Two experimental communication cables were evaluated as part of a program to develop shipboard cables having reduced diameter and weight combined with improved resistance to heat, fire and other environmental conditions. The two cables were factory made samples similar to previous models which had been built and evaluated by the Material Laboratory. The samples consisted of 10-pair telephone cables insulated with combinations of glass, silicone resin and nylon enclosed in a vinyl jacket and aluminum armor. The results confirmed previous tentative conclusions that an acceptable degree of fire and abrasion resistance can be obtained in an insulation wall of about 13 mils thickness. Further development is required to obtain acceptable circuit identification and dielectric strength.
展开▼
