Continuing from the previous article, this article will explain the environmental performance parameters of optical cables.And the significance of testing, corresponding methods for each type of testing, etc.
The environmental performance parameters include the following: temperature cycle, immersion in water, drip flow, seepage, combustion, consistency of sheath at high temperature, sheath scratch resistance test, etc.
The significance of environmental performance parameters of outdoor optical cables
Temperature cycling: Consider the ability of optical cables to operate normally at the required temperature. The importance decreases in order: in special high and low temperature situations, overhead cables, pipeline cables, buried cables, and indoor cables.
Immersion: The ability of water to penetrate (pass) the sheath of a fiber optic cable.
Drip flow: The fiber paste and process performance of filled optical cables, which concerns that the fiber paste cannot be too thin at high temperatures.
Water seepage: Considering the water blocking material and process performance, it concerns whether water can enter the optical cable through the end before splicing after direct burial or pipeline construction.
Combustion: Consider the resistance of optical cables to flame propagation and the amount of smoke after combustion. Usually, the flame retardant performance of the sheath should be considered.
Consistency of sheath under high temperature: Consider the longitudinal consistency of indoor cables under high temperature.
Sheath scratch resistance test: Consider the electrical corrosion resistance performance of ADSS optical cables.