The insulating oil dielectric strength tester is a new generation of fully automatic oil tester developed in accordance with the requirements of the International Electrotechnical Commission standard IEC-156 and the national standard GB507-86 "Determination of Dielectric Strength of Insulating Oils", fully considering the needs of users at home and abroad. It is dominated by a single-chip microcomputer and adopts the method of setting first and then starting the test. The entire process is automatically controlled by the microcomputer, making operation simple. The operation is divided into fully automatic six-time and fully automatic single-time operations, with functions such as automatic voltage boosting test, automatic stirring, automatic processing, automatic printing, digital display, and locking technology. The readings are intuitive, the measurement is accurate, and the test process is safe and reliable.
The fully automatic insulating oil dielectric strength tester has added the functions of a perpetual calendar and long-term storage of experimental data, and changed the digital display to a liquid crystal display. The controller uses a single-chip microcomputer to control the entire test process, with particularly strong anti-interference performance, completely overcoming the drawback of current liquid crystal automatic testers being susceptible to high-voltage breakdown interference. It not only improves work efficiency, making monotonous, repetitive, and boring work quite interesting, but is also safe, reliable, and accurate in measurement.
This instrument is simple to operate: except for the first time when you need to preset the data you need (if measuring according to national standards, this step can be omitted because the factory has already preset the data according to national standards. The number of times is 6, the stirring time is 1 minute, and the standing time is 5 minutes), afterwards you only need to press the measurement key. The diversity of operating modes is designed for the different needs of users.
The insulating oil dielectric strength tester is equipped with an automatic detection function. When powered on, it automatically enters the reset state and performs voltage regulator zero return; according to user needs, it can change the number of tests, stirring and standing time, and sound and light control reminders for continuous printing or non-printing; this instrument uses a fully automatic magnetic stirrer to eliminate unevenness and bubbles in the oil sample; it adopts a miniature TPU-A panel printer for automatic printout.
It uses advanced technologies such as central processing units and large-scale integrated circuits to form an automated testing device. The operation process is fully automated, and the test data of the oil can be printed through the miniature printer configured on the panel. Compared with ordinary instruments and similar types of instruments, this device has good test stability, high accuracy, and good operability. This device has multiple test operation modes in oil testing operations. Main features:
1. Fully automatic test mode: 6 consecutive tests, automatically calculate the average value, and print the 6 test data and the average through the panel printer.
2. Single automatic test mode: automatically complete 1 test and print the single test data.
It uses an AC reversible motor to drive the voltage regulator at a uniform speed of 3 kV/s to boost the voltage through the step-up transformer. When the oil sample breaks down, the protection system automatically cuts off the boosting power supply circuit, and at the same time, the protection circuit provides an interrupt signal to the system. After the system responds, it executes the oil breakdown test program. The main operation contents are:
1. The four-digit digital tube displays with 8 consecutive flashes to indicate oil breakdown;
2. Record test data;
3. Program-controlled automatic zero return operation. After returning to zero, it determines whether to proceed with the next test operation cycle or automatically exit the test state based on the number of tests.
