Identifying product - 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 - Relay Retrofit Program: SPACOM to REX610 - PCL4 - IEC - ANSI - 16.02.2023

REX640 Installation Manual

  1. Locate the protection relay's order number on the label attached to the protection relay's case.
  2. Compare the protection relay's order number with the ordering information to verify that the received product is correct.