To prevent closing of a circuit breaker after a trip, the function offers a lockoutfunction.14.1.2.1 Three-phase tripping M14828-7 v10Connect the inputs from the protection functions to the input TRIN. The TMGAPCfunction block is used to combine up to 32 inputs into one output. Connect theoutput TRIP to the binary outputs on the IO board.This signal can also be used for other purposes internally in the IED. An examplecould be the starting of breaker failure protection. The three outputs TRL1, TRL2,TRL3 will always be activated at every trip and can be utilized on individual tripoutputs if single-phase operating devices are available on the circuit breaker evenwhen a three-phase tripping scheme is selected.Set the function block to Program = 3 phase and set the required length of the trippulse to for example, tTripMin = 150ms.The typical connection is shown below in figure 128.BLOCKBLKLKOUTTRINTRINL1TRINL2TRINL3PSL1PSL2PSL31PTRZ1PTREFP3PTRSETLKOUTRSTLKOUTSTDIRTRIPSMPPTRCTRL1TRL2TRL3TR1PTR2PTR3PCLLKOUTSTARTSTL1STL2STL3FWREVProtection functions with 3 phasetrip, for example time delayedovercurrent protectionTMAGAPCSTNIEC05000544-4-en.vsdxIEC05000544 V4 EN-USFigure 128: Tripping logic SMPPTRC is used for a simple three-phase trippingapplication14.1.2.2 Single- and/or three-phase tripping M14828-11 v7The single-/three-phase tripping operation mode will give single-phase tripping forsingle-phase faults and three-phase tripping for multi-phase fault. This operatingmode is always used together with a single-phase autoreclosing scheme.The single-phase tripping operation mode can include different options and the useof the different inputs in the function block. Inputs TRINL1, TRINL2 and TRINL3Section 14 1MRK 505 393-UEN BLogic296 Line differential protection RED650 2.2 IECApplication manual
