Anomang nga Kahimtang sa Operasyon ug mga Dahon sa Induction Motors

Anomang nga mga kondisyon sa pag-operasyon ug mga butang sa Induction Motors

Gawas na gamiton ang mga three-phase induction motors sa industriyal nga aplikasyon. Ang anomang mga kondisyon sa pag-operasyon ug mga butang mahimong masumaryahan human:

Anomang mga kondisyon sa pag-operasyon ug mga butang sa Induction Motors

Ang sumusunod mao ang anomang mga kondisyon sa pag-operasyon ug mga butang sa induction motors:

Mechanical Overload

• Blockage sa Pump/Gear Systems: Obstruksyon sa mechanical systems (e.g., pumps o gears) nga gikonekta sa motor.

• Nasirang Bearings o Kaming Lubrication: Worn-out bearings o insufficient lubrication nga nag-lead sa increased friction.

• Locked Rotor o Prolonged Starting Time: A rotor nga wala maka-rotate (locked rotor) o extended starting duration tungod sa mechanical resistance.

• Motor Stalling: Inability to start tungod sa excessive load, requiring the motor to be disconnected from both the power supply and mechanical load before restarting to resolve the overload.

Anomang Supply Conditions

• Low Supply Voltage: Reduced voltage below the rated value.

• Unbalanced Supply Voltage: Uneven voltage distribution across the three phases.

• High Supply Voltage: Excess voltage exceeding the rated value.

• Low Frequency: Operating frequency lower than the motor’s rated frequency.

• Supply Circuit Faults:

• Loss of one or more phases (single-phasing).

• Short circuits in supply cables.

• Damaged contactor terminals or links.

• Blown fuses.

Internal Motor Faults

• Phase-to-Phase Faults: Short circuits occurring between stator windings of different phases.

• Phase-to-Earth Faults: Insulation failure leading to a short circuit between a phase winding and the motor’s grounded frame.

• Open Circuit: Breaks in windings or electrical connections, interrupting current flow.

• Insulation Degradation: Deterioration of winding insulation (typically tested with a megger to check continuity and resistance).