|
|
|  DSH 2622 v9 J5 o, b" U) Q8 S
1 @9 U: s7 V( l. W0 m | Application of the tests depending on the insulation class, measurement of temperature on motor wind .../ O6 ~5 I- |8 V9 ?1 z7 k9 ^* n
| 11.5, 11.6) l8 q: [& `# O8 }! D4 Q' }
| 60745-1(ed.2)
3 H( q! R3 G, Q- `9 |# X |
9 U. u9 C# c) e* E
Standard: IEC60745-1, Ed.2 Sub clause: 11.5, 11.6 Sheet n. 262
8 s3 k8 k7 \6 I1 V7 G" kPage 1(1)
" D" A6 i0 x6 [4 q/ l2 Z3 \8 g9 L8 lSubject: Application of the tests
+ z7 w: a5 E8 q% y; U+ j" kdepending of the insulation
& N# u% o, v- f: O- ?" x$ v6 Gclass, measurements of' B3 X- N3 J0 y; s. {) \! A& s% O
temperature on motor
& x7 X% l" f* x, i, {+ i* mwindings
' z2 D2 N6 U, a- `# a8 Q; ^$ [0 KKey words:
4 G( F8 n) Q8 [" L; m% a! j- insulation class,
+ H3 ^* J4 m# Q W: w: P, O3 E+ _- resistance variation,
$ A$ x3 l. k4 R- infrared,; g4 \7 W( Y" _3 |. I. j+ j
- windings1 g, f, |$ M' M+ f9 h
Decision n. 18 taken
* B* Z4 _. i% |' u+ v7 T8 `at 35th meeting/1998: S& w" Z* g* R# n6 l
Questions:
0 N1 @, u( ?* _1 - During the heating test the temperature of a known insulation class system exceeds the
% q4 j9 [ ?. X' t X0 Q( Dtemperature limits specified in sub-clause 11.5. In this case, is it possible to jump multiple# h4 O4 V: T: V
insulation classes when using 11.6. (This would mean that the test of clause 11.6 is+ {7 R5 j0 | W: k( g$ }) N: z/ S
applicable whatever the value of exceeding temperature rise) ?
& `3 |3 |/ e/ T- H6 A' M2 – How is the measurement of temperatures on armatures windings performed, specially/ l. S, c/ c" [6 [+ I% R, A! i
when the windings of the rotor are not easily accessible? Is it possible to use infrared guns?
8 I' @9 ]( \+ P. {Decisions:- c5 r, X* W1 C- O2 [
1- The clause 11.6 is applicable for any temperature rise value independently of the* S6 h3 |: r9 N% {* J8 J
insulation class0 ^& h8 J* ?, ~0 v1 x
2- Resistance variation method is generally used, dismantling the motor and extrapolating
& {1 [' n W5 g9 g @5 f2 jwith a resistance/time curve, if necessary.
! `. k6 _5 k6 p8 L8 uOther methods (Infrared , thermocouples) are not widely used and need to be confirmed.5 |( m% t% b- o Y9 y
+ k5 b) u2 l9 B! o0 I' t) a |
本帖子中包含更多资源
您需要 登录 才可以下载或查看，没有账号？注册安规
x
|
|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网
( 粤ICP13023453-10 ) 
窥视卡
雷达卡
发表于 2012-11-8 15:32
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡
