Section 2 Application2.1 REL650 applicationREL650 is used for the protection, control and monitoring of overhead lines and cables insolidly or impedance grounded networks. The IED can be used up to the high voltagelevels. It is suitable for the protection of heavily loaded lines and multi-terminal lineswhere the requirement for fast one- and/or three-pole tripping is wanted. Apparatuscontrol for up to 8 apparatuses with interlocking can be included in one IED by functionblock engineering.The full scheme distance protection provides protection of power lines with highsensitivity and low requirement on remote end communication. The five zones have fullyindependent measuring and setting which gives high flexibility for all types of lines. Loadencroachment and adaptive reach compensation are included.The modern technical solution offers fast operating time of typically 30 ms.The multi-shot autoreclose includes priority features for double-breaker arrangements. Itco-operates with the synchronism check function with high-speed or delayed reclosing.High set instantaneous phase and ground overcurrent, four step directional or non-directional delayed phase and ground overcurrent, thermal overload and two step underand overvoltage protection are examples of the available functions allowing the user tofulfill any application requirement.The distance phase and ground fault protection, and the directional ground overcurrentprotection can communicate with remote end in any teleprotection communicationscheme.The advanced logic capability, where the user logic is prepared with a graphical tool,allows special applications.Disturbance recording and fault locator are available to allow independent post-faultanalysis after primary disturbances.Three packages of configured solution have been defined for following applications:1MRK 506 334-UUS A Section 2Application25Application manual
