ABB REU 610 Technical Reference Manual

Also see for REU 610: Installation manual Technical reference manual Operator's manual Technical reference manual Operator's manual

Contents

ABB REU 610 Technical Reference Manual Manual pdf 52 page image

5.1.9. Demand valuesThe relay provides three different kinds of demand values.The first value shows the average voltage of all three phase-to-phase voltagesmeasured during one minute. The value is updated once a minute.The second value shows the average voltage during an adjustable time range,ranging from 0 to 999 minutes, with an accuracy of one minute. This value isupdated at the expiration of each time range.The third value shows the highest one-minute average voltage valuemeasured during the previous time range. However, if the time range is set tozero, only the one-minute and the maximum average voltage value is shown.The maximum value is the highest one-minute mean value since the last reset.The average voltage values can be set to zero through serial communicationusing SPA parameter V102. The average voltage values are also reset if SPAparameter V105 is changed or the relay is reset.5.1.10. Commissioning testsThe following two product functions can be used during the commissioningof the relay: function test and digital input test.The function test is used for testing the configuration as well as theconnections from the relay. By selecting this test, the internal signals from theprotection elements, the external trip signal and the IRF function can beactivated one by one. Provided that the signals have been set to be routed tothe output contacts (PO1...PO3 and SO1...SO5) with the switches of SGR1...SGR8, the output contacts are activated and their corresponding event codesare generated when the test is run. However, activation of the internal signalsfrom the protection elements, the external trip signal and the IRF function donot generate an event code.The digital input test is used for testing the connections to the relay. The stateof the digital inputs can be monitored via the HMI.Refer to the Operator’s Manual for instructions on how to perform the tests.5.1.11. Disturbance recorder5.1.11.1. FunctionThe relay features an integrated disturbance recorder which continuouslycaptures the curve forms of the voltages as well as the status of both internalsignals and the external digital input signals and stores these in the memory.52REU 610 Voltage RelayTechnical Reference Manual - ANSI Version1MRS755972