For some novices who are new to mechanical equipment, w […]
For some novices who are new to mechanical equipment, what is a high-frequency machine and a power frequency machine is actually not clear.
The difference between high frequency machine and industrial frequency machine
1. High-frequency machine: Use high-frequency switch technology to replace the UPS of the power frequency transformer in the ballast and inverter power supply with high-frequency switch components. It is also called the high-frequency machine. The high-frequency machine is light in weight and high in efficiency.
2. Power frequency machine: choose the power frequency transformer as the UPS alias DC machine for the ballast and inverter power supply components. The key features are the stable and reliable main output power components, the overload working ability and the strong impact resistance working ability.
High frequency machine VS DC machine
1 The high-frequency machine does not have an isolation transformer, and its output neutral line has high-frequency current. The key is the pulse current influence of the voltage power network, the pulse current of the UPS ballast and high-frequency inverter, and the pulse current of the load. And so on, it affects the working voltage not only the marked value is high, and it cannot be cleared. The output zero-ground working voltage of the DC machine is lower, and there is no high frequency weight, which is more critical for the communication safety of the computer network.
2 The output of the high-frequency machine is not protected by the transformer. If the power electronics of the inverter power supply has a short-circuit failure, the high AC voltage on the DC bus duct (DC BUS) is immediately added to the load. It is a safety risk, while the DC machine is looking for Not this problem.
3 Power frequency machine has strong ability to resist load impact.