Camille Bauer SINEAX DM5000 Device Handbook

Also see for SINEAX AM3000: Operating instructions Operating instructions

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Camille Bauer SINEAX DM5000 Device Handbook Manual pdf 78 page image

PM 1001484 000 08 Device handbook SINEAX DM5000 78/96A4 Mean values and trendMeasured quantityPresentTrendmaxminHistoryActive power I+IV 10s...60min. 1) ● ● ● ● 5Active power II+III 10s...60min. 1) ● ● ● ● 5Reactive power I+II 10s...60min. 1) ● ● ● ● 5Reactive power III+IV 10s...60min. 1) ● ● ● ● 5Apparent power 10s...60min. 1) ● ● ● ● 5Mean value quantity 1 10s...60min. 2) ● ● ● ● 1….Mean value quantity 12 10s...60min. 2) ● ● ● ● 11) Interval time t1 2) Interval time t2The device calculates automatically the mean values of all system power quantities. In addition up to 12further mean value quantities can be freely selected.Calculating the mean-valuesThe mean value calculation is performed via integration of the measured instantaneous values over aconfigurable averaging interval. The interval time may be selected in the range from 10 seconds up to onehour. Possible interim values are set the way that a multiple of it is equal to a minute or an hour. Meanvalues of power quantities (interval time t1) and free quantities (interval time t2) may have differentaveraging intervals.SynchronizationFor the synchronization of the averaging intervals the internal clock or an external signal via digital inputmay be used. In case of an external synchronization the interval should be within the given range of onesecond up to one hour. The synchronization is important for making e.g. the mean value of powerquantities on generating and demand side comparable.TrendThe estimated final value (trend) of mean values is determined by weighted addition of measurements ofthe past and the present interval. It serves for early detection of a possible exceeding of a given maximumvalue. This can then be avoided, e.g. by switching off an active load.HistoryFor mean values of system powers the last 5 interval values may be displayed on the device or read viainterface. For configurable quantities the value of the last interval is provided via communication interface.Bimetal currentThis measured quantity serves for measuring the long-term effect of the current, e.g. for monitoring thewarming of a current-carrying line. To do so, an exponential function is used, similar to the charging curveof a capacitor. The response time of the bimetal function can be freely selected, but normally itcorresponds to the interval for determining the power mean-values.Measured quantityPresentmaxmin1L2L3Lb3Lb.P3Lu3Lu.A4Lb4Lu.O4LuBimetal current IB, 1...60min. 3) ● ● √ √ √ √Bimetal current IB1, 1...60min. 3) ● ● √ √ √ √ √Bimetal current IB2, 1...60min. 3) ● ● √ √ √ √ √Bimetal current IB3, 1...60min. 3) ● ● √ √ √ √3) Interval time t3