1．Cable
technical parameters
(1). Rated voltage of mineral
insulated cables：light load (BTTQ，BTTVQ， WD-BTTYQ) 500V and heavy load (BTTZ，BTTVZ，WD-BTTYZ）750V;
(2). Test voltage for mineral
insulated cable: light load 2000V/1min, heavy load 2500V/1min;
(3). The insulation resistance of
MICC cable should be above 1000MΩ.
When the cable length is below 100m, the insulation resistance should be above10000MΩ;
(4). Long-term working temperature of
mineral insulated copper cable: the long-term working temperature of MICC is 70°C, and the long-term working temperature is 105°C without human interference, and in special high
temperature occasions, the long-term working temperature can be 250°C and below. At 950-1000°C
can continue to power supply for more than 3h, short or severely short working
temperature can reach 1083°C;
(5). Bending radius: The minimum
allowable bending radius of mineral insulated cables meets the requirements of
the following table.
|
External Diameter of the cable(mm)
|
D<7
|
7《D<12
|
12《D<15
|
D》15
|
|
Minimum Curve Radius
|
2D
|
3D
|
4D
|
6D
|
Mineral insulated copper cable
datasheet
|
Model
|
Number of Cores
*Standard Cross Section Size
|
Outer diameter
|
Rated Current
Capacity
|
Cross Section Size
of Copper Sheath
|
Maximum
Length
|
Gross Weight
|
|
BTTQ
(BTTVQ)
(WD-BTTYQ)
|
Copper sheath
|
Plastic
sheath
|
Copper sheath
|
Plastic
sheath
|
Copper sheath
|
Plastic
Sheath
|
|
mm²
|
mm
|
mm
|
A
|
A
|
mm²
|
m
|
Kg/Km
|
Kg/Km
|
|
2*1.0
|
5.1
|
6.4
|
17.5
|
19.5
|
6
|
800
|
104
|
125
|
|
2*1.5
|
5.7
|
7
|
22.5
|
25
|
7.1
|
800
|
130
|
153
|
|
2*2.5
|
6.6
|
7.9
|
30
|
33
|
9.4
|
600
|
179
|
205
|
|
2*4
|
7.7
|
9.2
|
40
|
44
|
12.1
|
450
|
248
|
287
|
|
3*1.0
|
5.8
|
7.1
|
15
|
16.5
|
7.6
|
800
|
135
|
159
|
|
3*1.5
|
6.4
|
7.7
|
19
|
21
|
8.9
|
650
|
168
|
193
|
|
3*2.5
|
7.3
|
8.8
|
25
|
28
|
10.7
|
500
|
224
|
261
|
|
4*1.0
|
6.3
|
7.6
|
14.5
|
16
|
8.8
|
700
|
161
|
187
|
|
4*1.5
|
7
|
8.3
|
19
|
21
|
10.2
|
550
|
202
|
230
|
|
4*2.5
|
8.1
|
9.6
|
25
|
28
|
12.8
|
400
|
278
|
319
|
|
7*1.0
|
7.6
|
9.1
|
10
|
11
|
11.6
|
650
|
233
|
271
|
|
7*1.5
|
8.4
|
9.9
|
12.5
|
14
|
13.3
|
530
|
291
|
333
|
|
7*2.5
|
9.7
|
11.2
|
17
|
19
|
17.4
|
400
|
407
|
455
|
|
BTTZ
(BTTVZ)
(WD-BTTYZ)
|
1*1.5
|
4.9
|
6.2
|
30
|
33
|
5.8
|
1000
|
97
|
117
|
|
1*2.5
|
5.3
|
6.6
|
39
|
43
|
6.4
|
1000
|
116
|
137
|
|
1*4
|
5.9
|
7.2
|
51
|
56
|
7.7
|
1000
|
146
|
170
|
|
1*6
|
6.4
|
7.7
|
63
|
69
|
8.9
|
900
|
180
|
206
|
|
1*10
|
7.3
|
8.8
|
81
|
90
|
10.7
|
700
|
241
|
278
|
|
1*16
|
8.3
|
9.8
|
107
|
119
|
13.2
|
560
|
329
|
371
|
|
1*25
|
9.6
|
11.1
|
139
|
154
|
17
|
425
|
455
|
502
|
|
1*35
|
10.7
|
12.2
|
168
|
187
|
20.2
|
340
|
584
|
637
|
|
1*50
|
12.1
|
13.6
|
207
|
230
|
24.7
|
250
|
773
|
831
|
|
1*70
|
13.7
|
15.2
|
251
|
279
|
30.9
|
220
|
1022
|
1088
|
|
1*95
|
15.4
|
17.4
|
300
|
333
|
36.7
|
220
|
1315
|
1403
|
|
1*120
|
16.8
|
18.8
|
344
|
382
|
42.6
|
190
|
1604
|
