表9-21 橡皮绝缘电线穿钢管敷设的载流量(θn=65℃)
|
截 面 (mm2) |
2根单芯(A) |
管径(mm) |
3根单芯(A) |
管径(mm) |
4根单芯(A) |
管径(mm) |
|||||||||||||||||||
|
支 线 |
干 线 |
支 线 |
干 线 |
支 线 |
干 线 |
||||||||||||||||||||
|
25℃ |
30℃ |
35℃ |
40℃ |
G |
DG |
G |
DG |
25℃ |
30℃ |
35℃ |
40℃ |
G |
DG |
G |
DG |
25℃ |
30℃ |
35℃ |
40℃ |
G |
DG |
G |
DG |
||
|
BLX BLXF 铝芯 |
2.5 |
21 |
19 |
18 |
16 |
15 |
19 |
|
|
19 |
17 |
16 |
15 |
15 |
19 |
|
|
16 |
14 |
13 |
12 |
20 |
25 |
|
|
|
4 |
28 |
26 |
24 |
22 |
20 |
25 |
|
|
25 |
23 |
21 |
19 |
20 |
25 |
|
|
23 |
21 |
19 |
18 |
20 |
25 |
|
|
|
|
6 |
37 |
34 |
32 |
29 |
20 |
25 |
|
|
34 |
31 |
29 |
26 |
20 |
25 |
|
|
30 |
28 |
25 |
23 |
20 |
25 |
|
|
|
|
10 |
52 |
48 |
44 |
41 |
25 |
32 |
25 |
32 |
46 |
43 |
39 |
36 |
25 |
32 |
25 |
32 |
40 |
37 |
34 |
31 |
25 |
32 |
32 |
38 |
|
|
16 |
66 |
61 |
57 |
52 |
25 |
32 |
32 |
38 |
59 |
55 |
51 |
46 |
32 |
32 |
32 |
38 |
52 |
48 |
44 |
41 |
32 |
38 |
40 |
(51) |
|
|
25 |
86 |
80 |
74 |
68 |
32 |
38 |
32 |
(51) |
76 |
71 |
65 |
60 |
32 |
38 |
32 |
(51) |
68 |
63 |
58 |
53 |
40 |
(51) |
40 |
(51) |
|
|
35 |
106 |
99 |
91 |
83 |
32 |
(51) |
50 |
(51) |
94 |
87 |
81 |
74 |
32 |
(51) |
50 |
(51) |
83 |
77 |
71 |
65 |
40 |
(51) |
50 |
|
|
|
50 |
133 |
124 |
115 |
105 |
50 |
(51) |
50 |
(51) |
118 |
110 |
102 |
93 |
50 |
(51) |
50 |
(51) |
105 |
98 |
90 |
83 |
50 |
|
65 |
|
|
|
70 |
165 |
154 |
142 |
130 |
50 |
(51) |
65 |
|
150 |
140 |
129 |
118 |
50 |
(51) |
65 |
|
133 |
124 |
115 |
105 |
65 |
|
65 |
|
|
|
95 |
200 |
187 |
173 |
158 |
65 |
|
65 |
|
180 |
168 |
155 |
142 |
65 |
|
65 |
|
160 |
149 |
138 |
126 |
65 |
|
65 |
|
|
|
120 |
230 |
215 |
198 |
181 |
65 |
|
65 |
|
210 |
196 |
181 |
166 |
65 |
|
65 |
|
190 |
177 |
164 |
150 |
65 |
|
80 |
|
|
|
150 |
260 |
243 |
224 |
205 |
65 |
|
80 |
|
240 |
224 |
207 |
189 |
65 |
|
80 |
|
220 |
205 |
190 |
174 |
80 |
|
80 |
|
|
|
185 |
295 |
275 |
255 |
233 |
80 |
|
80 |
|
270 |
252 |
233 |
213 |
80 |
|
80 |
|
250 |
233 |
216 |
197 |
80 |
|
100 |
|
|
|
BX BXF 铜芯 |
1 |
15 |
14 |
12 |
11 |
15 |
19 |
|
|
14 |
13 |
12 |
