Schneider Electric PowerLogic™ P7 Stand-Alone Merging Unit (SAMU)
The Schneider Electric PowerLogic™ P7 Stand-Alone Merging Unit (SAMU) is designed for digital substations where fast, reliable and accurate acquisition of measurement data is essential. It converts analogue signals received from current transformers (CTs) and voltage transformers (VTs) into digital sampled values, allowing protection relays and automation systems to communicate over an IEC 61850 process bus.
As substations continue to move towards digital architecture, the PowerLogic P7 SAMU simplifies wiring, improves measurement accuracy and reduces the amount of copper cabling required between primary equipment and protection devices. It provides a dependable interface between high-voltage equipment and intelligent electronic devices (IEDs), helping improve system reliability and operational efficiency.
Built on the PowerLogic P7 platform, the Stand-Alone Merging Unit supports modern communication standards, redundant Ethernet networks and advanced cybersecurity. It integrates easily with protection relays, bay controllers and SCADA systems, making it suitable for both new digital substations and retrofit projects.
Specifications
- Manufacturer: Schneider Electric
- Product Family: PowerLogic™ P7
- Device Type: Stand-Alone Merging Unit (SAMU)
- Application: Digital Substations and IEC 61850 Process Bus
- Main Function: Conversion of CT and VT analogue signals into digital sampled values
- Supported Inputs: Current Transformer (CT) and Voltage Transformer (VT)
- Communication Standard: IEC 61850-9-2 Sampled Values
- Communication Protocols: IEC 61850 Edition 2, GOOSE Messaging
- Ethernet Communication: Dual Ethernet Ports
- Ethernet Redundancy: PRP and HSR
- Time Synchronization: IEEE 1588 PTP
- Event Recording: Supported
- Diagnostics: Self-monitoring and device diagnostics
- Cybersecurity: Role-based access control, secure communication and audit logging
- Mounting: Panel mounting
Features
- Converts analogue CT and VT signals into digital sampled values.
- Supports IEC 61850 process bus architecture.
- Reduces conventional copper wiring inside substations.
- High-speed communication for protection and automation systems.
- PRP and HSR Ethernet redundancy for improved network availability.
- IEEE 1588 PTP time synchronization for precise data accuracy.
- Integrated diagnostics for continuous device monitoring.
- Easy integration with protection relays, bay controllers and SCADA systems.
- Built-in cybersecurity features for secure operation.
- Compact design suitable for new installations and retrofit projects.
Applications
- Digital substations
- Utility transmission substations
- Distribution substations
- IEC 61850 process bus systems
- Power generation facilities
- Renewable energy substations
- Industrial power systems
- Smart grid infrastructure
- Oil and gas facilities
- Critical electrical networks
The Schneider Electric PowerLogic™ P7 Stand-Alone Merging Unit (SAMU) provides accurate signal acquisition and dependable communication for modern digital substations. Its support for IEC 61850 process bus, redundant Ethernet and advanced diagnostics helps utilities and industries build efficient, scalable and future-ready power systems.
