â—† Micro-ampere meter configuration of DC high voltage generator
The microampere meter of the DC high voltage generator is usually a three-and-a-half-inch liquid crystal display (range: 0-1999uA). Such a range is sufficient for use in a conventional DC leakage test project. The DC leakage test of the zinc oxide arrester in the conventional test is that the maximum current value of the DC leakage test at the reference voltage of 1 mA and the reference voltage of 75% is 1000 uA. The DC leakage test current value of the cable in the conventional test is even smaller. Only when the large-capacity cable is frequently used, the microampere metering range is required to be larger, because the charging current is relatively large when the cable is pressurized. It is recommended that the user select a four-and-a-half liquid crystal display microampere meter when purchasing the DC high voltage generator (range: 0- 19999uA or 0-1999.9uA).
â—† Precautions when using micro-ampere meter of DC high-voltage generator
How to correctly use the digital microampere meter of the accessory product of the DC high voltage generator, and how to select the type of the digital microampere meter of the DC high voltage generator accessory product is directly related to the quality of the DC test item. The service life of the microampere meter of the DC high voltage generator is directly related to the tester's operation method. The quality of the connection and the discharge time are directly related to the life of the microammeter. The microampere meter of the DC high voltage generator is not reliable or does not pay attention to the wiring during the test. It easily leads to the discharge of surrounding objects during the boosting process. When the capacitive test is performed, the discharge time is sooner or later and the sequence is not proper. It may directly damage the microammeter. What we require is to have a close look at whether the high voltage output line and other items have a sufficient safety distance before the DC high voltage generator is used, and whether there is a sufficient safety distance on the high pressure and pressure side of the test object. After the test personnel has finished the test, The DC high-voltage generator voltage must be reduced to zero, and the obvious power disconnection point must be opened to discharge the test object using the discharge rod. The whole discharge process is divided into two parts. Discharge can not be immediately contacted with the discharge of the test sample, should first gradually close the head of the discharge test sample, to a certain distance from the beginning of the air gap has a buzzing sound, when there is no sound can be used directly connected to the discharge rod ground discharge.
For high-current test products, Yangzhou Tuopu Electric Technology Co., Ltd. has 4 semi-heads and headers shown as 0~19999uA. Please select a reasonable user. This article is contributed by Yangzhou Tuopu Electric Technology Co., Ltd. Technical consultation:
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