How to choose the correct ups power inverter mainly pay attention to the following points .
1 , the rated output voltage: within a solar controller predetermined fluctuation range of the input DC voltage is allowed , it means that the rated voltage of the inverter should be output . The stability of rated output voltage accuracy is generally defined as follows : In steady-state operation , the voltage fluctuation range should be a limit , such as the deviation does not exceed the rating of ± 3% or ± 5%. Under load mutations or other interfering factors affecting the dynamics of the output voltage deviation should not exceed the rating of ± 8% or ± 10%.
2 , the output voltage imbalance : Under normal operating conditions, the inverter output phase voltage unbalance ( reverse component of the ratio of positive sequence component ) should not exceed a specified value , usually expressed in% as 5 % or 8 %.
3 , the output voltage waveform distortion : When the inverter output voltage is sinusoidal , shall specify the maximum allowable waveform distortion ( or harmonic content ) . solar power inverter Usually to a total distortion of the output voltage waveform that its value should not exceed 5% ( 10% single phase output enable ) .
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