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标准上有的:
5 Y8 ^; P$ `1 MTo allow for the fact that the average temperature of windings of universal motors, relays, solenoids and
6 |' S+ l' m& Q9 r/ l( Z" Q- Z' Rsimilar components is usually above the temperature at the points on the windings where thermocouples are& Q3 z) G6 S" Z0 `
placed, the figures without parentheses apply when the resistance method is used and those within
6 M# U, [5 x: L7 nparentheses apply when thermocouples are used. For windings of vibrator coils and a.c. motors, the figures% h- l6 Y. p4 H( w+ |
without parentheses apply in both cases.
. [5 g' Y! Y/ a n1 g4 }% v. o5 L! z......
4 q$ Z0 U5 S% R9 v! }简单来说,基本上括号内的适用于热电偶发,括号外适用于电阻法 |
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