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IEC60092 STANDARD Offshore & Marine Cables |
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MariLan Marine Lan Data & Communication Cables
Current Ratings for Continuous Service (IEC 60092-352)
Conductor
temperature |
90℃ |
Nominal cross-
sectional Area
(mm²) |
Single core
( A ) |
Two core
( A ) |
Three core & four core
( A ) |
0.5 |
10 |
8.5 |
7 |
0.75 |
13 |
11 |
9 |
1 |
18 |
15 |
13 |
1.5 |
23 |
20 |
16 |
2.5 |
30 |
26 |
21 |
4 |
40 |
34 |
28 |
6 |
52 |
44 |
36 |
10 |
72 |
61 |
50 |
16 |
96 |
82 |
67 |
25 |
127 |
108 |
89 |
35 |
157 |
133 |
110 |
50 |
196 |
167 |
137 |
70 |
242 |
206 |
169 |
95 |
293 |
249 |
205 |
120 |
339 |
288 |
237 |
150 |
389 |
331 |
273 |
185 |
444 |
377 |
311 |
240 |
522 |
444 |
366 |
300 |
601 |
511 |
420 |
|
d.c. |
a.c. |
d.c. |
a.c. |
d.c. |
a.c. |
400 |
690 |
670 |
587 |
570 |
483 |
469 |
500 |
780 |
720 |
663 |
612 |
546 |
504 |
500 |
890 |
780 |
757 |
663 |
623 |
546 |
Note
1. Maximum permissible service temperature of the conductor is 90℃.
2. The current ratings given above are based on an ambient air temperature of 45℃.
3. The current ratings given above are for 6 cables of less bunched or laid together in flat
formation. When more than 6 cables are bunched or laid close together, the current ratings
given above should be multiplied by correction factor 0.85.
4. For cables with more than four core cables, the current ratings are calculated by the
following formula.
I=I1/N1/3
I1: Current for single core cable
N: Number of cores
5. Correction factors for various ambient air temperature
Maximum
conductor temperature |
Correction factors for ambient air temperature |
℃ |
35 |
40 |
45 |
50 |
55 |
60 |
65 |
70 |
75 |
80 |
90 |
1.10 |
1.05 |
1.00 |
0.94 |
0.88 |
0.82 |
0.74 |
0.67 |
0.58 |
0.47 |
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