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- GE
- UR 9EV
- Universal Relay CPU Module
- USA
- 120 × 30 × 100 mm
- 0.78 kg
- Xiamen, China
- New & In Stock
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Product Overview
The GE UR 9EV is a Universal Relay CPU Module for the GE Multilin UR Series modular protection platform. It serves as the central processing element that coordinates measurement information, configured protection logic, control functions, diagnostics, and communication within the relay architecture.
In a typical UR Series installation, CT/VT modules acquire electrical measurements while other I/O modules provide equipment status and control signals. The UR 9EV processes these inputs according to the configured relay application and coordinates the corresponding protection and control responses.
Unlike a dedicated CT/VT interface, the CPU operates at the system-processing level. It works with the different hardware modules installed in the relay so that measurement acquisition, protection logic, output control, event information, and diagnostics function as a coordinated system.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | UR 9EV |
| Product Type | Universal Relay CPU Module |
| Product Family | Multilin UR Series |
| Series | GE Multilin UR Series |
| Module Type | CPU / Processing Module |
| Processing Function | Relay Data Processing and Control |
| System Function | Protection, Control and Monitoring |
| Data Source | Relay Measurement and I/O Modules |
| Logic Function | Configured Protection and Control Logic |
| Communication Role | Relay System Communication Management |
| Application | Electrical Protection and Automation |
| System Integration | GE Multilin UR Protection Platform |
| Installation | Protection / Control Panel |
| Dimensions | 120 × 30 × 100 mm |
| Weight | 0.78 kg |
Product Features
- Central processing function coordinates measurement, status, logic, and control information within the UR Series relay.
- Multilin UR Series integration supports modular protection architectures built around the Universal Relay platform.
- Protection logic coordination processes incoming electrical information according to the configured application.
- Control function management coordinates programmed relay outputs and control sequences.
- System diagnostics supports monitoring of relay operating conditions and troubleshooting activities.
- Communication coordination allows relay information to be exchanged with connected engineering, monitoring, and control systems.
- Modular processing architecture separates CPU responsibilities from dedicated CT/VT and I/O interface functions.
Working Principle
The GE UR 9EV operates as the processing core of the Multilin UR Series architecture. It receives measurement and status information from the relay’s input structure, evaluates the data against configured logic, and coordinates the appropriate protection or control response.
1. Input information
CT/VT modules and other I/O interfaces provide current, voltage, status, and control information to the relay architecture. These inputs establish the operating information available to the CPU.
2. Data processing
The CPU processes the incoming information according to the configured relay application. Measurements and status changes are evaluated within the protection and control logic.
3. Protection function execution
Configured protection functions use the processed information to determine whether operating criteria have been met. The CPU coordinates the execution of these functions within the relay system.
4. Output coordination
When a configured function calls for an action, the CPU coordinates the corresponding output path. Depending on the application, the result may be a trip command, alarm, interlock, control command, or other programmed response.
5. Diagnostics and monitoring
The CPU manages system-level information used for status and diagnostics. Maintenance personnel can use this information together with individual module diagnostics to identify problems affecting the relay.
6. Communication and supervision
The processing layer coordinates relay information exchanged with external engineering, monitoring, and control systems. This allows protection status and operational information to become part of the wider electrical automation system.
Role in a Multilin UR Series Protection Architecture
The UR 9EV occupies the central processing layer within a Multilin UR Series protection system. Measurement modules and I/O interfaces supply information, while the CPU processes that information and coordinates the configured protection, control, monitoring, and communication functions.
