Y2 capacitance pressure value

The Y2 capacitor is the Y capacitor in the safety capacitor series. The Y capacitor is also one of the safety capacitors and is the most special device in the power circuit. Especially in the AC/DC converter, the Y capacitor plays a significant role in suppressing common-mode interference.

Safety Capacitor Safety Rating 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

The Y capacitor is divided into a Y1 capacitor and a Y2 capacitor, and Y1 is a double-insulated Y capacitor for bridging a secondary side. Y2 is a basic single-insulated Y capacitor. Used for bridging the primary side to protect the earth ie FG line according to IEC 60384-14.

Y2 capacitor generally has a rated voltage of 300VAC and a resistance value of 1800-2600VAC.

The capacitance of Y capacitor must be limited to achieve the purpose of controlling the magnitude of the leakage current flowing through it and the effect on the EMC performance of the system under the rated frequency and rated voltage. GJB151 specifies that the capacity of the Y capacitor should not exceed 0.1uF. In addition to the corresponding voltage tolerance of the grid, the Y capacitor also requires a sufficient safety margin in terms of electrical and mechanical properties of the capacitor to avoid breakdown short-circuit phenomena in extremely harsh environmental conditions. The Y-capacitor withstand voltage performance It is of great significance to protect personal safety.