Protective Relays and Monitoring Relays from RS Components, Ltd.


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Standstill recognition for 3-phase and single-phase asynchronous motors, e.g. for safety door lock releases on machine tools or for activating parking brakes. The BD5936.17 measures the induced voltage of the slowing motor at two terminals on the stator winding. No initiator etc. is necessary. Frequency converter-driven motors cannot be monitored with these devices due to the leakage currents from their power semiconductors.
Wire breakage detection in the measurement circuit. Positively driven output contacts: 2 NO, 2 NC for 250 Vac. LED displays for motor standstill, wire breakage and operating voltage. Overall width 45 mm
Monitoring Application = Standstill
Supply Voltage = 230 V
Contact Configuration = DPDT
Width = 45mm

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