صفحه Coaxial Cables necessary Data
Standard Requirements and Tests acc to JIS C -3501
|
Item |
Characteristics |
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|
Electrical resistance of inner conductor |
Not more than the value in JIS C3005 |
|
|
Dielectric strength |
To withstand the test voltage of related Table for 1 minute |
|
|
Insulation resistance |
Not less than 1000 Mohm x kM |
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|
Capacitance |
Within the range given in Related Table |
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|
Characteristic impedance |
50 Ohm type |
50 ± 2 Ohm |
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|
75 Ohm type |
75 ± 3 Ohm |
|
Velocity ratio |
for Solid PE (66 +/- 2 %) |
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Attenuation |
Maximum value shall be not more than 115 % of the standard value given in related Table |
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|
Item |
Characteristics |
||
|
Tension of insulation and sheath |
Insulation |
Tensile strength |
10 MPa (1.02 kgf/mm2) min. |
|
Elongation |
400 % min. |
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|
Sheath |
Tensile strength |
10 MPa (1.02 kgf/mm2) min. |
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|
Elongation |
200 % min. |
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|
Heating (Accelerated Aging Test) |
Insulation |
Tensile strength |
Not less than 80 % of the value before heating |
|
Elongation |
Not less than 65 % of the value before heating |
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|
Sheath |
Tensile strength |
Not less than 80 % of the value before heating |
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|
Elongation |
Not less than 80 % of the value before heating |
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Dielectric loss tangent |
6 x 10-4 max. |
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Dielectric constant |
2.2 to 2.5 |
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|
Heat shrinkage |
± 10 % |
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Cold bend |
No crack nor split shall appear |
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