This technical specification covers the structure, mechanical, physical, electrical performance, and optical fiber requirements for Optical Fiber Composite Overhead Ground Wires (OPGW), which is made of aluminum-clad steel wire (ACS) and stainless steel tube containing optical. This technical specification covers the structure, mechanical, physical, electrical performance, and optical fiber requirements for Optical Fiber Composite Overhead Ground Wires (OPGW), which is made of aluminum-clad steel wire (ACS) and stainless steel tube containing optical. worldwide quality standards. Prysmian has a built-in multi-step quality assurance programme, which covers the entire production process from cable design and raw materials purchasing, to final inspecti tion for any single project. High quality standards for designing, testing and. @ 1310nm: (75±2mm dia. Technical Particulars of OPGW NOTE 1) - Short circuit current is based on initial/maximum temperature of 20 oC /230 oC. Furthermore this specification contains information concerning the quality assurance during manufacturing, the final accepta ce tests. CentraCore optical cable houses and protects the optical fibers within a central gel-filled stainless steel tube inside an aluminum pipe. Aluminum-clad steel and aluminum alloy wires are stranded around the central element in single or multiple layers. FIBER OPTIC CABLE Fiber Optic Cable © 2002. Optical Fiber Cable CO.