Translation of "Nullstrom" in English

The zero current I 0 is the same for all the phases 2 to 4 .

The neutral current decreased by 95% and the power consumption by 6%.

By means of the sequential logic module 48, the measured link current actual value IIZW is monitored for zero current and overcurrent.

For this purpose, the zero current is calculated, filtered and added to all the phase current set point values.

The symmetrizing block 27 determines a zero current I 0, which is also fed to the node 18 .

FIG. 6 shows a typical profile of the zero phase-sequence current and voltage when a ground fault occurs.

Each of these samples is rinsed off with a glucose-free solution and the zero current is measured as a base value.

Thus, the measurement of a non-zero current between the Y-circuit node and ground indicates that the network is feeding an asymmetrical load, or a defect has occurred in one of the sectional capacitors in one of the capacitor batteries.

This spray current is, as long as no grounded workpiece is in front of the respective spray gun, very small (so-called zero current).

As a result of taking the difference between an integral (with respect to the current) at a potential at which the oxygen reduction is less pronounced but the zero current is nevertheless present, for example at -0.8 V, and an integral (with respect to the current) at a potential with a normally pronounced oxygen reduction, for example at -1.0 V, the zero effect can in fact be suppressed.

If the calculated zero current is calculated from the measured line currents, then the I P, I S calculated from the selected DIFF and STAB values must be internally multiplied by the factor 3/2.

During the phase balance supervision test, all three phase currents and the neutral current are measured at one point in the line and deviations from an assumed maximum asymmetry between the phases are detected.

By way of example, proceeding from a zero current, a short positive current pulse, followed by a negative current pulse, or vice versa, can also be fed.

Matching of the relay to the vector group of the power transformer, eliminating of a possible zero sequence current and setting of the current transformer ratios are reported to be easily accomplished numerically.

Example embodiments of the power supply device shown in FIG. 1 are explained below in connection with FIGS. 2 to 4, in the case of which embodiments the zero current—identified by I 0 in FIGS. 2 to 4 —can been realized differently.

In this case, at the end of a particle beam extraction cycle, the accelerator magnets are normally driven to saturation and are subsequently driven to zero current.

Normal conditioning processes provide for controlling the magnet to its maximum value (and thus for driving the soft magnetic materials into saturation), and then subsequently reducing it to zero current, in order, from there, to approach the setting value.

According to a further embodiment of the operating method, at least one of the multiplied phase voltage values and/or the zero current are/is filtered before the addition to the phase current values by means of a respective adaptation filter which has an integrating behavior in the vicinity of the network frequency.

In the second variant, also referred to as the qu method, the displacement current is calculated from the instantaneous values of the voltage and the zero phase-sequence capacitance of the line to be investigated, and a Lissajou figure is formed using the measured zero phase-sequence current.

The upper two parts of the diagram show indicators (flags) for the zero voltage U 0 and the zero current I 0 (U 0 Start, I 0 Start).