239-AN

About the 239-AN

GE Multilin 239-AN Motor Protection Relay Features

• Analog Output Flexibility:

  • Features a single, isolated analog output.
  • Operates on three selectable milliampere ranges: 4-20 mA, 0-1 mA, or 0-20 mA.
  • Offers programmable output parameters, including adjusting phase current temperature for RTDs 1, 2, and 3, changing thermal capacity, and modifying the percentage of the full load.
  • Crucial for applications with varied motor loads operating near full capacity, allowing users to monitor for potential trips and adjust loads accordingly.

• Start Protection Management:

  • Includes start protection, which can be disabled if not required.
  • Setting the "disable starts" setpoint to "yes" allows the relay to bypass start protection, moving directly into overload curves and applying run conditions to protect the connected load.
  • This setpoint can also be linked to a switch input; if the switch input is closed, start protection will be defeated when "disable starts" is set to "yes."

• Mechanical Jam Protection:

  • Features a "mechanical jam" programming function.
  • Primarily used for protecting attached equipment like gearboxes, saws, compressors, and pumps.
  • It's often recommended that an immediate trip occurs in the event of a locked rotor during device operation.