1. Adjustable AC 0-450V output
Connect the three-phase four-wire power supply to the "Power Input" terminals "A, B, C, N" on the terminal board of the test bench; according to the test requirements, connect the "AC 0-450V Output" terminals "A, B" to the switchgear under test. After checking that everything is correct, close the main power switch. At this time, the voltmeter corresponding to the "Power Input Indicator" will show a voltage reading. By switching the "Power Voltage Conversion" switch, you can check the voltages between phases A, B, and C of the input power. Press the closing button on the left side of the voltage regulator and the closing button for "0-450V AC Operation Control"; turn the voltage regulator handle clockwise while observing the "AC 0-450V AC Output" voltmeter until the desired voltage is reached. After the test is completed, turn the voltage regulator handle counterclockwise until the voltage reaches zero, and press the corresponding opening button.
2. Single-phase 0-20A adjustable current output
Connect the three-phase four-wire power supply to the "Power Input" terminals "A, B, C, N" on the terminal board of the test bench; according to the test requirements, connect the "AC 0-20A Output" terminals to the switchgear under test. After checking that everything is correct, close the main power switch. At this time, the voltmeter corresponding to the "Power Input Indicator" will show a voltage reading. By switching the "Power Voltage Conversion" switch, you can check the voltages between phases A, B, and C of the input power. Press the closing button on the left side of the voltage regulator and the closing button for "0-20A AC Operation Control"; turn the voltage regulator handle clockwise while observing the "AC 0-20A AC Indicator" ammeter until the desired current is reached. After the test is completed, turn the voltage regulator handle counterclockwise until the voltage reaches zero, and press the corresponding opening button.
3. Adjustable DC 0-220V output
Connect the three-phase four-wire power supply to the "Power Input" terminals "A, B, C, N" on the terminal board of the test bench; according to the test requirements, connect the "DC 0-220V Output" terminals to the switchgear under test. After checking that everything is correct, close the main power switch. At this time, the voltmeter corresponding to the "Power Input Indicator" will show a voltage reading. By switching the "Power Voltage Conversion" switch, you can check the voltages between phases A, B, and C of the input power. Press the closing button on the left side of the voltage regulator and the closing button for "0-220V DC Operation Control"; turn the voltage regulator handle clockwise while observing the "0-220V DC Voltage Indicator" voltmeter until the desired voltage is reached. After the test is completed, turn the voltage regulator handle counterclockwise until the voltage reaches zero, and press the corresponding opening button.
Note: After completing the DC test, before removing the wiring, be sure to observe the DC voltmeter to check if its reading is relatively small. If it is greater than 24V, pause briefly to allow the circuit to discharge automatically to a safe voltage before proceeding with disconnection.
Explanation: The above three outputs are interlocked with each other; only one output can be active at a time.
4. Adjustable DC 0-300V output
Connect the three-phase four-wire power supply to the "Power Input" terminals "A, B, C, N" on the terminal board of the test bench; according to the test requirements, connect the "AC 0-450V Output" terminals "A, B" to the switchgear under test. After checking that everything is correct, close the main power switch. At this time, the voltmeter corresponding to the "Power Input Indicator" will show a voltage reading. By switching the "Power Voltage Conversion" switch, you can check the voltages between phases A, B, and C of the input power. Press the closing button on the left side of the voltage regulator and the closing button for "0-300V DC Output Control"; turn the potentiometer knob clockwise while observing the "DC Closing Power Supply 0-300V Voltage Indicator" voltmeter until the desired voltage is reached. After the test is completed, turn the potentiometer knob counterclockwise until the voltage reaches zero, and press the corresponding opening button.
5. Three-phase AC 100V fixed output
Connect the three-phase four-wire power supply to the "Power Input" terminals "A, B, C, N" on the terminal board of the test bench; according to the test requirements, connect the "AC 100V Output" terminals "A, B, C, N" to the switchgear under test. After checking that everything is correct, close the main power switch. At this time, the voltmeter corresponding to the "Power Input Indicator" will show a voltage reading. By switching the "Power Voltage Conversion" switch, you can check the voltages between phases A, B, and C of the input power. Press the closing button on the left side of the voltage regulator and the closing button for "Three-phase Fixed 100V Output Control"; observe the "Three-phase 100V Fixed Output" voltmeter, and rotate the "Three-phase 100V Voltage Conversion" switch to observe the line voltages between AB, BC, and CA. After the test is completed, press the corresponding opening button.
6. Press the closing button on the left side of the voltage regulator to obtain fixed AC 220V and DC 220V outputs respectively.
IV. Operating Conditions
1. Ambient temperature: 0～40℃
2. Altitude: <1000M
3. Relative humidity: <85%
4. The workplace should be free of gases, vapors, chemical dust, or other explosive media that could seriously affect insulation.
1. When unpacking, check whether electrical components are damaged or loose.
2. Before use, check that the contacts of all electrical appliances are in good condition, especially the contact of the carbon brush of the voltage regulator.
1. High and low voltage switchgear test bench - one unit
2. Instruction manual - one copy
3. Certificate of conformity - one piece