| Architecture Layer | Typical Function | Role of UR 9EV |
|---|---|---|
| CT / VT Modules | Acquire electrical measurements | Supplies measurement information |
| I/O Modules | Interface status and control circuits | Provides status and control data |
| CPU Module | Process data and execute logic | Central processing and coordination |
| Protection Functions | Evaluate electrical conditions | Executed and coordinated by the CPU |
| Output / Trip Layer | Transfers protection commands | Coordinates configured outputs |
| Communication Layer | Exchanges relay information | Manages system-level data coordination |
| Engineering / Monitoring Layer | Configuration and supervision | Uses relay status, diagnostics, and data |
Industrial Applications
| Application | Typical Use |
|---|---|
| Electrical Substations | Central processing for feeder and equipment protection |
| Power Generation | Coordinating generator protection and control functions |
| Industrial Power Distribution | Processing electrical measurements and protection logic |
| Switchgear Protection | Managing protection, monitoring, and control functions |
| Transformer Protection | Coordinating transformer measurement and protection functions |
| Motor Protection | Processing measurement and status information for configured motor protection |
| Utility Protection | Supporting modular relay processing in utility protection systems |
| Process Plants | Integrating electrical protection, diagnostics, monitoring, and control |
Installation and Maintenance
- Verify the CPU model — Confirm that UR 9EV matches the approved Multilin UR Series configuration before installation.
- Review the complete hardware arrangement — Check the associated measurement, I/O, power, and communication modules.
- Follow power isolation procedures — De-energize the applicable protection equipment according to the approved maintenance procedure.
- Use ESD precautions — Handle the CPU with appropriate electrostatic-discharge protection.
- Check module seating — Ensure that the CPU is correctly positioned and fully seated in the relay assembly.
- Inspect associated modules — Check CT/VT and I/O modules when investigating CPU or system-level abnormalities.
- Verify configuration compatibility — Confirm that the installed CPU corresponds with the intended relay configuration.
- Review diagnostic information — Check relay status and diagnostic indications after installation or during troubleshooting.
- Verify communications — Confirm required connections to engineering, monitoring, or control systems.
- Check protection configuration — Verify that configured protection functions correspond to the installed hardware and measurement paths.
- Perform functional testing — Test applicable protection, alarm, control, and output functions before returning the relay to service.
- Document the maintenance work — Record the CPU replacement, configuration checks, diagnostics, and functional-test results.
Related Components
| Component | Function |
|---|---|
| GE Multilin UR Series CT/VT Module | Provides current and voltage measurement interfaces |
| GE Multilin UR Series I/O Module | Interfaces equipment status and control circuits |
| GE Multilin UR Series Protection Relay | Provides the complete modular protection platform |
| Current Transformer (CT) | Supplies current measurement information |
| Voltage Transformer (VT) | Supplies voltage measurement information |
| Protection Output / Trip Circuit | Transfers configured relay commands to external equipment |
| Engineering / Monitoring System | Supports relay configuration, supervision, and diagnostics |
Recommended Related Models
| Model | Product Type | Typical Relationship |
|---|---|---|
| GE UR 9AH | Universal Relay CPU Module | Related UR Series CPU module |
| GE UR 9CH | Multilin UR Series Universal Relay CPU Module | Related UR Series CPU module |
| GE UR 9EH | Multilin UR Series Universal Relay CPU Module | Related UR Series CPU module |
| GE UR 8NH | Multilin UR Series CT/VT Module | Related CT/VT interface module |
Key Advantages
- Central CPU processing within the Multilin UR Series platform
- Coordinates configured protection and control logic
- Processes information from measurement and I/O modules
- Supports system diagnostics and monitoring
- Coordinates relay outputs and protection responses
- Integrates processing with the modular UR Series architecture
Technical FAQs
What is the function of the GE UR 9EV CPU Module?
The UR 9EV is a Universal Relay CPU Module that provides central processing within the Multilin UR Series architecture. It processes measurement and status information and coordinates configured protection, control, monitoring, and communication functions.
How does the UR 9EV work with other UR Series modules?
The CPU receives information from CT/VT and I/O modules, processes the available data according to the relay configuration, and coordinates the resulting protection or control actions. Dedicated interface modules continue to perform their respective measurement and I/O functions.
What should be checked if the relay develops multiple system-level abnormalities?
Check CPU status and diagnostics first, then review the relay power supply, configuration, measurement modules, I/O modules, and communication paths. Multiple simultaneous symptoms may require examination of the common processing and system infrastructure rather than a single field circuit.
What should be verified after replacing the UR 9EV?
Confirm that the CPU is correctly installed and recognized, then verify the relay configuration, diagnostics, communications, measurement inputs, protection functions, alarms, and outputs. Complete the applicable functional tests before returning the protection system to normal operation.