Safety capacitance is refers to the capacitor
failure after, will not lead to electric shock, don't endanger personal safety capacitor.
Safety capacitors are usually only used in the filter function of anti-interference circuit.
They are used in power supply filter, power filtering effect, respectively for common mode, differential mode interference filter.
For safety and EMC consideration, general advice plus the entrance of the power supply safety capacitor.
With the development of technology, electronics, electrical appliances, communications and other industries upgrade cycles are getting shorter, safety and film capacitors because of its good electrical performance and high reliability, become indispensable to promote the industry upgrading electronic components.
Film capacitor is now widely used in electronics, electrical appliances, communications, electric power, electric railways, hybrid cars, wind power, solar power and other industries, in addition to because it has no polarity, high insulation resistance, excellent frequency characteristic and low dielectric loss, etc, has also benefited from its healing properties, the following introduce you to the advantages and disadvantages of film capacitor self-healing.
Film capacitor with self-healing properties, which is the characteristic of film capacitor.
Divided into discharge self-healing and electrochemical self-healing.
Because of this feature, the damage of the many times film capacitor does not need to change, a lot of times it can heal itself, so it can reduce the cost of replacement of condenser, reduce maintenance costs, reduce some troubleshooting, machine malfunction such as time delay, this is its advantages, but the self-healing properties is also has its disadvantages.
Self-healing properties of film capacitor of electric current pulse was caused when the defect is self-healing, bring circuit signal interference, reduce the signal-to-noise ratio of the circuit.
So we can see, in some special demanding circuit, such as hi-fi, high precision communication circuit, etc. , will not use film capacitor, some will also reduce the use and can't make film capacitor healing occurred at work, or it will affect the circuit.
Another drawback of the self-healing properties is to use capacitor capacity reduce gradually.
If the electric capacity at work, since many times, will cause the capacitance and insulation resistance, large loss Angle increases significantly smaller, the capacitor failure quickly.
So pay attention to lower the number of capacitor in self-healing.
Anything is good and bad side, capacitor, too, to understand clearly.
At the time of purchase we should also pay attention to the quality of the product, in order to ensure the safe usage of components.
We are specialized in manufacturing safety capacitors, varistors, ceramic capacitors, plastic film capacitors manufacturer, more high-quality capacitor in ShenMao.
The above is the advantages and disadvantages of film capacitor self-healing, hope to be helpful to the readers.
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