Щит постоянного тока

1、 Product Overview and Scope of Use

The DC panel consists of an AC power distribution unit, a charging module unit, a step-down silicon chain unit, a DC feed unit, a power distribution monitoring unit, a monitoring module unit, and an insulation monitoring unit. It is mainly used in small and medium-sized power plants, hydropower stations, various substations, and other users using DC equipment (such as petrochemical, mining, railway, etc.) in the power system. It is suitable for switching on and off, as well as instruments, meters, relay protection, and fault lighting in the secondary circuit. The DC screen is a new type of digital control, protection, management, and measurement DC system. The monitoring host part is highly integrated and adopts a single board structure (AII in one), including insulation monitoring, battery patrol inspection, grounding line selection, battery activation, silicon chain voltage stabilization, microcomputer central signal, and other functions.

2、 Product Features

High reliability:

Modular design of switching power supply, N+1 hot backup. The charging module can be electrically plugged in and out, greatly reducing the average maintenance time. The power bus and control bus can be separately and directly powered by the charging module, and can be hot backed up through a step-down device. Hardware low difference autonomous current sharing technology, the maximum imbalance of output current between modules is better than 5%. Reliable lightning protection and electrical insulation measures. The insulation monitoring device can monitor the insulation of the system in real time, ensuring system and personal safety. The system design adopts international standards such as IEC and UL, with sufficient assurance of reliability and safety.

High intelligence:

The monitoring module adopts a large screen LCD Chinese character display, with audible and visual alarm. The parameters of various parts of the system can be set through the monitoring module. The module has the function of smoothly adjusting the output voltage and current, and has the function of battery charging temperature compensation. With multiple extended communication ports, it can access various external intelligent devices (such as battery testers, insulation monitoring devices, etc.). The combination of modern power electronics and computer network technology provides support for "telemetry, remote control, remote signaling, and remote regulation" of power systems, achieving unattended operation. Automatic battery management and protection, real-time automatic detection of battery terminal voltage, charging and discharging current, and intelligent control of battery floating charge. It is equipped with audible and visual alarms for battery overvoltage and charging overcurrent. The system uses monitoring devices with built-in insulation monitoring, battery detection, grounding line selection, battery activation, silicon chain voltage regulation, central signal and other functional units, greatly facilitating user use; The system adopts unique "one wire connection" wiring technology, greatly facilitating the on-screen wiring of large capacity DC systems and facilitating user maintenance.

3、 Working conditions

1. Working power supply: AC320V~420V, test power supply: AC320V~420V50Hz+10%

2. Working ambient temperature: 0 ° C~45 ° C

3. Relative humidity of air: ≤ 85RH

4. Operating site: No strong vibration and impulse, no serious dust, no corrosive gas, no conductive and explosive media, and good ventilation.

5. Scope of application: Both DC110V and DC220V systems can meet the requirements for use.