Page 110 - MCCB-XT2-XT4
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ABB | SACE Tmax XT

                             Spikes The Spikes counter should be understood as increase of the RMS value of the line-to-line voltage above
                                    the set V Spike Threshold threshold for less than 40 ms (short time voltage spike).
                                    The counter is available in the two submenus Counters - Day -1 and Counters - Cumulative (previous day
                                    or cumulative)
                                           NOTE: Since the counter is based on the RMS value calculation, two rapid voltage spikes of
                                           equal duration may be evaluated differently, depending on their amplitude:

                                                     Increase detected               Increase not detected









                                                    t                                t



                                    Additional List

                                     Counters (Interrup-  Description
                                     tions)
                                     Last time stamp    Date and time of last recording of the Spikes counter
                                     Last value         Value of last swell above Spikes [V] threshold
                                     Last duration      Duration of last swell above Spikes [ms] threshold
                                     Actual number of S.  Spikes count for the current day
                                     Actual [day -2 ... day -7]  Spikes count of the last seven days of activity, calculated using the
                                     number of S.       internal clock of the unit




                              Sags Certain counters  relating to sags are  available  in the  Counters -  Day -1 and Counters -  Cumulative
                                    submenus:
                                     Counters (Interrup-  Description
                                     tions)
                                                        Counts the number of times that any line-to-line voltage falls below the V
                                     Sags Short
                                                        sag Th Short threshold for longer than V sag dur Short
                                                        Counts the number of times that any line-to-line voltage falls below the V
                                     Sags Middle
                                                        sag Th Middle threshold for longer than V sag dur Middle
                                                        Counts the number of times that any line-to-line voltage falls below the V
                                     Sags Long
                                                        sag Th Long threshold for longer than V sag dur Long
                                    The count refers to the reference menu interval (previous day or cumulative)
                                           NOTE: since an event may fall under more than one category, only the counter of the main
                                           type (Long > Middle > Short) is increased

                                    Additional List
                                     Counters (Interrup-  Description
                                     tions)
                                     Last time stamp    Date and time of last recording of the Sags Short counter
                                     Sags Middle        Value of last sag below the Sags Short [V] threshold
                                     Sags Long          Duration of last sag below the Sags Short [ms] threshold
                                     Actual number of S.  Sags Short count for the current day
                                     Actual [day -2 ... day -7]  Sags Short count of the last seven days of activity, calculated using the
                                     number of S.       internal clock of the unit


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