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标题: 墙式插座温升疑问 [打印本页]
作者: Seyfield    时间: 2010-6-23 13:44
标题: 墙式插座温升疑问
各位专家，现在遇到一个问题，我有个墙式插座按60884做温升7 c; F9 p2 E2 F+ d

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但是问题是遇到了无负载，我们的负载最大拖到10A .- t$ X/ r$ P  }* p; k

: @3 H" p# l7 Q8 O' q( ]1 c7 w7 @于是想用直流电子负载通直流电做温升,所以想问问大家这样可以不可以，直流电做温升和交流电做温升有没有区别。0 a( x5 X* h( O+ {6 w) B
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如果单从Q=I平方Rt来判断的话，好像是可以的。。。。温升只与电流有关6 f7 p( j. F; P* }8 d# ?

: Z" M2 s; r* O另外有谁知道哪里有买温升的负载电阻的吗，能不能推荐一下，顺带报价
作者: Andy.Yang    时间: 2010-6-23 14:39
引用第0楼Seyfield于2010-06-23 13:44发表的 墙式插座温升疑问 :& E5 v1 M  O* ~  x
各位专家，现在遇到一个问题，我有个墙式插座按60884做温升8 I; E) O; N' P; l2 c; b1 `
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22A 1h
" _% X9 S6 f0 c; p3 q: M( b. z, e
& g2 D7 c, h& G* W' W但是问题是遇到了无负载，我们的负载最大拖到10A .( q! ~! O+ B  _, u' h, k4 [
.......
Yes, you've already known the objective of the temperature test, that's making the current to the biggest level, then let your EUT have the biggest power consumption, that's the situation of the temperature test..+ {0 R7 V( V: k4 t; B" R
About where you can get the load, I've no idea, but you can make this kind of load by yourself, normally, this kind of load is combined of resistors and inductors....
作者: Seyfield    时间: 2010-6-23 15:19
引用第1楼bub01于2010-06-23 13:54发表的  :
9 a7 q7 }" c% Q+ H1 z! q# y% z没做过，没法给你确切的信息，不过我询问别人后，看看有没有答案
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) k- q6 _, F; A# y好啊，有答案，告诉我一下
作者: Seyfield    时间: 2010-6-23 15:37
引用第2楼Andy.Yang于2010-06-23 14:39发表的  :
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: }/ a- I+ U7 C. E) _Yes, you've already known the objective of the temperature test, that's making the current to the biggest level, then let your EUT have the biggest power consumption, that's the situation of the temperature test..
' u* ?8 o+ L# VAbout where you can get the load, I've no idea, but you can make this kind of load by yourself, normally, this kind of load is combined of resistors and inductors....

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but you don't tell me the difference between DC temperature rise test and AC temperature rise test....so pls. kindly help me ,since I've thought you are an expert.
作者: week    时间: 2010-6-23 15:48
那些做測試儀器的就該有,可打電話問問..
作者: zy3618    时间: 2010-6-23 22:54
论坛中有做仪器的，搜索一下。
作者: Jiaheng    时间: 2010-10-26 13:59
做温升测试时，DC和AC都是可以被接受的，只要电流大小相同。因为部件的发热还是根据I*I*R来确定
作者: 山炮    时间: 2010-10-26 23:24
最简单是买只低电压大电流输出的变压器，加上肯定已有的自耦变压器，要多少A有多少A，最好串个0.2欧的大功率电阻，以平滑开关接触电阻的变化而引起的电流变化。
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例：0 @$ R; X  \' {+ G/ Y
    变压器：6V，100VA；大功率电阻：0.2欧，5只1欧10W水泥电阻并接；电流监控：万用表测电流，但不得使用原表笔线。



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