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TeSys LR97D
Electronic Over Current Relays
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TeSys LR97D

TeSys LR97D electronic overcurrent relays memberikan perlindungan terhadap rotor yang terkunci, kejang, atau guncangan mekanis. Berbeda dengan relai kelebihan beban termal, relai ini tidak memiliki memori termal. Mereka memiliki karakteristik waktu yang pasti dengan ambang arus yang dapat disesuaikan dan waktu tunda.

Fitur Utama

TeSys LR97D overload relays from 0.3 A to 38 A can be directly mounted beneath TeSys D contractors (up to LC1D38, width 45 mm) to prevent over-currents caused by overloads or mechanical jamming.

  • Screw clamp or lug connections
  • External 24 to 230 V AC power supply
  • Manual or automatic reset
  • Protection functions:
    - Overcurrents due to overload or mechanical jamming: starting and steady state operation overtorque monitoring
    - Can be used for torque surge protection
    - Specific protection for locked rotors
    - Specific protection for phase failure
  • Current threshold adjustment using 2 separate time settings (starting and trip in steady state operation)
  • Selection of 3-phase or single-phase operation
  • Diagnostics via 2 LED indicators (starting, overtorque, rotor locked and phase failure)
  • Auxiliary contact: 1 C/O

Keuntungan

Machine protection combined with motor starter

TeSys LR97D electronic overcurrent relays (or overtorque protection relays) assure optimal protection for motors and other mechanical devices, such as gear boxes.

  • Compact (45 mm wide) for easy integration into motor starter functions
  • Reduces production loss and associated downtime
  • Simple setting and signaling features