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IEC60884.1第19章 温升测试里面有句话:
( j8 n+ ]' l2 r8 iThe plug is inserted into the socket-outlet and an alternating current as specified in table 20,
' d& M- w- _ U+ B y8 |+ O% ris passed for 1 h.(插头插入插座,通表20规定的交流电1h)/ E+ [; q8 {" l! Z. _! h' T! n1 D
这句话的意思是不是指明了温升测试的电压按插头或者插座的额定电压?
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Table 20 – Relationship between rating of accessories, nominal cross-sectional areas, s3 |( F, F8 B5 D1 N2 \
of test conductors and test currents for the tests of temperature rise8 w8 m* `& I4 G4 I, d
(clause 19) and normal operation (clause 21)
% b+ }( ]4 N' I( u! i8 T5 ]表20的这句话只是表明了电气附件的额定值,测试导体面积和测试电流的关系。是否电压就按额定值?3 j6 |- o; l6 h! I6 V
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假如电压是按电气附件的额定值的话,为什么很多实验室和市面上销售的温升测试仪器都采用低电压(小于12V)高电流呢?这样就只能保证电流不能保证电压了。- ?# y3 P# V$ `2 F2 d
z; W$ w; w! f& m+ Q* D期望插头插座的高手解答我的问题。: j* e+ G% M" w( @/ ]% C
谢谢 |
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