GE Multilin UR4LA Substation Metering CT VT Module New

Product Overview

The GE Multilin UR4LA functions as a high-accuracy, slide-in Current Transformer (CT) and Voltage Transformer (VT) Analog Input Module designed exclusively for the Multilin Universal Relay (UR) hardware platform. This specialized module acts as the critical sensory interface for utility and heavy industrial power systems. It continuously samples high-voltage and high-current waveforms from physical secondary instrument transformers, reducing them safely into digital data that the host relay uses for real-time protection algorithms, harmonic monitoring, and revenue-grade metering.

The architecture provides multi-channel configurations, typically offering 8 independent CT channels and 4 independent VT channels on a single faceplate assembly. This dense channel layout allows a single UR chassis to track comprehensive three-phase line currents, residual neutral currents, and bus voltages simultaneously.

We distribute this power system component exclusively in 100% brand new, original, and factory-sealed condition. This guarantees pristine internal sensing coils, untouched solid-state digital conversion chips, and verified factory calibration metrics right out of the box.

Technical Specifications

The table below logs the precise operational, electrical, and physical parameters for the UR4LA input hardware module. All entries conform strictly to standard ASCII formatting.

Engineering Advantages

• High-Accuracy IEC Standard Waveform Sampling: The module features premium internal matching transformers and analog-to-digital converters that meet rigid IEC 60255 standards. This precision ensures tight accuracy profiles during standard steady-state metering operations and maintains complete linearity during catastrophic over-current faults.
• Galvanic Isolation Against Grid Surges: Robust galvanic isolation barriers divide the high-energy terminal inputs from the internal low-voltage CPU computing components. This architectural boundary blocks high-voltage transients, capacitive switching spikes, and lightning-induced surges at the boundary wire, safeguarding the central processor rack.
• Streamlined Multi-Phase Current and Voltage Layout: Housing up to 12 total CT/VT channels in one standard slide-in card optimizes panel space utilization. This high density allows engineers to wire primary, secondary, and neutral measurement loops directly into a single rack slot, reducing internal panel layout complexity.
• Utility-Grade Thermal Resilience: Advanced thermodynamic design ensures the module functions flawlessly without internal cooling fans across an operating window of -40 to +70 degrees Celsius. This uncompromised stability guarantees that outdoor breaker cubicles and remote switchyard enclosures maintain continuous protection during extreme weather events.

FAQs

• Is this UR4LA CT/VT module a brand new original factory unit?
• Yes. We supply the UR4LA module exclusively as a 100% brand new, authentic, original component. It ships inside its unopened, factory-sealed packaging to guarantee that internal analog tuning components, screw terminals, and precision calibration settings are in pristine condition.
• Can I use this module to replace an older analog input card in a GE Multilin G60 Generator Relay?
• Yes. The modular design of the Multilin UR series allows full interchangeability. The UR4LA slides directly into the appropriate rear module slots of any Universal Relay chassis, including the G60 Generator Relay, T60 Transformer Relay, or F60 Feeder Protection unit.
• Does the module support simultaneous measurement of both 1 Amp and 5 Amp CT secondary outputs?
• The channel hardware configuration determines the exact secondary current inputs. You must match the specific sub-version configuration of your UR4LA model to the physical outputs of your field current transformers (1A or 5A secondary lines) to ensure proper measurement scaling and prevent thermal overload.
• What precautions should I take during the physical installation of this module?
• Never pull or insert the UR4LA module while active currents pass through the external CT wiring loops. Open-circuiting an active CT primary loop generates dangerous, life-threatening high voltages. Always short-circuit the external CT secondary test blocks securely before removing or servicing any analog input card.