Non professional staff. Detour. (specifically)What are the differences between 1.UPS power supply machines and high frequency machines?2., the advantages and disadvantages of modular UPS is the use of double bus wiring method?What's the difference between 3.UPS hot backup and PC / PC?4. what is the purpose of isolating transformers? On what occasion?Good answer, extra points... Thank you. More points Oh!
What are the differences between UPS power supply machines and high frequency machines?This is not defined in the current national and international standards and is not used abroad. This is only a nonstandard name for use in the country. Popular speaking, that is, the inverter output transformer UPS, known as the frequency machine, there is no inverter output transformer UPS is high-frequency machines. The high frequency machine usually adopts IGBT to carry on the high frequency switch rectification, and complete the function of the power factor correction at the same time. But the power frequency machine adopts the thyristor to carry on the full control bridge rectifier, and has the bigger harmonic pollution to the power grid. Because the high frequency machine has no output transformer, it saves the resources, reduces the weight and improves the efficiency. It is a type of energy saving and environmental protection, and it is also the trend of development. The major UPS manufacturers in the world have introduced high-power high-frequency machines.
The advantages and disadvantages of modular UPS? Is it a two bus connection method?You can grow in accordance with the user's business growth, to achieve a gradual investment, high load rate and improves the UPS efficiency, reduce operating costs, a UPS will be able to achieve redundancy module level, improve the usability of the system, the user can directly replace the module, maintenance and recovery system function module, power; the battery module, the main control circuit board, static switch, power, communication circuit board, power distribution module can realize the online hot plug and replacement, has great flexibility and availability.
The power frequency machine is the direct use of power frequency (50Hz), the DC battery into alternating current, and then transformer voltage to 220 volts, 50 Hz domestic alternating current. The advantage is that the structure is simple and a bit like a transformer power supplyHigh frequency machine is the first battery DC through high frequency boost circuit to boost the high frequency 220 volts pulse, filtered to get 300 volts direct current voltage, and then turn it into 220 volts, 50 Hz home AC. The advantage is that the output power can be adjusted automatically, and the energy saving effect is good. It is a bit like switching power supply
What is the purpose of isolating transformers? On what occasion?Voltage matching, output of special required voltage, industrial use of many; transform grounding system, industrial use of more; reduce zero earth voltage, computer data center for more.
What's the difference between UPS hot backup and PC / PC?Thermal backup is to improve the reliability of the system, the power of the system can not be increased; parallel can improve the reliability of the system and achieve capacity increase.
