Rechargeable Zinc Oxide Arrester Resistive Current Tester Overview:
This instrument adopts advanced technologies such as microcomputer sampling and control. It can measure the total current, third harmonic, resistive current, peak resistive current, capacitive current, active power, etc., of zinc oxide arresters under power frequency voltage. It also displays voltage and current waveforms and provides printout. With a large-screen LCD display and Chinese menu prompts, it enhances human-machine interaction. It also provides on-site wiring diagrams. This instrument features simple wiring, high measurement accuracy, and strong reliability.
Rechargeable Zinc Oxide Arrester Resistive Current Tester Usage:
Turn on the power switch, and the startup screen appears.
After a few seconds, the main menu appears as shown below (figure).
l Line Number: Press the "Function" key to move the cursor to "Line Number", then press "OK" to enter.
l PT Ratio: Press the "Function" key to move the cursor to "PT Ratio".
l Test Phase Sequence: Press the "Function" key to move the cursor to "Test Phase Sequence", then press "OK" to enter; press the "Function" key to select the position to adjust, and a small cursor will appear at that position; press the "Increase" and "Decrease" keys to select, and after all positions are adjusted, press "OK". Among them, A, B, C represent single-phase measurement, and X represents three-phase simultaneous measurement.
l Compensation Angle: Adjust in the same way as above. Generally, the influence of interphase interference is about 2°~5°. Since it is difficult to accurately calculate the interference amount, hard compensation is generally not recommended; instead, set it to 0.0°. You can compare the data trend over a period of time according to regulations. If you need to adjust the edge phase correction angle, refer to the relevant sections in "Measurement Principle" later. If three-phase simultaneous measurement is selected, the angle is automatically compensated.
l Date: Adjust in the same way as above. Use the "Function" key to select the item to adjust: year, month, day, hour, minute, second. Use the "Increase" and "Decrease" keys to adjust. After all adjustments are completed, press "OK".
l Mode: Press "OK" to switch among wired, induction, and wireless modes.
l View: Press the "Function" key to move the cursor to "View", then press "OK" to enter (as shown in Figure 6); press the "Increase", "Decrease", and "Function" keys to select the data to view, and press "OK" to display that set of data.
l Measurement: Press the "Function" key to move the cursor to "Test", then press "OK" to enter measurement, and the measurement screen appears as shown in Figure 7.
Display: Switch the display screen to show all test information or a brief display. If three-phase simultaneous measurement is selected, press "Increase" and "Decrease" to cycle through the information of the three phases.
Print: Can print the measured data, but does not store it.
Store: Store the current data. Select the storage location for the data, then press "OK" to save.
Exit: Exit measurement and return to the system main menu.
7. Data Upload: Install the provided data communication packaging software on the computer, and connect the instrument to the computer's RS-232 serial port using a serial communication cable. Turn on the instrument power, run the communication program on the computer, and click the desired function on the computer to complete the relevant operations.
Rechargeable Zinc Oxide Arrester Resistive Current Tester Precautions:
