Protection Relays for Critical Power Applications Each dedicated to a single application: S80, S81, S82, S84, T81, T82, T87, M81, M87, M88, G82, G87, G88, B80, B83, C86. A ready to use Sepam series 80 NPP includes: One base unit NPP, two 20 pin connectors, one current, two current or one current and one voltage connector (depending on the application), one memory cartridge, one application, one operating language, one Logipam firmware option, one TCP/IP option, optional modules, communication interfaces or core balance CT.