Mounting grounding bar kit - 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
  1. Detach the module from the protection relay.
  2. Place the grounding bar between the front plates' bendings and mount it to the front plate with M3 screws and washers.
    Figure 1. Mounting grounding bar
    image/svg+xml22332341
    1
    Module
    2
    Grounding bar
    3
    M3 screws and washers
    4
    Edge with chamfer towards the module's collar screw
  3. Tighten the M3 screws to 0.8 Nm ±5% (0.5900 ft-lb ±5%).
  4. Install the module back to the same slot in the protection relay.
    Figure 2. Installing the module
    image/svg+xml