Substation Protection Solution – GE UR 8LH VT Module | UR Series
The GE UR 8LH is a Voltage Transformer (VT) input module designed for the GE Universal Relay (UR) Series platform. It provides accurate AC voltage sensing for protection, metering, and control functions in high-voltage substation and industrial power environments. Engineers specify this card when precise voltage measurement and relay coordination are critical to grid stability and equipment protection.
Where This Product Is Used
- Substation Automation: Deployed in 110 kV–500 kV substations as the primary voltage sensing interface for distance, overcurrent, and differential protection relays.
- Generator & Transformer Protection: Integrated into generator protection panels (e.g., GE G60, T60) to monitor stator voltage and detect over/under-voltage conditions.
- Feeder & Bus Protection: Used in feeder protection schemes alongside current transformer (CT) modules to enable complete line protection logic.
- SCADA & Energy Management Systems: Provides real-time voltage data to SCADA via the UR relay’s communication ports (IEC 61850, DNP3, Modbus).
- Industrial Power Distribution: Applied in large-scale manufacturing plants, petrochemical facilities, and data center power infrastructure for bus voltage monitoring.
- Renewable Energy Integration: Used in wind farm and solar plant protection panels to monitor grid-side voltage for anti-islanding and fault detection.
Technical Specifications
- Part Number / SKU: UR 8LH
- Module Type: Voltage Transformer (VT) Input Card
- Platform Compatibility: GE UR Series (C60, D60, F60, G60, L90, T60, etc.)
- Nominal Input Voltage: 100–240 V AC (VT secondary)
- Number of VT Channels: 8 (configurable per relay model)
- Measurement Accuracy: ±0.1% of full scale
- Frequency Range: 50 / 60 Hz
- Isolation: Galvanically isolated inputs
- Form Factor: Plug-in module for UR chassis backplane
- Operating Temperature: –40°C to +85°C
- Weight: 1,130 g
- Compliance: IEC 60255, IEEE C37.90, UL 508
Why Engineers Specify This Model
- Platform Standardization: The UR 8LH is a native GE UR Series module — no adapters, no firmware conflicts, plug-and-play replacement.
- High Channel Density: 8 isolated VT inputs per card reduce chassis slot consumption in multi-feeder protection panels.
- Precision Metering: ±0.1% accuracy meets revenue-grade metering requirements without a separate metering device.
- Wide Temperature Range: Rated for –40°C to +85°C, suitable for outdoor switchgear cabinets and arctic substations.
- Long Service Life: GE UR modules are designed for 20+ year service cycles, reducing lifecycle replacement costs.
- Backward Compatibility: Compatible with legacy UR firmware versions, enabling drop-in replacement without relay reconfiguration.
Complete System Bill of Materials
For a complete UR Series protection relay system, the following modules are typically specified alongside the UR 8LH VT Module:
- GE UR 8CT – Current Transformer Input Module
- GE UR 8D – Digital Output Module
- GE UR 8I – Digital Input Module
- GE UR CPU Module (model-specific, e.g., C60, G60)
- GE UR Power Supply Module (e.g., 9E)
- GE UR Chassis / Backplane (6-slot or 10-slot)
- GE EnerVista UR Setup Software (for configuration and commissioning)
Compliance & Industry Standards
- IEC 60255 – Measuring Relays and Protection Equipment
- IEEE C37.90 – Relays and Relay Systems Associated with Electric Power Apparatus
- IEC 61850 – Communication Networks and Systems in Substations
- UL 508 – Industrial Control Equipment
- CE Marking – European Conformity
- RoHS Compliant
Quality Assurance & Sourcing
All GE UR Series modules supplied by Konmask.com are sourced through verified industrial supply channels. Each unit undergoes the following before shipment:
- Visual inspection for physical damage, corrosion, and label integrity
- Firmware version verification against GE release notes
- Functional power-on test where applicable
- Anti-static packaging with humidity indicator cards
- Certificate of conformance available upon request
How to Source This Part
- In Stock: Add to cart and proceed to checkout — most orders ship within 1–3 business days.
- Lead Time Orders: Contact us for bulk procurement, project-based BOM fulfillment, or expedited sourcing.
- RFQ / Quote: Email support@konmask.com with your project BOM for volume pricing.
- Technical Pre-Sales: Our engineering team can confirm compatibility with your specific UR relay model and firmware version before purchase.
Application-Specific FAQ
Q: Is the GE UR 8LH compatible with the GE C60 relay?
A: Yes. The UR 8LH VT module is compatible with all UR Series relay platforms including C60, D60, F60, G60, L90, and T60, subject to chassis slot availability and firmware version.
Q: Can this module be used for both 50 Hz and 60 Hz systems?
A: Yes. The UR 8LH supports both 50 Hz and 60 Hz nominal frequencies, making it suitable for global deployment.
Q: What is the VT secondary voltage range supported?
A: The module accepts standard VT secondary voltages of 100–240 V AC, covering the most common utility and industrial VT ratios.
Q: Do you provide a warranty on this module?
A: Yes. Konmask.com provides a 90-day functional warranty on all GE UR Series modules. Extended warranty options are available — contact us for details.
Q: Can I return a module if it is not compatible with my relay?
A: Yes, subject to our returns policy. We strongly recommend confirming compatibility with our technical team before ordering to avoid delays.
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