CAT7A

REFERENCE STANDARD

UL444、UL1581、UL1666、IEC60332-1、 IEC60332-3-24、EN50399

TEST STANDARD

ISO/IEC11801、IEC61156-5

PHYSICAL PARAMETERS

Conductor: 

solid bare copper, 0.58 ± 0.005mm 

Insulation material: 

skin foam skin polyethylene 

Insulation diameter: 

1.35 ± 0.05mm 

Wire pair shielding: 

aluminum foil 

Braided shield:

tinned copper or aluminum-magnesium alloy wire, coverage rate ≥40% 

Sheath diameter: 

7.9 ± 0.5mm 

Sheath material: 

PVC or LSZH low smoke halogen-free (according to different jackets), in line with RoHS and REACH requirements 

Working temperature: 

-30 ℃ to 50 ℃ (LSZH)

MECHANICAL PARAMETERS

Tensile strength before aging: 

≥13.5Mpa (PVC), ≥10.0Mpa (LSZH low smoke halogen-free) 

Elongation before aging: 

≥150% (PVC), ≥125% (LSZH low smoke halogen-free) 

Aging time: 

100 ℃ × 24 hours × 7 days 

Tensile strength after aging: 

≥12.5Mpa (PVC), ≥8Mpa (LSZH low smoke halogen-free) 

Elongation after aging: 

≥125% (PVC), ≥100% (LSZH low smoke halogen-free) 

Cold bending (-20 ± 2 ℃ × 4 hours): 

8 times the outer diameter of the cable without cracking

ELECTRICAL PARAMETERS

Transmission delay difference: 

≤25ns / 100m 

Transmission speed: 

74% 

Unbalanced capacitance to ground: 

maximum 330pf / 100m 

DC resistance: 

Maximum 9.5Ω / 100m 

DC resistance unbalance: 

max 2%