Overview
Configured for high-speed protection execution in the GE Multilin Universal Relay system, the GE Multilin UR-9EV (UR-9EV CPU Processor Module) provides direct processing and communication management for relay protection logic, automation functions, and system data handling.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | GE Multilin UR-9EV |
| Brand | GE Multilin |
| Origin | United States |
| Product Type | CPU Processor Module |
| Platform Compatibility | GE Multilin Universal Relay (UR) Series |
| Chassis Position | Slot B |
| Processor Function | Central processing unit for protection, control, metering, and communication tasks |
| Communication Protocols | IEC 61850 Edition 2, DNP 3.0, Modbus RTU/TCP, IEC 60870-5-104 |
| Ethernet Interface | 10/100/1000 Base-TX and/or 100 Base-FX depending on relay configuration |
| Serial Communication | Supported through configured UR communication interfaces |
| Time Synchronization | IRIG-B, IEEE 1588 Precision Time Protocol (PTP), SNTP |
| Configuration Software | EnerVista UR Setup Software |
| Operating Temp | -40 deg C to +60 deg C |
| Storage Temp | -40 deg C to +85 deg C |
| Relative Humidity | 5% to 95% non-condensing |
| Power Consumption | Backplane supplied; exact consumption depends on relay configuration |
Firmware Flash Compatibility and Backplane Communication
The GE Multilin UR-9EV operates as the main processing node within the UR relay backplane architecture. Therefore, it coordinates communication between protection modules, I/O modules, and external network interfaces. The module supports firmware flash compatibility within the UR platform, allowing controlled software updates through EnerVista UR Setup.
In addition, the processor manages deterministic data exchange across the internal backplane bus. This operation enables coordinated execution of protection algorithms, event recording, and relay control sequences without external processing hardware.
The UR-9EV also supports Ethernet-based industrial communication networks, including IEC 61850 configurations used for substation automation. Furthermore, the processor handles protocol processing, time synchronization, and cybersecurity functions such as authentication management and access control.
Frequently Asked Questions
Q: What function does the GE Multilin UR-9EV perform inside a UR relay chassis?
A: The UR-9EV functions as the central CPU module. It executes protection logic, manages relay operations, processes communication data, and controls system-level functions.
Q: Can the UR-9EV support IEEE 1588 time synchronization?
A: Yes. When supported by the overall relay configuration, the UR-9EV can operate with IEEE 1588 PTP for accurate event timing and synchronized measurement applications.
Q: Is the UR-9EV a hot-swappable module?
A: The UR-9EV is designed as a plug-in UR chassis module. Hot-swap operation depends on the specific relay model, hardware configuration, and manufacturer procedures.
Field Installation Guidelines
- Install the UR-9EV module only in the designated GE Multilin UR chassis CPU slot position.
- Verify relay power isolation before inserting or removing the processor module.
- Maintain proper grounding practices for chassis protection and communication cable shielding.
- Route Ethernet and serial communication wiring separately from high-voltage power conductors to reduce electromagnetic interference.
- Confirm firmware compatibility between the UR-9EV processor module and the installed UR relay application before commissioning.
- Use approved configuration tools to verify communication parameters, time synchronization settings, and protection logic operation after installation.
