Switching power supply is generally a high-precision power supply with single-phase or three-phase input and high-power DC output, up to 400kW, with excellent electronic characteristics such as ultra-high accuracy, high precision, and high stability. It can provide high-power ultra-low ripple DC power supply on the production line, which can make the product performance more perfect.
It has a complete protection circuit and can better meet the user's simple and convenient use needs. Compared with the switching power supply, it has the advantages of high precision, small ripple, no high-frequency radiation interference, and wide application occasions.
The performance characteristics of the DC regulated power supply are 9 points: 1. It has an external analog detection signal and can monitor the rated operating status of the power supply in real time;
lIt has two output modes: constant current and constant voltage overcurrent;
l8-inch touch flat display operation, easy to operate;
lIt adopts a multi-channel closed-loop control circuit with fast response speed, stable output and high precision;
lIt has an emergency stop button that can instantly stop the power output;
lIt has an automatic voltage drop compensation function and high output voltage accuracy;
lIt has a variety of communication interfaces and supports MODBUS-RTU communication protocol;
lIt has input overvoltage, undervoltage, phase loss, output overvoltage, overcurrent, power device overheating protection and other functions;
lIt adopts soft switching control technology and IGBT circuit, and the overall efficiency is more than 90%.
In addition, there are many things that require special attention during the entire process of DC adjustable regulated power supply application.
According to the required working voltage, first adjust the "coarse adjustment" knob, and then slowly adjust the "fine adjustment" knob to ensure proper coordination. For example, when a 12V working voltage must be output, the "coarse adjustment" knob should be set to 15V, and then the "fine adjustment" knob should be adjusted to 12V, and the "coarse adjustment" knob should not be set to 107. Otherwise, the maximum output voltage cannot reach 12Vo.
After adjusting to the required current, connect the load.
During the entire application process of the dc power supply, if it is necessary to switch the "coarse adjustment" gear, the load should be disconnected first, and the load value should be connected after the output voltage is adjusted to the required value.
During the entire application process, if the load short circuit fault or load maintenance is caused, the load should be cut off first, and then the "restore" key should be pressed. The switching power supply can also be reconnected, and the voltage can resume working. Reconnect the load after troubleshooting.
When the adjustable dc power supply is used in series with switching power supplies of different rated voltages, the output current is the rated current of the channel with the smallest rated current.
Each switching power supply has a meter. A/1 is different: it represents the input and output current or output voltage of the circuit respectively. Generally placed on the working voltage label.
Each channel has two output terminals, red and black. The red terminal indicates "", the black terminal indicates "-", and there is a black terminal in the middle of the control panel connected to the "ground" mark, indicating that the terminal is connected to the shell and has no electrical connection with each output, and is only used as an anti-counterfeiting line. Some people often think that the "ground" mark indicates the grounding device "" and "-" indicate the positive and negative dual-way switching power supply outputs are used to power the dual-way switching amplifier circuit.
The working voltage of the dual-way switching amplifier circuit can be applied in series.
