489-P5-LO-A20 | GE Multilin Generator Management Relay

The 489-P5-LO-A20 is a robust and reliable Meter Relay designed for precise generator management, protection, and monitoring in electrical systems. Categorized under Electrical Products, this device is an essential component for safeguarding generators and ensuring their optimal performance. With a weight of 22.05 lbs, the 489-P5-LO-A20 is engineered to provide comprehensive control and protection functions, making it a crucial part of any generator management system.

This meter relay is equipped with advanced features to handle the complexities of generator management. It includes 489 Sensor Supply digital inputs, which operate at 24 VDC with a maximum current of 20 mA. These inputs are critical for monitoring and processing various signals, ensuring that the relay can respond effectively to different operating conditions and trigger the appropriate protective actions when necessary.

One of the key features of the 489-P5-LO-A20 is its Field Breaker Discrepancy Elements, which are configured to trip in the event of a discrepancy. This functionality is vital for protecting the generator from potential damage caused by field breaker faults. The trip function ensures that the generator is quickly isolated from the system in case of an anomaly, preventing further complications and maintaining the safety of the entire electrical setup.

Ground Directional Timing Accuracy is another critical specification of the 489-P5-LO-A20, with an accuracy of ±100 ms. This precise timing capability allows the relay to accurately detect and respond to ground faults, ensuring that the system is protected from potentially damaging conditions. The ability to detect and respond to ground faults with such precision is crucial in maintaining the reliability and safety of the generator and the overall electrical network.

The relay also features a Negative Sequence Overcurrent Time Delay, adjustable from 0.1 to 100.0 seconds in steps of 0.1 seconds. This flexibility allows for fine-tuning of the relay's response to overcurrent conditions, ensuring that the system can be tailored to meet specific operational requirements. The ability to adjust the time delay ensures that the generator is protected from overcurrent conditions without compromising on operational efficiency.

The Neutral Voltage Input Conversion Range of the 489-P5-LO-A20 spans from 0.005 to 1.00 times the full scale. This range allows the relay to accurately convert and process neutral voltage inputs, ensuring that the generator's voltage levels are monitored and maintained within safe operating limits. Accurate monitoring of neutral voltage is essential for preventing potential issues such as unbalanced loads or voltage instability, which could lead to generator damage or operational inefficiencies.

Overcurrent Alarm Timing Accuracy is another critical feature of this meter relay, with an accuracy of ±0.5% of the total time. This high level of accuracy ensures that the relay can reliably trigger alarms in the event of overcurrent conditions, providing early warning of potential issues and allowing for timely intervention. The precise timing of overcurrent alarms is essential for preventing damage to the generator and associated equipment, thereby enhancing the overall reliability of the electrical system.

The Phase Differential Pickup Level of the 489-P5-LO-A20 can be set between 1.01 to 1.50 times the rated voltage, in steps of 0.01. This feature allows for precise detection of phase differential conditions, which is critical for maintaining the stability and safety of the generator. By accurately detecting phase differentials, the relay helps to prevent issues such as phase imbalances or faults that could compromise the generator's performance.

In summary, the 489-P5-LO-A20 Meter Relay is a highly sophisticated and reliable device designed for the protection and management of generators in electrical systems. Its advanced features, including precise digital inputs, ground directional timing accuracy, adjustable overcurrent time delay, and phase differential pickup level, make it an indispensable tool for ensuring the safety and efficiency of generator operations. Whether used in industrial, commercial, or utility applications, the 489-P5-LO-A20 provides the robust protection and control needed to maintain the integrity of critical power generation systems.