Low Voltage High Precision Bidirectional DC Power Supply
SEVD series high-precision bidirectional DC power supply adopts high-performance DSP control board and full-color touch screen human-computer interface to display the status parameters and faults of system operation in real time. Users can set the required voltage, current and power through the display screen. The system structure is composed of mold boxes to achieve high power density. AC/DC adopts full-control bidirectional PWM rectification and inverter control, and DC/DC adopts step-down circuit. The system operates reliably, with high precision and fast response.
l Adopt multi-level transformation, IGBT type circuit mode, pure digital power supply, leading technology.
l The energy can be fed back to the power grid; it has the characteristics of power supply and load at the same time. In addition to the performance of high-power DC power supply, it can realize the load function of energy feeding back to the power grid, which has the outstanding advantages of energy saving, consumption reduction and environmental protection; no need for electric vehicle motor testing. The load consumes energy and can feed the reverse current back to the grid in real time.
l The circuit structure of the product adopts PWM rectification and DC/DC double-stage circuit, which can realize the characteristics of wide output voltage range, high precision and fast dynamic response. Among them, the voltage accuracy is less than or equal to 1%
l Adopt PWM rectification + PWM inverter principle, power factor>0.99. THD and injected harmonic current meet the national standard GB/T 14549-93.
l The output has constant voltage, constant current and constant power modes;
l With local operation and external communication function;
l Strict system thermal design, low temperature rise, long life;
l Large-screen LCD display, multiple communication interfaces;
l Programmable protection and operation parameters;
Main technical specifications
total harmonic distortion
The output voltage
Output rated current
output peak current
Power regulation rate
Voltage ripple (rms)
Communications and Operations
Large-screen LCD/host computer control
External communication RS485
External emergency stop, fault signal, voltage compensation
Overvoltage, overcurrent, phase loss
Over voltage, over temperature, over current
Indication light alarm
Environmental Conditions and Safety
forced air cooling