{"product_id":"ge-multilin-ur-8rh-universal-relay-ct-vt-module","title":"GE Multilin UR-8RH Universal Relay CT\/VT Module","description":"\u003ch2\u003eGE Multilin UR 8RH CT\/VT Input Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for sensitive‑ground CT\/VT acquisition in UR‑series protection networks, the \u003cstrong\u003eGE Multilin UR 8RH\u003c\/strong\u003e (\u003cstrong\u003eUR 8RH\u003c\/strong\u003e CT\/VT Input Module) provides direct analog front‑end processing for phase, ground, and auxiliary measurement channels with enhanced diagnostic capability.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eUR‑8RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eGE Multilin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eOntario, Canada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e2 lb 9 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e6 in × 7 in × 1.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eUR Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eCT\/VT Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSoftware\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eEnerVista UR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSensitive Ground Input\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e8CT high‑sensitivity channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eDiagnostics\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eEnhanced analog diagnostics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eAnalog Capacity\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eUp to 24 CT\/VT analog signals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003ePlug \u0026amp; Play\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eStandard UR auto‑configuration behavior\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEddy‑Current Probe Scaling \u0026amp; Cross‑Talk Suppression\u003c\/h3\u003e\n\u003cp\u003eAlthough the UR‑8RH is an electrical‑measurement module, GE Multilin’s analog‑conditioning design follows principles similar to turbine supervisory interfaces. Sensitive‑ground channels use high‑resolution scaling comparable to eddy‑current probe biasing, ensuring stable detection of high‑impedance ground faults. Channel‑to‑channel isolation suppresses cross‑talk, preventing induced noise from adjacent CT circuits. Reference‑voltage validation—analogous to gap‑voltage checks in probe systems—supports deterministic scaling across all CT\/VT inputs, improving relay element performance under transient conditions.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What makes the UR‑8RH different from older CT\/VT modules?\u003c\/strong\u003e A: It includes sensitive‑ground 8CT capability and enhanced diagnostics, requiring firmware 4.0x or newer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the UR‑8RH be used with older CPU modules?\u003c\/strong\u003e A: It is recommended to pair new CT\/VT modules with newer CPUs to avoid hardware‑mismatch errors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the UR‑8RH support hot‑swap insertion?\u003c\/strong\u003e A: No. The relay must be de‑energized before inserting or removing the module.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDe‑energize the relay before handling the module to avoid transient analog‑input disturbances.\u003c\/li\u003e\n\u003cli\u003eRoute CT\/VT wiring separately from digital I\/O conductors to reduce noise coupling.\u003c\/li\u003e\n\u003cli\u003eMaintain shield continuity and ground shields at a single termination point to avoid ground‑loop interference.\u003c\/li\u003e\n\u003cli\u003eVerify terminal torque and polarity on CT\/VT connections before energizing.\u003c\/li\u003e\n\u003cli\u003eUse EnerVista UR to validate sensitive‑ground scaling and confirm correct phasing during commissioning.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":48164763402430,"sku":"UR8RH","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-07-06_10-09-43_f390a607-ad54-4017-b5a4-4fb88965a80f.png?v=1783304783","url":"https:\/\/www.autooiltech.com\/ar\/products\/ge-multilin-ur-8rh-universal-relay-ct-vt-module","provider":"AutoOilTech Limited","version":"1.0","type":"link"}