Shenmao Capacitors specialized in aluminum electrolytic capacitors from 1970

Functional explanation of metal film capacitors|Focus on mid-to-high-end brand capacitor manufacturers

by:Shenmao     2021-03-25
Metal film capacitors can be connected in series with high-voltage resistors to form an RC overvoltage absorption device, which is suitable for absorbing the filtered overvoltage generated by the vacuum circuit breaker during opening and closing in the 35KV AC transmission and distribution system, and protects the high-voltage electrical products in the system from voltage damage , This product can also be used as a high-voltage capacitor in other occasions. The protective metal film capacitor is connected in parallel with the vacuum switch. When the vacuum switch meets the inductive load, it can not only limit the operating overvoltage within a certain range, but also delay the rise time of the intercepted overvoltage and the reignition overvoltage wave, and reduce the steepness. So as to protect the insulation of electrical equipment from the impact of the steep wave front. Use the capacitor to absorb energy to reduce the voltage amplitude, and the damping effect of the resistance to attenuate the oscillation to prevent overvoltage; at the same time, do not limit the neutral point grounding method to ensure that it matches the motor insulation level and improve the quality of power supply of the power grid. Used with lightning arresters to protect electrical equipment; supporting metal film capacitors for RC overvoltage absorption devices in vacuum circuit breakers. But also need to pay attention to several aspects. The first point is that the height of the poster for the installation and operation of the metal film capacitor is not more than 1000m, the ambient air temperature is -40~+40℃, and the relative humidity is not more than 98%. Then, the installation site should be free of corrosive gas, vapor, conductive or explosive dust, and no severe mechanical vibration. Furthermore, when the capacitor is put into operation, the residual voltage on its terminals shall not exceed 10% of the rated voltage. Its functional characteristics are also very significant, small size, light weight, low power consumption, stable capacity, and self-healing.
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The key to electrolytic capacitor is understanding where there is a problem or need in certain markets and knowing how to solve it.
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