{"product_id":"abb-red670-line-differential-protection-relay","title":"ABB RED670 Line Differential Protection Relay","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eABB RED670\u003c\/strong\u003e is a line differential protection relay designed for the protection, control, and monitoring of overhead lines and cables in distribution and high-voltage transmission networks. The device delivers phase-segregated current differential protection for heavily loaded lines, multi-terminal configurations, and cable feeders connected to generator block transformers. It supports up to six stabilized current inputs per phase to accommodate multi-breaker arrangements across three to five terminal applications.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB RED670\u003c\/strong\u003e incorporates charging current compensation to maintain high sensitivity on long overhead lines and underground cables. Inter-IED communication for differential schemes operates via the IEEE C37.94 standard with optional dual-channel redundancy. To ensure uninterrupted protection during differential communication channel outages, the relay features fully independent full-scheme distance protection with quadrilateral and mho characteristics. Additional integrated functions include single-, two-, and three-phase auto-reclosing, synchrocheck, breaker failure protection, disturbance recording, and fault location.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePhase-segregated line differential protection with charging current compensation for two to five line terminals\u003c\/li\u003e\n\u003cli\u003eFull-scheme line distance protection with selectable quadrilateral and mho characteristics across six independent zones\u003c\/li\u003e\n\u003cli\u003eSupport for IEEE C37.94 optical communication interfaces with redundant channel capabilities\u003c\/li\u003e\n\u003cli\u003eDual-bias differential slope evaluation with unrestrained instantaneous high-differential tripping\u003c\/li\u003e\n\u003cli\u003eIntegrated transformer in-zone differential protection with 2nd and 5th harmonic restraint\u003c\/li\u003e\n\u003cli\u003eAuto-reclosing functionality for single-, two-, and three-phase tripping with integrated synchrocheck logic\u003c\/li\u003e\n\u003cli\u003eThermal overload, directional overcurrent, undervoltage, overvoltage, and breaker failure backup protection\u003c\/li\u003e\n\u003cli\u003eSupport for IEC 61850-9-2LE process bus interfacing with up to six Merging Units (MU)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTransmission and distribution overhead line protection\u003c\/li\u003e\n\u003cli\u003eUnderground cable feeder protection\u003c\/li\u003e\n\u003cli\u003eMulti-terminal lines and multi-breaker arrangements (one-and-a-half breaker and ring busbar systems)\u003c\/li\u003e\n\u003cli\u003eCable feeders connecting to generator block transformers\u003c\/li\u003e\n\u003cli\u003eT-feeder and line reactor protection using high-impedance differential functions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eABB \/ Hitachi Energy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRelion 670 Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDevice Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLine Differential Protection IED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMain Protection Function\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLine Differential Protection (87L \/ 87LT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackup Protection Function\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFull-Scheme Distance Protection (21)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 6 stabilized current inputs per phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLine Terminal Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 5 terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProcess Bus Communication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIEC 61850-9-2LE (Up to 6 Merging Units)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDifferential Optical Protocol\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIEEE C37.94\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStation Communication Protocols\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIEC 61850-8-1, LON, SPA, DNP3.0, IEC 60870-5-103\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTripping Logic Modes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle-phase, two-phase, three-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermal Protection Temperature Units\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003edegC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eABB RED670 Mechanical Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 30.5907%;\"\u003e\u003cstrong\u003eCase Size\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 14.7679%;\"\u003e\u003cstrong\u003eHeight (h)\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 14.346%;\"\u003e\u003cstrong\u003eWidth (w)\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 24.1297%;\"\u003e\u003cstrong\u003eDepth (d)\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 14.6888%;\"\u003e\u003cstrong\u003eMaximum Weight\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.5907%;\"\u003e\u003cstrong\u003e6U, 1\/2 × 19\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 14.7679%;\"\u003e254.3 mm\u003c\/td\u003e\n\u003ctd style=\"width: 14.346%;\"\u003e210.1 mm\u003c\/td\u003e\n\u003ctd style=\"width: 24.1297%;\"\u003e242 