【选型】圆筒保险丝CA433系列,最高额定电流30A,最大电压1000V,是工业电源输入保险丝国产化最佳选择
工业电源输入电压一般在AC380V-690V,其输入的保险丝选型时一般需要选高达1000V耐压的保险丝。目前1000VAC的高压保险丝多以进口为主,在目前国产化的需求下,电安科技推出的CA433系列高压大电流管状保险丝,解决了工业电源输入保险丝国产化的问题。
如图1所示,是一个工业电源的原理框图,也是一个典型的ACDC电源电路拓扑,其输入一般为交流三相电输入,经过三相整流后再IGBT逆变整流输出。ACDC工业电源输入的每相电需要串联一个保险丝,当后级比如三相整流或者IGBT出现直通短路等情况时,保险丝可以及时断开,防止产生二次损坏造成更大的损失。由于是在输入端,保险丝时刻面临雷击、开机瞬间等突发现象,因此所承受的瞬间峰值能量比较大,此时要求保险丝具备较高的分断能力。
图1 典型的三相电输入工业电源的原理框图
考虑以上选型需求,加上现在国产化的要求,电安科技推出了CA433系列高压大电流管状保险丝,其应用优势如下:
1、耐压高,同时覆盖范围广,耐压范围覆盖了500V/600V/660V/1000V AC/DC的产品,满足大部分工业输入的耐压需求。以输入AC380V的ACDC工业电源模块为例,选择电压500VAC等级的CA433 V3系列的保险丝,即可满足耐压等级要求;
2、额定电流大,最大高达30A,可满足10KW左右的电源的输入防护需求。以12KW的三相AC380V输入工业ACDC电源模块为例,其相电流计算I=P/(U*1.732)=12000/(380*1.732)=18A,考虑电压波动选择20A的保险丝,推荐20A保险丝料号CA433A020;
3、工业电源输入时刻面临雷击等各种浪涌冲击的考验,高达30KA的分断能力,大大提高保险丝在复杂的电网环境工作的可靠性;
4、封装采用6mm*32mm带引线和不带引线封装,兼容市场上进口品牌保险丝,可直接替换如Littelfuse的505系列保险丝,国产化器件,性价比和交期好;
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应用方案 发布时间 : 2022-01-20
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型号- MF551,CQ06PF,477,HV610,F0603FA,CC12H,CQ12LH,SF331,241,244,245,246,SEF,247,525,CQ12LV,ABC-V,ABC,SET,FLU,PB03,PB05,12CF,F1206SB,24110,3216FF,HV110,CC221,UBM,25H,HV640,429,1206FT,SPF,MDA,F1206HA,CQ06LF,MDA-V,F1206HB,UDA,435,314,6125FA,1206FA,437,CA422,CC204,438,CC203,CC202,CA421,CC201,HV650,CQ12PF,440,682,441,683,443,324,325,CA435,326,CA433,CA434,SEF(G),CC213,CA432,CC212,606,HV660,CC211,F1206FA,6125TD,ADA/APA,AF22410,691,692,451,452,453,454,456,215,458,216,F0402FA,614,0402FT-V,HV670,MF501,S505,S501,3216TD,SF302,SF303,SF301,ABE/ABP,466,501,SF304,504,505,506,0603FA,HV680
对照表 - 电安科技
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