Charger

It uses a microprocessor (CPU chip) as the processing control center, and burns the complicated hardware analog circuit in the microprocessor, and controls the operation of the UPS in the form of a software program. Therefore, the volume is greatly reduced, the weight is greatly reduced, the manufacturing cost is low, and the selling price is relatively low. The inverter frequency of high frequency machine is generally above 20KHZ.

However, the high-frequency machine has poor tolerance under harsh power grid and environmental conditions, and is more suitable for environments with relatively stable power grids, less dust, and suitable temperature/humidity.

Compared with the industrial frequency machine, the high frequency machine: small size, light weight, high operating efficiency (low operating cost), low noise, suitable for office places, high cost performance (low price under the same power), impact on space and environment Small, relatively speaking, high-frequency chargers are susceptible to shock (SPIKE) and transient response (TRANSIENT) caused by copiers, laser printers and motors.

Because the transformer of the power frequency machine isolates the mains from the load, in the harsh environment of the mains, the power frequency machine can provide safer and more reliable protection than the high-frequency function. In some occasions such as medical treatment, the charger is required to have an isolation device , Therefore, for industrial, medical, transportation and other applications, the power frequency machine is a better choice. The choice of the two should be weighed according to different customers, installation environment, load conditions and other conditions.