 |
3043/2045 |
| TP421-2Y2Y(A)2Y-1200P04 |
1200 |
1.6/0.063 |
2.0/0.079 |
54.0/2.13 |
4010/2695 |
| 0.5mm Conductor, 0.9mm Insulated Wire |
| TP421-2Y2Y(A)2Y-25P05 |
25 |
1.2/0.047 |
1.5/0.059 |
16.0/0.630 |
251/169 |
| TP421-2Y2Y(A)2Y-50P05 |
50 |
1.2/0.047 |
1.5/0.059 |
18.0/0.709 |
380/255 |
| TP421-2Y2Y(A)2Y-100P05 |
100 |
1.2/0.047 |
1.5/0.059 |
23.0/0.906 |
640/430 |
| TP421-2Y2Y(A)2Y-200P05 |
200 |
1.6/0.063 |
1.8/0.071 |
30.0/1.18 |
1146/770 |
| TP421-2Y2Y(A)2Y-300P05 |
300 |
1.6/0.063 |
1.8/0.071 |
36.0/1.42 |
1682/1130 |
| TP421-2Y2Y(A)2Y-400P05 |
400 |
1.6/0.063 |
2.0/0.079 |
41.0/1.61 |
2195/1475 |
| TP421-2Y2Y(A)2Y-600P05 |
600 |
1.8/0.071 |
2.3/0.090 |
49.0/1.93 |
3215/2160 |
| TP421-2Y2Y(A)2Y-900P05 |
900 |
2.0/0.079 |
2.5/0.098 |
59.0/2.32 |
4747/3190 |
| TP421-2Y2Y(A)2Y-1200P05 |
1200 |
2.2/0.079 |
2.7/0.106 |
67.0/2.64 |
6198/4165 |
| 0.63mm Conductor, 1.15mm Insulated Wire |
| TP421-2Y2Y(A)2Y-25P063 |
25 |
1.2/0.047 |
1.5/0.059 |
17.0/0.669 |
320/215 |
| TP421-2Y2Y(A)2Y-50P063 |
50 |
1.2/0.047 |
1.5/0.059 |
22.0/0.866 |
535/360 |
| TP421-2Y2Y(A)2Y-100P063 |
100 |
1.2/0.047 |
1.5/0.059 |
28.0/1.10 |
945/635 |
| TP421-2Y2Y(A)2Y-200P063 |
200 |
1.6/0.063 |
2.0/0.079 |
37.0/1.46 |
1771/1190 |
| TP421-2Y2Y(A)2Y-400P063 |
400 |
1.8/0.071 |
2.3/0.091 |
51.0/2.01 |
3363/2260 |
| TP421-2Y2Y(A)2Y-600P063 |
600 |
2.0/0.079 |
2.5/0.098 |
62.0/2.44 |
5015/3370 |
| 0.9mm Conductor, 1.5mm Insulated Wire |
| TP421-2Y2Y(A)2Y-25P09 |
25 |
1.2/0.047 |
1.5/0.059 |
21.0/0.827 |
528/355 |
| TP421-2Y2Y(A)2Y-50P09 |
50 |
1.2/0.047 |
1.5/0.059 |
27.0/1.06 |
930/625 |
| TP421-2Y2Y(A)2Y-100P09 |
100 |
1.6/0.063 |
2.0/0.079 |
36.0/1.42 |
1741/1170 |
| TP421-2Y2Y(A)2Y-200P09 |
200 |
1.8/0.071 |
2.3/0.091 |
50.0/1.97 |
3319/2230 |
|
| |
|
