Standards Development
Test method to determine the maximum allowable push force to be applied on the cable during the cable deployment by blowing
Fibre optical cables are commonly installed by a technique which uses compressed air to propel the cable into a duct. At the start of the “blowi ng”-process the cable needs to be mechanically pushed into the duct to overcome the back pressure. Especially low diameter cables, e.g. indoor cables of a diameter of only a few millimeters, are sensitive to kink when they are pushed by the caterpillar or traction wheels into the duct. When the adjusted push force is too high the cable can be severely damaged. If this max. allowable push force is specified by the cable manufacturers the installer could adjust their equipment accordingly and thus avoid damag es to the cable. Therefore a test method to determine this push force is needed.
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