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COMPRESSOR MOTOR PROTECTION.

Author(s) : GILBERT H. G.

Type of article: Article

Summary

A THREE PHASEMOTOR IS PARTICULARLY PRONE TO OVERHEATING DUE TO LOW SUPPLY VOLTAGE OR A LOSS OF ONE OF THE PHASE VOLTAGES THE FORMER IS COMMON WHEN OVERLOADS OCCUR ON A SUPPLY SYSTEM, THE LATTER WHEN A FUSE FAILS OR A BREAK OCCURS IN ONE SUPPLY CIRCUIT. IN BOTH SITUATIONS MOTOR TEMPERATURE INCREASES, SHORTENING WINDING INSULATION LIFE. THERMAL PROTECTION MAY ACT TOO SLOWLY TO PREVENT SERIOUS DAMAGE. A SAFE SYSTEM IS TO MONITOR PHASE VOLTAGE AND INTERRUPT SUPPLY ON A FALL IN ONE OR MORE PHASE VOLTAGES. D.W.H.

Details

  • Original title: COMPRESSOR MOTOR PROTECTION.
  • Record ID : 1991-0630
  • Languages: English
  • Source: Heat. Pip. Air Cond. - vol. 62 - n. 5
  • Publication date: 1990/05
  • Document available for consultation in the library of the IIR headquarters only.

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