489-P1-HI-A20-E | GE Multilin Generator Management Relay

The 489-P1-HI-A20-E is a solid-state overload relay designed to provide reliable protection and control in demanding industrial applications. As part of the "Contactors & Starters" category, this relay is engineered to safeguard electrical systems by accurately monitoring and responding to overload conditions. With a weight of 10.76 lbs, the relay combines robust construction with advanced functionality, making it an essential component in ensuring the safety and efficiency of electrical systems.

The relay is subjected to a damped oscillation test level of 2.5KV at 1.0 MHz, ensuring its resilience against electrical noise and disturbances. This high level of immunity is crucial in environments where electrical interference could otherwise compromise the performance of sensitive equipment. The relay's ability to withstand such conditions ensures consistent operation, contributing to the overall reliability of the system it protects.

One of the key features of the 489-P1-HI-A20-E is its versatile ground overcurrent curve shapes, which include ANSI, IEC, IAC, Flexcurve, and Definite Time. These curve shapes provide a range of protection options, allowing the relay to be configured to meet specific application requirements. The flexibility in ground overcurrent protection ensures that the relay can be tailored to a wide variety of industrial settings, from basic installations to more complex systems requiring precise control and response times.

The relay can be mounted using either a panel or a 19" rack mount method, offering flexibility in installation. This dual mounting capability makes the relay suitable for integration into existing systems, whether in a new installation or as a replacement component in an existing setup. The ability to mount the relay in different configurations simplifies the installation process and provides options for optimizing space within control panels or racks.

Operating within a temperature range of -40 to 60°C, the 489-P1-HI-A20-E is designed to function reliably in extreme environmental conditions. This wide operating temperature range ensures that the relay can be deployed in diverse industrial environments, including those exposed to harsh temperatures. Whether in a freezing outdoor installation or a high-temperature industrial process, the relay is built to perform consistently without degradation in performance.

The relay has undergone rigorous production tests, including dielectric strength tests at 1.9 kV AC for 1 second or 1.6 kV AC for one minute, as per UL 508 standards. These tests validate the relay's ability to withstand high-voltage conditions, ensuring that it can maintain its integrity and protective functions even in the presence of electrical surges or faults. This level of testing provides assurance that the relay meets stringent safety and performance standards, making it a reliable choice for critical applications.

Shipping with a weight of 7.7 kg (17 lbs), the 489-P1-HI-A20-E is packaged to ensure safe transportation and handling. The substantial shipping weight reflects the relay's robust construction and the inclusion of necessary components and accessories for installation. This attention to packaging detail helps to prevent damage during transit, ensuring that the relay arrives ready for installation and operation.

The relay also features a tachometer duty cycle of greater than 10%, providing accurate monitoring of rotational speeds in motor-driven applications. This feature is particularly useful in scenarios where precise speed control is essential for the proper functioning of machinery or processes. By ensuring that the tachometer operates within this duty cycle, the relay contributes to maintaining optimal performance and preventing potential damage due to speed fluctuations.

Another critical feature of the 489-P1-HI-A20-E is its trip coil supervision trickle current, ranging from 2 to 5 mA. This function continuously monitors the health of the trip coil, ensuring that it is ready to operate when needed. The trickle current supervision helps to detect issues such as coil degradation or wiring faults, providing an early warning that can prevent a failure during critical protection events. This level of monitoring enhances the overall reliability and safety of the system, ensuring that protective actions are initiated promptly when required.

The underfrequency pickup accuracy of ±0.02 Hz ensures precise monitoring and control of frequency-related issues in power systems. This level of accuracy is crucial in applications where maintaining stable frequency is essential for the safe and efficient operation of electrical equipment. The relay's ability to detect and respond to minor frequency deviations helps to protect against potential damage caused by underfrequency conditions, thereby extending the life of connected equipment and maintaining system stability.

In summary, the 489-P1-HI-A20-E is a robust and versatile solid-state overload relay designed to provide comprehensive protection and control in industrial electrical systems. With its advanced features, including multiple ground overcurrent curve options, flexible mounting methods, wide operating temperature range, and precise monitoring capabilities, the relay is well-suited for use in a variety of demanding environments. Its rigorous testing and robust construction ensure long-term reliability and safety, making it an ideal choice for protecting critical electrical systems in industrial applications.