Peak asymmetrical current

The CV shows an asymmetrical peak-shaped current wave or wave couple. The current output increases upon increasing the potential scan rate and it is the potential scan rate that contributes dominantly to the peak shape of the... 

Calculation of fault current - rms and peak asymmetrical values... 

Choose the maximum cut-off current to be 45% of the peak asymmetrical fault current... 

The first step is to find the peak asymmetrical prospective fault current seen by the 200A fuses. 

The peak value of the fault current dnring the first cycle of instantaneons cnrrent. This valne determines the peak asymmetrical dnty of the switchgear connected to the generator. This valne is determined by the sub-transient reactance. 

The total of these currents is the peak asymmetrical sub-transient fault current which is 61,375 amps. This is a conservative summation because it assumes that the three peaks occur at the same time. The fault making duty of the main switchboard must be greater than this value of current,... 

Calculation of Fault Current - RMS and Peak Asymmetrical Values... 

A current wave propagating symmetrically about its zero axis, i.e. when the envelopes of the peaks of the current wave are symmetrical about its zero axis, is termed symmetrical (Figure 13.24) and a wave unable to maintain this symmetry is termed asymmetrical (Figure 13.25). 

The peak value of the asymmetrical fault current determined for the first maximum peak may be considered as the momentary peak value of the fault current l%. ... 

Table 28.1 Momentary peak (maximum r.m.s.) current ratings, asymmetrical, for switchgear and metal-enclosed bus systems, based on ANSI-C-37/20C...

In these techniques, the concentrations at the electrode do not immediately attain their extreme values after the start of the experiment. Rather, they change with E ox t according to equation (1). While the steepness of the concentration profiles increases with E (forward scan), simultaneously 8 increases in the quiet solution. The latter effect slows down the increase of i with E, and finally (close to the limiting current region) leads to the formation of a peak with a characterishc asymmetric shape. On the reverse scan (after switching the scan direction ad. Ef), products formed in the forward scan can be detected (B, in the case discussed). 

According to the above, the electrochemical response in the different differential pulse techniques can be very different, and it is worth analyzing the advantages and disadvantages of each method. Regarding the double pulse methods, in normal mode, DNDPV, this has the inconvenience of presenting asymmetrical peaks that can hinder the experimental determination of the peak current. In addition, the peak... 

Further, we studied the nonequilibrium current for large bias-voltages (Fig. 26). Because e iCoulomb interaction, the I-V curve is asymmetric for Vbias> and there are one step and one maximum for the current. The step contributes to one peak for the conductance. When we introduce the Coulomb interaction to the... 

---