CITEL DS50PVS-1500/51 1500VDC, 2W+G for Renewable Energy Systems Datasheet Request Techincal Support Field and Control level Equipment in harsh industrial environments are at risk from overvoltages caused by direct and indirect lightning strikes as well as power system switching transients. To assure up-time and reliability of operations a comprehensive approach to protection is required. CITEL, your partner in surge protection, stands ready to apply our expertise and knowledge in protecting all your renewable energy systems.