{"product_id":"ge-multilin-ur-series-ct-vt-ur8ah-ur-8ah-processor-module","title":"GE Multilin UR Series CT\/VT UR8AH UR 8AH Processor Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eGE UR-8AH\u003c\/strong\u003e is a \u003cstrong\u003eCT\/VT Module\u003c\/strong\u003e (Current Transformer \/ Voltage Transformer) from \u003cstrong\u003eGE Multilin\u003c\/strong\u003e, designed for the \u003cstrong\u003eUR Series Universal Relay\u003c\/strong\u003e platform. This module scales down the voltage and current values of the power system to manageable levels for the Universal Relay, ensuring precise measurement and protection. It provides \u003cstrong\u003ethree 1A\/5A Phase CTs\u003c\/strong\u003e, \u003cstrong\u003e1A\/5A Ground CTs\u003c\/strong\u003e, and \u003cstrong\u003efour Voltage Transformers (VTs)\u003c\/strong\u003e for comprehensive power system monitoring.\u003c\/p\u003e\n\n\u003cp\u003eThe UR-8AH is best used with \u003cstrong\u003eolder UR CPUs\u003c\/strong\u003e such as the UR-9A, UR-9C, or UR-9D, and requires \u003cstrong\u003efirmware version 3.5x or earlier\u003c\/strong\u003e for compatibility. The module features secondary winding grounding for enhanced operator safety and supports configuration via \u003cstrong\u003eEnerVista UR\u003c\/strong\u003e software.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3 × Phase CTs\u003c\/strong\u003e (1A\/5A) for current monitoring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 × Ground CT\u003c\/strong\u003e (1A\/5A) for ground fault detection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4 × Voltage Transformers (VTs)\u003c\/strong\u003e for voltage measurement and scaling\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecondary winding grounded\u003c\/strong\u003e for enhanced operator safety\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFault detection capability\u003c\/strong\u003e to identify unsafe system conditions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfigurable CT and VT settings\u003c\/strong\u003e via EnerVista UR software\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eData trending and export\u003c\/strong\u003e for system analysis\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard 4CT\/4VT configuration\u003c\/strong\u003e for versatile protection schemes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; margin:15px 0;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eManufacturer\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eGeneral Electric (GE) Multilin\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eProduct Family\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eUR Series Universal Relay\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eModule Type\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eCT\/VT Module (Order Code: 8A)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003ePhase CTs\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003e3 × 1A\/5A\u003c\/strong\u003e\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eGround CTs\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003e1 × 1A\/5A\u003c\/strong\u003e\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eVoltage Transformers (VTs)\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003e4 VTs\u003c\/strong\u003e\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eSystem Compatibility\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eUR-9A, UR-9C, UR-9D CPUs\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eFirmware Compatibility\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eVersion \u003cstrong\u003e3.5x or earlier\u003c\/strong\u003e\n\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eConfiguration Software\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eEnerVista UR Setup\u003c\/strong\u003e\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDimensions\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e15 cm (L) × 18 cm (W) × 4 cm (H)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eWeight\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\n\u003cstrong\u003e1.15 kg\u003c\/strong\u003e (2 lb 9 oz)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eCountry of Origin\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eUSA\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower system protection\u003c\/strong\u003e — overcurrent, differential, and distance protection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransformer protection\u003c\/strong\u003e — current and voltage monitoring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGenerator protection\u003c\/strong\u003e — phase and ground fault detection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeeder protection\u003c\/strong\u003e — load monitoring and fault identification\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstation automation\u003c\/strong\u003e — SCADA integration and data acquisition\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eThe UR-8AH is compatible with \u003cstrong\u003eolder UR CPU modules\u003c\/strong\u003e (UR-9A, UR-9C, UR-9D) running \u003cstrong\u003efirmware 3.5x or earlier\u003c\/strong\u003e. For newer CPU modules, consider upgraded CT\/VT modules with enhanced diagnostics. Always pair new CT\/VT modules with new CPUs to avoid hardware mismatch errors.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Down:\u003c\/strong\u003e Completely de-energize the UR relay chassis. \u003cstrong\u003eNever install or remove modules while energized.\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eESD Protection:\u003c\/strong\u003e Wear a grounded ESD wrist strap before handling the module.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSlot Verification:\u003c\/strong\u003e Confirm the CT\/VT slot position per the relay manual.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModule Insertion:\u003c\/strong\u003e Slide the UR-8AH into the designated slot, aligning the rear connector with the backplane.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecure Mounting:\u003c\/strong\u003e Tighten the faceplate retention screws.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWiring:\u003c\/strong\u003e Connect CT and VT secondary wiring per the UR series wiring diagram. \u003cstrong\u003eEnsure secondary windings are properly grounded.\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Power on and configure CT\/VT ratios and settings via \u003cstrong\u003eEnerVista UR Setup\u003c\/strong\u003e software.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does the \"8A\" order code signify?\u003c\/strong\u003e\u003cbr\u003e\nA: The \"8A\" designates a \u003cstrong\u003estandard CT\/VT module\u003c\/strong\u003e with 4 CT and 4 VT inputs.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is the UR-8AH compatible with newer UR CPUs?\u003c\/strong\u003e\u003cbr\u003e\nA: The UR-8AH is designed for \u003cstrong\u003eolder CPUs\u003c\/strong\u003e (UR-9A, UR-9C, UR-9D) with \u003cstrong\u003efirmware 3.5x or earlier\u003c\/strong\u003e. For newer systems, consider CT\/VT modules with enhanced diagnostics.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Why is secondary winding grounding important?\u003c\/strong\u003e\u003cbr\u003e\nA: Grounding the secondary winding of CTs and VTs is a \u003cstrong\u003esafety requirement\u003c\/strong\u003e that protects operators from high voltage and prevents equipment damage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the maximum number of CT\/VT modules per chassis?\u003c\/strong\u003e\u003cbr\u003e\nA: The UR platform allows a \u003cstrong\u003emaximum of 3 CT\/VT modules\u003c\/strong\u003e per chassis, supporting up to 6 sets of three-phase voltages and currents.\u003c\/p\u003e\n\n\u003ch3\u003eSelection Tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChoose UR-8AH\u003c\/strong\u003e for \u003cstrong\u003estandard 4CT\/4VT\u003c\/strong\u003e applications with older UR CPUs.\u003c\/li\u003e\n  \u003cli\u003eFor \u003cstrong\u003eenhanced diagnostics\u003c\/strong\u003e, consider the \u003cstrong\u003eUR-8LH\u003c\/strong\u003e or \u003cstrong\u003eUR-8NH\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003eFor \u003cstrong\u003esensitive ground fault protection\u003c\/strong\u003e, consider the \u003cstrong\u003eUR-8G, UR-8J, UR-8M, or UR-8R\u003c\/strong\u003e modules.\u003c\/li\u003e\n  \u003cli\u003eAlways verify \u003cstrong\u003eCPU and firmware compatibility\u003c\/strong\u003e before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; margin:15px 0;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eUR-8AH \/ UR8AH\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eGE Multilin UR Series CT\/VT Module — 4CT\/4VT, 1A\/5A, Standard\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e","brand":"GE Fanuc","offers":[{"title":"Default Title","offer_id":53759531614392,"sku":"UR8AH","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/UR8BV_2.png?v=1783925586","url":"https:\/\/www.globalpetroparts.com\/products\/ge-multilin-ur-series-ct-vt-ur8ah-ur-8ah-processor-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}