UPS (Uninterruptible Power System) is an uninterruptible power supply with constant voltage and constant frequency, which is mainly composed of energy storage device and inverter. It is mainly used to provide uninterrupted power supply for computers, computer network systems or other power electronic equipment. When the mains input is normal, UPS will stabilize the mains and provide it to the load. At this time, UPS is an AC mains voltage regulator, and it also charges the battery in the machine. When the power supply is interrupted (power failure), UPS will immediately provide 220V alternating current to the load through inverter conversion to keep the load working normally and protect the hardware and software of the load from being damaged. UPS equipment usually provides overvoltage and undervoltage protection.
UPS can be divided into three categories according to its working principle: standby, online and online interaction.
According to the control system, it is divided into high frequency type and power frequency type.
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Sander Emerson APC and other domestic brands? How is the overall market?
Suntech's domestic market share is the first, followed by Schneider (including Schneider's apc and Meg Meilan Rilan), and Emerson's third place should be no problem. These three brands are all international brands. The first domestic brands are Kelon Ke Hua and Delta, and the second should be Costar or Dongfang Yi.
At present, the three largest ups companies in the world are Eaton (Eaton owns three brands of Powerware-original Exeter, stk Shante and Pulsar-original Meilan Rilan models below 20KVA), Schneider (apc and mge original Meilan Rilan models above 20KVA) and Emerson.