Resistor braking type unidirectional DC power supply
SEVB series resistance braking type DC test power supply is a test power supply equipment specially developed for the product test of the drive motor system production line. Adopt full-range ZVZCS soft switching technology, the whole machine efficiency is higher than 90%, double closed-loop control circuit, high output precision, high efficiency and stable operation.
▊Isolated output circuit to ensure safe operation.
▊The full range of output voltage and output current is adjustable.
▊The operation interface adopts a seven-inch touch screen, which is convenient to operate.
▊It has various output modes of constant voltage, constant current and limited power.
▊It has a multi-stage filter circuit to reduce the harmonic interference to the power grid.
▊Double closed-loop control circuit, fast response and stable output.
▊Equipped with a discharge device to meet the instantaneous energy consumption of the motor test.
▊Adopt full range ZVZCS soft switching technology, the whole machine efficiency is higher than 90%.
▊It has RS485 communication interface and adopts MODBUS-RTU communication protocol.
▊With external analog interface, it can realize external detection of power supply status and control power output
Data viewing: After the system is powered on, the display enters the power-on self-test, and after the self-test is over, the main interface is automatically opened. In the main interface, you can easily view the current output and set value of the device.
Output setting: Click the setting button to open the setting page, enter the required voltage and current value, and click OK. If the device has been activated, the output will change to the newly set value; if the device has not been activated, after modifying the set value, the device needs to be activated to obtain the output.
Start and stop operation: The device can be started and stopped by clicking the start or stop button.
High frequency conversion technology based on ZVZCS technology + resistance discharge type
The modular design of the test power supply consists of three 650V55A power supply modules.
≤ 50ms（10%-90%sudden load）
Voltage ripple (rms)
Voltage drop compensation
Automatic lead drop compensation
Program-controlled independent setting
Discharge voltage accuracy
IGBT PWM controllability
Discharge resistance power
The operation of the brake discharge unit is uniformly controlled by the touch screen without manual intervention.
Communications and Operations
RS485 (standard)/network port (optional)/CAN (optional)
Undervoltage, overvoltage, overcurrent, phase loss
Over voltage, over temperature, over current
Environmental Conditions and Safety
forced air cooling