Description
The ABB 1MRK002246-BD-CCr03 is a relay card, specifically designed for ABB’s REL670 series of protective relays. This industrial workhorse provides robust functionality for various automation applications. Key Features: Compatibility: Seamless integration with ABB REL670 relays ensures easy installation and operation. Reliable Performance: Engineered for industrial environments, the card delivers dependable operation. Automation Powerhouse: Expands the capabilities of your control system for complex industrial processes. Technical Specifications : Voltage compatibility Current ratings Communication protocols Supported functionalities (e.g., tripping, monitoring)
RET670 provides fast and selective protection, monitoring andcontrol for two- and three-winding transformers,autotransformers, generator-transformer units, phase shiftingtransformers, special railway transformers and shunt reactors.The transformer IED is designed to operate correctly over awide frequency range in order to accommodate power systemfrequency variations during disturbances and generator start-upand shut-down. A very fast differential protection function with settable CT ratiomatching and phase shift compensation makes this IED theideal solution even for the most demanding applications. SinceRET670 has very low requirements on the main CTs, nointerposing CTs are required.It is suitable for differentialapplications with multi-breaker arrangements with up to sixrestraint CT inputs. The differential protection function isprovided with 2nd harmonic and wave-block restraint featuresto avoid tripping for magnetizing inrush current, and 5thharmonic restraint to avoid tripping for overexcitation. The differential function offers a high sensitivity for low-levelinternal faults. The unique and innovative sensitive differentialprotection feature of the RET670 provides the best possiblecoverage for winding internal turn-to-turn faults, based on thetheory of symmetrical components . A low impedance restricted ground-fault protection function isavailable as a complimentary sensitive and fast main protectionagainst winding ground faults. This function includes adirectional zero-sequence current criterion for additionalsecurity. Additionally a high impedance differential function is available. Itcan be used as restricted ground fault or, as three functions areincluded, also as differential protection on autotransformers, asdifferential protection for a tertiary connected reactor, as Tdifferential protection for the transformer feeder in a meshcorner or ring arrangement, as tertiary bus protection and so on.
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