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Description
The GE Multilin UR9GV Analog Input Module delivers precise signal acquisition for demanding protection and control applications in modern substations. It works directly with CT and VT circuits, allowing engineers to capture accurate voltage and current measurements in real time. Moreover, the module integrates seamlessly into the Universal Relay (UR) platform, which ensures consistent performance across diverse power system architectures. Its robust design supports advanced protection schemes and provides dependable metering functions for transmission, distribution, and industrial electrical networks.
Key Benefits
The UR9GV module provides stable and repeatable measurement accuracy, which improves overall relay decision quality. In addition, its flexible configuration supports differential, phase-to-ground, and multi-source protection strategies without requiring additional hardware. Engineers benefit from enhanced diagnostics that detect wiring issues early and reduce commissioning time. Therefore, the module strengthens system reliability by maintaining consistent performance under harsh operating conditions.
Technical Specifications
Module Type: Analog Input Module for GE Multilin UR Series
Weight: 0.6 kg
Electrical Inputs
• Current Inputs: 1 A or 5 A nominal (configurable)
• Voltage Inputs: 60–240 VAC nominal (via VT/PT)
• Supported Channels: Up to 4 CT inputs and 4 VT inputs
• Extended Platform Capability: Up to 16 total CT/VT inputs depending on UR frame
Performance
• Frequency Range: 50 Hz / 60 Hz
• Metering: True RMS for V, I, P, Q, S, PF, Energy, Frequency
• Event Recording: Up to 1024 time-stamped events
System Integration
• Auxiliary Power: 24–250 VDC or 100–240 VAC
• Communications: IEC 61850, Modbus TCP/RTU, DNP3.0, PRP/HSR
• Diagnostics: Self-monitoring with enhanced signal integrity checks
Typical Applications
This module supports protection schemes used in transmission lines, distribution feeders, and industrial power systems. For instance, the UR9GV is often deployed in differential protection for transformers and generators, where precise CT matching is essential. Moreover, utilities integrate it into redundant architectures requiring high-availability communications. Its stable measurement platform also benefits metering-driven applications in energy management systems.
Support & Maintenance
Routine firmware updates help maintain security and performance over the module’s service life. In addition, GE offers global technical support that assists engineers with system configuration and field integration. Proper CT and VT wiring practices ensure long-term signal fidelity and reduce downtime during maintenance intervals.
FAQ
Q1: Does the UR9GV support both CT and VT inputs simultaneously?
A1: Yes, the module acquires current and voltage signals at the same time for advanced protection tasks.
Q2: Can the nominal current be switched between 1 A and 5 A?
A2: Yes, the input current rating is field-configurable to match existing CT circuits.
Q3: Which UR relays are compatible with this module?
A3: The UR9GV works with GE Multilin Universal Relay (UR) series frames that support analog expansion.
Q4: Does the module support IEC 61850?
A4: Yes, UR platforms with appropriate communication cards provide full IEC 61850 capabilities.
Q5: Is this module suitable for differential protection?
A5: Yes, its precise CT inputs and synchronized signal acquisition make it ideal for differential schemes.
