f) Open the utility-disconnect swit

f) Open the utility-disconnect switch S1 to initiate the test. Run-on time, tp, shall be recorded as the time between the opening of switch S1 and the point at which the EUT output current drops and remains below 1 % of its rated output levels. Annex C gives some information related to the use of a gate blocking signal.g) For test condition A in Table 5 (100 %), adjust the active load and only one of the reactive load components (either capacitance, C, or inductance, L, may be chosen) to each of the load imbalance conditions shown in the shaded portion of Table 6. The values in Table 6 represent changes from the nominal values determined in steps d) and e) as a percentage of those nominal values. The values in Table 6 show the active and reactive power flow at S1 in Figure 1, with positive value denoting power flow from the EUT to the AC power source. After each adjustment, an island test is run and run-on time is recorded. If any of the recorded run-on times are longer than the one recorded for the rated balance condition, i.e. test f), then the non-shaded parameter combinations also require testing. If no run-on time exceeds the one of balance condition, then this part of the test sequence is deemed to be completed.h) For test conditions B and C, adjust only one of reactive load components (eithercapacitance, C, or inductance, L, may be chosen) by approximately 1,0 % per test, within a total range of 95 % to 105 % of the operating point as shown in Table 7. The values in Table 7 show the reactive power flow at S1 in Figure 1, with positive value denoting power flow from EUT to AC power source. After each adjustment, an island test is run and run-on time is recorded. If run-on times are still increasing at the 95 % or 105 % points, additional 1 % increments shall be taken until run-on times begin decreasing. Test C load conditions may be achieved using inverter control to limit the output power rather than using the power supply to limit the power.