Low Voltage Distribution Cabinet
The new generation of microcomputer-controlled DC power supply system GZDW/GZTW series adopts an integrated modular structure design, which is mainly composed of monitoring module, rectifier module, insulation monitoring module, battery inspection module, AC/DC monitoring module, switching quantity monitoring module, step-down module, power distribution unit, battery and cabinet, and has the features of flexible configuration, stable performance, user-friendly interface, simple operation and intelligent management. It is widely used in all kinds of power plants, substations, mobile communication base stations, industrial and mining enterprises, electrified railroads, airports, ports, high-rise buildings, residential communities and other fields, and can be used as the operation and control power supply for high-voltage switches, electromechanical protections, automation devices, program-controlled exchanges of telecommunication equipments, power carriers and other equipments.
Battery type
Rated output voltage
Battery capacity(Ah), dual battery pack*2
Installation: A.Floor standing, B.Wall mounted
Type of monitoring
Microcomputer control type
Applicable type: D.For electric power system,T.For communication system
DC power supply
Screen
DL/T459-2000 Technical conditions for ordering DC power supply cabinets for electric power systems.
DL/T637-1997 Technical conditions for ordering valve-regulated sealed lead-acid batteries.
DLT724-2000 Technical Regulations on Operation and Maintenance of Power System Storage Battery DC Power Supply Units.
DL/T781-2001 High-frequency switching rectifier modules for electric power. DL/T856-2004 DC power supply monitoring device for electric power.
DL/T857-2004 Technical conditions for rectifier inverter equipment for power plant and substation batteries
DL/T5044-2004 Technical specification for the design of DC systems in electric power engineering;
DL/T5120-2000 Regulations for the design of DC systems for small power projects.
Microcomputer-controlled DC power supply screen GZDW is an integrated power supply screen designed for users of different capacities. The system mainly consists of monitoring module, rectifier module, AC and DC monitoring module, insulation monitoring module, battery inspection module, switching monitoring module, voltage reduction module, etc. It is characterized by stable performance, friendly interface, simple operation and intelligent management. It is applicable to substations, power plants, industrial and mining enterprises with different electric voltage levels. Electrified railroad and high-rise buildings, etc. It can be used as the operation power and control power of high-voltage switch, relay protection and automatic device.
| Item | Parameterindicator |
| Rated Input Voltage | 380VAC±20%220VAC±20% |
| Rated output voltage | 220VDC、110VDC |
| Rated output current | 6A、10A、12A、20A、30A、40A、50A、60A、70A、80A、90A、100A、120A、130A、150A、180A、200A、260A、300、…… |
| Battery capacity | 7Ah、10Ah、20Ah、38Ah、65Ah、100Ah、150Ah、200Ah、300A、500Ah、600Ah、800Ah、1000Ah、1500Ah、2000Ah、……… |
| Voltage stabilization accuracy | ≤±0.5% |
| Stabilization accuracy | ≤±0.5% |
| Ripple factor | s±0.1% |
| Grid frequency | 50Hz±10% |
| Powerfactor | ≥0.95%(Full load output/Sortie à pleine charge) |
| Dielectric strength | >10M 、2KVAC One minute without flashover, no breakdown |
| Operating mode | Continuous long-term operation |
| Cooling method | Intelligent temperature-controlled air-cooling,high-efficiency natural cooling |
| Audible noise | ≤50dB |
1)Two AC inputs are automatically switched to ensure normal operation of the system;
2)Wide input voltage range and strong grid adaptability;
3)Adopt high frequency switching power supply technology, modular design, N/I hot backup, high reliability;
4)The rectifier module adopts hot-swapping with electricity, which is convenient and quick for daily maintenance;
5)High-precision dynamic equalization of flow,which can be operated autonomously, master-controlled or controlled;
6)Monitoring can choose LCD, touch screen, color touchscreen, large screen graphic display, friendly and rich interface, easy and convenient to operate;
7)Monitoring real-time implementation of comprehensive monitoring and control of the system operation, system Settings, information query, but also through the background monitoring and remote monitoring of the system to implement "telemetry, remote control, remote communication, remote adjustment "four remote functions, to achieve unattended;
8)Monitoring can automatically manage the battery voltage,charging and discharging current and battery temperature compensation accurately,with over-under voltage, over-temperature alarms and fault alarms to ensure that the battery works in the best state and prolongs the service life of the battery;
9)With manual and automatic voltage regulation function and branch circuit insulation detection function;
10)Reliable lightning protection and high degree of insulation protection measures to ensure system and personal safety;
11)Provide RS232, RS485 two kinds of communication interface, and RTU, CDT, MODBUS three kinds of power department standard communication statute selection;
12)With expansion interface can be accessed to other external equipment;
13)A set of monitoring system can be used,double battery, double charging device, busbar segmentation, to achieve independent charging and discharging management of double battery.
Note: According to the user's needs, the alarm function of accident signal or forecast signal and the DC/AC and DC/DC conversion of inverter power supply and DC converter module can be added. For details of specific function operation, please refer to the description of system configuration module.