1701
|
|
1*150
|
18.4
|
20.4
|
388
|
431
|
49.5
|
155
|
1950
|
2054
|
|
1*185
|
20.4
|
22.9
|
434
|
482
|
58.1
|
125
|
2360
|
2496
|
|
1*240
|
23.3
|
25.8
|
483
|
537
|
70.1
|
99
|
2993
|
3147
|
|
1*300
|
26
|
28.6
|
795
|
883
|
86.7
|
80
|
3680
|
3852
|
|
1*400
|
30
|
32.8
|
948
|
1053
|
110.8
|
60
|
4805
|
5007
|
|
2*1.5
|
7.9
|
9.4
|
23.5
|
26
|
12.5
|
560
|
230
|
270
|
|
2*2.5
|
8.7
|
10.2
|
32
|
36
|
14.6
|
480
|
284
|
327
|
|
2*4
|
9.8
|
11.3
|
42
|
47
|
17.6
|
360
|
365
|
413
|
|
2*6
|
10.9
|
12.4
|
54
|
60
|
20.9
|
300
|
459
|
512
|
|
2*10
|
12.7
|
14.2
|
74
|
82
|
26.7
|
230
|
634
|
695
|
|
2*16
|
14.7
|
16.2
|
98
|
109
|
34.1
|
170
|
871
|
941
|
|
2*25
|
17.1
|
19.1
|
128
|
142
|
43.4
|
130
|
1201
|
1299
|
|
3*1.5
|
8.3
|
9.8
|
20
|
22
|
13.6
|
550
|
260
|
302
|
|
3*2.5
|
9.3
|
10.8
|
27
|
30
|
16.1
|
440
|
332
|
378
|
|
3*4
|
10.4
|
11.9
|
36
|
40
|
19.3
|
350
|
426
|
477
|
|
3*6
|
11.5
|
13
|
46
|
51
|
23.1
|
270
|
537
|
593
|
|
3*10
|
13.6
|
15.1
|
62
|
69
|
30.3
|
200
|
768
|
833
|
|
3*16
|
15.6
|
17.6
|
83
|
92
|
38.1
|
150
|
1050
|
1140
|
|
3*25
|
18.2
|
20.2
|
108
|
120
|
47.4
|
100
|
1460
|
1564
|
|
4*1.5
|
9.1
|
10.6
|
20.5
|
23
|
15.8
|
450
|
312
|
358
|
|
4*2.5
|
10.1
|
11.6
|
27
|
30
|
18.5
|
360
|
395
|
444
|
|
4*4
|
11.4
|
12.9
|
36
|
40
|
22.9
|
300
|
519
|
574
|
|
4*6
|
12.7
|
14.2
|
46
|
51
|
26.7
|
220
|
658
|
719
|
|
4*10
|
14.8
|
16.3
|
61
|
68
|
34.4
|
170
|
927
|
997
|
|
4*16
|
17.3
|
19.3
|
80
|
89
|
45.8
|
148
|
1353
|
1455
|
|
4*25
|
20.1
|
22.6
|
104
|
116
|
56
|
124
|
1822
|
1956
|
|
7*1.5
|
10.8
|
12.3
|
14
|
15.5
|
20.7
|
260
|
444
|
496
|
|
7*2.5
|
12.1
|
13.6
|
19
|
21
|
24.7
|
240
|
562
|
620
|
|
10*1.5
|
13.5
|
15
|
12.5
|
13.5
|
26
|
180
|
638
|
703
|
|
10*2.5
|
15.2
|
17.2
|
17
|
19
|
29.7
|
150
|
836
|
924
|
|
12*1.5
|
14.1
|
15.6
|
11.5
|
13
|
32.2
|
160
|
706
|
774
|
|
12*2.5
|
15.6
|
17.6
|
15.5
|
17
|
38.1
|
150
|
907
|
997
|
|
19*1.5
|
16.6
|
18.6
|
10
|
11
|
41.6
|
120
|
982
|
1077
|
Note:(1). Metal sheath temperature
:70℃, ambient temperature: 30℃
|
Standard cross section
of conductors mm2
|
Current carrying capacity A
|
|
Two loading conductors,
two-core or single-core cables
|
Three loading conductors
|
|
Multi-core or single-core cables lined up in triangular shape
|
Single-core cables lined up in a flat array
|
|
500V
|
|
1.5
|
23
|
19
|
21
|
|
2.5
|
31
|
26
|
29
|
|
4
|
40
|
35
|
38
|
|
750V
|
|
1.5
|
25
|
21
|
23
|
|
2.5
|
34
|
28
|
31
|
|
4
|
45
|
37
|
41
|
|
6
|
57
|
48
|
52
|
|
10
|
77
|
65
|
70
|
|
16
|
102
|
86
|
92
|
|
25
|
133
|
112
|
120
|
|
35
|
163
|
137
|
147
|
|
50
|
202
|
169
|
181
|
|
70
|
247
|
207
|
221
|
|
95
|
296
|
249
|
264
|
|
120
|
340
|
286
|
303
|
|
150
|
388
|
327
|
346
|
|
185
|
400
|
371
|
392
|
|
240
|
514
|
434
|
457
|
|
300
|
782
|
748
|
879
|
|
400
|
940
|
893
|
1032
|
Note: (1). The two ends of the copper
sheath of the single-core cable in the circuit are connected to each other.
