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Voltage faults are a common threat to three-phase motors and equipment. Problems like phase loss (also known as phase failure), unbalance, and voltage variations—under voltage or over voltage—can cause serious damage if not detected and resolved in time. These failures not only compromise the efficiency of the equipment but can also lead to irreparable damage, including burning the motor. To protect them, it is necessary to have advanced monitoring and protection systems that prevent costly interruptions and motor damage.
Main Voltage Failures Affecting Motors and Equipment:
- Phase Loss (Phase Failure): Occurs when one of the phases in the three-phase system is interrupted or has a discontinuity, causing an imbalance in the motor’s operation. If not disconnected quickly, the motor can burn out due to overheating caused by the unbalance of loads.
- Voltage Unbalance: This failure occurs when the voltages in the three phases are not equal, leading to an increase in the currents flowing through the motor. This generates dangerous overheating that can reduce the equipment’s lifespan or cause permanent damage, including burning the motor.
- Under Voltage: When the voltage drops below the levels necessary for the motor’s normal operation, it may operate inefficiently, lose power, or even stop functioning. Under voltage also generates additional heat, accelerating equipment wear or permanently damaging the motor.
- Over Voltage: Excess voltage in electrical systems is equally harmful. Over voltage can cause overloads that damage the coils and other internal components of the motor, shortening its lifespan and increasing the risk of failures.
- Phase Reversal (Incorrect Phase Sequence): Occurs when the motor’s power supply phases are connected in the wrong order, causing the motor to rotate in reverse. This can cause severe mechanical damage, especially in equipment designed to rotate in only one direction.
Protection Solutions: Use a Three-Phase Monitor Relay
To prevent these failures from damaging motors and other electrical equipment, it is essential to have advanced protection systems like the Fasealert-3 voltage monitoring relay. This device is a voltage protection relay designed to continuously monitor three-phase voltage, detecting any anomalies in real-time and protecting the equipment from severe faults.
Features of the Fasealert-3:
- Protection Against Under Voltage and Over Voltage: Ensures that motors operate within safe voltage levels, avoiding the risk of overheating or malfunction.
- Protection Against Voltage Unbalance and Phase Loss (Phase Failure): Instantly detects unbalances or phase failures to prevent the motor from being damaged or burning out.
- Adjustable Delays: Customize response times to adapt to the specific needs of the system.
- Fault Indication: Visually notifies detected faults to facilitate quick diagnostics.
- Illuminated LCD Screen and Fault Memory: The digital model of the Fasealert-3 allows real-time voltage viewing and stores data on recorded faults for later analysis.
Models of the Fasealert-3
The Fasealert-3 is available in three versions to suit different protection needs:
- Standard F3: Provides basic protection against under voltage, phase loss (phase failure), unbalance, and phase reversal.
- Plus F3P: Adds protection against over voltage and adjustable delays.
- Digital F3D: This model includes all advanced features, such as an LCD screen, fault memory, and data logging, ideal for systems that require detailed monitoring and precise control.
If you are looking for maximum protection for your equipment, we recommend the Fasealert-3 Digital, which has all the necessary features to ensure the safety and proper functioning of your motors.
To explore the different models and choose the one that best suits your needs, you can visit the complete category of the Fasealert-3.
Finally, for more information about the operation of the Fasealert-3 and how it can protect your equipment, we invite you to watch this demonstrative video.