    
Hight voltage
cables with insulation of cross-linked polyethylene
HIGH VOLTAGE CABLES XHE 49 (-A)
110 kV
CONSTRUCTION CHARACTERISTICS OF CABLES XHE 49 (-A) 110 kV
| CONDUCTOR AREA |
mm2 |
300 |
400 |
500 |
630 |
800 |
1000 |
| Conductor diameter |
mm |
20.9 |
23.9 |
26.9 |
29.8 |
33.9 |
38.3 |
| Conductor screen thickness |
mm |
1.0 |
1.0 |
1.0 |
1.0 |
1.0 |
1.0 |
| Insulation thickness |
mm |
18.0 |
18.0 |
18.0 |
18.0 |
18.0 |
18.0 |
| Diameter over msulation |
mm |
59.9 |
62.9 |
65.9 |
6g,g |
72,g |
77.3 |
| Insulation screen thickness |
mm |
1.2 |
1.2 |
1.2 |
1.2 |
1.2 |
1.2 |
| Metaliic screen area |
mm2 |
50 |
50 |
70 |
70 |
95 |
95 |
| Outer sheath thickness |
mm |
3.3 |
3.4 |
3.6 |
3.7 |
3.8 |
4.0 |
| Cable diameter (approx.) |
mm |
74 |
77 |
81 |
84 |
89 |
93 |
| Conductor weight. |
| Cable XHE 49 |
kg/km |
2760 |
3530 |
4450 |
5745 |
7350 |
*** |
| Cable XHE 49 - A |
kg/km |
840 |
1075 |
1355 |
1750 |
2235 |
2820 |
| Cable weight: |
| Cable XHE 49 |
kg/km |
6940 |
7970 |
9345 |
10895 |
13105 |
*** |
| Cable XHE 49 - A |
kg/km |
5020 |
5515 |
6250 |
6895 |
7995 |
8985 |
ELECTRICAL CHARACTERISTICS OF CABLES XHE 49 (-A) 110 kV
| Conductor resistance at 20° C
(DC) |
| Cable XHE 49 |
ohm/km |
0.060 |
0.047 |
0.037 |
0.028 |
0.022 |
*** |
| Cable XHE 49 - A |
ohm/km |
0.100 |
0.078 |
0.061 |
0.047 |
0.037 |
0.029 |
| Conductor resistance at 90° C
(AC) |
| - Trefoil formation |
| Cable XHE 49 |
ohm/km |
0.078 |
0.062 |
0.049 |
0.039 |
0.032 |
*** |
| Cable XHE 49 - A |
ohm/km |
0.129 |
0.101 |
0.079 |
0.062 |
0.050 |
0.041 |
| - Flat formation (*) |
| Cable XHE 49 |
ohm/km |
0.078 |
0.061 |
0.049 |
0.039 |
0.031 |
*** |
| Cable XHE 49 - A |
ohm/km |
0.129 |
0.101 |
0.079 |
0.062 |
0.049 |
0.040 |
| Capacitance of cable |
nF/km |
139 |
150 |
162 |
172 |
187 |
203 |
| Inductance of cable |
mH/km |
0.452 |
0.433 |
0.418 |
0.405 |
0.390 |
0.375 |
| Direct impedance of cable |
| Cable XHE 49 |
ohm/km. |
0.159 |
0.146 |
0.137 |
0.130 |
0.124 |
*** |
| Cable XHE 49 - A |
ohm/km |
0.189 |
0.167 |
0.151 |
0.139 |
0.129 |
0.122 |
| Zero impedance of cable |
| Cable XHE 49 |
ohm/km |
0.295 |
0.274 |
0.225 |
0.212 |
0.176 |
*** |
| Cable XHE 49 - A |
ohm/km |
0.344 |
0.311 |
0.254 |
0.234 |
0.192 |
0.180 |
| Maximum electnc stress |
kV/mm |
S.8 |
5.6 |
5.4 |
5.3 |
5.1 |
4.9 |
| Earth fault current |
| Cable XHE 49 |
A/km |
313 |
339 |
384 |
406 |
454 |
*** |
| Cable XHE 49 - A |
A/km |
266 |
298 |
346 |
375 |
426 |
453 |
| Chargmg current |
A/km |
2.8 |
3.0 |
3.2 |
3.5 |
3.8 |
4.1 |
| Short-cicuit
current (1 sec): |
| - Conductor |
| Cable XHE 49 |
kA |
43.4 |
57.8 |
72.2 |
90.9 |
115.3 |
*** |
| Cable XHE 49 - A |
kA |
28.8 |
38.3 |
47.8 |
60.2 |
76.4 |
95.3 |
| Metallic screen |
kA |
7.7 |
7.7 |
10.6 |
10.6 |
14.3 |
14.3 |
| Current carrying capacity: |
| Cables in ground |
| - Trefoil formation |
| Cable XHE 49 |
A |
555 |
625 |
690 |
760 |
815 |
*** |
| Cable XHE 49 - A |
A |
440 |
S00 |
565 |
630 |
695 |
760 |
| - Flat formation (*) |
| Cable XHE 49 |
A |
520 |
570 |
605 |
650 |
680 |
*** |
| Cable XHE 49 - A |
A |
430 |
480 |
525 |
570 |
610 |
650 |
| Cables in air |
| - Trefoil formation |
| Cable XHE 49 |
A |
760 |
875 |
985 |
1110 |
1225 |
*** |
| Cable XHE 49 - A |
A |
600 |
695 |
?95 |
910 |
1025 |
1145 |
| - Flat formation (**) |
| Cable XHE 49 |
A |
760 |
870 |
970 |
1085 |
1185 |
*** |
| Cable XHE 49 - A |
A |
605 |
695 |
795 |
900 |
1005 |
1115 |
(*) Distance between cables is equal to cable diameter.
(**) Cables are touching.
(***) 1000 mm2 is produced only with Aluminium conductor.
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