(1) The relevant capacitors should be tested and checked, and the reasons should not be found out, and the electric power is not allowed to be forcibly transmitted after the fuse is replaced;(2) Pay attention to the standard of fuse installation and select the fuse with qualified quality;(3) The fus

(1) Fuse fuses caused by internal faults of capacitors;(2) Non-standard installation of capacitor fuses or poor fuse quality, resulting in overheated fuse breaking;(3) Unreasonable selection of capacitor fuse (4) Overcurrent caused by high harmonic current in power grid leads to fuse breakage.

With the digital multimeter check, the digital multimeter is set to the appropriate resistor file, the red meter pen and the black meter pen contact the two poles of the measured capacitor respectively. At this point, the display value will gradually increase from 000 until the overflow symbol "1" i

An index multimeter can also be used to measure the capacitance of a digital meter. If you use an index multimeter, you usually use the R × 1K file to connect the pen to the two poles of the capacitance. The multimeter pointer wobbles and slowly recovers to or near zero. Such capacitors are good. Th

The most direct and simplest method: connect directly with 220V AC, you can connect one pole first, touch another capacitor foot with another power line. If there is a clear little spark at the time of the touch, it is certain that the capacitor is charged, that is, the capacitor is not broken.

Error analysis of measuring positive dizzying AC voltage with multimeter distortionWhen the effective value of distorted sinusoidal voltage with harmonic component is measured by multimeter (AC voltage range is mean meter), the measurement error depends not only on the amplitude of each harmonic, bu

Analysis of measuring Non-sinusoidal AC Voltage by MultimeterThe rectifier instrument composed of the magnetoelectric system measuring mechanism of the multimeter and the rectifying circuit indicates the average value of the AC voltage. In engineering technology, it is usually necessary to measure t

Range selection and Measurement error of Resistance FilesWhen measuring the same resistance with a multimeter, the error of different measuring range is different, and the error of measurement is very different. When selecting the gear range, the measured resistance should be placed in the center of

Voltage and current range selection and measurement error of multimeter The accuracy grades of multimeter are generally 0.1, 0.5, 1.5, 2.5, 5, etc. The calibration of accuracy level of DC voltage, current, AC voltage and current is expressed by the percentage of the maximum absolute allowable error

"Printing" Breakthrough the difficult problem of perovskite flexible Solar cellsIn January 5th 2018, at the beginning of the new year, good news came from the research field of flexible energy storage. Song Yanlin, a key laboratory of green printing at the Institute of Chemistry of the Chinese Acade