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L30 Line Current Differential Relay
White Papers/Case Study

File ReferenceTitlePublish DateFormat
CTSatTolWhite Paper: CT Saturation Tolerance for 87L Applications04/15/2015 [788k]
Explore requirements for the line current differential function (87L) with regards to the tolerance to CT saturation. Typically, requirements provided by the manufacturers or standards are to eliminate CT saturation completely by proper sizing of CTs
87LshuntWhite Paper: 87L Application on Long Transmission Line with Series Capacitor Banks, Shunt Reactors05/15/2014 [806k]
Advantages and disadvantages of including or excluding reactors in the 87L protection zone. Solutions to compensate charging current, reactor switching, sub-harmonic frequency transients, and effects of MOV conducting.


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