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

Description

The 489-P5-LO-A20-E is a multifunctional generator management relay from the Multilin 489 series, designed for induction or synchronous generators. It integrates comprehensive protection, control, and monitoring functions to track generator operating status in real time, triggering alarms or protective actions during abnormal conditions to prevent equipment damage. Key technical specifications include a 5A phase CT secondary, with LO control power ranging from 20-60 VDC and 48-62 VAC at 20-48 Hz, and an input voltage range of 20-60 VDC or 20-48 VAC. It supports operating frequencies of 25 Hz, 50 Hz, or 60 Hz, with a frequency parameter range of 0.00 to 90.00 Hz, a neutral voltage parameter range of 0 to 25000 V, and a power factor parameter range of 0.01 to 1.00 leading/lagging. The relay features a 4-20 mA analog output, 240 W power rating, and 10 A output current, plus support for RS232, RS485, and Modbus communication protocols. Its front panel includes a 40-character display, status LEDs, input buttons, a numeric keypad, input ports, and an LCD screen for viewing values, diagnostics, and setpoints. With an IP65 protection rating, it measures 21.6 cm x 22.6 cm x 25.2 cm, weighs approximately 10 kg, and supports panel or rail mounting, making it suitable for power systems and industrial automation applications.