Three-Phase Zinc Oxide Arrester Tester Usage:
Turn on the power switch, and the startup screen will appear.
After a few seconds, the main menu as shown below (figure) will appear.
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 this position; press the "Increase" and "Decrease" keys to make selections. After all positions are adjusted, press the "OK" key. Among them, A, B, C represent single-phase measurement, and X represents three-phase simultaneous measurement.
l Compensation Angle: The adjustment method is the same as above. Generally, the influence of interphase interference is about 2° to 5°. Due to the difficulty in accurately calculating the interference amount, hard compensation is generally not recommended. Instead, it is set to 0.0°. According to regulations, the trend of data changes over a period can be compared longitudinally. If adjustment of the side-phase correction angle is needed, refer to the relevant sections of "Measurement Principle" later. If three-phase simultaneous measurement is selected, the angle is automatically compensated.
l Date: The adjustment method is the same as above. Use the "Function" key to select the item to adjust: year, month, day, hour, minute, second, and use the "Increase" and "Decrease" keys to adjust. After all adjustments are completed, press the "OK" key.
l Mode: Press "OK" to switch among wired, inductive, 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 as shown in Figure 7 will appear.
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 display.
