GE 489-P5-LO-A20 Generator Management Relay Module

GE  489-P5-LO-A20  Generator Management Relay Module

Functional Features

• Comprehensive Protection Functions: Equipped with multiple protection functions such as overload protection, short-circuit protection, undervoltage protection, and overvoltage protection, ensuring the safe operation of generators under various working conditions.

• High Reliability: Manufactured with high-quality materials and advanced processes, it can operate stably in various harsh environments and has a long service life.

• Strong Programmability: Supports remote upgrading and programming, allowing users to customize settings according to actual needs for more precise control and protection.

Performance Parameters

• Relay Parameters: With a 5A phase CT secondary, LO control power is 20-60 VDC, 48-62 VAC at 20-48 Hz, and analog output is 4 to 20 mA.

• Frequency Range: Operable at 25, 50, or 60 Hz, with a frequency parameter range of 0.00 to 90.00 Hz.

• Neutral Voltage: The neutral voltage (3rd) parameter range is 0 to 25,000 V.

• Power Factor: The power factor parameter range is 0.01 to 1.00 leading/lagging.

• Reactive Power: The reactive power (Mvar) parameter is -2.00 to 2.00 times the rated voltage.

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Display and Panel

• Equipped with a 40-character display, facilitating users to view value messages, diagnostics, and setpoints. The front panel features multiple status LEDs, input buttons, a numeric keypad, input ports, and an LCD screen, enabling users to operate and monitor the relay status conveniently.

Interface Types

• The rear panel includes twelve RTD inputs, six output relays, two RS485 communication ports, and four VT inputs. The communication ports support Modbus RTU or DNP 3.0 protocol (or both) with a maximum baud rate of 19,200 bps. Additionally, it includes four isolated 4-20 mA analog inputs and outputs, as well as seven assignable digital inputs.

Design and Installation

• Compact and small-sized, with dimensions of 21.6 cm (length) × 22.4 cm (width) × 25.2 cm (height), making it easy to install and maintain. The shipping weight is approximately 10 kg.

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Application Scenarios

Generator Protection

• Applicable to induction or synchronous generators, operable at 25Hz, 50Hz, or 60Hz. With functions such as overload protection, short-circuit protection, undervoltage protection, and overvoltage protection, it ensures the safe operation of generators under various working conditions. It is widely used in power plants, industrial self-provided power stations, and other places.

Power System Monitoring and Control

• Capable of real-time monitoring of generators and other equipment in the power system. Users can view numerical information, diagnostics, and setpoints through its display, and transmit data to other devices or monitoring systems via communication ports to achieve remote monitoring and control. It is suitable for power facilities such as substations and switchgear rooms.

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Industrial Automation

• In industrial automation environments, it ensures the safe operation of generator-related equipment and provides stable power support for industrial production. For example, in large industrial enterprises such as steel plants, chemical plants, and cement plants, it is used to safeguard the stability of internal generators and power supply systems, maintaining the normal operation of production processes.

Energy Management

• Contributes to optimizing energy transmission, distribution, and management, improving energy system efficiency. In scenarios where distributed energy projects such as wind farms and solar power stations are connected to the grid, it manages and protects generators to achieve reasonable energy allocation and efficient utilization.

Marine Power Systems

• Ships are typically equipped with generators to supply power to on-board equipment. This module is used for the protection and management of marine generators, ensuring the stable operation of marine power systems, meeting the power demand of various on-board equipment, and guaranteeing ship navigation safety and normal operation.