Views:1 Author:Site Editor Publish Time: 2018-03-09 Origin:Site
The gauge capacitor is divided into X capacitor and Y capacitor. X Y capacitors are Anchorage capacitors, X capacitors between the zero lines of fire lines, Y capacitors between fire lines and ground, and the two and three poles are used in power supply filters, which play the role of power filter, respectively to the common mode. Safety capacitance is used in such cases, that is, after failure, not endangering personal safety.
Allowable peak pulse voltage overvoltage level for safety grade application of safety gauge capacitors IEC664). X1 > 2.5kV ≤ 4.0kV Ⅲ X2 ≤ 2.5kV Ⅱ X3 ≤ 2.5kV Ⅱ X3 ≤ 1.2kV- Safety Grade Insulation Type Y1 double Insulation or reinforced Insulation ≥ 250VY2 basic Insulation or additional Insulation ≥ 150V ≤ 250VY3 basic Insulation or additional Insulation ≥ 150V ≤ 250VY4 Base. The capacitance of this or additional insulation ≤ 150VY capacitor must be limited. In order to achieve the purpose of controlling the leakage current passing through the rated frequency and rated voltage and the effect on the EMC performance of the system.
The second Triode GJB151 stipulates that the capacity of Y capacitor shall not be greater than 0.1 UF. The Y capacitor not only conforms to the corresponding voltage and voltage of the power system, but also requires that this kind of gauge capacitor has sufficient safety allowance in terms of electrical and mechanical properties to avoid the phenomenon of breakdown and short circuit under the extremely bad environment. The voltage withstand performance of Y capacitor is of great significance to the protection of personal safety.
At present, the safety capacitance is widely used in all kinds of electronic products, which is closely related to our daily life. The product quality of safety capacitance is directly related to our quality of life and safety. In the selection of safety capacitance, please choose the original product production, have the national safety certification, the quality is guaranteed and can be used safely.
A gauge capacitor is divided into X capacitor and Y capacitor X Y capacitor. It is also required that the safety capacitors have sufficient safety allowance in terms of electrical and mechanical properties to avoid the phenomenon of breakdown and short circuit under extremely harsh conditions. The voltage resistance of Y capacitor is very important to the protection of personal safety.