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

Cumulative breaking current and number of breaksOperationThis function indicates the cumulative numberof breaking operations and the cumulative breakingcurrent in square kiloamperes (kA) 2 for five currentranges.It is based on measurement of the fundamentalcomponent.The current ranges are:c 0 < I < 2Inc 2In < I < 5Inc 5In < I < 10Inc 10In < I < 24Inc I > 24InThe function also provides the total number of breaksand the cumulative total of breaking current in (kA) 2 .Refer to switchgear documentation for useof this information.The function is activated by the control logicK855 coil.Each value is saved in the eventof a DC power failure.ReadoutCharacteristicsnumber of breaksrange 0 to 99999(kA) 2range 0 to 9999 (kA) 2unit primary (kA) 2resolution primary 0.0001 (kA) 2pocket terminal formatsignificant digitsaccuracy (1) ±10%(1)at In, in reference conditions (IEC 60255-6).SensorsThis measurement is related to the currentsin the circuits that are connected to the followingconnectors:sensorCTCSPconnector2B2L1, 2L2, 2L3The measurements may be accessed:c via the pocket terminal, add. reading menu,break. nb and (kA) 2 heading.c the communication link.The cumulative values are reset by the clear buttonon the pocket terminal, in parameter setting mode,if the function is displayed.** available as of version 9940 SFT2800.Metering functions1/15