Overview
Configured for protection algorithm execution and relay data processing in GE Multilin Universal Relay systems, the GE Multilin UR9WH (UR9WH CPU Module) provides direct physical and logical processing control for UR-series protection platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | UR9WH / UR-9WH |
| Brand | GE Multilin |
| Origin | USA |
| Weight | Approx. 0.2 kg to 0.4 kg |
| Dimensions | Standard GE Multilin UR module form factor |
| Operating Temp | -40 deg C to +60 deg C |
| Power Consumption | Approx. 5 W to 15 W depending on communication interface load |
| Module Type | CPU / Controller Module |
| System Platform | GE Multilin Universal Relay Series |
| Installation Method | Direct insertion into compatible UR chassis slot |
| Software Compatibility | EnerVista UR Setup software suite |
| Time Synchronization | IRIG-B, IEEE 1588 PTP, or SNTP depending on relay configuration |
| Communication Support | IEC 61850, Modbus TCP/RTU, DNP 3.0 through configured UR interfaces |
| Power Input | Supplied through UR chassis internal backplane power rail |
Industrial Control Processing and Network Integration
The GE Multilin UR9WH CPU module executes relay protection logic, programmable control sequences, measurement processing, and communication management inside Universal Relay chassis platforms. In addition, it manages backplane bus communication velocity and coordinates data exchange between installed UR-series input, output, and communication modules.
The module supports firmware flash compatibility with configured UR-series hardware revisions. Furthermore, the CPU architecture allows I/O density scaling by managing multiple protection and control modules installed within compatible relay chassis configurations.
Frequently Asked Questions
Q: Can the GE Multilin UR9WH module be installed into any UR-series chassis slot?
A: The UR9WH requires a compatible CPU position within the Universal Relay chassis. Installation location depends on the specific UR hardware configuration and ordering code.
Q: Does the UR9WH support hot-swapping during relay operation?
A: The module is designed for modular UR chassis installation; however, replacement procedures must follow GE Multilin maintenance instructions because relay protection availability depends on system operating status.
Q: How is the UR9WH firmware updated?
A: Firmware updates are performed through compatible GE Multilin software tools. The installed firmware version must match the host relay chassis hardware and configured module set.
Field Installation Guidelines
- Install the UR9WH only in the designated CPU module position of the compatible GE Multilin UR chassis.
- Verify chassis power isolation before removing or inserting the module.
- Ensure the backplane connector is clean and fully engaged before system energization.
- Maintain proper cabinet grounding and connect shielding according to substation wiring standards.
- Route communication cables separately from high-voltage switching conductors to reduce electromagnetic interference.
- Confirm firmware compatibility before commissioning the relay protection system.
- Verify network parameters, time synchronization settings, and communication interface configuration after installation.
