GE UR9KH CPU Module – Advanced Protection Relay Processor | GE Multilin UR Series Platform
Engineering Background: The GE Multilin Universal Relay (UR) platform is GE Grid Solutions’ flagship protection and control architecture, deployed globally in transmission substations, generation facilities, and industrial power systems. The UR series integrates protection, control, metering, and communications into a single modular chassis, reducing panel footprint while maximizing functional density.
Product Positioning: The GE UR9KH (UR 9KH) CPU Module is the central processing unit of the UR relay chassis. It executes all protection logic, manages inter-module communications, hosts the real-time operating system, and interfaces with SCADA/DCS networks. Replacing or upgrading this module directly impacts relay response time, communication protocol support, and cybersecurity compliance. Procurement engineers specify the UR9KH when upgrading aging UR-series relays or sourcing spares for critical substation assets.
Complete Technical Specifications
| Part Number | UR9KH / UR 9KH |
| Manufacturer | GE Grid Solutions (GE Multilin) |
| Product Family | UR Series – Universal Relay Platform |
| Module Function | Central Processing Unit (CPU) Module |
| Compatible Chassis | GE Multilin UR Series (C30, C60, C70, D30, D60, F35, F60, G30, G60, L30, L60, L90, M60, N60, T35, T60, etc.) |
| Processor Architecture | High-speed real-time DSP + RISC dual-core |
| Operating System | GE Multilin proprietary real-time OS (RTOS) |
| Communication Ports | Ethernet (RJ45 / SFP), RS-485, RS-232 |
| Supported Protocols | IEC 61850 GOOSE/MMS, DNP3, Modbus RTU/TCP, IEC 60870-5-104 |
| Cybersecurity | NERC CIP compliant; role-based access control |
| Protection Functions | Per UR relay model (overcurrent, differential, distance, frequency, voltage, etc.) |
| Sampling Rate | Up to 64 samples/cycle |
| Event Recording | 1024+ time-stamped events; oscillography capture |
| Power Supply Input | Via UR chassis backplane (24–250 V DC / 120–240 V AC) |
| Operating Temperature | –40°C to +60°C (–40°F to +140°F) |
| Storage Temperature | –40°C to +85°C |
| Humidity | 5–95% RH, non-condensing |
| Vibration / Shock | IEC 60255-21-1 Class II; IEC 60255-21-2 Class I |
| EMC Compliance | IEC 61000 series; CE marked |
| Weight | 860 g (approx.) |
| Form Factor | UR series plug-in module (CPU slot) |
| Firmware Upgrade | Field-upgradeable via EnerVista UR Setup software |
Proven Application Environments
- Transmission Substations: Line protection (distance, differential) in 110 kV–500 kV networks
- Generation Facilities: Generator protection (G60, G30) with synchronism-check and loss-of-field functions
- Industrial Power Systems: Motor bus protection, feeder protection in petrochemical, mining, and data center facilities
- Transformer Protection: Differential and restricted earth fault schemes (T35, T60 chassis)
- SCADA Integration: IEC 61850 substation automation and DNP3 SCADA master connectivity
- Spare Parts Programs: Critical spare for utilities maintaining UR-series relay fleets
Engineering Advantages
- Platform Universality: Single CPU module architecture spans the entire UR relay family — reduces spare inventory complexity
- IEC 61850 Native: Full GOOSE messaging and MMS reporting without external gateways
- High-Speed Protection: Sub-cycle trip times with 64 samples/cycle DSP processing
- Cybersecurity Ready: NERC CIP-007 compliant with role-based access, audit logging, and encrypted communications
- Field Firmware Upgrades: EnerVista UR Setup enables non-intrusive firmware updates without chassis removal
- Oscillography & Event Records: Integrated fault analysis tools reduce post-event investigation time
- Long Service Life: GE Multilin UR platform supported with firmware and spare parts for 20+ year asset lifecycle
System Architecture & Signal Flow
The UR9KH CPU module occupies the dedicated CPU slot in the UR chassis backplane. It receives digitized analog inputs from the DSP/CT/VT modules via the high-speed backplane bus, executes protection algorithms in real time, and issues trip/close commands to the output relay modules. Simultaneously, it manages all front-panel HMI communications, Ethernet port traffic (IEC 61850 / DNP3 / Modbus), and time synchronization (IRIG-B / IEEE 1588 PTP). Settings and event data are stored in non-volatile flash memory, ensuring retention through power loss events.
Sourcing & Quality Verification
- All units sourced from authorized distributors or decommissioned utility spares programs
- Each module undergoes visual inspection, board-level continuity check, and functional power-on test
- Firmware version verified and documented prior to shipment
- Original GE part labels, serial numbers, and date codes intact and verified
- Anti-static packaging with humidity indicator card for safe international transit
- Certificate of conformance available upon request
Procurement Process
- Confirm Compatibility: Provide your UR relay model number and current firmware version to our technical team
- Request Quote: Contact support@konmask.com or call +0086 19859288691 for pricing and lead time
- Order Placement: Purchase order accepted via this listing or direct invoice
- Quality Documentation: Test report and CoC issued with shipment
- Shipping: DHL / FedEx express worldwide; export documentation (commercial invoice, packing list, HS code 8537.10) included
- After-Sales Support: 90-day warranty; technical support for installation and commissioning
Technical FAQ
Q: Is the UR9KH compatible with all UR series relay models?
A: The UR9KH CPU module is designed for the GE Multilin UR platform. Compatibility depends on the specific relay model and firmware version. Please confirm your relay model before ordering.
Q: Can I upgrade firmware after installation?
A: Yes. GE EnerVista UR Setup software supports field firmware upgrades via the Ethernet port without removing the module from service (hot-standby configurations).
Q: What is the lead time for this module?
A: In-stock units ship within 1–3 business days. Contact us for current stock status.
Q: Do you provide a warranty?
A: Yes, all modules carry a 90-day functional warranty. Extended warranty options are available upon request.
Q: Can you supply the GE EnerVista software license?
A: EnerVista UR Setup is available as a free download from GE Grid Solutions. We can assist with configuration guidance as part of our technical support service.
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