GE Multilin G30U03HKH Generator Protection Relay Module

Overview

The GE Multilin G30U03HKH is a high-performance generator protection relay designed for small to medium synchronous and asynchronous generators. It provides fast, reliable protection while integrating advanced control, monitoring, and communication functions. Moreover, the modular design simplifies system expansion and maintenance, allowing flexible configuration for diverse industrial and utility applications. This relay ensures continuous generator operation and reduces downtime through precise fault detection and high-resolution event recording.

Key Features & Functional Highlights

• Comprehensive protection for generator windings, including differential and overcurrent protection.

• Advanced automation with programmable logic for custom control schemes.

• Integrated voltage, frequency, reverse power, and loss-of-field monitoring.

• Supports multiple communication protocols, including Ethernet, Modbus, DNP3, and IEC 61850.

• Local color display provides real-time visualization and simplified operator interface.

• High-resolution fault and disturbance recording supports fast troubleshooting and maintenance.

• Modular panel-mount design for industrial environments ensures durability and scalability.

Technical Specifications

• Type: Generator Protection Relay Module

• Manufacturer: GE

• Part Number: G30U03HKH

• Protection Functions:

• Generator winding differential protection

• Overcurrent, ground fault, and reverse power protection

• Voltage and frequency protection

• Loss-of-field detection

• Automation & Control: Programmable logic, breaker control, bay interlocking

• Communication Interfaces: Ethernet, RS485, Modbus, DNP3, IEC 61850

• Inputs/Outputs: Extensive digital and analog I/O options

• Power Supply: Universal AC/DC input (24–250 VDC or 90–250 VAC)

• Display: Full-color HMI for monitoring and control

• Mounting: Panel-mountable, rugged industrial construction

Typical Applications

• Small to medium steam, hydraulic, and combustion-turbine generators

• Combined generator-transformer units

• Industrial plants, utilities, and power generation facilities

• Integration into Substation Automation Systems (SAS) for centralized control

FAQ

Q: What generators can the G30U03HKH protect?
A: It protects small to medium steam, hydraulic, and combustion-turbine generators, including combined generator-transformer setups.

Q: Which communication protocols are supported?
A: The relay supports Ethernet, RS485, Modbus, DNP3, and IEC 61850 for flexible integration.

Q: Can it record fault events?
A: Yes, it provides high-resolution disturbance and sequence-of-events recording for troubleshooting.

Q: Is the module panel-mountable?
A: Yes, it is designed for rugged panel mounting in industrial environments.