Description
Key Technical Specifications
- Model Number: UR8FH / UR-8FH
- Manufacturer: GE Multilin
- Series: Universal Relay (UR)
- Product Type: CT/VT Sensor Module
- Input Capacity: Standard 4CT/4VT (Current Transformer / Voltage Transformer)
- Grounding Protection: Standard (No sensitive ground fault protection)
- Analog I/O: Supports DCmA and RTD inputs for process monitoring
- Digital I/O: Supports up to 96 contact inputs and 64 contact outputs
- Target Application: High-impedance grounded systems
- Weight: 1.2 kg
Functional Role & Application Analysis
The GE UR8FH is a dedicated CT/VT (Current Transformer/Voltage Transformer) sensor module designed specifically for the GE Universal Relay (UR) platform. It acts as the primary sensing interface, providing the standard 4CT/4VT capacity required to monitor electrical parameters in high-impedance grounded systems. This module solves the critical need for reliable, high-voltage electrical measurement while explicitly lacking sensitive ground fault protection.
Typical use cases include:
- Power Distribution Protection: Integrated into Universal Relays to monitor up to 24 analog CTs/VTs for standard overcurrent and voltage protection schemes.
- High-Impedance Grounding Systems: Deployed in substations where sensitive ground fault protection is not required, making it a cost-effective standard sensing solution.
- Process & Equipment Monitoring: Utilizing its auxiliary DCmA and RTD inputs to monitor non-electrical parameters like temperature, pressure, vibration, or flow alongside electrical protection.
Our Quality Standard & Testing Process
We understand that the cost of an unreliable part is far greater than its purchase price. We have established a rigorous, multi-stage testing process to ensure every product we ship is 100% functional and meets original equipment specifications.
- Visual & Component Inspection: All boards undergo professional cleaning and microscopic inspection to ensure no physical damage, corrosion, or compromised solder joints.
- Live System Test: The module is installed in a live GE Universal Relay test rack and run for a minimum of 24 hours to verify continuous operation, thermal stability, and communication integrity.
- Full-Function Diagnostics: We simulate primary CT/VT secondary signals and verify RTD/DCmA input scaling to validate full signal path accuracy and relay integration.
- Warranty Backing: Only parts that pass all diagnostic tests are approved for shipment and backed by our full 12-month warranty.
GE-UR8FH
Compatibility & Migration Paths
To ensure this UR8FH is 100% compatible with your system, you must check these key compatibility points. Failure to verify this is a common project risk that leads to costly commissioning delays.
- Ground Fault Protection Requirement: This is the most critical check. The UR8FH lacks sensitive ground fault protection. If your system requires this, you must upgrade to the UR-8G, UR-8J, UR-8M, or UR-8R modules.
- Legacy Replacement: If replacing an older UR-8B or UR-8D module, be aware that those older generations did include sensitive ground fault protection. Do not use the UR8FH as a direct drop-in if that specific protection feature is required.
- System Integration: Confirm your Universal Relay chassis has the appropriate sensor I/O module slots to support the auxiliary DCmA/RTD cards if your application requires process monitoring.
- Get Expert Help: Unsure about your system? Contact our technical team today for a free compatibility check. Provide your current controller serial number and software version for immediate validation.
