GYXTC8S Fig 8 Unitube Armored Fiber Optic SO2 9/125 6 Core

Parameter

Test method

Test conditions

Acceptance criteria

Tensile  strength

IEC 60794-1-21-E1

As per cable maximum tensile strength (max. Working tension) in table above

After 30 minutes  the maximum strain on the fibre should not exceed 0.2% and no attenuation change throughout test

Crush

IEC 60794-1-21-E3

Short time: 10 min Long time: 120 min

Load: As per maximum crush resistance in table above

Number of positions: 3 adjacent sections (ensuring one over tube and one over lay reversal

No damage  to the sheath or to the core structure and no attenuation change throughout test

Impact

IEC 60794-1-21-E4

Weight: 1.5 kg

Height: 1.0 m

Anvil radius: 12.5 mm Impacts: 1

After 5 minutes  no fibre breaks, no damage  to the sheath or to the core structure and no attenuation change throughout test

Torsion

IEC 60794-1-21-E7

Sample length: 1 m

Rotation: a) 180º clockwise, b) return to starting position, c) 180º anticlockwise, d) return to starting position. Four movements constitute one cycle).

Complete 10 cycles (a to d) in one minute maximum

During  the final tenth cycle at a), c) and after completion (no rotation) check transmitting  fibres. No fibre breaks, no damage  to the sheath or to the

core structure and no attenuation change throughout test

Bend under tension

IEC 60794-1-21- E11

Concurrent to tensile test IEC 60794-1-21-E18A

Mandrel diameter: 30 x Cable OD Bend: 360º (1turn)

Mandrel diameter: 40 x Cable OD Bend: 360º (1turn)

No attenuation change throughout test

After 1minutenofibre breaks, no damage to thes heath or to the core structure and no attenuation change throughout test

Temperature cycling

IEC 60794-1-22-F1

Sample length: 1000 m (minimum) Temperature range:

– 10 °C to +70 °C