(2). For the bare
sheathed cable that is allowed to contact, its ampacity value should be
multiplied by 0.9 according to this table.
(3). MICC plastic outer sheaths or
bare cables that allow contact are laid in the air.
(4).Metal sheath temperature 105℃, ambient temperature: 30℃
|
Standard cross section of conductors mm2
|
Current carrying capacity A
|
|
Two loading conductors,two-core or single-core cables
|
Three loading conductors
|
|
Multi-core or single-core cables lined up in triangular shape
|
Single-core cables lined up in a flat array
|
|
500V
|
|
1.5
|
28
|
24
|
24
|
|
2.5
|
38
|
33
|
36
|
|
4
|
51
|
44
|
47
|
|
750V
|
|
1.5
|
31
|
26
|
30
|
|
2.5
|
42
|
35
|
41
|
|
4
|
55
|
47
|
53
|
|
6
|
70
|
59
|
67
|
|
10
|
96
|
81
|
91
|
|
16
|
127
|
107
|
119
|
|
25
|
166
|
140
|
154
|
|
35
|
203
|
171
|
187
|
|
50
|
251
|
212
|
230
|
|
70
|
307
|
260
|
280
|
|
95
|
369
|
312
|
334
|
|
120
|
369
|
359
|
383
|
|
150
|
485
|
410
|
435
|
|
185
|
550
|
465
|
492
|
|
240
|
643
|
544
|
572
|
|
300
|
973
|
947
|
964
|
|
400
|
1230
|
1136
|
1146
|
Note: (1). The two ends of the copper
sheath of the single-core cable in the circuit are connected to each other.
(2). When laying in bundles, the ampacity value of the cable does not
need to be corrected.
(3). Mineral-insulated cables, with
plastic outer sheath or bare cables that allow contact to be laid in the air.
(4).Metal sheath temperature 70℃, ambient temperature: 30℃
|
Standard cross section of conductors mm2
|
Current carrying capacity A
|
|
Two loading conductors,two-core or single-core cables
|
Three loading conductors
|
|
Multi-core or single-core cables lined up in triangular shape
|
Connected single-core cables
|
intervals are created when single-core cables are vertically installed
|
intervals are created when single-core cables are horizontally installed
|
|
500V
|
|
1.5
|
25
|
21
|
23
|
26
|
29
|
|
2.5
|
33
|
28
|
31
|
34
|
39
|
|
4
|
44
|
37
|
41
|
45
|
51
|
|
750V
|
|
1.5
|
26
|
22
|
26
|
28
|
32
|
|
2.5
|
36
|
30
|
34
|
37
|
43
|
|
4
|
47
|
40
|
45
|
49
|
56
|
|
6
|
60
|
51
|
57
|
62
|
71
|
|
10
|
82
|
69
|
77
|
84
|
95
|
|
16
|
109
|
92
|
102
|
110
|
125
|
|
25
|
142
|
120
|
132
|
142
|
162
|
|
35
|
174
|
147
|
161
|
173
|
197
|
|
50
|
215
|
182
|
198
|
213
|
242
|
|
70
|
264
|
223
|
241
|
259
|
294
|
|
95
|
317
|
267
|
289
|
309
|
351
|
|
120
|
364
|
308
|
331
|
353
|
402
|
|
150
|
416
|
352
|
377
|
400
|
454
|
|
185
|
472
|
399
|
426
|
446
|
507
|
|
240
|
552
|
466
|
496
|
497
|
565
|
|
300
|
812
|
758
|
789
|
792
|
889
|
|
400
|
965
|
913
|
933
|
938
|
1058
|
Note: (1). The two ends of the copper
sheath of the single-core cable in the circuit are connected to each other.
(2). For the bare sheathed cable that is allowed to contact, its
ampacity value should be multiplied by 0.9 according to this table.
(3). When laying with spacing, the spacing should be at least 1 cable
outer diameter.
(4).Mineral insulated cables do not
allow human contact with bare cables laid in the air.
