AFL EMEA's OPGW (Optical Ground Wire) fibre optic cables, designed for aerial installations in telecom, energy, and utility networks. Offering robust performance and protection in harsh environments. Founded in 1879, Prysmian has grown into a global leader in the. The OPGW fiber optic cable of supplier ZMS with high voltage higher than 110 kv has a relatively large range (usually above 250 M). Its mechanical characteristics can meet the requirements of large cable crossings. ZMS Product. We offer solutions for supporting, protecting, bundling and splicing transmission and distribution lines, as well as bolted, welded and compressed connectors for substations.