GE UR9NH CPU Module – Central Processing Unit for Power System Protection | GE Multilin UR Series
Engineering Background
The GE Multilin UR Series is GE Grid Solutions’ flagship platform for numerical protection, control, and monitoring of electrical power systems. Deployed across transmission substations, generation facilities, and industrial switchgear worldwide, the UR platform is recognized for its modular architecture, deterministic real-time processing, and IEC 61850 compliance. The UR9NH is the central processing unit (CPU) module that serves as the computational core of the UR relay chassis, executing protection algorithms, managing inter-module communication, and interfacing with SCADA/DCS systems.
Product Positioning
The UR9NH CPU Module is engineered for procurement engineers and system integrators who require a verified, drop-in replacement or expansion processor for existing GE Multilin UR Series relay installations. It eliminates the need for full relay replacement, reducing capital expenditure and minimizing substation downtime during maintenance windows.
Complete Technical Specifications
- Part Number / SKU: UR9NH
- Manufacturer: GE Grid Solutions (GE Multilin)
- Series / Platform: UR Series (Universal Relay)
- Module Type: CPU / Central Processing Unit Module
- Form Factor: Plug-in module for UR Series chassis
- Processor Architecture: Real-time embedded processor optimized for protection relay algorithms
- Communication Interfaces: Ethernet (IEC 61850 GOOSE / MMS), RS-485 (Modbus RTU), DNP3, IEC 60870-5-104
- Protection Functions: Executes all relay protection elements defined in the UR relay order code (overcurrent, differential, distance, etc.)
- Operating Temperature: –40°C to +85°C (storage); –20°C to +60°C (operating)
- Power Supply: Supplied via UR chassis backplane
- Weight: 860 g
- Compliance / Standards: IEC 61850, IEEE C37.90, UL, CE
- Firmware: Compatible with GE Multilin EnerVista UR Setup software
- Country of Origin: Canada / USA (GE Grid Solutions manufacturing)
Proven Application Environments
- HV/EHV transmission substation protection and control panels
- Generator protection relay systems (G60, T60, L90 UR platform relays)
- Industrial motor and feeder protection switchgear
- Utility SCADA integration via IEC 61850 and DNP3
- Retrofit and life-extension projects for aging UR Series relay installations
- Redundant protection schemes requiring hot-standby CPU replacement
Engineering Advantages
- Modular Replacement: Slot-in design allows CPU swap without disturbing wiring or chassis, minimizing outage duration.
- Protocol Versatility: Native support for IEC 61850, Modbus, DNP3, and IEC 60870-5-104 eliminates protocol converters.
- Deterministic Real-Time Processing: Dedicated real-time OS ensures sub-cycle protection response times critical for power system stability.
- EnerVista Integration: Full compatibility with GE’s EnerVista UR Setup software for configuration, commissioning, and event record retrieval.
- Wide Temperature Range: Rated for harsh substation environments without additional climate control.
- Long Service Life: GE Multilin UR platform designed for 20+ year operational lifecycle with firmware upgrade path.
System Architecture & Signal Flow
Within the UR Series chassis, the UR9NH CPU Module occupies the designated CPU slot and communicates with I/O modules (analog inputs, digital I/O, communication modules) via the chassis backplane bus. The CPU executes the protection logic engine at each power system cycle, processes analog measurements from CT/VT inputs, evaluates protection element pickup and trip conditions, and issues trip/close commands to output relays. Simultaneously, it manages front-panel HMI, event recording, oscillography capture, and all external communication sessions (IEC 61850 MMS server, DNP3 master/slave, Modbus RTU).
Sourcing & Quality Verification
- Source: Konmask.com sources UR9NH modules from authorized distributors, decommissioned utility inventories, and certified refurbishment channels.
- Inspection: Each unit undergoes visual inspection, firmware version verification, and functional bench test prior to shipment.
- Authenticity: GE Multilin part markings, serial numbers, and holographic labels verified against manufacturer records where applicable.
- Packaging: Anti-static ESD packaging with desiccant; double-boxed for international freight.
- Warranty: 12-month replacement warranty against manufacturing defects.
Procurement Process
- Submit your inquiry with quantity, required firmware version (if known), and delivery timeline to support@konmask.com.
- Receive a formal quotation with lead time, unit price, and shipping options within 1 business day.
- Confirm purchase order; payment via T/T bank transfer or approved credit terms.
- Unit ships within 3–5 business days from Hong Kong warehouse; DHL/FedEx express available.
- Receive tracking number and commercial invoice / packing list for customs clearance.
Technical FAQ
Q: Is the UR9NH compatible with all UR Series relay models?
A: The UR9NH is designed for specific UR platform chassis variants. Please confirm your relay model number (e.g., C60, D60, F60, G60, L90, T60) when inquiring to ensure slot and firmware compatibility.
Q: Can the firmware be upgraded after installation?
A: Yes. GE Multilin EnerVista UR Setup software supports firmware upgrades via the front Ethernet port. Konmask can advise on the appropriate firmware version for your application.
Q: What is the lead time for the UR9NH?
A: In-stock units ship within 3–5 business days. For large quantities or specific firmware requirements, lead time is 2–4 weeks. Contact us for current stock status.
Q: Do you provide a test report or certificate of conformance?
A: Yes. A functional test report and certificate of conformance are available upon request for each unit shipped.
Q: What export documentation is provided?
A: Commercial invoice, packing list, and HS code documentation (HS 8537.10) are provided as standard. CITES, EUC, or end-user certificates available on request.
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Original Source: https://Konmask.com
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