Controlling SLD buttons - Arc protection - Bay control and measurement - Merging unit - Transformer protection - 2 winding - Feeder protection - Voltage regulation - Capacitor bank protection - Grid automation - Busbar differential protection (high impedance) - Line differential protection - Back-up protection - Motor protection - Busbar protection (voltage and frequency) - Interconnection protection - Generator protection - Power management/Load shedding - Operation Manual - REX615 Protection and control - PCL2 - IEC - ANSI - 30.10.2025

REX615 Operation Manual
Buttons are controlled with the Open and Close buttons like any other controllable single-line diagram objects.
  1. Select the button with and if it is not already selected.
    Figure 1. Single-line diagram with several buttons. The Parallel button is in “On” state and the Raise button is selected and it is currently in “Off” state
    The selected button has a square around it.
  2. Press or to control the selected button.
Note: The control position of the protection relay affects the controlling SLD buttons. Depending on the parameter settings, the protection relay may have to be in local state for the control to succeed.