Sine wave inverter power supply

1. Main features of sine wave inverter power supply
■ Using CPU control, the circuit is simple and reliable;
■ Using SPWM pulse width modulation technology, the input is a pure sine wave with stable frequency and voltage regulation, filtering out noise and low distortion;
■ Built-in bypass switch, fast switching between mains and inverter;
■ Main power supply type and battery main supply type:
A) Mains power supply type: when there is mains power, it is in the mains output, and automatically switches to the inverter output when the mains input fails;
B) Main battery supply type: Inverter output when there is mains power, automatic when the DC input fails
■ switch to mains output;
It is allowed to cut off the DC in the power-on state, and automatically switch to the mains bypass, without affecting the power supply of the load, and it is convenient to maintain and replace the battery;
■ If the battery voltage is too high or too low, the inverter power supply will turn off the output. If the battery voltage is returning to normal, the power supply will automatically output;
■ When the load is overloaded, the inverter power supply will turn off the output. After 50 seconds of eliminating the overload, the power supply will automatically resume the output. This function is especially suitable for unattended communication base stations;
■ Support communication function, provide RS232 interface (PIN2, 3, 5), use monitoring software to understand the working condition of the power supply in real time; (Note: 500VA models in this series do not have this function at the moment)
■Provide two sets of passive dry nodes for DC input fault (RS232PIN6, 7) and AC output fault alarm (RS232PIN8, 9)
■Supports no-DC power-on function, and can run with only mains power. This function allows the inverter power supply to be put into use first, and then the battery is installed. (Note: 500VA models in this series do not have this function at the moment)