Securely transfer contacts through a high-speed IEEE C37. Use the SEL-2595 Teleprotection Terminal to send and receive up to eight relay contacts directly over a pair of optical fibers or through a digital T1 or SONET multiplexer. Rapid Fault Clearing— Take advantage of. Protection equipment in conjunction with communication links provides the best possible means of selectively isolating faults on high voltage transmission lines, transformers, reactors, and other important items of electrical plants. At present, o tical fiber protection channel is widely used in many parts in China. It also has some problems, such as leakage of immature technology, lack of syn-c ronous optical transmission signal protection performance. Working Group H9 of the IEEE Power System Relaying Committee Gary Michel Chairman, Greg Pleinka Vice Chairman, Mark Adamiak, Ken Behrendt, Doug Dawson, Ken Fodero, William Higinbotham, Gary Hoffman, Chris Huntley, Bill Lowe, Jerry Johnson, Ken Martin, Tim Phillippe, Roger Ray, Mark Simon, John. The 400G OSFP optical transceiver has emerged as one of the most important solutions for enabling ultra-high-bandwidth connectivity in modern networks. Functions: In- Outputs: Measuring valves: Technical data:.