Product Overview
The GE Multilin UR-8FH serves as the critical sensory gateway for the Universal Relay (UR) ecosystem. This high-precision Analog Input Module (AIM) captures 8 independent channels of AC current and voltage directly from Current Transformers (CTs) and Potential Transformers (PTs). By digitizing these physical variables into a 16-bit high-resolution format, the UR-8FH enables the relay's CPU to perform high-speed protective calculations, revenue-grade metering, and transient fault recording. We provide this module as 100% Brand New and Original, ensuring your protection schemes—such as distance, differential, and overcurrent—operate with factory-certified accuracy.
Technical Specifications
| Feature | Specification Details |
| Manufacturer | GE Multilin (General Electric) |
| Model Number | UR-8FH |
| Series | Universal Relay (UR) |
| Input Channels | 8 Independent Isolated Channels |
| A/D Conversion | 16-bit High-Resolution Sampling |
| Frequency Support | 50 Hz and 60 Hz Nominal |
| CT Inputs | 1 A or 5 A (Relay Order Code Dependent) |
| PT Inputs | Up to 300 V AC Nominal |
| Measurement Accuracy | ±0.2% of Full Scale |
| Dielectric Strength | 2 kV AC Galvanic Isolation |
| Operating Temp | –40°C to +85°C (Utility Grade) |
| Configuration | EnerVista UR Setup Software |
Engineering Advantages
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High-Fidelity Signal Processing: The UR-8FH utilizes 16-bit analog-to-digital conversion to minimize quantization errors. This precision allows the relay to detect subtle harmonics and micro-fluctuations, which are essential for advanced power quality monitoring and sensitive differential protection.
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Transient Immunity and Isolation: Power system faults generate massive electrical surges. The UR-8FH incorporates 2 kV AC dielectric isolation and optical barriers between the field terminals and the system backplane. This architecture prevents primary circuit transients from damaging the relay's central processing unit.
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Utility-Grade Thermal Resilience: Protective relays often reside in unconditioned outdoor cabinets. The UR-8FH operates across an extreme temperature spectrum of –40°C to +85°C, maintaining timing accuracy and signal stability without the need for external cooling or heating.
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Low-Latency Fault Analysis: Optimized for oscillography, the module supports high-speed sampling rates. It feeds clean, digitized data to the relay’s internal memory, allowing engineers to reconstruct fault events with high-fidelity waveforms during post-event analysis.
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Plug-and-Play Integration: The modular design allows for rapid insertion into any 6U UR-series chassis. The module automatically syncs with the EnerVista UR Setup software, streamlining the calibration and commissioning process for multi-breaker substation configurations.
FAQs
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Can the UR-8FH handle both CT and PT inputs simultaneously?
The module supports 8 channels. Depending on the specific hardware configuration of your UR relay (defined by the relay's order code), these channels can be dedicated to currents, voltages, or a combination of both to suit line or transformer protection needs.
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Does this module require manual calibration during installation?
No. Every UR-8FH module undergoes factory calibration. Once inserted into the UR chassis, the system recognizes the module and applies the calibration constants automatically via the firmware.
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Is the UR-8FH compatible with all UR Series relays?
Yes, the UR-8FH is a universal module compatible with the B30, C30, D60, G60, and other UR platforms, provided the chassis firmware supports the specific hardware revision of the AIM card.
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Why should I choose Brand New units for my protection system?
Analog components like capacitors and optoisolators degrade over time due to heat and electrical stress. For critical infrastructure, a 100% Brand New UR-8FH ensures that the measurement accuracy (±0.2%) and dielectric integrity (2 kV) meet the original manufacturer specifications, preventing nuisance trips or failure-to-trip scenarios.
What's clients say about us
Excellent Emergency Support!
Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.
Mark Thompson
Maintenance Manager, USAReliable Source for New Spares
Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.
Robert Hoffmann
Engineering Lead, GermanyTop-tier Service and Quality
We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.
Lucas Müller
Operations Director, GermanyRelated Products
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