GE SR489-P5-LO-A20-E is a generator management relay produced by GE Multilin. The following is a detailed introduction to the product:
1、 Basic Overview
manufacturer: GE Multilin。
Product Code: SR489-P5-LO-A20-E。
Product type: 489 generator management relay.
2、 Main features
High quality and long life: SR489-P5-LO-A20-E is made of high-quality materials and advanced processes, with high reliability and long life, and can work stably in various harsh environments.
Comprehensive protection function: This relay has multiple protection functions, such as overload protection, short circuit protection, undervoltage protection, overvoltage protection, etc., to ensure the safe operation of the generator under various working conditions.
Programmable: Supports remote upgrades and programming, allowing users to customize settings according to their actual needs, achieving more precise control and protection.
Multiple input and output options: Provides rich input and output interfaces, such as RTD input, output relays, RS485 communication ports, etc., for easy connection and communication with other devices or systems.
Display screen and front panel: A 40 character display screen that allows users to view value messages, diagnostics, and setpoints. The front panel includes a numeric keypad, status indicator lights, value up and down keys, RS232 port interface, and control and programming keys, including reset key, enter key, menu key, menu up key, and menu down key, allowing control without connecting to an external computer.
3、 Technical specifications
Current input: P5=5A phase CT secondary.
Power options:
Direct current (DC): 24-60V.
Communication (AC): 20-48V@48-62Hz .
Analog output: A20=4-20mA analog output.
Dimensions: 21.6cm in length, 22.4cm in width, and 25.2cm in height.
Shipping weight: 10 kilograms.
4、 Rear panel interface
RTD input: 12, programmable on site.
Output relays: 6.
Communication ports: 2 RS485 communication ports, supporting Modbus RTU or DNP 3.0 protocol (or both) up to 19200bps.
VT input: 4.
Analog input/output: 4 isolated 4-20mA analog inputs and outputs.
Numerical input: 7 assignable numerical inputs.
CT input: 7, used for three-phase output/three-phase neutral line and grounding current detection, as well as a separate safety and filter grounding.