Schneider Electric PowerLogic™ P3G30 Generator Protection Relay

The Schneider Electric PowerLogic™ P3G30 Generator Protection Relay is designed to provide reliable protection, control and monitoring for medium and large generators used in industrial plants, power generation facilities and utility substations. It combines comprehensive generator protection functions with measurement, automation and communication capabilities in a single numerical relay.

Generators operate under varying load conditions and are exposed to electrical faults that can affect both the machine and the connected network. The PowerLogic P3G30 continuously monitors generator performance and responds quickly to abnormal conditions such as overloads, earth faults, overvoltage, undervoltage, frequency variations and reverse power. Fast fault detection helps minimise equipment damage while improving system availability.

The relay is built for easy integration with modern automation systems and supports both serial and Ethernet communication. Its programmable logic, event recording and user-friendly interface simplify commissioning, operation and maintenance, making it suitable for both new installations and upgrade projects.

Specifications

• Manufacturer: Schneider Electric
• Product Family: PowerLogic™ P3
• Model: P3G30
• Relay Type: Generator Protection Relay
• Protection Application: Medium and Large Generators
  Protection Functions: Phase Overcurrent, Earth Fault, Thermal Overload, Reverse Power, Overvoltage, Undervoltage, Overfrequency, Underfrequency, Negative Sequence Overcurrent, Loss of Excitation, Breaker Failure Protection and Voltage-Based Protection
• Generator Monitoring: Supported
• Communication Protocols: IEC 61850 Edition 1 & Edition 2, Modbus, DNP3 and IEC 60870-5-103
• Communication Interfaces: Serial and Ethernet
• Circuit Breaker Control: Integrated
• Human Machine Interface: LCD Display with Programmable Function Keys and LED Indications
• Event Recording: Supported
• Fault Recording: Supported
• Disturbance Recording: Supported
• Programmable Logic: Supported
• Time Synchronization: Supported
• Mounting: Flush Panel Mounting

Features

• Dedicated numerical relay for generator protection applications.
• Protects generators against electrical and operational faults.
• Reverse power protection helps prevent generator motoring.
• Thermal overload protection improves generator reliability.
• Monitors voltage, frequency and phase conditions continuously.
• Integrated overcurrent and earth fault protection.
• Built-in breaker failure protection and programmable logic.
• Event, fault and disturbance recording for detailed fault analysis.
• Supports IEC 61850, Modbus, DNP3 and IEC 60870-5-103 communication protocols.
• Easy integration with SCADA, DCS and substation automation systems.
• User-friendly HMI with programmable function keys and LED indicators.
• Suitable for both new installations and retrofit applications.

Applications

• Power generation plants
• Diesel generator systems
• Gas turbine generators
• Hydroelectric power stations
• Industrial captive power plants
• Utility substations
• Renewable energy power generation
• Mining operations
• Oil and gas facilities
• Critical infrastructure and standby power systems

The Schneider Electric PowerLogic™ P3G30 Generator Protection Relay provides dependable protection and continuous monitoring for generator installations. Its comprehensive protection functions, flexible communication options and straightforward operation help improve generator reliability while reducing the risk of unexpected shutdowns.