Description
Product Overview
GE Multilin UR9EH (UR-9EH) is the high-performance central processing unit module for GE Vernova Multilin UR series universal protection relays. It acts as the main controller core to execute protection algorithms, FlexLogic control logic, fault disturbance recording, SOE event timestamping and manage all internal I/O and external communication interfaces. Widely deployed in power substations, generator protection, bus protection and heavy industrial power distribution systems, this pluggable CPU is used as spare replacement and upgrade component for UR relay chassis such as G60, M60, D60, F60, C60, B30.
Technical Specifications
| Parameter | Details |
|---|---|
| Part Number | UR9EH (UR-9EH) |
| Brand | GE Multilin (GE Vernova) |
| Type | Main CPU Processor Module |
| Compatible Host | UR Series Universal Relays (G60, M60, D60, F60, C60, B30 etc.) |
| Sampling Rate | Up to 256 samples per power cycle |
| Communication Ports | 1 × 10/100Mbps Ethernet; 1 × RS232 local serial port; Front USB port |
| Supported Protocols | IEC61850, Modbus TCP, DNP3, GOOSE messaging |
| Logic Engine | FlexLogic™ configurable protection & control equations |
| Data Storage | Onboard memory for fault records, oscillography and event logs |
| Power Supply | Powered by UR chassis backplane |
| Operating Temperature | -40°C ~ +70°C |
| Storage Temperature | -40°C ~ +85°C |
| Humidity | 5~95% RH, non-condensing |
| Mounting | Slot plug-in inside UR universal relay chassis |
| Net Weight | ~1.36 kg |
| Certifications | CE, UL 508, CSA C22.2, IEC 60255 |
| Configuration Software | EnerVista UR Setup Software |
| Product Status | OEM discontinued, aftermarket spare only |
Key Features
- High-speed processing core for fast protective relay trip decisions and complex FlexLogic programming
- Multi-port communication: Ethernet for SCADA/IEC61850 GOOSE, RS232 and USB for local commissioning and firmware upgrade
- High resolution waveform sampling for disturbance oscillography and sequence of event (SOE) logging
- Hot-swappable plug-in design for UR relay chassis
- Onboard diagnostics to monitor CPU health, memory faults and communication link failures
- Supports IEC 61850 standard including GOOSE peer-to-peer interlocking between bay relays
- Seamless cooperation with UR expansion modules including UR6PH, UR8LH, UR8NH
Installation & Testing Notes
- Insert UR9EH into the dedicated CPU slot of UR series relay chassis
- Confirm backplane connection and seat the module firmly
- Connect Ethernet and RS232 communication wiring as per single line diagram
- Power up relay and verify front panel CPU status LEDs
- Upload existing setting file via EnerVista UR Setup or re-configure protection logic
- Hot swap is supported; isolate critical trip interlocks before replacing live CPU to prevent unwanted operation
- Verify communication links, GOOSE messaging, SOE and fault recording functions after replacement
- Perform secondary injection test to validate protection pickup and trip operation
FAQ
Q: What is UR9EH? A: It is the main high-performance CPU processor module for GE Multilin UR universal protection relay family.
Q: What is the difference between UR9EH and UR6PH / UR8LH / UR8NH? A: UR9EH is the main CPU core; UR6PH is DI/DO I/O expansion; UR8LH and UR8NH are CT/VT analog input expansion modules.
Q: Is UR9EH hot swappable? A: Yes, plug-in hot swap supported within UR chassis, but precaution must be taken to avoid inadvertent relay tripping.
Q: What software is used for configuration? A: EnerVista UR Setup software.
Q: What communication protocols does UR9EH support? A: IEC61850 (GOOSE), Modbus TCP, DNP3.
Start Chat
Send an Email
