| Three Significant Differences in Online UPSs and Line Interactive (Part Two)
In the previous section, we review the overview of the experiment and the issues discussed. We also outlined the first experiment; in this section we will continue to test the differences between online and offline UPS. |
| Features discussed include:
1. Time delay switching power supply switch between input power line and battery bank and vice versa (transfer switch delay between normal mode and battery mode) 2. Output voltage stabilization 3. Acceptable input voltage range for online and line interactive UPS The following training film describes these differences in detail: |
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| In the first experiment, we examined the feature of “Time delay of power supply switch between input power lines and battery bank”.
In the second experiment, we compare “UPS output voltage stabilization based on input amplitude changes”. Since the output voltage stabilization in offline and interactive UPS is only done with one or two step transverse coil count changes by the internal relay, this change is not linear and uniform, but in online UPS This is done by changing the Duty cycle, which is controlled by its fast internal microprocessors, and we will see fast and accurate voltage UPS stabilization online. |
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| In the third experiment, we compare the “acceptable range of input voltage” for online UPS with offline and interactive UPS.
In online UPS due to the presence of rectifier circuits and PFC, a wider range of input voltages is acceptable for UPS and UPS does not use its own battery bank, while in offline and offline UPS. Interactive rectifiers and PFC do not exist and use batteries. |