DSH 262 Application of the tests depending on the insulation class, measurement

小米

广东安规检测
有限公司提供：

小型摆管淋雨试验机

IPX5X6X7喷水试验机

1000L恒温恒湿箱

各种试验指现货

可程式恒温恒湿试验箱

水平垂直燃烧机

自动卷线器试验机

耐划痕试验机

各种灯头量规现货

灼热丝试验机现货

GB1002插头量规

IPX1-X7淋雨现货

IEC61347/UL935镇流器热试验箱

灯具防风罩

IK冲击试验机

UL498插头插座量规

VDE0620插头插座量规

稳定性试验台

家电温升测试角

针焰试验机现货

热电偶焊机现货

家电125mm试验指

E12灯头量规

无绳壶无绳电熨斗插拔寿命试验机

IEC60335试验指甲

DSH 262 $ X/ c) J4 |4 R8 @% Q

Application of the tests depending on the insulation class, measurement of temperature on motor wind ...

11.5, 11.6 ' W. v( j  Z5 I' N# J& A* D0 A, f

60745-1(ed.2) + a- |+ x' f) [1 g7 }+ f/ }

Standard: IEC60745-1, Ed.2 Sub clause: 11.5, 11.6 Sheet n. 262
Page 1(1)
Subject: Application of the tests
depending of the insulation
class, measurements of
) M$ U6 u5 J3 f2 ~; Btemperature on motor
: O. a0 m; O. x0 J% Iwindings
Key words:
- insulation class,
, Q" h1 S/ c" l6 ]: o; R3 \, ^2 G- resistance variation,
- infrared,
- windings
Decision n. 18 taken
1 N( X; M- a' c+ z' ^, l5 c  J) |at 35th meeting/1998
& Y5 }* g* |! \4 P4 [2 C! |# p) qQuestions:
3 z9 M  ?0 S& t; T: U1 - During the heating test the temperature of a known insulation class system exceeds the
' Z2 `$ N+ j3 |temperature limits specified in sub-clause 11.5. In this case, is it possible to jump multiple
8 Q* Y  c) [! S% w( kinsulation classes when using 11.6. (This would mean that the test of clause 11.6 is
5 c# [5 K$ `' \) C; Tapplicable whatever the value of exceeding temperature rise) ?
; c+ C+ L. h* m! l9 s* d$ f3 c  c2 – How is the measurement of temperatures on armatures windings performed, specially
when the windings of the rotor are not easily accessible? Is it possible to use infrared guns?
0 {( @! _4 v. c; R+ `7 hDecisions:
1- The clause 11.6 is applicable for any temperature rise value independently of the
insulation class
6 D$ h4 X( v. y! b, L8 ]& G4 @2- Resistance variation method is generally used, dismantling the motor and extrapolating
2 j) v, M( u8 v5 I% s* J. mwith a resistance/time curve, if necessary.
9 d) h7 r& M  P  J7 L, T3 I; ~+ rOther methods (Infrared , thermocouples) are not widely used and need to be confirmed.
; f2 |0 ^4 E1 Y$ i8 U* w