1. Wiring: Place the arrester on the bracket with good insulation performance, then connect the high voltage output end of the tester to one end of the arrester, and the ground end to the other end of the arrester. (Figure 2)

2, zinc oxide arrester DC parameter tester measurement: close the power switch, the LCD module displays the boot welcome screen and button prompts. (Figure 3)


Press the “+†button to view the previously saved data (the test results are automatically saved after each test)
Press the "Test" button to enter the test state, the high voltage output is dangerous!
Press the "Settings" button to adjust the date and time (system date and time errors are adjusted)
After waiting for a few seconds, when there is no operation, the time and date setting screen is automatically entered, and the displayed temperature is the ambient temperature of the test. (Figure 4)


If you need to adjust the time and date, press the SET button to start the movement and move to the year, month, day, hour, minute, and second cycles. Move the cursor to the item you want to set. Press the “+†and “–†keys to set.
Press the “Test†button at any time to enter the test (Please confirm that the sample is connected before testing!).
The test high voltage starting voltage gradually rises and the current is constantly changing.
When the current is 1 mA, the instrument automatically records the voltage value at this time, the high voltage starts to slowly drop, drops to 0.75 times the voltage, and the current value at this time is automatically recorded, and the test ends. After the test result flashes three times, the test result is locked and automatically saved. 3. The test result of the zinc oxide arrester DC parameter tester is printed:
If you need to print this test data, please press the “Print†button, the printer will automatically print the test results and the ambient temperature, date, time and so on.
4, data storage and viewing:
After each test, the data is automatically saved. A total of 50 test data can be saved. When the test data exceeds 50 times, the first data is automatically overwritten and the other data is unchanged.
Press “+†to view the saved data, then press “+†to scroll through the last data (turning pages on the loop)
The test data will loop on the time and date page and the test results page.
Press the “-†button to print the currently viewed data.
5, error: If the test sample is not connected or short-circuit overload, etc., the instrument will enter the automatic protection state, stop the test and prompt the test error.
6. Replace the printing paper: When the printing paper is replaced, load the printing paper into the paper bin, pull out the printing paper, and close the front cover. Thermal paper has a smoother thermal side (front) to print content.
7. Replace the fuse: There is a fuse box under the power socket. Use a flat-blade screwdriver to pull the fuse box up to replace the fuse. The fuse size is 3A.
Drop-in kitchen sinks, also called self-rimming sinks, overmount sinks, or top-mount sinks, are sink basins that install and sit on top of your kitchen counter. There is a visible rim or lip on the perimeter of the basin that rests just over the cut-out for the sink. Drop-in sinks are supported by this lip and a series of hidden clips that attach to the underside of the countertop.
The Advantages of Drop-In Sinks
Drop-in sinks have some clear advantages over other styles, especially in the kitchen.
Cost
They`re generally cheaper to buy and easier to install than undermount sinks. In fact, even weekend warriors and DIY newbies should have no problem installing a basic overmount sink. If cost is a consideration in your kitchen, an overmount sink with a do-it-yourself install is a great way to stay within budget.
Cleaning
While cleaning may not be your foremost concern when choosing a kitchen sink, it should be considered. After all, you`ll have to care for and maintain your sink regularly. The basin of an overmount sink is easier to clean than the basin of an Undermount Sink.
Protection
If you`ve got soft countertops, drop-in sinks can help protect the edges of the sink cutout.
- Marble and some specialty counter finishes benefit from the added protection provided by the lip of a drop-in kitchen sink basin. It prevents the build up of water on the surface edges of the stone through repeated exposure of use.
- If you have laminate countertops, drop-in sinks are the only option: the particle board below the laminate surface isn`t strong enough to support undermount sinks but plays well with self-rimming basin types.
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