## 4 Experimental Results  
As a result of the measurements, the results of \(I_{0 max}\), \(I_{min}\), \(U_{max}\), and \(E\) were obtained and are presented in Table 3.  
Study of Changes in the Value of Surge Currents as a Function of the Prospective Short-Circuit Current  
The prospective short-circuit current \(I_{p}\) was limited due to the HTS tape transition from the superconducting state to the value of the surge current \(I_{0 max}\). The values of the surge currents for the eight values of the prospective short-circuit current for the tested HTS tapes are shown in Figure 8. The green line indicates the values of the prospective short-circuit current (\(I_{p}\)). With the increase in the value of the prospective short-circuit current, the value of the surge current increased. The surge current reached lower values for the SF12100-CF tape with a 4 \(\upmu\)m silver layer (Figure 8). The surge current (\(I_{0 max}\)) recorded on the samples reached values higher than the critical current of the tested HTS tape (which is related to the dynamics of the process of the tape transition from the superconducting state), which is shown in Figure 9a,b. The exit of the tape from the superconducting state was indicated by the appearance of a non-zero voltage value on the sample. The HTS tape transitioned to a resistive state, and the resistance of the tape gradually increased as a result of the heating of the sample due to the current flow (Figure 9). The prospective short-circuit current was limited and reached the value of the surge current \(I_{0 max}\). \begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline
**Prospective** & \multicolumn{3}{c}{**SF12100—4 \(\upmu\)m Silver**} & \multicolumn{3}{c}{**SF12100—2 \(\upmu\)m Silver**} \\
**Short-Circuit Current** & \multicolumn{3}{c}{\(\mathbf{I_{Cmin}\) (77 K) = 312 A}} & \multicolumn{3}{c}{\(\mathbf{I_{Cmin}\) (77 K) = 281 A}} \\ \hline
**\(I_{p}\) (A)** & \(I_{0 max}\) (A) & \(I_{min}\) (A) & \(\mathbf{U_{max}\) (V)} & \(E\) (J) & \(I_{0 max}\) (A) & \(I_{min}\) (A) & \(\mathbf{U_{max}\) (V)} & \(E\) (J) \\ \hline
675 & 527.2 & 195.7 & 4.1 & 83.3 & 504.6 & 154.5 & 4.4 & 74.1 \\
810 & 577.8 & 203.7 & 5.1 & 112.8 & 517.4 & 160.0 & 5.5 & 97.4 \\
945 & 617.4 & 212.5 & 6.1 & 145.7 & 535.7 & 162.2 & 6.5 & 119.0 \\
990 & 636.7 & 222.2 & 6.4 & 158.5 & 545.3 & 163.7 & 6.8 & 129.1 \\
1035 & 646.2 & 222.2 & 6.8 & 169.8 & 552.3 & 167.8 & 7.2 & 137.4 \\
1080 & 662.6 & 223.5 & 7.1 & 181.5 & 555.9 & 169.5 & 7.4 & 145.1 \\
1125 & 667.9 & 228.1 & 7.4 & 193.3 & 562.7 & 172.2 & 7.8 & 154.3 \\
1170 & 683.3 & 230.2 & 7.7 & 207.0 & 565.3 & 172.2 & 8.1 & 163.6 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: The value of the surge current \(I_{0 max}\), the minimum value of the limited current \(I_{min}\), the maximum value of the voltage on the sample \(U_{max}\), and energy \(E\) for HTS tapes SF12100-CF (4 \(\upmu\)m and 2 \(\upmu\)m silver). Figure 10 shows changes in the resistance value of the tested HTS tapes during the first 20 ms. The dynamics of current and voltage changes on the sample can be related to the sample cooling conditions in liquid nitrogen according to the Leidenfrost effect [38]. In the initial phase of the HTS tape transition from the superconducting state, the heat exchange between the tape and liquid nitrogen takes place by natural convection, which occurs at small temperature differences between the HTS tape and the cryogenic liquid. After the current reaches the \(I_{0 max}\) value, the nucleate boiling phase begins. The temperature of the tape increases, but at the same time, a very intensive heat transfer from the HTS tape to nitrogen starts. A decrease in the current value and stabilization of the voltage value on the tape are observed, while the resistance of the tape increases very slightly. Then, in a very short period of time, there is a momentary increase in resistance (transition boiling). For both HTS tapes, the current and voltage values stabilization was observed from about 8 ms, corresponding to reaching the Leidenfrost point.