11 |
15 |
19 |
|
|
12 |
11 |
10 |
9 |
15 |
19 |
|
|
|
1.5 |
20 |
18 |
17 |
15 |
15 |
19 |
|
|
18 |
16 |
15 |
14 |
15 |
19 |
|
|
17 |
15 |
14 |
13 |
20 |
25 |
|
|
|
|
2.5 |
28 |
26 |
24 |
22 |
15 |
19 |
|
|
25 |
23 |
21 |
19 |
15 |
19 |
|
|
23 |
21 |
19 |
18 |
20 |
25 |
|
|
|
|
4 |
37 |
34 |
32 |
29 |
20 |
25 |
|
|
33 |
30 |
28 |
26 |
20 |
25 |
|
|
30 |
28 |
25 |
23 |
20 |
25 |
|
|
|
|
6 |
49 |
45 |
42 |
38 |
20 |
25 |
|
|
43 |
40 |
37 |
34 |
20 |
25 |
|
|
39 |
36 |
33 |
30 |
20 |
25 |
|
|
|
|
10 |
68 |
63 |
58 |
53 |
25 |
32 |
25 |
32 |
60 |
56 |
51 |
47 |
25 |
32 |
25 |
32 |
53 |
49 |
45 |
41 |
25 |
32 |
32 |
38 |
|
|
16 |
86 |
80 |
74 |
68 |
25 |
32 |
32 |
38 |
77 |
71 |
66 |
60 |
32 |
32 |
32 |
38 |
69 |
64 |
59 |
54 |
32 |
38 |
40 |
(51) |
|
|
25 |
113 |
105 |
97 |
89 |
32 |
38 |
32 |
(51) |
100 |
93 |
86 |
79 |
32 |
38 |
32 |
(51) |
90 |
84 |
77 |
71 |
40 |
(51) |
40 |
(51) |
|
|
35 |
140 |
130 |
121 |
110 |
32 |
(51) |
50 |
(51) |
122 |
114 |
105 |
96 |
32 |
(51) |
50 |
(51) |
110 |
102 |
95 |
87 |
40 |
(51) |
50 |
|
|
|
50 |
175 |
163 |
151 |
138 |
50 |
(51) |
50 |
(51) |
154 |
143 |
133 |
121 |
50 |
(51) |
50 |
(51) |
137 |
128 |
118 |
108 |
50 |
|
65 |
|
|
|
70 |
215 |
201 |
185 |
170 |
50 |
(51) |
65 |
|
193 |
180 |
166 |
152 |
50 |
(51) |
65 |
|
173 |
161 |
149 |
136 |
65 |
|
65 |
|
|
|
95 |
260 |
243 |
224 |
205 |
65 |
|
65 |
|
235 |
219 |
203 |
185 |
65 |
|
65 |
|
210 |
196 |
181 |
166 |
65 |
|
65 |
|
|
|
120 |
300 |
280 |
259 |
237 |
65 |
|
65 |
|
270 |
252 |
233 |
213 |
65 |
|
65 |
|
245 |
229 |
211 |
193 |
65 |
|
80 |
|
|
|
150 |
340 |
317 |
294 |
268 |
65 |
|
80 |
|
310 |
289 |
268 |
245 |
65 |
|
80 |
|
280 |
261 |
242 |
221 |
80 |
|
80 |
|
|
|
185 |
385 |
359 |
333 |
304 |
80 |
|
80 |
|
355 |
331 |
307 |
280 |
80 |
|
80 |
|
320 |
299 |
276 |
253 |
80 |
|
100 |
|
|
注:1.目前BXF型铜芯只生产≤95mm2规格。
2.表中代号G为焊接钢管(又称“低压流体输送用焊接钢管”),管径指内径(GB3092-82《低压流体输送焊接钢管》),DG为电线管,管径指外径(GB3640-83《普通碳素钢电线套管》)。
3.括号中管径为51mm的电线管不推荐使用,因为管壁太薄,弯曲时容易破裂。
4.表中管径适用于:直管≤30m:一个弯≤20m:二个弯≤15m:三个弯≤8m,超长应设拉线盒:或将管径放大一级。