This test applies to continuously water-blocked cables. The purpose is to determine the ability of a cable to block water migration along a specified length.
Compliance shall be checked on samples of cable using one of the two following methods (F5A or F5B), as stated in the detail specification.
Method F5A tests for water migration between the outer interstices of the optical core and the outer sheath, whereas method F5B tests for water migration over the entire cross-section designed to be water-blocked.
Procedure:
Unless otherwise specified in the detail specification, the sample shall be supported horizontally and a1 m height of water shall be applied for 24h,at a temperature of (20 ± 5) °C.
A water soluble fluorescent dye or other suitable coloring agent may be used to aid in the detection of water see page. Care should be taken in choosing a fluorescent dye that does not react with any of the cable components.
Technical Parameters:
- The water column height:φ80mm Plexiglas tube to the upper part of the outlet groove axis 1000mm;
- Water settings: 8 cables do water penetration test at the same time
- Outlet diameter: inner diameter φ30mm;
- Tanks using stainless steel welding, 8 bronze ball valve to control the water
