GE UR9AH CPU Module (Multilin UR Series)
Manufacturer: GE Multilin / General Electric
Model: UR9AH
Series: Multilin UR (Universal Relay)
Type: Central Processing Unit (CPU) Module
Function: Core processing for protection, control, and communication in UR relays
1. Overview
The GE UR9AH is the **high‑performance CPU module** for the GE Multilin UR series protection relays. It serves as the central processor executing protection logic, data acquisition, fault analysis, and communication functions. Designed for critical power system applications, it provides high‑speed processing, extensive memory, and flexible communication ports, enabling advanced protection schemes and seamless system integration.
2. Technical Specifications
• Processor: 32‑bit microprocessor, 200 MHz clock
• Memory: 128 MB RAM, 256 MB Flash
• Communication: 10/100Base‑T Ethernet, RS‑232, IRIG‑B time sync
• Protocols: IEC 61850, Modbus, DNP3, PROFIBUS
• Event Records: 1024 time‑stamped events, 64 fault records
• Power Consumption: ≤15 W (typical)
• Operating Temp: 0°C to +55°C
• Dimensions: 133 mm × 75 mm × 25 mm
• Weight: ~0.5 kg
3. Key Features
• High‑Speed Processing: 200 MHz CPU for fast protection and fault detection
• Large Memory: 128 MB RAM / 256 MB Flash for complex logic and data logging
• Multi‑Protocol Comm: Ethernet, serial, and time sync for grid integration
• Extensive Diagnostics: Event logging, fault recording, and hardware health monitoring
• Full UR Compatibility: Works with all UR series I/O and CT/VT modules
4. Applications
• Power Substations: Line, transformer, generator, and busbar protection
• Industrial Plants: Medium‑voltage motor and feeder protection
• Renewable Energy: Wind/solar farm grid‑tie protection and control
• Utility Systems: High‑accuracy metering and SCADA integration
GE © UR9AH CPU Module (Multilin UR Series)
