How does the DC resistance tester view and process data? The DC resistance tester is an instrument that is often used in the power testing industry. It is mainly used to measure the DC resistance and winding value of transformers and high-voltage electrical equipment. It has a fast test speed. High precision, easy to use, flexible and easy to carry, etc., are well received by the majority of electric workers. At the same time, after the test, they often encounter data query, storage and printing. This article takes the DC resistance tester as an example. Give you a brief explanation of how the DC resistance tester performs data viewing and processing.

In the measurement process of the DC resistance tester, in addition to strictly complying with the electrical safety regulations and equipment test regulations, special attention must be paid to the measurement under the condition of stable coil temperature. The temperature difference between the upper and lower parts of the transformer tank is required to be no more than 3 ℃. Due to the inductance of the transformer coil, the charging current during measurement is not stable, so the counting must be performed after the current is stable, and measures to shorten the charging time should be taken if necessary. Try to reduce the contact resistance of the wires in the test circuit. The transformer taps in operation are often affected by oil film and other contaminants to make their contact poor. Generally, it is necessary to switch several times before measuring to avoid judgment errors. When measuring the low-voltage side of the transformer, all personnel should keep a proper safe distance from the high-voltage side.

You must read this manual carefully before using the DC resistance tester. Keep the instrument away from rain, corrosive gas and other places. The meter should avoid violent vibration. The maintenance and debugging of the instrument should be carried out by professionals. After the test is completed, be sure to wait for the discharge alarm to stop before turning off the power, and remove the test line. When measuring the no-load voltage-regulating transformer, you must wait for the discharge indication alarm sound to stop before switching gears. During the test, it is forbidden to move the test clamp and the power supply line.