GE UR9HH UR 9HH Protection Relay CPU Module

Product Details

UR9HH UR 9HH Product Description

The GE UR9HH is a high-performance CPU module engineered for deployment within GE's Universal Relay (UR) Series protection and control platform. Designed to serve as the computational core of the UR rack-based architecture, the UR9HH delivers deterministic processing, seamless inter-module communication, and robust support for multi-function protection schemes across power generation, transmission, and distribution applications. Its architecture-first design philosophy ensures that every installation contributes to a coherent, scalable, and maintainable control system — not merely a standalone relay replacement.

The UR9HH CPU module does not operate in isolation — it is the architectural anchor of a fully integrated GE UR Series protection platform. In a complete substation automation or industrial power protection system, the UR9HH interfaces directly with the UR Power Supply Module (e.g., URH-PSU) to receive stable, conditioned DC power, ensuring uninterrupted processing even during grid disturbances. The CPU communicates across the UR backplane with dedicated I/O modules such as the UR-8AI (analog input) and UR-8DO (digital output), enabling real-time acquisition of current transformer (CT) and voltage transformer (VT) signals while simultaneously driving trip coils, alarms, and interlock relays.

For substation-level communication, the UR9HH supports peer-to-peer GOOSE messaging with adjacent UR relays — including the GE L90 Line Differential Relay, GE T60 Transformer Management Relay, and GE B90 Bus Differential Relay — forming a tightly coordinated protection zone. This inter-relay communication eliminates the latency associated with hardwired trip schemes and enables sub-cycle fault isolation across bus sections, transformer feeders, and transmission lines.

At the communication layer, the UR9HH integrates with GE MiCOM C264 substation controllers and GE Reason RT430 merging units via IEC 61850 Edition 2, enabling process bus architectures that reduce copper wiring and improve signal integrity. For legacy SCADA integration, DNP3 and Modbus TCP connectivity allows the UR9HH to report to GE iFIX SCADA or third-party DCS platforms without protocol conversion gateways.

In redundant control architectures, the UR9HH can be paired with a secondary CPU module in a hot-standby configuration, with automatic failover managed through the UR chassis backplane. This redundancy design is critical for applications in nuclear auxiliary power systems, offshore platform power management, and high-availability industrial drives protection where single-point failures are unacceptable. The UR-COMM fiber optic communication module further extends the system's reach across electrically noisy environments, maintaining signal integrity between control rooms and switchgear rooms separated by hundreds of meters.

For HMI integration, the UR9HH supports direct connection to GE QuickPanel+ industrial HMI panels via Ethernet, enabling operators to visualize protection status, event logs, and fault records without leaving the control room. The EnerVista UR Setup software provides a unified engineering environment for configuration, commissioning, and firmware management across all UR Series modules — reducing engineering time and eliminating version mismatch risks during system expansions.

Power Transmission & Distribution: The UR9HH is widely deployed in 110 kV–500 kV transmission substations as the CPU core for line differential, distance, and overcurrent protection schemes. Its IEC 61850 GOOSE capability enables inter-bay tripping and busbar protection coordination without auxiliary relays, reducing panel footprint and wiring complexity in GIS and AIS substations.

Power Generation: In thermal, hydro, and wind generation facilities, the UR9HH serves as the generator protection relay CPU, coordinating with excitation systems, turbine governors, and plant-level DCS via DNP3. Its multi-function protection capability consolidates what previously required multiple discrete relays into a single UR rack, simplifying maintenance and spare parts management.

Oil & Gas / Petrochemical: Offshore platforms and onshore refineries deploy the UR9HH within hazardous-area-rated control cabinets for motor feeder protection, transformer differential protection, and bus tie breaker control. The module's wide operating temperature range and vibration tolerance make it suitable for environments where standard office-grade electronics would fail prematurely.

Mining & Metallurgy: High-current motor protection in mining draglines, ball mills, and smelter rectifier transformers relies on the UR9HH's fast differential protection algorithms. The module's event recording and fault locator functions reduce mean time to repair (MTTR) after fault events, minimizing production downtime in continuous-process mining operations.

Water & Wastewater Treatment: Municipal water authorities use the UR9HH to protect large pump motors and MV switchgear in water intake and treatment facilities. Integration with plant SCADA via Modbus TCP enables centralized alarm management and remote relay setting changes without on-site engineer visits.

Marine & Shipboard Power: Classification-society-approved UR Series systems incorporating the UR9HH CPU are deployed on LNG carriers, naval vessels, and offshore supply vessels for generator protection, bus transfer automation, and shore power changeover control — meeting DNV, Lloyd's, and ABS requirements for marine electrical systems.

Q1: Is the GE UR9HH compatible with existing UR Series chassis and I/O modules already installed in my substation? Yes. The UR9HH is designed for full backward compatibility within the GE UR Series rack ecosystem. It slots directly into any standard UR 7-slot or 10-slot chassis and communicates with existing UR I/O, communication, and power supply modules via the backplane. Firmware version alignment between the UR9HH and installed modules should be verified using EnerVista UR Setup prior to commissioning. NANKMOS supplies the UR9HH pre-tested and firmware-verified to minimize integration risk.

Q2: Can the UR9HH support IEC 61850 GOOSE-based protection schemes alongside legacy DNP3 SCADA integration simultaneously? Yes. The UR9HH supports concurrent multi-protocol operation. IEC 61850 GOOSE messaging for inter-relay tripping and DNP3 for SCADA reporting can operate simultaneously on separate Ethernet ports or VLANs, depending on the installed communication module configuration. This dual-protocol capability is essential for brownfield substation upgrades where legacy SCADA infrastructure must coexist with modern IEC 61850 process bus architectures. NANKMOS technical support can assist with port configuration and VLAN planning during pre-shipment consultation.

Q3: What does the 12-Month Warranty cover, and what pre-shipment testing is performed on the UR9HH? Every UR9HH unit supplied by NANKMOS undergoes a structured pre-shipment test protocol including power-on functional verification, backplane communication integrity check, firmware version confirmation, and I/O channel continuity testing. The 12-Month Warranty covers manufacturing defects, firmware-related operational failures, and component-level faults under normal operating conditions. Warranty claims are processed with priority turnaround, and NANKMOS maintains buffer stock of UR Series CPU modules to support rapid exchange for critical infrastructure customers. Extended warranty and on-site commissioning support are available upon request.