(5).Metal sheath temperature 105℃, ambient temperature: 30℃
|
Standard cross section of conductors mm2
|
Current carrying capacity A
|
|
Two loading conductors,two-core or single-core cables
|
Three loading conductors
|
|
Multi-core or single-core cables lined up in triangular shape
|
Connected single-core cables
|
intervals are created when single-core cables are vertically installed
|
intervals are created when single-core cables are horizontally installed
|
|
500V
|
|
1.5
|
31
|
26
|
29
|
33
|
37
|
|
2.5
|
41
|
35
|
39
|
43
|
49
|
|
4
|
54
|
46
|
51
|
56
|
64
|
|
750V
|
|
1.5
|
33
|
28
|
32
|
35
|
40
|
|
2.5
|
45
|
38
|
43
|
47
|
54
|
|
4
|
60
|
50
|
56
|
61
|
70
|
|
6
|
76
|
64
|
71
|
78
|
89
|
|
10
|
104
|
87
|
96
|
105
|
120
|
|
16
|
137
|
115
|
127
|
137
|
157
|
|
25
|
179
|
150
|
164
|
178
|
204
|
|
35
|
220
|
184
|
200
|
216
|
248
|
|
50
|
272
|
228
|
247
|
266
|
304
|
|
70
|
333
|
279
|
300
|
323
|
370
|
|
95
|
400
|
335
|
359
|
385
|
441
|
|
120
|
460
|
385
|
411
|
411
|
505
|
|
150
|
526
|
441
|
469
|
498
|
565
|
|
185
|
596
|
500
|
530
|
557
|
629
|
|
240
|
697
|
584
|
617
|
624
|
704
|
|
300
|
1012
|
945
|
973
|
1026
|
1098
|
|
400
|
1197
|
1129
|
1161
|
1209
|
1312
|
Note: (1). The two ends of the copper
sheath of the single-core cable in the circuit are connected to each other.
(2). When laying in bundles, the ampacity does not need to be corrected.
(3). When laying with spacing, the spacing should be at least the outer
diameter of one cable.
(4). The correction factor at ambient air
temperature is not equal to 30°C
|
Temperature of environment ℃
|
Plastic sheath and touchable bare 70℃
|
Untouchable bare cables 105℃
|
|
10
|
1.26
|
1.14
|
|
15
|
1.21
|
1.11
|
|
20
|
1.14
|
1.07
|
|
25
|
1.07
|
1.04
|
|
35
|
0.93
|
0.96
|
|
40
|
0.85
|
0.92
|
|
45
|
0.77
|
0.88
|
|
50
|
0.67
|
0.84
|
|
55
|
0.57
|
0.8
|
|
60
|
0.45
|
0.75
|
|
65
|
|
0.7
|
|
70
|
|
0.65
|
|
75
|
|
0.6
|
|
80
|
|
0.54
|
|
85
|
|
0.47
|
|
90
|
|
0.4
|
|
95
|
|
0.32
|
|
Nominal cross section mm2
|
Voltage drop in single-phase power supply mV/A/m
|
Voltage drop in three-phase power supply mV/A/m
|
|
2 connected single-core cables
|
Multi-core cable
|
Three single-core cables
|
Multi-core cables
|
|
Triangular connected array
|
Horizontal connected array
|
Horizontal array with intervals
|
|
1
|
|
42
|
|
|
|
36
|
|
1.5
|
|
28
|
|
|
|
24
|
|
2.5
|
|
17
|
|
|
|
14
|
|
4
|
|
10
|
|
|
|
9.1
|
|
6
|
|
7
|
|
|
|
6
|
|
10
|
4.2
|
4.2
|
3.6
|
3.6
|
3.6
|
3.6
|
|
16
|
2.6
|
2.6
|
2.3
|
2.3
|
2.3
|
2.3
|
|
25
|
1.65
|
1.65
|
1.45
|
1.45
|
1.45
|
1.45
|
|
35
|
1.2
|
|
1.05
|
1.05
|
1.05
|
|
|
50
|
0.89
|
|
0.78
|
0.97
|
0.82
|
|
|
70
|
0.62
|
|
0.54
|
0.55
|
0.58
|
|
|
95
|
0.46
|
|
0.4
|
0.41
|
0.44
|
|
|
120
|
0.37
|
|
0.32
|
0.33
|
0.36
|
|
|
150
|
0.3
|
|
0.26
|
0.29
|
0.32
|
|
|
185
|
0.25
|
|
0.21
|
0.25
|
0.28
|
|
|
240
|
0.19
|
|
0.165
|
0.21
|
0.26
|
|
|
300
|
0.15
|
|
0.13
|
0.16
|
0.18
|
|
|
400
|
0.112
|
|
0.097
|
0.12
|
0.14
|
|
IPv6 network supported