The following COMBIFLEX units are suitable for the protection of overhead lines and cables:
DISTANCE PROTECTION
RXHL/RAHL
COMBIFLEX numerical line protection for general power system applications and as back-up to 500-series terminals for all system voltage levels including EHV.
RXIDG/RAIDG
RXIDG 21H is an earth-fault relay and RAIDG is a protection assembly used as selective and sensitive earth-fault protection in EHV and HV solidly earthed transmission networks.
RXIDK/RAIDK
RXIDK 2H is a single phase microprocessor based time-overcurrent relay that is available in multi-phase and earth-fault assemblies RAIDK. The RXIDK 2H has simple setting knobs and selector-switches for different inverse and fixed time delay over-current characteristics and operate values and time delays. It is used as short-circuit and earth fault protection for all types of objects in the network.