RESISTANCE TESTING METHOD OF OPTICAL CABLE ACTION freezing water in a protective plastic pipes

摘要

Test Method resistance of the optical cable (OK), the action of freezing water, comprising the steps that a sample OK paving inside a steel tube segment such that the ends OK out of a steel pipe, steel pipe at the ends are sealed and filled with distilled water, then the sample is OK filled with distilled steel water pipe is placed in a climatic chamber through which the gateway sample output ends OK to optical fibers (OB) is connected a measuring instrument, and control their attenuation, the temperature in the climate Amer changed in accordance with the schedule, according to which withstand sample OK filled with distilled water, the steel pipe at low negative temperature until the freezing point of water in steel pipe, control the damping OM during the test and it is believed that the sample OK withstood the test, if the change OM attenuation not exceeds a predetermined threshold value, characterized in that the sample pre-OK is conveyed in a protective polymeric conduit (PTA) so that the ends OK out of PTA, PTA ends germetiz iruyut and PTA filled with distilled water, the sample is OK in water-filled PTA paving inside a steel tube segment such that the ends OK out of steel tube inside a steel pipe near PTA laid damping polymeric tube, a first end of which is sealed, and a second output from a steel pipe , the steel pipe is sealed at both ends and filled with distilled water, the sample OK filled with distilled water and PTA steel pipe placed in a climatic chamber through which the gateway sample output ends OK