Supported SPA data - 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 - Modbus Communication Manual - REX640 Protection and control - PCL4 - IEC - ANSI - 16.02.2023

The protection relay supports general SPA data.

• The protection relay responds with its device type to SPA fiction reading (RF:).
• The protection relay responds to SPA event reading (RL:) and SPA event backup reading (RB:).
• SPA time synchronization messages are accepted and the protection relay's real-time clock can be synchronized from this source. Both WT: and WD: messages are supported.
• The protection relay accepts the WC:0 acknowledge messages from the client.