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    phase failure

    Abstract: voltage monitoring relay IU11D1 en 60721-3-3 phase sequence protection fast reverse recovery time of LED
    Contextual Info: 3-phase voltage monitoring relay EMR IU11D1, IU21D1 • Voltage monitoring in 3-phase mains • Measuring range 400/230 Vac 3Ph • Monitoring of phase sequence and phase failure • Monitoring of asymmetry • Connection of neutral wire optional • 1 or 2 change-over contacts


    Original     		iu11d1iu21d1phase failurevoltage monitoring relay+3en 60721-3-3phase sequence protectionfast reverse recovery time of led PDF