Sepam - HV/MV Protection and control units (ENG) - Trinet

Disturbance recordingOperationThis function is used to record analog signalsand logical states.Record storage is initiated by the activationof the K865 coil by a triggering event.The stored record begins before the triggeringevent and continues afterwards.The duration of the signal recording before thetriggering event may be adjusted via the pocketterminal, status menu, disturbance recordingheading.The record storage date may also bee accessedvia the pocket terminal, status menu, disturbancerecording heading and via the communication link(refer to “Jbus/Modbus communication”documentation). The date corresponds to the dateof the triggering event.The record comprises the following information:c values samples from the different signals,c date,c characteristics of the recorded channels.The files are recorded in FIFO (First In First Out)shift storage: the oldest record is erased when a newrecord is triggered.TransferFiles may be transferred locally or remotely:c locally: using a PC which is connected to the pocketterminal connector and includes the SFT 2801software package (version more recent than 9802),c remotely: using a software package specific to theremote monitoring and control system.Principlestored recordCharacteristicsrecord durationtime beforetriggering eventrecord contentanalog signals recordedlogical states recordedtriggering event (K865)time86 periodsadjustable from 1 to 85 periods*set-up file:date, channel characteristics,measuring transformer ratiodata file:12 values per period/recorded signal4 to 12 according to the number of acquisition boards:4 signals per current acquisition board4 signals per voltage acquisition board for S363 signals per voltage acquisition board for S26(U21, U32, Vo)16 logic inputs I11 to I18, I21 to I2816 logic data items defined by program logic(Kfr1 to Kfr16)number of stored records2file format COMTRADE IEEE C37.111 - 1997IEC 60255 - 24DisplayThe signals can be displayed from a record by meansof the SFT 2826 software package.SensorsThe disturbance recording function is related to the analog signals connected tothe following connectors:current sensor connector 2 connector 3 connector 41 A or 5 A CT 2B 3B 4BCSH or 2A 3A 4ACT + CSH30 orcore bal. CT+ ACE 990CSP 2L1, 2L2, 2L3 3L1, 3L2, 3L3 —voltage Sepam connector 2 connector 3 connector 4S36 — — 4AS26 — 3A —S36TRand S36TS — 3A 4A* value set to 6 periods for SFT2800 versions earlier than 9940.1/18 Metering functions