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| 聚氯乙烯绝缘电力电缆直埋地敷设的载流量 |
作者:本站 来源:www.elecfans.com 发布时间:2008-6-28 1:23:30 减小字体 增大字体 |
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聚氯乙烯绝缘电力电缆直埋地敷设的载流量(ρτ=1.2℃×m/W、θn=70℃)
|
主线芯截面
(mm2) |
中性线截面
(mm2) |
1~3KV(A) |
6KV(A) 3芯 |
|
2芯 |
3芯 |
单芯θn=30℃ |
| 20℃ |
25℃ |
30℃ |
20℃ |
25℃ |
30℃ |
|
|
20℃ |
25℃ |
30℃ |
|
|
BLX、
BLXF、
铝芯 |
4 |
2.5 |
37 |
35 |
33 |
30 |
29 |
27 |
|
|
|
|
|
|
|
6 |
4 |
45 |
43 |
40 |
39 |
37 |
35 |
|
|
|
|
|
|
|
10 |
6 |
62 |
59 |
55 |
53 |
50 |
47 |
|
|
50 |
48 |
45 |
|
|
16 |
10 |
83 |
79 |
74 |
68 |
65 |
61 |
|
|
68 |
65 |
61 |
|
|
25 |
10 |
105 |
100 |
94 |
87 |
83 |
78 |
|
|
87 |
83 |
78 |
|
|
35 |
16 |
131 |
125 |
118 |
116 |
110 |
103 |
|
|
105 |
100 |
94 |
|
|
50 |
25 |
158 |
150 |
141 |
131 |
125 |
118 |
|
|
131 |
125 |
118 |
|
|
70 |
35 |
189 |
180 |
169 |
152 |
145 |
136 |
180 |
165 |
158 |
150 |
141 |
|
|
95 |
50 |
231 |
220 |
207 |
184 |
175 |
165 |
205 |
195 |
189 |
180 |
169 |
|
| 120 |
70 |
257 |
245 |
230 |
210 |
200 |
188 |
230 |
225 |
210 |
200 |
188 |
|
| 150 |
70 |
294 |
280 |
263 |
242 |
230 |
216 |
250 |
255 |
242 |
230 |
216 |
|
| 185 |
95 |
|
|
|
273 |
260 |
244 |
275 |
285 |
273 |
260 |
244 |
|
| 240 |
120 |
|
|
|
320 |
305 |
287 |
315 |
330 |
320 |
305 |
287 |
|
| 300 |
150 |
|
|
|
357 |
340 |
320 |
350 |
375 |
347 |
330 |
310 |
|
| 400 |
|
|
|
|
|
|
|
395 |
435 |
|
|
|
|
| 500 |
|
|
|
|
|
|
|
430 |
495 |
|
|
|
|
| 630 |
|
|
|
|
|
|
|
480 |
530 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
BLX、
BLXF、
铜芯 |
4 |
2.5 |
46 |
44 |
|
39 |
37 |
35 |
|
|
|
|
|
|
|
6 |
4 |
58 |
55 |
|
49 |
47 |
44 |
|
|
|
|
|
|
|
10 |
6 |
79 |
75 |
|
68 |
65 |
61 |
|
|
|
67 |
64 |
60 |
|
16 |
10 |
105 |
100 |
|
89 |
85 |
80 |
|
|
|
88 |
84 |
79 |
|
25 |
10 |
137 |
130 |
|
116 |
110 |
103 |
|
|
|
110 |
105 |
99 |
|
35 |
16 |
168 |
160 |
|
142 |
135 |
127 |
|
|
|
137 |
130 |
122 |
|
50 |
25 |
205 |
195 |
|
173 |
165 |
155 |
|
|
|
168 |
160 |
150 |
|
70 |
35 |
247 |
235 |
|
205 |
195 |
183 |
230 |
210 |
|
200 |
190 |
179 |
|
95 |
50 |
294 |
280 |
|
247 |
235 |
221 |
260 |
255 |
|
242 |
230 |
216 |
| 120 |
70 |
336 |
320 |
|
278 |
265 |
249 |
290 |
285 |
|
273 |
260 |
244 |
| 150 |
70 |
378 |
360 |
|
320 |
305 |
287 |
320 |
325 |
|
310 |
295 |
277 |
| 185 |
95 |
|
|
|
357 |
340 |
320 |
350 |
365 |
|
352 |
335 |
| | |