Relé Pextron TST

THE Pextron TST Three-Phase Supervisory Relay is a microprocessor-based digital protection device, developed for applications in three-phase electrical systems. With multiple ANSI protection functions, MODBUS® RTU communication (PST model) and robust design, it offers high reliability and ease of integration into industrial automation systems.

Main Technical Characteristics:

• ANSI Protection Functions:

  • 27: Undervoltage.

  • 47: Phase sequence.

  • 59: Overvoltage.

  • 60: Voltage imbalance.

• Inputs and Outputs:

  • Inputs for three-phase voltage measurement.

  • Relay outputs for alarm, trip and self-check (PST model).