Functional skills

An additional output voltage
Within the limitations of the input DC voltage shake rule promised , it revealed that the performance of the extra voltage inverter should be able to output . Additional output voltage Solar power inverters accuracy is unchanged following general rules:
( 1 ) In the steady state 12 volt power inverters operation, the voltage should be a limit to shake limitations , such as its deviation does not exceed ± 3% or ± 5% extra value .
( 2 ) the load gradient ( extra load 0% → 50% → 100%) or other troubling elements under dynamic conditions affect the output voltage deviation should not exceed ± 8% additional value or ± 10%.
2 , refused to accept 24 volt power inverters  the value of the output voltage
Under the premise of normal tasks , three-phase voltage value of the inverter output satisfied (the weight of the positive-sequence reverse -weight ratio ) should not exceed the value of a rule , the general performance disclosed in% , such as 5 % or 8 %.
3, the output voltage waveform degrees off true
When the inverter output voltage is sinusoidal , the maximum waveform should rule out the promise of truth degrees ( or harmonic content ) . Mortal with a total output voltage waveform revealed truth degrees out performance , and its value should not exceed 5% ( single phase output promised 10% ) .
4 , an additional output frequency
Inverter output frequency of the AC voltage should be a relatively constant value , for the mortal frequency 50Hz. Under the premise of their normal tasks tend to be within ± 1 %.
5 , the load power factor
Inverter with rational characterization to load or capacitive loads. Under the premise of a sine wave , the load power factor of 0.7 to 0.9 ( hysteresis ) , the additional value of 0.9 .
6 , the additional output 220 volt inverter current ( or additional output capacity )
Revealed that the performance of the extra load power factor output current limitation rules inverter . Some of the inverter is given by the product of the additional output capacity , the unit in VA or KVA disclose performance. Additional capacity of the inverter when the output power factor of 1 ( ie, purely resistive load ) , the additional output voltage is the product of the additional output current .
7 , additional output efficiency
The efficiency of the inverter under the premise of the rule task , the output power to input power ratio, % disclose performance. Additional inverter output capacity efficiency under full load efficiency is at 10% efficiency of the output capacitor, the additional low -load efficiency .
8 , Maintenance
( 1 ) Over Voltage Maintenance: About the same way no voltage inverter , output over-voltage protection should be ways to cut from the negative output over-voltage damage.
( 2 ) Over-current Maintenance: overcurrent inverter maintenance , should be able to guarantee the onset of a short circuit in the load or the current value of real-time initiatives beyond the agreed time , so from inrush current damage .
9 , starting characteristics
Characterization of the inverter can start with functional and dynamic load tasks. The inverter should assure reliable starter in the extra load .
10 , the noise
Power electronic devices in the transformer, the filter inductor , the electromagnetic switch and other components are the fan noise will occur. Normal operation of the inverter , the noise should not exceed 80dB, small inverter noise should not exceed 65dB.