This product is applicable to the power distributionrooms of 10-500kV substations,power plants,high-rise buildings,residential areas,etc,aswell as smallself-providedpower plants.It is used as the operatingand control power supply and emergency lightingpower supply for high-voltageswitches,relayprotection,automatic devices,etc.At the same time,itcan also beapplied to other places that require DCpower supply. This product complies withthe technical requirementsof standards such as ZBK45017-90"GeneralTechnical Conditions for DC Screens forPower GridSystems",DL/T459-200"Technical ConditionsforOrdering DC Power Supply Screens (Cabinets)",andLS(W)30-40JT "TechnicalConditions forMicrocomputer-Controlled DC Power SupplyCabinets".Theproduct quality reaches the leadinglevel inChina. For this product,the charging device can use high-frequencycharging modules and phase-controlledchargers.For this product the microcomputercontroller can use PLC control type and single-chip microcomputer type.