High and Low Voltage Switching Power Supply Test Bench
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Functional Description
1. Items 1 to 5 in the technical parameters are controlled by independent contactors. Before the output terminals, 10A and 20A air switches are connected in series as short-circuit protection. According to special user requirements, items 1 to 5 in the parameters can be closed simultaneously without interlocking. Please pay attention to the requirements during use.
Only one group of power outputs can work at a time.
2. Items 6 to 7 in the technical parameters are not controlled by contactors. As long as the main power switch is closed, single-phase AC220V output (fixed value) and three-phase AC380V output (fixed value) can be output.
3. The three-phase transfer switches K1, K2, and K3 control the three-phase AC380V voltmeter, three-phase AC ammeter, and three-phase AC voltmeter on the panel respectively.
Product Introduction:
Switch closing power supply, external power supply (optional according to user requirements).
This power supply consists of a fully controlled three-phase rectifier module, phase-shift trigger circuit, automatic adjustment circuit, and absorption circuit.
The transistor intelligent control module integrates the complex automatic adjustment circuit, thyristor, and trigger circuit into one. By adjusting the control signal voltage, the conduction angle of the thyristor is changed, thereby achieving the functions of power regulation and automatic control.
The trigger circuit system, thyristor, and thermal conductive base plate are mutually insulated and isolated, with dielectric strength greater than 2500V, making it safe and convenient to use. The input end of the three-phase rectifier module has no phase sequence restriction. It is suitable for resistive and inductive loads.
Product Parameters
Input power: Three-phase four-wire AC380V
Output voltage and current:
1. Three-phase AC100V output (fixed value) one group
2. Three-phase AC 0 – 10A output (<100V, adjustable) one group
3. AC voltage output
AC 0 – 400V, at 220V, current less than 10A one group
4. DC operating voltage output DC 0 - 260V one group
5. Single-phase AC220V output (fixed value, socket) two groups
6. Three-phase AC380V output (fixed value, terminal) one group
7. DC fixed voltage 24V, 36V, 110V, 220V output one group
8. Dimensions: 550mm×750mm×800mm
9. Weight: 45kg
Instructions
1. Connect three-phase four-wire AC380V
2. Connect output DC300V to the load
3. Turn the output adjustment knob counterclockwise to zero
4. Check and confirm the wiring is correct
5. Close the power switch
6. Slowly adjust the output adjustment knob to raise the voltage to a suitable value
7. After the test, first turn the output adjustment knob counterclockwise to zero, then disconnect the power switch. After discharge is complete, only then can you start disconnecting wires.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
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