Accession Number : ADP005252

Title :   An Efficient Optical Fiber Cable Installation System Using Self-Controlling Cable Pullers,

Corporate Author : NIPPON TELEGRAPH AND TELEPHONE CORP TSUKUBA SCIENCE CITY (JAPAN) TSUKUBA ENGINEERING DEVELOPMENT CENTER

Personal Author(s) : Watanabe,Takanobu ; Mitsuke,Hitoshi ; Enami,Makoto

Report Date : NOV 1986

Pagination or Media Count : 5

Abstract : In this paper, an efficient cable installation system using self-controlling cable pullers is discussed. This system is based on a computer simulation carried out to identify the cable installation system most cost efficient for conduits. These simulation results indicate that a distributed cable pulling system with a pulling force of 200 kgf can reduce cable line construction (installation and jointing) costs below that of one-end cable pulling systems. Up until now, an optical fiber cable puller with a pulling force of 200 kgf has been employed in NTT's distributed cable pulling system. Now, a self-controlling puller is being developed to improve this present puller operation. This newly developed puller can control its own pulling force and speed as well as automatically adjust the clearance between its two rubber caterpillars which arises from differences in rope or cable diameters. Its additional features of smaller size and lighter weight make it possible to set up the puller in manholes more easily. Consequently, the distributed cable pulling system employing newly developed self-controlling pullers at present appears to be the most efficient system for installing optical fiber cables in conduits. (Author)

Descriptors :   *CABLES, *FIBER OPTICS, CONTROL SYSTEMS, PULL TESTS, INSTALLATION, JAPAN

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE