electrical power panel
electrisity control box
DC power panel
Scope of application:
Applicable to 10~500kV substations, power plants, distribution rooms of high-rise buildings, residential areas, etc., as well as small self-contained power plants, as the operation and control power supply and emergency lighting power supply for high-voltage switches, relay protection, automatic devices, control systems, etc.
factory general control box
Product Details
200AH/DC220V DC panel power supply system
- Introduction to GZDW DC panel
DC panel is the abbreviation of DC power supply operating system. The general name is intelligent maintenance-free DC power panel, referred to as DC panel, and the general model is GZDW. DC panel is suitable for 10-500kV substations, power plants, high-rise buildings, residential areas, etc., as well as small self-contained power plants, as the operation, control power supply and emergency lighting power supply for high-voltage switches, relay protection, automatic devices, control systems, etc. At the same time, it can also be used in other places that require DC power (such as petrochemical, mining, railways, etc.). The DC panel consists of AC and DC distribution units, charging module units, step-down silicon chain units, DC feed units, distribution monitoring units, monitoring module units and insulation monitoring units.
- Main features
This product complies with the provisions of GBT19826-2005 General Technical Conditions for DC Power Equipment in Power Engineering.
This product complies with DLT5044-2004 Technical Regulations for Design of DC Systems in Power Engineering.
High reliability:
- Modular design of switching power supply, N+1 hot backup.
- Charging module can be hot-swapped with power on, and average maintenance time is greatly reduced.
- Power bus and control bus can be directly powered by charging module, and can be hot-backed up by step-down device.
- Hardware low-difference autonomous current balancing technology, large imbalance of output current between modules is better than 5%.
- Reliable lightning protection and electrical insulation measures, optional insulation monitoring device can monitor system insulation in real time to ensure system and personal safety.
- System design adopts IEC (International Electrotechnical Commission), UL and other international standards, reliability and safety are fully guaranteed.
High intelligence:
◆ The monitoring module adopts large-screen LCD Chinese character display and sound and light alarm.
◆ The parameters of each part 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.
◆Combining modern power electronics with computer network technology, it provides support for “telemetry, remote control, remote communication, and remote adjustment” of the power system, realizing 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, with battery over-voltage and under-voltage and charging over-current sound and light alarm.
◆The system uses a monitoring device with built-in insulation monitoring, battery detection, grounding line selection, battery activation, silicon chain voltage regulation, central signal and other functional units, which greatly facilitates user use;
distribution electrical panel
III. Technical indicators
AC input voltage range (VAC): 380V±20% (single-phase input can also be customized), frequency range: 50Hz±10%
DC output rated voltage (VDC): 220/110
Voltage adjustment range (VDC) 180-286/90-143
Rated current (ADC) 5-200A
Output current limit range 5%-110%
Voltage regulation accuracy ≤0.5%
Current regulation accuracy ≤0.5%
Ripple factor ≤0.1%
Conversion efficiency (full load output) ≥94
Dynamic response (load 20%-30%) recovery time ≤200μS overshoot ≤±2%
Environmental conditions:
Insulation strength 2KVac 1min
Noise (1m) ≤55dB
Working environment temperature -5℃～+45℃
Transportation and storage temperature -40～70℃
Humidity 0-90% without condensation
Protection function Output overvoltage protection, output current limiting protection, output short circuit protection, over-temperature protection, module parallel protection, over-current protection
IV. Cabinet description:
The front of the cabinet is a whole glass door, and the back is a double door, with a beautiful appearance;
★The cabinet structure design is convenient for equipment installation, commissioning, maintenance, inspection and operation.
★The external dimensions are (height x width x depth) 2260×800×600mm, 2260×800×800mm, two conventional standard specifications, and non-standard cabinets can be customized according to user needs.
★Combination cabinet system: consists of charging combination cabinet (charging cabinet, feeder cabinet), battery cabinet.
★Split cabinet system: consists of charging cabinet, feeder cabinet, battery cabinet.
System composition (components)
According to the functional units, the system consists of the following components, and the basic functions of each component are as follows:
●High-frequency switch rectifier module
The high-frequency rectifier module completes AC/DC conversion and realizes the basic functions of the system.
●AC power distribution
The three-phase AC input power is distributed to each high-frequency rectifier module through power distribution. Its extended function is to realize the automatic switching of two AC input power supplies.
●DC power feeding
The DC bus voltage is distributed to each DC output circuit through power distribution.
●Silicon chain voltage regulator unit
The output voltage of the rectifier module and the battery voltage are reduced to a control voltage output within a stable range.
●Monitoring unit device
Manage the entire system, realize the window of human-computer dialogue, mainly perform battery charging management, and remote control of the system background. Through the monitoring device, various analog quantities of AC, DC, and extended quantities, and various switch quantity signals are collected and analyzed and processed, with sound and light alarm information.
●Battery inspection
automation electrical panel
For single cell voltage monitoring and alarm, our company provides battery inspection device and battery inspection unit; detect 19 and 120 single cells respectively.
●Insulation detection
Monitor the insulation status of busbar and feeder branch to ground, generate alarm signal, report data to the monitoring module system, and display detailed alarm information in the monitoring module.