Drošības kondensatoru iedala x tipa un y tipa kondensatoros. Maiņstrāvas ievade ir sadalīta 3 spailēs: Uguns L/Nulle N/zemējums, (L=līnija, N=neitrāle, G=zemējums). Starp "L-N", t. i., "Fire-Zero", ir X kondensators; starp "L-G/N-G", t. i., "Fire-Ground" vai "Zero-Ground", ir X kondensators. vai "Zero-Ground" ir Y kondensators. Starp uguns vadu un nulles līniju, kas savienota ar kondensatoru, piemēram, "X", un starp uguns vadu un zemes vadu, kas savienots ar kondensatoru, piemēram, "Y", tie nav atbilstoši tam, kāds materiāls jāsadala.
Safety standard capacitor
X capacitor: Because the location of this capacitor is also critical, it also needs to comply with the relevant safety standards, and X capacitor is also one of the safety capacitors. According to the actual needs, the capacitance of X capacitor is allowed to be larger than the capacitance of Y capacitor, but at this time, a safety resistor must be connected in parallel to both ends of X capacitor, which is used to prevent the power cord from being unplugged, due to the charging and discharging process of the capacitor and the power cord plug is charged for a long time. Safety standards, when the machine is working in the power cord is unplugged, in two seconds, the power cord plug voltage charged at both ends (or potential to ground) must be less than 30% of the original rated working voltage.
Kā vienam no drošības kondensatoriem X kondensatoram ir jāsaņem arī drošības testēšanas aģentūras sertifikāts. X kondensators parasti ir marķēts ar drošības sertifikācijas zīmi un izturības spriegumu AC250V vai AC275V, bet tā reālais līdzstrāvas izturības spriegums ir līdz 2000V vai vairāk, tāpēc neizmantojiet parastos kondensatorus ar nominālo izturības spriegumu AC250V vai DC400V kā aizstājējus.
Parasti X kondensatorā tiek izmantots mylar plēves tipa kondensators ar augstu pulsāciju strāvu. Šī tipa kondensatora izmērs ir lielāks, bet tā momentānā uzlādes un izlādes strāva arī ir liela, un tā iekšējā pretestība ir mazāka.
2kv-1000uf magnētiskais kondensators-impulsa kondensators-augstsprieguma magnētiskais kondensators

2kv-1000uf magnētiskais kondensators-impulsa kondensators-augstsprieguma magnētiskais kondensators

Y capacitors: The two Y capacitors are connected in critical positions and must comply with the relevant safety standards to prevent leakage from electronic devices or electrically charged cases, which can easily endanger personal safety and lives. They are safety capacitors, which require the capacitance value not to be large, and the withstand voltage must be high. Therefore, the total capacity of Y capacitor should not exceed 4700PF (472).
GJB151 stipulates that the capacity of Y capacitor should be no more than 0.1uF. In addition to conforming to the corresponding grid voltage withstand voltage, Y capacitors are required to have sufficient safety margin in electrical and mechanical performance to avoid The voltage withstand performance of Y capacitor is important to protect personal safety.　Y capacitors are mostly orange or blue in appearance, and are generally marked with safety certification marks (such as UL, CSA, etc.) and withstand voltage of AC250V or AC275V. However, the true DC withstand voltage is up to 5000V or more. It must be emphasized that Y capacitors should not be used in place of ordinary capacitors with nominal withstand voltage of AC250V or DC400V.
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