3UG4614-1BR20 Siemens Line Monitoring Original Brand New

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Overview

Electronic line monitoring relays provide maximum protection for mobile machines and plants or for unstable networks. Network and voltage faults can thus be detected early and rectified before far greater damage ensues.

Depending on the version, the relays monitor phase sequence, phase failure with and without N conductor monitoring, phase unbalance, undervoltage or overvoltage.

Phase asymmetry is evaluated as the difference between the greatest and the smallest phase voltage relative to the greatest phase voltage. Undervoltage or overvoltage exists when at least one phase voltage deviates by 20 % from the set rated line voltage or the directly set limit values are overshot or undershot. The rms value of the voltage is measured.

With the 3UG4617 or 3UG4618 relay, a wrong direction of rotation can also be corrected automatically.

Note:

We recommend the use of SIRIUS 3UG5 line monitoring relays for new applications. They are superseding the 3UG4 devices, see SIRIUS 3UG5 monitoring relays for stand-alone installation -> Line monitoring.

Benefits

3UG4614-1BR20

Siemens 3UG5514-1BR20 phase sequence phase failure 3×160-690 V screw digital monitoring relay asymmetry 0-20% connectable phase sequence phase failure 3 x 160 to 690 V 50 to 60 Hz AC undervoltage 160-690 V hysteresis 1-20 V ON and OFF delay 0-20 s 2 changeover contacts screw terminal

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