mm\u003c\/td\u003e\n\u003ctd style=\"width: 14.6888%;\"\u003e≤10kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.5907%;\"\u003e\u003cstrong\u003e6U, 3\/4 × 19\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 14.7679%;\"\u003e254.3 mm\u003c\/td\u003e\n\u003ctd style=\"width: 14.346%;\"\u003e322.4 mm\u003c\/td\u003e\n\u003ctd style=\"width: 24.1297%;\"\u003e242 mm\u003c\/td\u003e\n\u003ctd style=\"width: 14.6888%;\"\u003e≤15kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.5907%;\"\u003e\u003cstrong\u003e6U, 1\/1 × 19\" (Full Rack)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 14.7679%;\"\u003e254.3 mm\u003c\/td\u003e\n\u003ctd style=\"width: 14.346%;\"\u003e434.7 mm\u003c\/td\u003e\n\u003ctd style=\"width: 24.1297%;\"\u003e242 mm\u003c\/td\u003e\n\u003ctd style=\"width: 14.6888%;\"\u003e ≤18kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding:\u003c\/strong\u003e Connect the terminal server earth pin directly to the main station grounding bar using short, low-impedance grounding strips.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShielding:\u003c\/strong\u003e Ensure all binary I\/O, CT\/VT analog connections, and communication cables utilize shielded wiring grounded according to substation standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical Interfacing:\u003c\/strong\u003e Route IEEE C37.94 optical fiber cables within dedicated conduit or trays to maintain minimum bending radiuses and prevent mechanical stress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCT Circuit Wiring:\u003c\/strong\u003e Verify secondary CT circuits are shorted prior to disconnecting or servicing terminal blocks to prevent lethal overvoltages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling and Ventilation:\u003c\/strong\u003e Maintain clear vertical airflow clearance above and below the panel-mounted enclosure for thermal dissipation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eABB RED670 Ordering Numbers\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eOrdering No\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFunction ID\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005907-AA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDistance protection zone, quadrilateral characteristic\u003c\/td\u003e\n\u003ctd\u003eZMQPDIS, ZMQAPDIS\u003c\/td\u003e\n\u003ctd\u003eImpedance (Alt 1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005907-BA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDirectional impedance quadrilateral\u003c\/td\u003e\n\u003ctd\u003eZDRDIR\u003c\/td\u003e\n\u003ctd\u003eImpedance (Alt 1 \u0026amp; 4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005907-CA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePhase selection, quadrilateral characteristic with fixed angle\u003c\/td\u003e\n\u003ctd\u003eFDPSPDIS\u003c\/td\u003e\n\u003ctd\u003eImpedance (Alt 1, 2 \u0026amp; Opt 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005907-DA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDistance measuring zone, quadrilateral characteristic for series compensated lines\u003c\/td\u003e\n\u003ctd\u003eZMCPDIS, ZMCAPDIS\u003c\/td\u003e\n\u003ctd\u003eImpedance (Alt 2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005907-EA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDirectional impedance quadrilateral, including series compensation\u003c\/td\u003e\n\u003ctd\u003eZDSRDIR\u003c\/td\u003e\n\u003ctd\u003eImpedance (Alt 2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005907-FA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFullscheme distance protection, mho characteristic\u003c\/td\u003e\n\u003ctd\u003eZMHPDIS\u003c\/td\u003e\n\u003ctd\u003eImpedance (Alt 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005907-GA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFullscheme distance protection, quadrilateral for earth faults\u003c\/td\u003e\n\u003ctd\u003eZMMPDIS, ZMMAPDIS\u003c\/td\u003e\n\u003ctd\u003eImpedance (Alt 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005907-HA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDirectional impedance element for mho characteristic\u003c\/td\u003e\n\u003ctd\u003eZDMRDIR\u003c\/td\u003e\n\u003ctd\u003eImpedance (Alt 3 \u0026amp; Opt 1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005907-KA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAdditional distance protection directional function for earth faults\u003c\/td\u003e\n\u003ctd\u003eZDARDIR\u003c\/td\u003e\n\u003ctd\u003eImpedance (Alt 3 \u0026amp; Opt 1,2,4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005907-LA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMho Impedance supervision logic\u003c\/td\u003e\n\u003ctd\u003eZSMGAPC\u003c\/td\u003e\n\u003ctd\u003eImpedance (Alt 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005907-MA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFaulty phase identification with load encroachment\u003c\/td\u003e\n\u003ctd\u003eFMPSPDIS\u003c\/td\u003e\n\u003ctd\u003eImpedance (Alt 3 \u0026amp; Opt 1,2,4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005907-NA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDistance protection zone, quadrilateral characteristic, separate settings\u003c\/td\u003e\n\u003ctd\u003eZMRPDIS, ZMRAPDIS\u003c\/td\u003e\n\u003ctd\u003eImpedance (Alt 4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005907-PA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePhase selection, quadrilateral characteristic with settable