Safety capacitor is suitable for what kind of occasion

Safety capacitance means used in such situations, the capacitor after failure, will not lead to electric shock, do not endanger personal safety. Safety capacitors are usually only used in the filter function of anti-interference circuit. It includes two types, that is, X and Y capacitors, capacitance is two line jumper in the power line (X L - N) The capacitance between, generally choose metal film capacitors; Y capacitor are respectively jumper in the power line between line and ground ( L - E, N - E) Capacitance, usually come in pairs. Based on the limitation of leakage current, capacitance value Y cannot too big, general level X capacitor is uF, Y capacitor is nF level. Capacitance differential mode interference suppression X, Y capacitor common-mode interference suppression. According to IEC 60384 - 14, and Y capacitance of the capacitor can be divided into X: 1. X capacitor refers to cross in L - N between the capacitor. 2 safety capacitance. Y capacitor refers to cross in L - G/N- G between the capacitor. ( L =线,N =中立,G =地面) Under X capacitor is divided into X1, X2, X3, the main difference is that: 1. The X1 resistance to high pressure is greater than 2. 5 kV, less than or equal to 4 kV, 2. X2 high voltage less than or equal to 2. 5 kV。 3. X3 high voltage less than or equal to 1. 2 kV Y under the capacitance is divided into Y1, Y2, Y3, Y4, the main difference is that: 1. Y1 resistance to high pressure is greater than 8 kV; 2. Y2 resistance to high pressure is greater than 5 kV; 3. High-pressure Y3 n/a; 4. Y4 resistance to high pressure is greater than 2. All is capacitance of the 5 kV X, Y, wire between the zero line is X capacitor, is Y capacitance between the wire and ground. They are used in power supply filter, power filtering effect of common-mode ( Y capacitor) The differential mode ( X capacitor) Interference filter. As headquarters shenzhen ShenMao electronic technology co. , LTD. Is an enterprise specializing in the production and sales of capacitor. Taiwan, taichung city, was founded in 1990, investment in August 1997, dongguan city, guangdong province with the good concept of enterprise development and industry technical level, the rapid rise in the field of electronic components. Diversified development company, now owns several production enterprises and sales company. one Power supply of electromagnetic interference suppression with capacitor when used in the power line circuit capacitor to eliminate noise, it is not only the normal voltage, also must consider the abnormal pulse voltage ( Like lightning) , this can lead to capacitor smoke or fire. So the cross line of capacitor safety standards in different countries have strict rules, so must use a capacitor safety certification. two Capacitor are not allowed to be used as a line across the capacitor use: for X2 class power electromagnetic interference suppression with capacitor shall be applicable to the capacitor failure will not cause electric shock when dangerous situations, such as power across the line connection, affordable 2. 5 kv impulse voltage. For Y2 class power electromagnetic interference suppression with capacitor shall be applicable to the capacitor failure does not lead to electric shock dangerous situations, when used in power across the line connection, can withstand the 5 kv impulse voltage surge, from occurrence breakdown now
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