DC panel [1] is the DC power supply operating system for short. GM called intelligent maintenance-free DC power panel, called DC-screen, universal model for GZDW. Simply put, DC panel is to provide a stable DC power supply equipment. (When the input is 380V power directly into 220V, when the input (mains and standby power) are not entered directly into a battery-powered - DC 220V: in fact it can be said is an industry dedicated emergency power supply) . DC panel power plants and substations in the power supply operation today are used in DC power supply, which is to control the load and power load and DC emergency lighting load to provide power, is the contemporary power system control, basic protection. DC panel consists of cross-distribution unit, charging module unit, diode chain unit, DC feed unit, power distribution monitoring unit, the monitoring module unit and insulation monitoring unit. Mainly used in power systems for small and medium power plants, hydropower stations, various substations, and other user-DC devices (such as petrochemical, mining, railways, etc.), applicable to switches open and close, and the secondary circuit of instruments, meters, following electrical protection and fault lighting and other occasions. DC-screen role of information is a new digital control, protection, management, new DC system measurements. Monitoring host part highly integrated, single board structure using (All in one), containing insulation monitoring, battery inspection, grounding line, battery activation, silicon chain regulator, the central computer signal and other functions. Host Configuration large LCD touch screen, a variety of operating conditions and parameters are character display, the overall design is simple and convenient, friendly interface, in line with user habits. DC-screen system for remote detection and control provides powerful features, and with a remote control, remote adjustment, telemetry, and remote communication interface. Available via remote communication interface in the distance DC power system operating parameters, but also through the interface to set and modify operating status and value to meet the electricity power system automation and unmanned substation requirements; equipped with standard RS232 / 485 serial Line and Ethernet interfaces can be easily incorporated into the power plant automation system. DC panel consisting of: charging cabinet - charging module - Monitoring Module - battery pack - diode chain DC panel Main features: System Features High reliability: The modular design of switching power supply, N + 1 hot backup. Charging module can hot swap, significantly reduce the average maintenance time. Power bus and control bus can be individually powered directly by the charging module, pressure relief devices by hot backup. Low hardware difference between independent current technology, the module maximum output current imbalance is better than 5%. Reliable lightning and electrical insulation, insulation monitoring device capable of real-time monitoring system optional insulation, ensure that systems and personal safety. System design using the IEC (International Electrotechnical Commission), UL and other international standards, reliability and security fully guaranteed. High intelligence: Monitor module using a large screen LCD display, sound and light alarm. Parameters can be set for each part of the system through the monitoring module. Module has a smooth adjustable output voltage and current capabilities, with battery charging temperature compensation. Have multiple extension port, you can access a variety of external intelligent devices (such as cell tester, insulation monitoring devices, etc.). Modern power electronics and computer network technology, providing power system "telemetry, remote control, remote, remote tune" support unattended. Automatic battery management and protection, real-time automatic detection of the battery terminal voltage, charge and discharge current, and float charging batteries are intelligent control with battery over-voltage and over-current charge audible alarm. The system uses the built-in insulation monitoring device monitoring, battery testing, grounding line, battery activation, silicon chain regulator, central functions such as signal unit, greatly facilitate the users; system uses a unique "Link" connection technology, which greatly facilitates large capacity DC system wiring within the screen, user-friendly maintenance. ● Charging Module using natural cooling, no substantial increase in the average time to failure, but also for the environment is relatively harsh place; ● charging module, hot-swappable, significantly reduced the average time to repair; ● using the latest soft-switching technology, the main components using high quality brand-name products; ● low hardware difference between independent current technology, the module maximum output current imbalance is better than ± 5% ● Lightning and highly reliable electrical insulation protective measures, real-time monitoring system insulation insulation monitoring device, ensure systems and personal security; ● monitoring module with large-screen LCD touch screen display, live voice alarm; ● monitoring program using object-oriented design, modular programming, is conducive to maintenance and upgrade program; ● available for each part of the system by monitoring module parameter settings, with a detailed online help function; ● with smooth adjustment of output voltage and current, battery automatic temperature compensation, and other advanced features; ● modern electronic technology and computer technology, to achieve power system "telemetry, remote control, remote , remote adjustment, "as well as unattended; ● automatic battery management and protection, real-time automatic monitoring of battery terminal voltage, charge and discharge current, and control both the battery charge and float with battery over-voltage and over-current charging sound and light alarm. ● device can be programmed via the public telephone line support, remote maintenance diagnostics. DC-screen monitor module Technical Specifications 1) AC Accuracy: within 220V and 380V ± 15% range of ≤ 1.0% 2) DC Accuracy: Mother control voltage: 110V ~ 240V within range ≤ 0 .5% co-parent Voltage: 286V ~ 198V in the range of ≤ 0.5% charge voltage: 286V ~ 198V range of ≤ 0.5% battery voltage: 12.5V ± 10% in the range of ≤ 0.5% control master, charging current: within 10% Ie ~ 100% Ie range of ≤ 0.5% 3) Charge Control parameters: voltage regulator output port (DC): 0 ~ 8.0V controlled (100mA) 4) temperature detection: 1 channel battery compartment temperature -40 ℃ ~ 125 ℃ 109 road patrol battery temperature -55 ℃ ~ 125 ℃ 5 ) cell line detection: 256 DC-screen diagram 6) Insulation online testing: 8 to 64, can be customized 7) branch switch status detection: 8 ~ 64 8) silicon chain control: 5 9) fault records: 64 Article 10) Relay contact: 220V / 2A working conditions a) Power supply: AC320V ~ 420V test machine power: AC320V ~ 420V 50Hz ± 10% 2) Operating ambient temperature: 0 ℃ ~ 45 ℃ 3) Relative humidity: ≤ 85RH4 ) run place: no strong vibration and impulse, no serious dust, corrosive gases, conductive and explosive material, ventilated. 5) Scope: DC110V system, DC220V system can meet. Description: The parameter settings are 220V system as an example of the present specification, 110V system parameters to be adjusted accordingly 3 system configuration DC power system monitoring module by the versatile, high-frequency switch charging module, battery module, DC feed out of several parts. 3.1 DC system monitoring module DC-screen multifunction centralized monitoring module is self-developed, all-digital control, protection, management, and measurement of the new DC-monitoring devices. Hardware device highly integrated, single board structure using (All in one), containing insulation monitoring, battery testing, grounding line, battery activation, silicon chain regulator, the central computer signal and other functions. Host Configuration large LCD touch screen, a variety of operating conditions and parameters are character display, in line with the overall design to facilitate simple user habits.