{"product_id":"ge-multilin-ur-8ch-universal-relays-ct-vt-module","title":"Module CT\/VT pour relais universels GE Multilin UR-8CH","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eUR-8CH\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-integrity Current Transformer and Voltage Transformer (CT\/VT) input submodule engineered by GE Multilin for the versatile\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eUR Series\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUniversal Relays platform. Functioning as a critical analog sensing interface, this board furnishes the host protective relay with three dedicated 1 A \/ 5 A phase CT channels and one highly accurate 1 A \/ 5 A ground CT channel. Heavy continuous-process operations—including electrical power generation utilities, petrochemical refining complexes, and high-capacity mining substations—rely on the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eUR-8CH\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto capture primary current and voltage metrics with high fidelity. By providing robust galvanic isolation from hazardous high-voltage primary circuits and transforming inputs into standardized internal secondary signals, the module protects the main CPU from transient spikes. This precise tracking allows the protection system to execute fast trip commands during phase overcurrent, ground fault, or differential upsets, significantly mitigating equipment damage and reducing unprogrammed grid downtime.\u003c\/p\u003e\n\u003ch3\u003eHardware Infrastructure \u0026amp; Protection Mechanics\u003c\/h3\u003e\n\u003cp\u003eThe mechanical construction, signal conditioning paths, and adaptive programming logic of the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eUR-8CH\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecard support precise telemetry routing and complex electrical protection planning:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDual-Range Current Inputs:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOutfitted with flexible, high-accuracy phase CT inputs that accept standard 1 A or 5 A secondary inputs, adjusting smoothly to variable utility current standards.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGalvanic Fault Isolation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEstablishes a rugged physical separation barrier between high-energy primary lines and the low-voltage microprocessor deck to shield sensitive internal components.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Protective Customization:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIntegrates seamlessly with the host relay firmware to run diverse protective layouts, such as concurrent split-phase protection, high-impedance differential tracking, and residual ground fault monitoring.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAdvanced Signal Diagnostics:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUses dedicated hardware verification loops to continuous inspect the physical path of analog inputs, filtering out noise and confirming input signal truth before processing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDual-Layer Reliability Tracking:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCombines localized hardware diagnostic routines with the broader self-health monitoring software of the UR Series chassis to flag diagnostic alarms before a sensing drop can cause a safety system failure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePhysical \u0026amp; Performance Benchmarks\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eHardware Parameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCertified Industrial Standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel Identity\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUR-8CH\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBrand Manufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eGE Multilin (General Electric)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eControl System Line\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUR Series Universal Relays Platform\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModule Classification\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAnalog CT\/VT Data Acquisition Submodule\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePhase Current Inputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3 Channels (Configurable for 1 A or 5 A Secondary)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eGround Current Inputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 Channel (Configurable for 1 A or 5 A Secondary)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSignal Processing Software\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eEnerVista Launchpad Control Package Suite\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eHardware Compatibility Bounds\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eFully compatible with UR Series CPUs running firmware 3.5x or older\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Thermal Envelope\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-40 to +60 deg C Ambient Temperature Window\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eStorage Temperature Bounds\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-40 to +85 deg C Maximum Structural Limits\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePhysical Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.15 kg Net Mass Base\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOutline Dimensions\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e6.0 Inches L x 7.0 Inches W x 1.5 Inches H\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturing Origin\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMarkham, Ontario, Canada\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eElectrical Protection \u0026amp; Legacy Compatibility FAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow do engineers check the specific system firmware version when integrating the UR-8CH module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOperators manage and audit the internal parameters of the protective system using the EnerVista Launchpad software package. This diagnostic station allows personnel to view the active firmware revision. Because the UR-8CH represents a legacy order code for CT\/VT components, it is engineered to function inside chassis architectures operating firmware versions 3.5x or older.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat hardware restrictions occur if a system is upgraded to firmware version 4.0x or newer?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChassis upgraded to firmware version 4.0x or more recent require a matched pairing of modern CPU modules and updated CT\/VT input cards to communicate properly. Legacy submodules like the UR-8CH are not natively compatible with version 4.0x software layers, so keeping the core processor at version 3.5x or older is necessary during field maintenance swaps.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat structural advantages do the built-in current transformers offer over auxiliary protection boards?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe integrated current transformers on this module step down primary current into standard internal telemetry loops and output standardized secondary voltages. This design eliminates the need to install external auxiliary protective components, lowering wiring complexity, shrinking cabinet footprint, and reducing total system deployment costs.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Engineering \u0026amp; Installation Guide\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShield Grounding Methods and CT Secondary Loops:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlways route all current transformer field wiring through high-grade, twisted-pair shielded cables to prevent electromagnetic coupling from adjacent high-voltage bus ducts. Ground the cable shields at a single point on the relay cabinet enclosure wall, and keep the shield completely isolated at the field junction box. Never open-circuit the secondary circuit of a live current transformer under any circumstances, as this generates dangerous, high-voltage electrical arcs that can destroy the UR-8CH input stage and pose a severe shock hazard to operators.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAnti-Static ESD Protection and Chassis Alignment:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe diagnostic microchips and analog-to-digital converters mounted on the UR-8CH substrate are highly sensitive to electrostatic discharge (ESD). Field engineers must wear a properly bonded anti-static wrist strap clipped to the metal relay chassis before drawing the module from its anti-static delivery bag. Slide the card carefully into the chassis guide rails to avoid misaligning the internal backplane pins, and tighten all securing hardware to prevent vibration-induced contact resistance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnvironmental Controls and Terminal Block Security:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eVerify that all terminal screws holding the heavy copper CT leads are tightened down to the specified factory torque settings. Loose connections can introduce serious measurement variations or dangerous localized heating under heavy current loads. Maintain the surrounding switchgear cabinet atmosphere within the certified -40 to +60 deg C operating window, checking that louvers and cooling vents are unobstructed to prevent accelerated component aging.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":52695406707051,"sku":"UR-8CH","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/ge-ur8ch-multilin-control-module-j4s5mq0jxql_3c0bd65c-c9ac-47b3-a21a-8652ebdfc2db.jpg?v=1766134911","url":"https:\/\/www.plcprotech.com\/fr\/products\/ge-multilin-ur-8ch-universal-relays-ct-vt-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}