Transcription of Motor Starter Protection - Electrical Sector
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Motor Starter Protection - Electrical Sector
161 2005 Cooper BussmannMotor Starter ProtectionMotor controllers are highly susceptible to damage due to short circuits. Evenfor moderate or low-level faults, extensive damage may occur if the short circuit protective device is not carefully selected. The most vulnerable partsare the Starter contacts and heater elements. Fault currents can weld the contacts and cause the heater elements to vaporize or be critically metalized vapors from such damage then can initiate further starterdestruction in the , after a fault, no apparent damage is visible ( , the contacts are notwelded and the heater elements are not burnt up).
162 ©2005 Cooper Bussmann Five Choices — 1 Solution IEC Motor Starter Protection Five methods of providing motor starter overcurrent protection are delineated in the five examples that follow.
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