The difference between DC screen and UPS_Chuanyang Electric Co., Ltd.
The difference between DC screen and UPS
Date of publication: 2017-10-30
If you say the DC panel alone, it is just a power distribution panel. Just like AC power distribution, it is AC input and DC output, with some protection components, circuit breakers or fuses in the middle. Each protection component has a monitoring line connected to the monitoring unit. For monitoring, there is usually a backup battery pack in the DC input area, which can support a period of time when the AC power fails..If it is a complete switching power supply, it includes AC screen-rectifier screen-DC screen.The difference between DC screen and UPS is: 1. The application of DC screen and UPS are different; 2. DC screen is mainly to provide operation power or control power for switch cabinets, integrated protection devices, etc.; UPS is mainly to provide backup for computer rooms, computers, etc. power supply.3. The principle is different: the DC panel rectifies AC power to DC power to supply power to external loads; the principle of UPS is to first rectify AC power to DC power, and then through the inverter unit, invert the DC power to AC power to supply power to the external load.Both of them are supplied externally by their battery packs when the mains fails.4. The function and structure of DC screen and USP are different: DC screen is the abbreviation of DC power supply operating system.The common name is smart maintenance-free DC power supply screen, or DC screen for short. The common model is GZDW, and the DC screen is used to supply this DC power supply..The power operation power supply in power plants and substations nowadays is DC power supply, which provides power for control load, power load and DC accident lighting load, etc. It is the basis of contemporary power system control and protection..The DC screen is composed of AC power distribution unit, charging module unit, step-down silicon chain unit, DC feed unit, power distribution monitoring unit, monitoring module unit and insulation monitoring unit.Mainly used in power systems, small and medium power plants, hydropower stations, various substations, and other users who use DC equipment (such as petrochemicals, mines, railways, etc.) Electric protection and fault lighting and other occasions.USP stands for uninterruptible power supply. It is a system equipment that connects batteries (mostly lead-acid maintenance-free batteries) to the host and converts DC power into mains power through the host inverter and other module circuits..Mainly used to provide a stable and uninterrupted power supply to a single computer, computer network system or other power electronic equipment such as solenoid valves, pressure transmitters, etc..When the mains input is normal, the UPS will stabilize the mains and supply it to the load. At this time, the UPS is an AC mains voltage stabilizer, and it also charges the battery inside the machine; when the mains is interrupted (accidental power failure) UPS will immediately use the DC power of the battery to continue supplying 220V AC power to the load by means of inverter zero-switching conversion, so that the load can maintain normal operation and protect the software and hardware of the load from damage; UPS equipment is usually over-voltage or over-voltage. Low can provide protection.Source of this article: Chuanyang Electric Co., Ltd. http://www.chyele.com
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