Schneider Electric PowerLogic™ MiCOM P923 Voltage and Frequency Management Relay

Schneider Electric PowerLogic™ MiCOM P923 Voltage and Frequency Management Relay is designed for power systems that need dependable voltage and frequency supervision together with control and automation functions. It is suited for schemes where system stability matters just as much as fault detection, especially in installations where load shedding, restoration logic and voltage/frequency control need to work together.

The MiCOM P923 brings several functions into one relay platform. Instead of handling voltage monitoring, frequency supervision and control logic through separate devices, the relay combines them in a single unit that can fit into both new installations and retrofit projects. This helps simplify the protection scheme and gives operators better visibility of system conditions during disturbances or abnormal operating events.

In practical use, the MiCOM P923 is suited for applications where maintaining power quality and preventing wider system instability are key priorities. It can support automatic actions during underfrequency, overfrequency or abnormal voltage conditions, and it can also assist with restoring disconnected loads once the system returns to normal. That makes it a useful relay for utilities, industrial plants and critical electrical networks where controlled system recovery is important.

Specifications

• Manufacturer: Schneider Electric
• Product Family: PowerLogic™ MiCOM
• Model: MiCOM P923
• Relay Type: Numerical Voltage and Frequency Management Relay
• Protection Application: Voltage and frequency management, load shedding and system stability control
• Main Functions: Voltage monitoring, frequency monitoring, automation logic and restoration control
• Suitable For: Utility substations, industrial power systems and network control applications
• Digital Inputs: 6
• Relay Outputs: 8
• Communication Options: RS485, Modbus and Ethernet
• Display: Backlit LCD display
• Mounting: Panel mounting / relay panel installation
• Event Logging: Fault and event recording available
• Integration: Suitable for new and existing network control systems

Features

• Voltage and frequency management relay for power system stability applications.
• Suitable for load shedding and controlled restoration schemes.
• Combines monitoring, protection, control and automation functions in one unit.
• Supports communication and integration with network control systems.
• Provides event and fault recording for easier troubleshooting.
• Helps maintain system stability during abnormal voltage and frequency conditions.
• Can be used in both new installations and retrofit projects.
• Designed for applications where controlled recovery of disconnected loads is important.

Applications

• Underfrequency load shedding schemes
• Overfrequency and abnormal frequency protection schemes
• Voltage supervision and voltage management applications
• Utility substations
• Industrial captive power systems
• Power system stability schemes
• Load restoration and demand management systems
• Network automation and control applications

Schneider Electric PowerLogic™ MiCOM P923 Voltage and Frequency Management Relay is a practical choice for systems that need more than simple voltage or frequency supervision. It supports stable operation, controlled response during disturbances and smoother restoration once normal network conditions return.