Strictly control operating voltageThe operating voltage of shunt capacitor must be strictly controlled within the allowable range. That is, the long-term operating voltage of shunt capacitor must not be greater than its rated voltage value of 10.If the operating voltage is too high, it will greatly

(I)Strengthen inspection, check and maintenance. Shunt capacitors should be checked regularly, at least once every quarter, mainly to check whether there are dirts such as dust accumulation in the shell of capacitor, porcelain casing, installation support and so on, and carry out a s

In principle, there should be no short-circuit failure mode in metallized film capacitors, and many short-circuit failure phenomena (such as 27-pbxxxx-j0x series) will occur in metallized foil capacitors.Although metallized thin film capacitors have the advantages mentioned above, they also have two

Polyester film or polypropylene film functioning as the medium, zinc aluminum alloy adheres to the surface of metallized film by vacuum evaporation to form an electrode. Capacitors are formed by winding or laminating without inductance. Metallized film capacitors have many advantages such as high vo

Film capacitors-basic introduction. There are many kinds of capacitors, such as electrolyte capacitors, paper capacitors, film capacitors, ceramic capacitors, mica capacitors, air capacitors and so on. But the most frequently used acoustics are electrolytic capacitors and film filter capacitors. Ele

III. Insulation resistance of capacitance affected by temperature In general, the insulation resistance of the capacitance decreases with the increase of temperature, and the decrease of the insulation resistance will lead to the increase of leakage current of the capacitance, so the working of the

(I)The influence of temperature on the service life of power capacitor In general, the life of the capacitor is shortened with the increase of temperature, and the upper limit of the ambient temperature of the power capacitor is generally set at 40 ℃ according to the relevant operating conditions of

Mica is an ideal dielectric material for capacitors with high insulation, high temperature resistance, low dielectric loss and thickness of up to 25 microns. The main advantages of mica capacitor are low loss, good frequency stability, small distributed inductance and large insulation resistance, so

(1) the surface of the lead is oxidized or coated too thinly to weld properly; (2) poor spot welding between lead wire and aluminum foil, which did not eliminate the aluminum oxide film layer in the spot welding place of aluminum foil surface; (3) the probability of low level failure is increased be

Breakdown Mechanism of Ceramic Capacitor under High humidityThe breakdown failure of semi-sealed ceramic capacitors (such as patch capacitors) in high humidity environment is a common and serious problem. The breakdown can be divided into dielectric breakdown and surface arc breakdown. The dielectri