Connecting protection communication - Arc protection - Auto synchronization - Bay control and measurement - Merging unit - Transformer protection - 2 winding - Feeder protection - Voltage regulation - Capacitor bank protection - Petersen Coil control - Grid automation - Busbar differential protection (high impedance) - Back-up protection - Motor protection - Busbar protection (voltage and frequency) - Transformer protection - 3 winding - Interconnection protection - Generator protection - Power management/Load shedding - Installation Manual - REX640 Protection and control - Relion Protection and Control - PCL4 - IEC - ANSI - 16.02.2023

REX640 Installation Manual

Port X6/LD of the communication module is used for protection communication connection. As the optional SFP transceiver is not attached to the port at the time of delivery, it needs to be installed to port X6/LD if protection communication is used.

  1. Remove the dust cap from port X6/LD to expose the SFP socket.
  2. Plug the SFP transceiver into the socket and ensure that the transceiver is seated and latched properly, that is, the locking lever is on the upper position.
  3. Remove the dust cap of the SFP transceiver.
  4. Connect the fiber-optic cable to the SFP transceiver.
    Note: Do not remove the dust cap from the SFP transceiver if the fiber-optic cable is not immediately connected to the SFP transceiver.