Post Box 71 02 28
D-30542 Hannover
Kronsberger Straße 25
D-30559 Hannover

Fon +49(0)511-357100-0
Fax +49(0)511-357100-19

AC Current, Asymmetry and Contact Monitor ES-USIY314

or 3-phase current monitor, AC Current relay, AC Current sensor, 3-phase current relay, Current asymmetry monitor, current asymmetry relay

  • For monitoring of stator currents of  induction motors
    as well as the contacts of  reverse poling contactors
  • Current relay for rated current range: 0,5 ... 600AW (ampere windings), f = 35...500Hz
  • Fault memory and indication for each phase
  • Switchable while in operation between AC current and contact sensor
  • Fault signalling via 2 relays (1 changer each) and one optocoupler output per phase
  • LED’s to display the state of operation
  • Mode AC current sensor
    • Delayed activation of the fault signallings (adjustable from 0 ... 3.8 sec.)
    • Fault signalling with asymmetric currents
      (permissable deviation of the phase angle adjustable from 4 ... 34 degrees) 
    •  Optionally fault signalling with incorrect phase sequence
  • Mode Contact sensor
    • Delayed activation of the fault signallings (adjustable from 0 ... 0.5 sec.)

Application Example

AC contact sensor ES-USIY314 to supervise zero position of control contactors by monitoring supply currents.
Photographic material was kindly made available by TELCAT Kommunikationstechnik GmbH, a company of Salzgitter group.