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E-mail
2306618725@qq.com
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Phone
13215491281
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Address
Liuyanma Industrial Zone, Dacheng County, Langfang City, Hebei Province
Tianjin Cable Factory Rubber Cable Factory
2306618725@qq.com
13215491281
Liuyanma Industrial Zone, Dacheng County, Langfang City, Hebei Province
|
serial number |
performance project |
unit |
Performance Requirements |
|||||
PVC/A |
PE |
WJ1 |
XLPE |
G |
F |
|||
1 |
Mechanical properties (GB/T 2951.11) Original tensile strength minimum Original elongation at break minimum Air oven aging test (GB/T 2951.12 treatment conditions) ——Temperature (deviation ± 2 ℃) ——Time Tensile strength after aging mostsmall rate of change mostbigFracture elongation after aging mostsmall rate of change maximum |
N/mm2 ﹪ ）
℃ h N/mm2 ﹪ ﹪ ﹪ |
12.5 150
100 168 12.5 ±25 150 ±25 |
12.5 150
100 168 — ±25 — ±25 |
9.0 125
100 168 — ±30 100 ±40 |
12.5 200
135 168 — ±25 — ±25 |
5.0 150
200 240 4.0 — 120 — |
16 200
240 168 14 ±30 200 ±30 |
1.1 | ||||||||
1.2 | ||||||||
2 |
Thermal extension test (GB/T 2951.21) treatment conditions ——Temperature (deviation ± 3 ℃) ——Load time ——Mechanical stress Elongation under load mostbigAfter coolingelongationmostbig |
℃ min N/mm2 % % |
— |
— |
— |
200 15 |
200 15 0.2 175 25 |
— |
|
0.2 175 15 | ||||||||
|
3 |
Anti cracking test (GB/T 2951.31) Test conditions Temperature (deviation)±3℃)time |
℃ h |
150 1 |
- |
130 1 |
— |
— |
250 6 |
4 |
High temperature pressure test (GB/T 2951.31) |
℃ |
80 |
— |
80 |
— |
— |
|
Test conditions Temperature (deviation ± 2 ℃) | ||||||||
5 |
harvestShrinkage test (GB/T 2951.13) |
mm ℃ h % |
— |
— |
200 130 1 4 |
— |
— |
|
|
Length between signs L Temperature (deviation ± 3 ℃) duration Maximum allowable shrinkage rate |
200 |
|||||||
|
100 1 4 | ||||||||
6 |
Low temperature performance test (GB/T 2951.14) conducted before aging |
℃
℃ |
-15
-15 |
— |
— |
-55
-55 |
||
Cold bending test (diameter<12.5 mm) |
-15 |
-45 |
||||||
|
Temperature (deviation ± 2 ℃) Low temperature tensile test of dumbbell padsTemperature (deviation ± 2 ℃) | ||||||||
-15 |
-45 |
|||||||
7 |
Water absorption test (GB/T 2951.13) Electrical method Temperature (deviation ± 2 ℃) duration |
℃ |
70 240 |
— |
— |
— |
— |
— |
8 |
Water absorption test (GB/T2951.13) Weight analysis method Temperature (deviation ± 2 ℃) duration Maximum weight increment |
℃ |
— |
— |
— |
85 14 1 |
— |
— |
|
d mg/cm2 | ||||||||
9 |
Acid and alkali resistance test (Appendix B) |
— |
— |
— |
— |
— |
Appendix B |
|
10 |
Corrosive (halogen-free) (GB/T 17650.2) |
μS/mm |
— |
— |
4.3 10 |
— |
— |
— |
PH value minimum | ||||||||
conductivity maximum | ||||||||
5.6.1Adopting aluminum-plastic composite tape+When weaving copper wire, the metal surface of the aluminum-plastic tape should face the copper wire weaving layer, and the overlap rate of the winding should beThe weaving density meets the requirements of 5.6.2 and 5.6.3 The requirements.
5.6.2Overlapping and wrapping one layer outside the total shielding layer is allowed 0.05mm Polyester tape or non hygroscopic material that does not melt at the maximum rated operating temperature of the cableStrip.
5.6 armor
If the user has armor requirements for the cable, the armor should comply with GB/T 2952 Standard regulations.Note: Armor is not suitable for fluoroplastic and silicone rubber insulated cables.
5.7 Cable outer protective layer
5.7.1Sheath material: The sheath should betable 7 A type of extruded solid medium listedOuter sheath materialIt should be compatible with the working temperature level of the insulation.
table 7 Sheath mixture
Sheath mixture |
code name |
The maximum temperature of the conductor during normal operation℃ |
polyethylene |
PE |
70 |
Halogen free low smoke flame-retardant polyolefin |
WH1 |
70 |
Polyvinyl chloride（PVC) |
ST1 |
70 90 |
ST2 | ||
silicone rubber |
G |
180 |
fluoroplastic |
F |
200 |
sheath thickness
Nominal thickness value of extruded sheathTS (measured in mm) should be calculated according to the following formula:
Fluoroplastic sheathTS=0.025 D+0.4 minimum thickness of 0.6mm silicone rubber sheath TS=0.035 D+1.0 minimum thickness of 1.4mm Other sheath materials: TS=0.025 D+0.9 minimum thickness of 1.0mm
in the formula ：D - The assumed diameter of the cable before the extruded sheath, in millimeters. The value calculated by the above formula should be rounded to approximately 0.1mm.
The average thickness of the sheath should not be less than the nominal thickness, and the thickness at its thinnest point should not be less than the nominal thickness85%—0.1mm
The sheath should be tightly extruded onto the cable core, and the sheath should be uniform, smooth, and round without defects. The mechanical and physical properties of the sheath comply with the table 9 the provisions
finished cable
outer diameter of cable
If the user has requirements for the upper and lower limits of the cable outer diameter, the specified values for the average upper and lower limits of the cable outer diameter shall be in accordance with the user's requirements. If the user does not have specific values, they shall follow the appendixC calculation.
The physical and mechanical properties of the insulation of the finished cable comply with the regulations 5.2.5 Requirements of the clause
The physical and mechanical properties of the finished cable sheath comply with the regulations 5.8.3 Requirements of the clause
Voltage test of finished cables. The finished cable shall not be immersed in water for the following power frequency voltage test.
For unshielded and unarmored cables, the voltage should be applied between the conductors, and the test voltage value should be 1500V；For shielded or armored cables, The voltage should be applied between the conductors and between the conductors and the shielding and armor of the grounding. The test voltage value should be1000VThe voltage should gradually increase and maintainHolding full 1 Minutes, the insulation should not break down.