Description
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:
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ANSI Protection Functions:
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27: Undervoltage.
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47: Phase sequence.
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48: Lack of phase.
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50: Instantaneous phase overcurrent.
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50N: Instantaneous neutral overcurrent.
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51: Phase time overcurrent.
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51N/GS: Timed overcurrent of neutral or earth sensor.
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59: Overvoltage.
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79T/79F: Voltage/frequency reset.
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81: Frequency (subfrequency).
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86: Blocking.
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98: Oscillography and event recording.
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