{"product_id":"ge-multilin-ur7dh-ur-7dh-inter-relay-communications-module","title":"GE Multilin UR7DH UR-7DH Inter-Relay Communications Module","description":"\u003ch2\u003eGE Multilin UR7DH UR-7DH Inter-Relay Communications Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eGE Multilin UR7DH\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eUR7DH\u003c\/strong\u003e Inter-Relay Communications Module, operates as a dedicated hardware component for high-speed optical data exchange between GE Multilin Universal Relay devices using direct fiber communication links.\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\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eGE Multilin UR7DH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eGeneral Electric Multilin (GE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eInter-Relay Communications Module (COMMS 7D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eMarkham, Ontario, Canada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e6 in L x 7 in W x 1.5 in H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eModule power supplied through UR chassis backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlatform Compatibility\u003c\/td\u003e\n\u003ctd\u003eGE Multilin Universal Relay (UR) Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eDirect fiber serial link\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Source\u003c\/td\u003e\n\u003ctd\u003e1300 nm single-mode laser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Count\u003c\/td\u003e\n\u003ctd\u003e1 channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiber Type\u003c\/td\u003e\n\u003ctd\u003eSingle-mode fiber (SMF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Protocol\u003c\/td\u003e\n\u003ctd\u003eGE Multilin Direct High-Speed Inter-Relay Protocol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm Factor\u003c\/td\u003e\n\u003ctd\u003eUR chassis slot insertable module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProfinet \/ EtherNet-IP Deterministic Networks and Backplane Integration\u003c\/h3\u003e\n\u003cp\u003eThe UR7DH module integrates with the GE Multilin Universal Relay architecture through the UR chassis backplane interface. The module provides deterministic peer-to-peer communication without external protocol converters, supporting protection schemes requiring direct relay-to-relay signal exchange.\u003c\/p\u003e\n\u003cp\u003eThe optical interface uses a 1300 nm single-mode laser transmitter for low attenuation fiber links. The fiber serial connection provides electromagnetic interference resistance and maintains signal integrity in substation environments.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What communication medium is supported by the GE Multilin UR7DH?\u003cbr\u003eA: The module uses single-mode fiber (SMF) with a 1300 nm optical laser interface for direct high-speed inter-relay communication.\u003c\/p\u003e\n\u003cp\u003eQ: Can the UR7DH operate as a standalone communication device?\u003cbr\u003eA: No. The UR7DH is designed as a UR chassis slot insertable module and requires installation within a compatible GE Multilin Universal Relay platform.\u003c\/p\u003e\n\u003cp\u003eQ: What protection applications use the UR7DH communication link?\u003cbr\u003eA: The module supports relay communication schemes including line current differential protection, direct transfer tripping (DTT), permissive overreaching transfer trip (POTT), and inter-relay interlocking.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the UR7DH module only in a compatible GE Multilin Universal Relay chassis slot.\u003c\/li\u003e\n\u003cli\u003eVerify chassis power removal before module insertion or removal to prevent electrical damage.\u003c\/li\u003e\n\u003cli\u003eRoute fiber optic cables separately from high-voltage conductors and high-current wiring to reduce mechanical stress and accidental fiber damage.\u003c\/li\u003e\n\u003cli\u003eMaintain proper fiber bend radius according to the installed cable specification.\u003c\/li\u003e\n\u003cli\u003eUse appropriate fiber cleaning procedures before connecting optical interfaces.\u003c\/li\u003e\n\u003cli\u003eBond and ground the relay enclosure according to substation protection panel grounding practices.\u003c\/li\u003e\n\u003cli\u003eConfirm communication link status after installation using relay configuration and diagnostic functions.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":44497860722776,"sku":"UR7DH","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/UR7JH_da57b9cd-172d-4c49-ae97-48349bce72e6.jpg?v=1785830629","url":"https:\/\/www.industriaxplc.com\/ar\/products\/ge-multilin-ur7dh-ur-7dh-inter-relay-communications-module","provider":"IndustriaX Limited","version":"1.0","type":"link"}