Section 5 Testing IED operation5.1 Preparing the IED to verify settingsIf a test switch is included, start preparation by making the necessary connectionsto the test switch. This means connecting the test equipment according to a specificand designated IED terminal diagram.Put the IED into the test mode to facilitate the test of individual functions andprevent unwanted operation caused by other functions. The test switch should thenbe connected to the IED.Verify that analog input signals from the analog input module are measured andrecorded correctly by injecting currents and voltages required by the specific IED.To make testing even more effective, use PCM600. PCM600 includes the Signalmonitoring tool, which is useful in reading the individual currents and voltages,their amplitudes and phase angles. In addition, PCM600 contains the Disturbancehandling tool. The content of reports generated by the Disturbance handling toolcan be configured which makes the work more efficient. For example, the tool maybe configured to only show time tagged events and to exclude analog informationand so on.Check the disturbance report settings to ensure that the indications are correct.For test functions and test and signal parameter names, see the technical manual.The correct initiation of the disturbance recorder is made on start and/or release ortrip from a function. Also check that the wanted recordings of analogue (real andcalculated) and binary signals are achieved.The IEDs in the 650 series can have between 1 to 4 individual parameter settinggroups prepared with full sets of different parameters for all functions. The purposeof these groups is to be able to handle different power system load conditions tooptimize the parameters settings of the different functions for these different powersystems conditions (for example summer/winter and day/night).Parameters can be entered into different setting groups. Make sureto test functions for the same parameter setting group. If needed,repeat the tests for all different setting groups used. The differencebetween testing the first parameter setting group and the remainingis that there is no need for testing the connections.During testing, observe that the right testing method, that corresponds to the actualparameters set in the activated parameter setting group, is used.1MRK 511 248-UEN - Section 5Testing IED operation31Commissioning Manual