+86 18030182217
+86 18030182217
sandydcsplc@gmail.com
Description
Product Overview
The GE UR8NH is a CT/VT (Current Transformer/Voltage Transformer) module designed for GE Multilin’s UR Series Universal Relays, delivering advanced analog signal monitoring and protection capabilities for critical power systems. As part of General Electric’s (GE) industrial automation portfolio, the GE UR8NH expands the UR relay’s input capacity, enabling precise measurement and control of electrical parameters in applications such as power distribution, motor protection, and generator monitoring. This module is engineered to integrate seamlessly with UR series relays, providing up to 24 analog CT/VT inputs and supporting both 1A and 5A CT ratings110.
The GE UR8NH features 8 standard CT inputs with enhanced diagnostic capabilities, ensuring signal integrity and accuracy in real-time monitoring of phase currents, line voltages, and neutral currents. Its Modbus RTU and Ethernet communication interfaces allow seamless integration with SCADA systems and PLCs, facilitating remote configuration and data analysis14. The module’s wide operating temperature range (-40°C to +70°C) and DIN rail mounting make it suitable for harsh industrial environments, including oil refineries, power plants, and manufacturing facilities13.
With fast trip times (<1 ms) and ±0.5% accuracy, the GE UR8NH ensures reliable protection against overcurrent, undercurrent, overvoltage, undervoltage, and frequency anomalies1. Its self-diagnostic functionality continuously monitors hardware health, providing error codes for proactive maintenance and minimizing downtime. By incorporating the GE UR8NH, industries achieve improved system reliability, reduced wiring complexity, and compliance with global safety standards.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | GE UR8NH |
| Manufacturer | General Electric |
| Product Type | CT/VT Module (Multilin UR Series) |
| Input Voltage | 100–240V AC (50/60 Hz) |
| CT Rating | Supports 1A and 5A CT secondaries |
| Number of Inputs | 8 CT/VT inputs (expandable to 24 with additional modules) |
| Communication | Modbus RTU, Ethernet |
| Signal Integrity Checks | Built-in validation for CT/VT inputs |
| Operating Temperature | -40°C to +70°C |
| Storage Temperature | -55°C to +85°C |
| Enclosure Rating | IP20 (dust and drip protection)3 |
| Physical Dimensions | 17.8 cm × 12.2 cm × 5.1 cm (7” × 4.8” × 2”) |
| Weight | 0.8 kg |
| Power Supply | 24–48V DC (3A) or 125–250V DC (0.7A); 100–240V AC (0.7A)4 |
| Power Consumption | Typical: 15 VA; Max: 30 VA |
| Certifications | CE |
Key Features and Advantages
Expanded Analog Monitoring
The GE UR8NH provides 8 dedicated CT/VT inputs, enabling comprehensive monitoring of electrical parameters such as phase currents, voltages, and power. This capability supports advanced protection functions like line current differential and distance protection, critical for safeguarding high-voltage transmission lines and generators4.
High-Speed Protection
With trip times <1 ms, the module ensures rapid response to faults, minimizing damage to equipment and reducing downtime. Its adaptive restraint algorithms dynamically adjust protection thresholds based on system conditions, preventing nuisance tripping14.
Signal Integrity Assurance
Built-in signal validation checks verify the accuracy and reliability of CT/VT inputs, ensuring data integrity for precise control decisions. The module also monitors internal DC voltage levels to detect potential hardware issues proactively4.
Flexible Communication
Support for Modbus RTU and Ethernet allows seamless integration with modern industrial networks. This enables remote access to real-time data, configuration updates, and firmware upgrades, enhancing operational efficiency110.
Rugged Design
The GE UR8NH is engineered for durability, with a wide temperature range and IP20-rated enclosure to withstand dust, humidity, and vibration. Optional conformal coating further protects against corrosive environments310.
Reduced Wiring Complexity
By consolidating analog inputs into a single module, the GE UR8NH simplifies system wiring and reduces the need for external signal conditioning components, lowering installation costs and improving maintainability10.
Application Areas
Power Distribution
The GE UR8NH monitors transformers, switchgear, and transmission lines in substations, providing real-time data for load balancing and fault detection. Its high-speed protection functions ensure grid stability during transient events14.
Industrial Motor Control
In manufacturing plants, the module safeguards pumps, compressors, and conveyor systems by monitoring motor currents and voltages. Its thermal modeling capabilities prevent overheating and extend motor lifespan110.
Oil & Gas
Offshore platforms and refineries use the GE UR8NH to protect pipeline pumps and gas turbines from voltage fluctuations and ground faults. Its robust design ensures reliable operation in harsh offshore environments34.
Renewable Energy
For wind farms and solar installations, the module monitors inverters and generators, optimizing energy production while providing protection against grid instability. Its Ethernet connectivity supports integration with centralized SCADA systems10.
Water & Wastewater
In water treatment facilities, the GE UR8NH controls pumps and agitators, ensuring efficient operation and compliance with environmental regulations. Its diagnostic features enable predictive maintenance to avoid costly breakdowns1.
Related Products
- GE UR9NH: A CPU module for UR series relays, providing advanced computing power for complex protection algorithms and logic control5.
- GE UR8MH: A digital I/O module offering 8 isolated inputs and outputs for integrating discrete signals into UR relay systems11.
- GE UR8AH: A high-accuracy CT/VT module with enhanced filtering for applications requiring precision measurements in noisy environments.
- GE UR-ETH: An Ethernet communication module that expands network connectivity for UR series relays, supporting protocols like IEC 61850.
- GE UR-PWR: A power supply module providing redundant DC/AC power to UR relay systems, ensuring uninterrupted operation during voltage sags.
- GE UR-TDI: A transducer input module for connecting analog signals from pressure, temperature, or flow sensors to UR relays.
Installation and Maintenance
Installation Preparation:
- Mounting: Install the GE UR8NH on a DIN rail within the UR relay chassis. Ensure proper grounding to minimize electromagnetic interference13.
- Wiring: Connect CT/VT secondary cables using terminal blocks, following the wiring diagram provided in the GE Multilin UR Series manual7. Use shielded twisted-pair cables for communication lines to reduce noise.
- Configuration: Use EnerVista UR Setup software to configure CT/VT ratios, protection settings, and communication parameters. Upload the configuration to the module via Ethernet or RS-485710.
Maintenance Recommendations:
- Visual Inspections: Regularly check the module’s LED indicators for status updates and verify connection tightness. Clean dust from the enclosure to maintain optimal thermal performance3.
- Firmware Updates: Periodically update the module’s firmware to access new features and security patches.
- Functional Testing: Perform annual testing using a relay test set to validate CT/VT input accuracy and protection response times.
- Spare Parts Inventory: Keep a spare GE UR8NH module in stock to minimize downtime during replacements.
Product Warranty and Support
GE provides a 1-year warranty for the UR8NH, covering defects in materials and workmanship. The module is 100% brand new and factory-sealed, ensuring compliance with original specifications12.
For technical support, GE’s global service network offers 24/7 assistance for system integration, diagnostics, and repair. Customers can access online resources and training programs to optimize the module’s performance and safety protocols47.
With spot inventory available, GE ensures 3–5-day delivery after payment, reducing operational risks associated with component shortages110.
Contact info
- WhatsApp: +86 18030182217
- Email: sandydcsplc@gmail.com
- Phone: +86 18030182217
- Wechat: +86 18030182217
- Website: www.xiongbaparts.com
