Operating Instructions:
Connect the test object to the instrument panel using the dedicated test leads according to the four-terminal measurement method. Note that the voltage measurement leads should be connected inside the current output leads. Connect the AC220V power supply (Note: The third wire of the power input, i.e., the protective ground, must be connected to the earth). Press the power switch. At this time, the ammeter and resistance meter display "000", with a one-digit fluctuation allowed. Press the measurement switch, adjust the current output knob (clockwise) until the ammeter displays "100.0", then read the value on the resistance meter, which is the resistance of the test object, and record it. (If it displays "1 ", it indicates that the measured circuit is over-range). After testing, turn the current output adjustment knob (counterclockwise) to the minimum, turn off the measurement switch, and then turn off the power switch. To repeat the test, simply turn off the measurement switch, re-clamp the test clamps, and press the measurement switch again.
Fault Analysis and Troubleshooting:
Precautions:
| Fault Phenomenon | Cause Analysis | Troubleshooting Method | Remarks |
| No display upon power-on | 1) Power not connected | Connect the power supply | When replacing the fuse, use the same type of fuse; do not substitute with other types. |
| 2) The instrument's 5A fuse is not installed properly or is open | Reinstall the fuse or replace it | ||
| Output current cannot reach 100A | 1) Test leads are too long, i.e., the wire cross-sectional area is too small | Replace with wires of larger cross-sectional area | |
| No current output | 1) The device under test is open circuit | Check the device Troubleshoot the fault |
|
| 2) There is an open circuit fault in the test loop | Check the test loop and troubleshoot the open circuit fault |
Before turning on the power switch, first turn the current adjustment knob counterclockwise to the "zero" position. The instrument should be placed indoors in a dry, ventilated area free from corrosive gases.
Transportation and Storage
■ Transportation
When the equipment needs to be transported, it is recommended to use the company's instrument packaging wooden box and shock-absorbing materials to avoid unnecessary damage during transportation and prevent unnecessary losses.
When the equipment is transported without a wooden box, stacking is not allowed. When using the company's instrument packaging box, the maximum stacking height allowed is two layers.
During transportation, the instrument panel should face upward.
■ Storage
The equipment should be placed indoors in a dry, dust-free, ventilated area free from corrosive gases. Without wooden box packaging, stacking is not allowed.
When storing the equipment, the panel should face upward. Place moisture-proof materials under the equipment to prevent moisture damage.
Unpacking and Inspection
■ Unpacking Precautions
Before unpacking, ensure that the arrow mark on the outer packaging is facing upward. When unpacking, be careful not to strike forcefully to avoid damaging the equipment. Remove the equipment from the box and retain the outer packaging and shock-absorbing materials, which will be convenient for future transportation and storage and also help protect the environment.
■ Inspection Contents
After unpacking, take out the equipment and check the equipment and accessories against the packing list. If any shortage is found, contact the company immediately, and we will provide prompt service.
