Low voltage pvc insulated electric wire has been widely used in our country with the advantages of excellent electric properties, strong ability to resist short circuit, long service life , easy to install, operate and maintain, etc
The product of low voltage stranded pure copper 2.5mm 6mm electric cable belong to the series of laying electric wires, which is mainly suitable for laying at the fixed places, It is widely used as connectors of drive, lighting , electronic equipments , Instrument and telecommunication equipments with rated voltage 450/750v or below , Part of plastic wires are used at the equipment with A.C rated votage 300/300v or below.
Standards: ASTM / ICEA S-76-474 , IEC 60502 ,DIN, NFC 33-209 , BS 7870 GB/T 12527 etc
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The order of the sequence is also a certainty. In general, the order of the cutting trajectory lines and their orientation are the first. There is a difference between the pattern of the part cut with the inner and outer contours and the pattern of the part with the outer contour cutting only in the walking direction of the track. The setting of this cutting direction is mainly determined by the storage area of ​​the board surface; otherwise, if the board surface is cut by multiple parts material. In order to reduce the influence of thermal deformation and other factors, the board cutting sequence is arranged in accordance with the order of first small, large first, first in and then out.
All line segments are the outlines of the actual parts, in fact, the design of the cutting auxiliary line. The graphics of a part to be cut are only taken from the cutting angle. In order to make the cut parts meet the requirements of the drawings, it is necessary to add auxiliary lines related to the cutting process on the basis of the original graphics, such as the location of the fire point and the order of cutting. Therefore, it is necessary to cut the conventional graphics to make similar The design of auxiliary lines such as cutting leads is often arranged according to the part that needs to be saved.
The internal and external contour trajectory of the cutting part will have a direct impact on the final cutting quality, and the operation mode of the CNC plasma cutting machine will be considered. The so-called cutting process is based on the optimal route set by the CNC cutting torch.
Nominal section.(mm2)
conductor No./Dia (mm)
Insulated thick (mm)
Max.overall Dia. (mm)
Conductor resistance at 20'C
Weight (kg/km)
copper
aluminum
copper
aluminum
1.5
1/1.38
0.7
3.3
12.1
19.2
2.5
1/1.78
0.8
3.9
7.41
11.8
30.8
15.0
4
1/2.25
0.8
4.4
4.61
7.39
45.5
21.0
6
1/2.76
0.8
4.9
3.08
4.91
65.0
29.0
10
7/1.35
1.0
7.0
1.83
3.08
110.0
52.0
16
7/1.70
1.0
8.0
1.15
1.91
170.0
70.0
25
7/2.14
1.2
10.0
0.727
1.20
270.0
110.0
35
7/2.52
1.2
11.5
0.524
0.868
364.0
150.0
50
19/1.78
1.4
13.0
0.387
0.641
500.0
200.0
70
19/2.14
1.4
15.0
0.268
0.443
688.0
269.0
95
19/2.52
1.6
17.5
0.193
0.320
953.0
360.0
120
37/2.03
1.6
19.0
0.153
0.253
1168.0
449.0
150
37/2.25
1.8
21.0
0.124
0.206
1466.0
551.0
185
37/2.52
2.0
32.5
0.099
0.164
1808.0
668.0
With regard to the size of the kerf compensation amount, it is also necessary to finally consider the size of the kerf and the reserve amount required for subsequent processing. Need to comprehensively consider the cutting method, cutting thickness and cutting speed. In general, the flame cutting for 10mm above data and CNC plasma cutting machine for 6mm data, select the appropriate speed, the slicing width of about 2mm, the amount of its offset Can be more suitable in 1-2mm.