GE UR8HH
GE UR8HH - Image 2

GE UR8HH

Product Introduction: The GE UR8HH is a versatile module in the GE Multilin UR (Universal Relay) series, integrating data acquisition, signal control, and real-time monitoring functions. It supports multiple input and output types, including current transformers (CT) and voltage transformers (VT), and provides control signal output. The UR8HH is designed to provide reliable protection functions for power system measurement and control, ensuring stable system operation.

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Category: SKU: GE UR8HH

Description

GE UR8HH

Technical Specifications:

  • Series: GE Multilin UR (Universal Relay)
  • Module Type: CT/VT and control signal module
  • Input Types: Supports multiple CT and VT configurations (1 A/5 A ground CT, 3 A/15 A phase CT per variant)
  • Output Types: Control signal output
  • Communication Interfaces: Ethernet, RS-485, USB
  • Communication Protocols: Modbus, DNP3, IEC 61850
  • Operating Temperature: -40 °C to +85 °C
  • Protection Rating: IP65
  • Measurement Accuracy: High-precision measurement capability

Functional Features:

  • Integrates data acquisition, signal control, and real-time monitoring in one module
  • Supports multiple CT and VT input configurations for flexible application
  • Multiple communication interfaces (Ethernet, RS-485, USB) for integration with SCADA and DCS
  • Supports industry-standard protocols (Modbus, DNP3, IEC 61850) for interoperability
  • High reliability with advanced design and manufacturing processes
  • Programmable configuration for different application scenarios
  • Fast response to power system anomalies

Application Scenarios:

  • Power systems: power plants, substations, distribution systems
  • Generator control systems, grid protection systems, emergency power systems
  • Industrial automation: petrochemical, metallurgy, mining industries
  • Building automation: HVAC control, lighting control
  • Data acquisition systems: industrial data acquisition and monitoring
  • Environmental, biotechnology, energy, and pharmaceutical applications

Performance Parameters:

  • High-precision measurement of key power system parameters
  • Fast response to power system anomalies for protective action
  • Stable operation across wide temperature range (-40 °C to +85 °C)
  • IP65 protection rating for harsh environment installation

Material and Structural Characteristics:

  • Industrial-grade PCB with precision CT/VT input circuits
  • Robust module housing with IP65 protection rating (when properly installed)
  • Plug-in module form factor matching UR relay chassis
  • Multiple communication connectors (Ethernet, RS-485, USB) on rear panel

Working Principle: The module receives current and voltage signals from CTs and VTs, conditions and digitizes them, and transmits the data to the UR relay CPU for protection and metering functions. The CPU processes the data using protection algorithms and issues control signals through the module’s output circuits. Communication interfaces enable data exchange with SCADA, DCS, and other monitoring systems via Modbus, DNP3, or IEC 61850 protocols. Installation Requirements:

  • Mount inside the UR relay chassis using the plug-in module interface
  • Connect CT and VT inputs to the rear terminal blocks per schematics
  • Wire communication interfaces (Ethernet, RS-485, USB) to external systems
  • Configure CT/VT ratios and communication parameters using EnerVista UR software
  • Verify measurement accuracy during commissioning

Usage Notes:

  • Verify CT and VT ratio settings match the installed instrument transformers
  • Configure communication protocol parameters to match the supervisory system
  • Use shielded cabling for CT/VT inputs to minimize noise
  • Periodically verify measurement accuracy using a relay test set
  • Replace only with an identical UR8HH module to maintain configuration integrity

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