X and Y capacitors are safety capacitor, the difference is X capacitor connected to the input line at both ends to eliminate differential mode interference, Y capacitor connected between the input line and ground, used to eliminate common mode interference;
X capacitor with plastic square high-voltage CBB capacitor, CBB capacitor not only has better electrical performance, and parallel with the input power supply can effectively reduce the high-frequency pulse on the switching power supply.
Y capacitor --- has high pressure tiles. The Y-type capacitor is connected between the phase line and the ground. In order not to exceed the relevant safety standards to limit the ground to allow leakage values, the value of these capacitors in about a few nF. In general, the Y capacitor should be connected to a conductor with a large noise disturbance;
Y capacitor is divided into Y1 capacitor and Y2 capacitor, Y1 is a double insulated Y capacitor for bridging a secondary side; Y2 belongs to the basic single insulated Y capacitor, used to bridge the primary side of the protection of the earth that is FG line.
Safety capacitor is used for such occasions, the capacitor failure, will not lead to electric shock, does not endanger personal safety.
X Safety capacitor Safety level Allowable peak pulse voltage Overvoltage level (IEC664) X1> 2.5kV ≤4.0kV SW {{
X2 ≤2.5kV IY-F 6bXV
X3 ≤ 1.2kV} _. T.S @; 9e
Y Safety Capacitance Safety Class Insulation Type Rated Voltage Range
Y1 double insulation or reinforced insulation ≥ 250V
Y2 basic insulation or additional insulation ≥ 150V ≤ 250V
Y3 basic insulation or additional insulation ≥ 150V ≤ 250V
Y4 basic insulation or additional insulation <150V
X capacitance suppression differential mode interference
Y Capacitor Suppression Common Mode Interference
According to IEC 60384-14, the capacitor is divided into X capacitor and Y capacitor,
1. X capacitance refers to the capacitor across the L-N.
2. Y Capacitance is a capacitor that is between L-G / N-G. (L = Line, N = Neutral, G = Ground).
(1) plus Y-CAP The most important purpose is to EMI
(2.) Now most people do not want to add Y-CAP, there are two points:
A is to reduce costs, a Y-CAP has 0.3RMB, and now we are in the NO Y design
B. Our switching power supply in a number of audio equipment, there are a lot of trouble, such as mp3 switching power supply is not good with a linear power supply, fixed telephone, ADSL switching power supply will be noisy;
3. safety regulations on the Y-CAP did not say that must be added, as long as your EMI can be, Y-CAP too much will affect the leakage current
X capacitor with plastic square high-voltage CBB capacitor, CBB capacitor not only has better electrical performance, and parallel with the input power supply can effectively reduce the high-frequency pulse on the switching power supply.
Y capacitor --- has high pressure tiles. The Y-type capacitor is connected between the phase line and the ground. In order not to exceed the relevant safety standards to limit the ground to allow leakage values, the value of these capacitors in about a few nF. In general, the Y capacitor should be connected to a conductor with a large noise disturbance;
Y capacitor is divided into Y1 capacitor and Y2 capacitor, Y1 is a double insulated Y capacitor for bridging a secondary side; Y2 belongs to the basic single insulated Y capacitor, used to bridge the primary side of the protection of the earth that is FG line.
Safety capacitor is used for such occasions, the capacitor failure, will not lead to electric shock, does not endanger personal safety.
X Safety capacitor Safety level Allowable peak pulse voltage Overvoltage level (IEC664) X1> 2.5kV ≤4.0kV SW {{
X2 ≤2.5kV IY-F 6bXV
X3 ≤ 1.2kV} _. T.S @; 9e
Y Safety Capacitance Safety Class Insulation Type Rated Voltage Range
Y1 double insulation or reinforced insulation ≥ 250V
Y2 basic insulation or additional insulation ≥ 150V ≤ 250V
Y3 basic insulation or additional insulation ≥ 150V ≤ 250V
Y4 basic insulation or additional insulation <150V
X capacitance suppression differential mode interference
Y Capacitor Suppression Common Mode Interference
According to IEC 60384-14, the capacitor is divided into X capacitor and Y capacitor,
1. X capacitance refers to the capacitor across the L-N.
2. Y Capacitance is a capacitor that is between L-G / N-G. (L = Line, N = Neutral, G = Ground).
(1) plus Y-CAP The most important purpose is to EMI
(2.) Now most people do not want to add Y-CAP, there are two points:
A is to reduce costs, a Y-CAP has 0.3RMB, and now we are in the NO Y design
B. Our switching power supply in a number of audio equipment, there are a lot of trouble, such as mp3 switching power supply is not good with a linear power supply, fixed telephone, ADSL switching power supply will be noisy;
3. safety regulations on the Y-CAP did not say that must be added, as long as your EMI can be, Y-CAP too much will affect the leakage current
