东莞市科尼盛电子有限公司坚持顾客至上，绿色环保，品质的经营理念。Dong Guan Ke Ni Sheng Electronic  CO.,LTD）adhere to the customer first, green environmental protection, quality first business philosophy.

东莞市科尼盛电子有限公司 
英文名: Dong Guan Ke Ni Sheng Electronic  CO.,LTD
地址：广东省东莞市东坑镇黄麻岭工业园凤凰路南4号
电话: 0769-33287982  33287983  33256671  33256670 
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联系人：业务代表  薛强
阿里旺旺：knscha 
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手机：13686228225

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网址：http://www.jurccap.com

X电容是用于差模滤波的,即并联于输入的两端.滤除L,N线之间的差模信号;Y电容用于共模滤波,它接于L于地或N于地之间,滤除L对地或N对地的共模信号,(Y电容通常对称使用)  它们都是安规电容. 在交流电源输入端,一般需要增加3个安全电容来抑制EMI传导干扰。  交流电源输入分为3个端子：火线（L）/零线（N）/地线（G）。在火线和地线之间以及在零线和地线之间并接的电容,一般统称为Y电容。 这两个Y电容连接的位置比较关键,必须需要符合相关安全标准, 以防引起电子设备漏电或机壳带电,容易危及人身安全及生命。它们都属于安全电容,从而要求电容值不能偏大,而耐压必须较高。一般情况下,工作在亚热带的机器,要求对地漏电电流不能超过0.7mA;工作在温带机器,要求对地漏电电流不能超过0.35mA。因此,Y电容的总容量一般都不能超过4700PF（472）。  特别指出：作为安全电容的Y电容,要求必须取得安全检测机构的认证。Y电容外观多为橙色或蓝色,一般都标有安全认证标志（如UL、CSA等标识）和耐压AC250V或AC275V字样。然而,其真正的直流耐压高达5000V以上。 必须强调,Y电容不得随意使用标称耐压AC250V或者DC400V之类的普通电容来代用。  在火线和零线抑制之间并联的电容,一般称之为X电容。由于这个电容连接的位置也比较关键,同样需要符合相关安全标准。X电容同样也属于安全电容之一。根据实际需要,X电容的容值允许比Y电容的容值大,但此时必须在X电容的两端并联一个安全电阻,用于防止电源线拔插时,由于该电容的充放电过程而致电源线插头长时间带电。安全标准规定,当正在工作之中的机器电源线被拔掉时,在两秒钟内,电源线插头两端带电的电压(或对地电位)必须小于原来额定工作电压的30%。  作为安全电容之一的X电容,也要求必须取得安全检测机构的认证。X电容一般都标有安全认证标志和耐压AC250V或AC275V字样,但其真正的直流耐压高达2000V以上,使用的时候不要随意使用标称耐压AC250V或者DC400V之类的的普通电容来代用。  通常,X电容多选用纹波电流比较大的聚脂薄膜类电容。这种类型的电容,体积较大,但其允许瞬间充放电的电流也很大,而其内阻相应较小。普通电容纹波电流的指标都很低,动态内阻较高。用普通电容代替X电容,除了电容耐压无法满足标准之外,纹波电流指标也难以符合要求X capacitance is used in differential mode filter, i.e. parallel to the input ends. Filter L, N line between the differential mode signal; Y capacitors for common mode filter, which is connected to the L or N in between, filter L to ground or N on the common-mode signal, (Y capacitors usually symmetrical use) they are all on the capacitor. The AC power input end, generally need to increase 3 safety capacitance to the inhibition of EMI conduction interference.AC power input is pided into 3 terminals: line (L) / zero line (N) / ground (G).In the live line and ground line and between the zero line and the ground wire is connected between the capacitor, generally referred to as the Y capacitor.The two Y capacitor connected position key, must need to comply with the relevant safety standards, in order to prevent leakage or by electronic equipment shell charged, easy to endanger personal safety and life.They all belong to the safety capacitor, which required capacitance value cannot be too large, and must be high pressure.In general, working in a subtropical machine, requirements on current cannot be more than 0.7mA; working in temperate machine, requirements on current not exceeding 0.35mA.Therefore, the total capacity of Y capacitors are generally not more than 4700PF (472).In particular: as the safety capacitor capacitance Y, must obtain safety inspection and certification bodies.Y capacitor is orange or blue, are generally marked with safety certification (such as UL, CSA logo) and pressure AC250V or AC275V.However, its true DC high voltage is above 5000V.Must emphasize, Y capacitor can not use the nominal pressure AC250V or DC400V such ordinary capacitor to substitute.In the firing line and the zero line of inhibition between parallel capacitor, commonly known as X capacitor.The capacitor is connected to the position is more critical, also need to comply with the relevant safety standards.X also belongs to one of the capacitors safety capacitance.According to the actual need, X capacitor capacitance value than Y capacitor capacitance values, but this must be in the X at both ends of the capacitor connected in parallel with a safety resistor, to prevent the power line plug, the capacitor charging and discharging process due to long time electrification power line plug.Safety standards, as are working machine power line was pulled out, in two seconds, power line plugs are electrically charged voltage (or potential to ground) must be less than the rated voltage of the 30% original.As one of the capacitors X capacitor, also must obtain safety inspection and certification bodies.X capacitors are generally marked with safety certification mark and the pressure AC250V or AC275V words, but its true DC high voltage is above 2000V, use time don t use nominal pressure AC250V or the DC400V and so on ordinary capacitor to substitute.Usually, X capacitor ripple current compared with polyester film capacitor.This type of capacitor, volume is larger, but it allows instant charging and discharging current is large, and its internal resistance is smaller.Ordinary capacitor ripple current indicators are low, high dynamic resistance.Ordinary capacitor to replace X capacitor, capacitor voltage can not meet the standard. In addition, ripple current indicators are also difficult to meet the requirements





高压瓷片陶瓷电容151K 400V电容Y2安规Y安规陶瓷电容功率电源用