Pextron URP 1439TU Relay

THE Pextron URP 1439TU Relay is a microprocessor-based digital protection device designed for applications in medium voltage systems such as primary cabins, substations and distribution panels. With multiple ANSI protection functions, MODBUS® RTU communication 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.

  • 48: Lack of phase.

  • 50: Instantaneous phase overcurrent.

  • 50N: Instantaneous neutral overcurrent.

  • 51: Phase time overcurrent.

  • 51N/GS: Timed overcurrent of neutral or earth sensor.

  • 59: Overvoltage.

  • 79T/79F: Voltage/frequency reset.

  • 81: Frequency (subfrequency).

  • 86: Blocking.

  • 98: Oscillography and event recording.