angle\u003c\/td\u003e\n\u003ctd\u003eFRPSPDIS\u003c\/td\u003e\n\u003ctd\u003eImpedance (Alt 4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005907-SB\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh speed distance protection, quad and mho characteristic\u003c\/td\u003e\n\u003ctd\u003eZMFPDIS\u003c\/td\u003e\n\u003ctd\u003eImpedance (Alt 5)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005907-RB\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh speed distance protection for series compensated lines, quad and mho\u003c\/td\u003e\n\u003ctd\u003eZMFCPDIS\u003c\/td\u003e\n\u003ctd\u003eImpedance (Alt 6)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005907-UA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower swing detection\u003c\/td\u003e\n\u003ctd\u003eZMRPSB\u003c\/td\u003e\n\u003ctd\u003eImpedance (Optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005908-AA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAutomatic switch onto fault logic, voltage and current based\u003c\/td\u003e\n\u003ctd\u003eZCVPSOF\u003c\/td\u003e\n\u003ctd\u003eImpedance (Optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005907-VA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower swing logic\u003c\/td\u003e\n\u003ctd\u003ePSLPSCH\u003c\/td\u003e\n\u003ctd\u003eImpedance (Optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005908-CB\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePoleSlip\/Out-of-step protection\u003c\/td\u003e\n\u003ctd\u003ePSPPPAM\u003c\/td\u003e\n\u003ctd\u003eImpedance (Optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005908-GA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOut-of-step protection\u003c\/td\u003e\n\u003ctd\u003eOOSPPAM\u003c\/td\u003e\n\u003ctd\u003eImpedance (Optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005908-DA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePhase preference logic\u003c\/td\u003e\n\u003ctd\u003ePPLPHIZ\u003c\/td\u003e\n\u003ctd\u003eImpedance (Optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005920-AA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eScheme communication logic for distance or Overcurrent protection\u003c\/td\u003e\n\u003ctd\u003eZCPSCH\u003c\/td\u003e\n\u003ctd\u003eScheme Communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005920-BA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePhase segregated Scheme communication logic for distance protection\u003c\/td\u003e\n\u003ctd\u003eZC1PPSCH\u003c\/td\u003e\n\u003ctd\u003eScheme Communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005920-CA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCurrent reversal and weak-end infeed logic for distance protection\u003c\/td\u003e\n\u003ctd\u003eZCRWPSCH\u003c\/td\u003e\n\u003ctd\u003eScheme Communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005920-DA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCurrent reversal and weak-end infeed logic for phase segregated communication\u003c\/td\u003e\n\u003ctd\u003eZC1WPSCH\u003c\/td\u003e\n\u003ctd\u003eScheme Communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005920-EA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLocal acceleration logic\u003c\/td\u003e\n\u003ctd\u003eZCLCPSCH\u003c\/td\u003e\n\u003ctd\u003eScheme Communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005920-FA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eScheme communication logic for residual overcurrent protection\u003c\/td\u003e\n\u003ctd\u003eECPSCH\u003c\/td\u003e\n\u003ctd\u003eScheme Communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005920-GA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCurrent reversal and weakend infeed logic for residual overcurrent protection\u003c\/td\u003e\n\u003ctd\u003eECRWPSCH\u003c\/td\u003e\n\u003ctd\u003eScheme Communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005921-AX\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDirect transfer trip\u003c\/td\u003e\n\u003ctd\u003eDTT\u003c\/td\u003e\n\u003ctd\u003eScheme Communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005922-MX\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConfigurable logic blocks Q\/T\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eLogic Functions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005922-AY\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExtension logic package\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eLogic Functions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005924-HA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircuit breaker condition monitoring\u003c\/td\u003e\n\u003ctd\u003eSSCBR\u003c\/td\u003e\n\u003ctd\u003eMonitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005925-XB\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFault locator\u003c\/td\u003e\n\u003ctd\u003eLMBRFLO\u003c\/td\u003e\n\u003ctd\u003eMonitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK005930-TA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eProcess Bus communication IEC 61850-9-2\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eStation Communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e1MRK002924-YB\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIEC 62439-3 parallel redundancy protocol\u003c\/td\u003e\n\u003ctd\u003ePRP\u003c\/td\u003e\n\u003ctd\u003eStation Communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e","brand":"ABB","offers":[{"title":"Default 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