200 ah dc panel
DC power supply panel
Scope of application ：
It is suitable for the operation, control power supply and emergency lighting power supply of 10 ~ 500kV substations, power plants, distribution rooms of high-rise buildings and residential communities, and small self-provided power plants, as high-voltage switches, relay protection, automatic devices, control systems, etc.
product details
Introduction to GZDW dc screen
Dc panel is short for dc power operating system.The general name is intelligent maintenance-free dc power panel,or dc panel for short,and the general model is GZDW.Dc screen is suitable for the operation,control power supply and emergency lighting power supply of 10~500kV substations,power plants,distribution rooms of high-rise buildings and residential communities,and small self-provided power plants.It can also be used in other places that need dc power(such as petrochemical,mining,railway,etc.).The dc panel consists of ac-dc power distribution unit,charging module unit,buck silicon chain unit,dc feed unit,distribution monitoring unit,monitoring module unit and insulation monitoring unit.
Ii.Main features
This product conforms to the general technical requirements of gbt19826-2005 dc power supply equipment for power engineering.
This product conforms to dlt5044-2004 electric power engineering dc system design technical specification.
High reliability:
1.Modular design of switching power supply,N+1 thermal backup.
2.The charging module can be plugged in and out with electric heating,which greatly reduces the average maintenance time.
3.Power bus and control bus can be supplied directly by charging module alone,and can be backed up by thermal step-down device.
4.Hardware low difference independent current sharing technology,large imbalance degree of output current between modules is better than 5%.
5.Reliable lightning protection and electrical insulation measures,and the insulation monitoring device selected can monitor the insulation of the system in real time to ensure the system and personal safety.
6.The system design adopts IEC(international electrical commission),UL and other international standards,which fully guarantees the reliability and safety.
High intelligence:
◆monitoring module with large screen LCD Chinese characters display,sound and light alarm.
◆parameters of each part of the system can be set through the monitoring module.The module has the function of smoothly adjusting output voltage and current,and the function of compensating battery charging temperature.
◆modern power electronics and computer network technology combined to provide the power system"telemetry,remote control,remote signal,remote control"support,to achieve unattended.
◆battery automatic management and protection,real-time automatic detection of battery terminal voltage,charge and discharge current,and the battery floating charge for intelligent control,with battery over voltage and charge over current sound and light alarm.
◆the system USES the monitoring device built-in insulation monitoring,battery detection,grounding line selection,battery activation,silicon chain voltage regulation,central signal and other functional units,greatly convenient for users to use;
Iii.Technical indicators
Ac input voltage range(VAC):380V±20%(single-phase input can also be customized),frequency range:50Hz±10%
Rated dc output voltage(VDC):220/110
Voltage adjustment range(VDC)180-286/90-143
Rated current(ADC)5-200A
Output current limit range 5%-110%
Voltage stability accuracy≤0.5%
Steady flow accuracy≤0.5%
Ripple coefficient≤0.1%
Conversion efficiency(full load output)≥94
Dynamic response(load 20%-30%)recovery time≤200 mics overshoot≤±2%
Environmental conditions:
Insulation strength 2KVac 1min
55 or less db noise(1 m)
Working environment temperature:-5℃~+45℃
Transportation and storage temperature-40~70℃
Humidity 0-90%no condensation
Protection function output overvoltage protection,output current limit protection,output short circuit protection,overtemperature protection,module parallel protection,overcurrent protection
Iv.Cabinet contents:
Front of cabinet put oneself in another's position is whole glass door,behind is double open the door,appearance is beautiful and easy;
The cabinet structure design is convenient for equipment installation,debugging,maintenance and operation.
★external dimensions(high X wide X deep)2260×800×600mm,2260×800×800mm two kinds of conventional standard specifications,and can be customized according to user needs non-standard cabinet.
Modular cabinet system:by charging modular cabinet(charging cabinet,feeding cabinet),battery cabinet group.
Split cabinet system:by charging cabinet,feeding cabinet,battery cabinet group.
System composition(components)
According to functional units,the system is composed of the following components.The basic functions of each component are as follows:
●high frequency switching rectifier module
High frequency rectifier module completes AC/DC transformation and realizes the basic functions of the system.
●ac distribution
The three-phase ac input power is distributed to each high frequency rectifier module through power distribution.Its extended function is to realize automatic switching of the two-way ac input power.
●dc feed
The dc bus voltage is distributed through distribution to each dc output circuit.
●silicon chain voltage regulating unit
The output voltage of the rectifier module and the battery voltage are reduced to a stable range of control voltage output.
●monitoring unit device
The management of the whole system,the realization window of man-machine dialogue,mainly for battery charging management,remote control of the system background.Through the monitoring device,all kinds of analog signals of ac,dc and extended quantities,as well as all kinds of switch signals are collected and analyzed.
●battery inspection
For single battery voltage monitoring and warning,our company provides battery inspection device and battery inspection unit.19 and 120 single batteries were tested respectively.
●insulation detection
Monitoring the insulation condition of the bus and the feeder and outlet branches,generating alarm signals,reporting data to the monitoring module system,and displaying detailed alarm information in the monitoring module.
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