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1: Introduction to DC screen
:
DC screen
is the abbreviation of DC power operating system
. The general name is intelligent maintenance-free DC power supply screen, referred to as DC screen, and the general model is. DC panels are suitable for power distribution rooms in 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 of high-voltage switches, relay protection, automatic devices, control systems, etc. power supply. It can also be used in other places that require DC power supply (such as petrochemical, mining, railway, etc.). The DC panel consists of an AC and DC 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.
2: Working principle of DC screen
Simply put, DC screen is a device that provides stable DC power supply.
The two-channel mains power of the DC panel inputs one AC through the dual-channel AC switching device to supply power to each charging module. The DC panel charging module converts the input three-phase/single-phase alternating current into direct current, charges the battery, and supplies power to the closing load. In addition, the closing bus supplies power to the control bus through the voltage reduction device. When the mains power is outage or abnormal, emergency power supply is provided by battery discharge. Each basic monitoring unit in the DC panel system is managed and controlled by the main monitoring unit. The information collected by each basic monitoring unit is sent to the main monitoring unit through communication lines. Unified management. The main monitor displays various information of the DC system. Users can also touch the display screen to query information and operate. System information can also be connected to the remote monitoring system.
In addition to basic AC monitoring, DC monitoring, and switch monitoring, the DC panel can also be configured with insulation monitoring and battery inspection functions to comprehensively monitor the DC system.
Three: Main features of Zhilian Shengda DC screen
This product complies with the general technical requirements for DC power equipment in power engineering.
This product complies with the technical regulations for DC system design in power engineering.
High reliability:
, modular design using switching power supply, + hot backup.
The charging module can be hot-swapped when powered, which greatly reduces the average maintenance time.
Power bus and control bus can be directly powered by the charging module alone, and can be hot-backed up through the voltage reduction device.
, Hardware low-difference independent current sharing technology, the maximum imbalance of output current between modules is better than.
1: Introduction to DC screen
DC screen
is the abbreviation of DC power operating system
. The general name is intelligent maintenance-free DC power supply screen, referred to as DC screen, and the general model is. DC panels are suitable for power distribution rooms in 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 of high-voltage switches, relay protection, automatic devices, control systems, etc. power supply. It can also be used in other places that require DC power supply (such as petrochemical, mining, railway, etc.). The DC panel consists of an AC and DC 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.
2: Working principle of DC screen
Simply put, DC screen is a device that provides stable DC power supply.
The two-channel mains power of the DC panel inputs one AC through the dual-channel AC switching device to supply power to each charging module. The DC panel charging module converts the input three-phase/single-phase alternating current into direct current, charges the battery, and supplies power to the closing load. In addition, the closing bus supplies power to the control bus through the voltage reduction device. When the mains power is outage or abnormal, emergency power supply is provided by battery discharge. Each basic monitoring unit in the DC panel system is managed and controlled by the main monitoring unit. The information collected by each basic monitoring unit is sent to the main monitoring unit through communication lines. Unified management. The main monitor displays various information of the DC system. Users can also touch the display screen to query information and operate. System information can also be connected to the remote monitoring system.
In addition to basic AC monitoring, DC monitoring, and switch monitoring, the DC panel can also be configured with insulation monitoring and battery inspection functions to comprehensively monitor the DC system.
Three: Main features of Zhilian Shengda DC screen
This product complies with the general technical requirements for DC power equipment in power engineering.
This product complies with the technical regulations for DC system design in power engineering.
High reliability:
, modular design using switching power supply, + hot backup.
The charging module can be hot-swapped when powered, which greatly reduces the average maintenance time.
Power bus and control bus can be directly powered by the charging module alone, and can be hot-backed up through the voltage reduction device.
, Hardware low-difference independent current sharing technology, the maximum imbalance of output current between modules is better than.
, reliable lightning protection and electrical insulation measures, the optional insulation monitoring device can monitor the system insulation condition in real time to ensure system and personal safety.
The system design adopts (International Electrotechnical Commission
) and other international standards, and the reliability and safety are fully guaranteed.
Highly intelligent
The monitoring module adopts a large-screen LCD display with Chinese characters and audible and visual alarms.
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.
The combination of modern power electronics and computer network technology
provides support for telemetry, remote control, remote signaling and remote adjustment of the power system
to achieve unattended operation.
Battery automatic management and protection, real-time automatic detection of battery terminal voltage, charging and discharging current, and intelligent control of battery float charging. It is equipped with audible and visual alarms for battery over-under voltage and charging over-current.
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
Four: DC screen technical description
Project name
Technical indicators
AC input
Voltage range ()
3
Frequency range
DC output
Rated voltage ()
Voltage adjustment range ()
Rated current ()
Output current limiting range
-
Voltage stabilization Accuracy
Steady flow accuracy
Ripple coefficient
Conversion efficiency (full load output)
Dynamic response (load )
Recovery time overshoot
Environmental conditions
Insulation strength
Noise
Working environment temperature
℃～+℃< br/> Transportation and storage temperature
~
℃
Humidity
No condensation
Protection function
Output overvoltage protection, output current limiting protection, output short circuit Protection, over-temperature protection, module parallel protection, over-current protection
Cabinet description:
The front of the cabinet is a whole glass door, and the back is a double door, with a beautiful and elegant appearance
★ The cabinet structure design facilitates equipment installation, debugging, maintenance and operation.
★ The overall dimensions include (height, width and depth), two conventional standard specifications, and non-standard cabinets can be customized according to user needs.
Zhejiang single-phase GZDW5-200A DC panel power supply manufacturer