1. Electric welding machine cable
Electric welding machine cables are all single-core, and the conductors are all oxygen-free copper. The copper wire is twisted into strands, and then multiple strands are twisted into conductors, so the cable body of the electric welding machine is thicker, and there are hundreds of copper wires. The conductor is covered with a heat-resistant polyester film for insulation. The cable of type YH, the insulation and sheath are combined into one layer, the thickness is thicker than 1.8mm, and the material is natural rubber mixture; the cable of type YHF has two kinds of covering layers, one is a mixture of neoprene, the other is a mixture of neoprene It is insulated with rubber compound and sheathed with neoprene compound.
The specifications and models of the commonly used electric welding machine cables are 16 square, 25 square, 35 square, 50 square, 70 square, 95 square, 120 square and so on.
Second, the characteristics of the electric welding machine cable
(1) The YH cable works under the condition of low voltage (the highest voltage is 200V) and high current, Some patience is required.
(2) The long-term allowable working temperature of the welding wire and cable should not exceed 65℃.
(3) The motor lead wire and cable are frequently moved, twisted and released, requiring softness and good bending performance.
(4) It is easy to be scratched and rubbed by sharp steel components during deployment, so the cable insulation is required to have good mechanical properties such as tear resistance and wear resistance.
(5) The use of environmental conditions is complex, such as sunlight, water boiling, contact with muddy water, engine oil, acid-base liquid, etc., and requires certain weather resistance, oil resistance, and solvent resistance.
(6) Sometimes hot welding parts are encountered, and good thermal deformation resistance is required.
(7) Frequent movement requires small outer diameter and light weight. Due to the low requirements for the electrical performance of this kind of cable and the complex use environment conditions, it is not suitable to meet various complex environmental factors in the structure. When using, pay attention to improving the conditions of use to prevent external damage.
Three, the meaning of letters in common wire and cable models
1, category, purpose code
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A-installation wire, B-insulated wire, C-marine cable, K-control cable, N-agricultural cable, R-flexible wire.
U-mine cable, Y-mobile cable, JK-insulated overhead cable, M-coal mine, ZR-flame-retardant, NH-fire-resistant.
ZA-A flame retardant, ZB-B flame retardant, ZC-C flame retardant, WD-low smoke halogen free type.
2, conductor code
T-copper wire, L-aluminum core.
3, insulation code
V—PVC plastic, YJ—XLPE insulation, X—rubber, Y—poly Vinyl material, F-polytetrafluoroethylene.
4, sheath code
V-PVC sheath, Y-polyethylene material, N-nylon sheath, P-copper wire braided shield, P2-copper tape shield, L-cotton yarn braided with wax coating, Q-lead package.
5, Feature Code
B-Flat, R-Soft, C-Heavy, Q-Light, G – High voltage, H-for electric welding machine, S-twisted pair type.
6, armor layer code
2—double steel strip, 3—fine round steel wire, 4—thick circle steel wire.
7, outer sheath code
1—fiber layer 2—PVC sleeve 3—PE sleeve
4. Examples of common electrical equipment wire and cable and power cable models
VV—copper core PVC insulated PVC sheathed power cable
VLV—Aluminum core PVC insulated PVC sheathed power cable
YJV22—Cu core XLPE insulated steel tape armored PVC sheathed power cable
KVV—PVC insulated PVC sheathed control cable
227IEC 01 (BV)—abbreviated as BV, general purpose single-core rigid conductor unsheathed cable
227IEC 02 (RV)—abbreviated as RV, general purpose single-core flexible conductor unsheathed cable
227IEC 10 (BVV)—abbreviated as BVV, light-duty PVC sheathed cable
227IEC 52 ( RVV)—abbreviated as RVV, light-duty PVC sheathed cord
227IEC 53 (RVV)—referred to as RVV, common polyvinyl chloride sheathed cord
BV—copper core poly Vinyl chloride insulated wire
BVR—copper core PVC insulated flexible cable
BVVB—copper core PVC insulated PVC sheathed flat cable
JKLYJ—XLPE insulated overhead cable
YC, YCW—heavy-duty rubber-sheathed flexible cable
YZ, YZW—medium-duty rubber-sheathed flexible cable
YQ , YQW—light rubber sheathed flexible cable
YH—electric welding machine cable
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