General :
This specification covers GARPE 4 optical cables with 2-12 optical fibres. This cable has a
central loose tube with up to 12 fibres, a heavy layer of glass yarns for added robustness,
tensile strength and rodent protection, a 1.8 mm black MDPE sheath completes the cable
construction. The cables have the following type designation according to DIN/VDE : A - D (ZN
= B) 2Y n, n is 2 to 12.
Cable Core:
The cable core consists of a central, jelly filled, polyester tube with the fibres contained within.
The tube is water blocked. The tuve has an outer diameter of 2.8 mm for cables with up to 12
fibres and 3.5 mm for cables with up to 12 fibres and 3.5 mm for cables with 2-12 fibres NON
METALLIC ARMOURING A 2 mm thick layer of specially treated glass fibre yarns protects the
cable core. The glass yarns contributes to the general robustness of the cable. It gives the cable
its high tensile strength and functions as redent protection, effective in most cases.
Sheath:
The cable sheath consists of a 1.8 mm thick black PE, MDPE and HDPE sheath.
The black MDPE is stabilised using 2.5% carbon black.
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