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|  DSH 2627 @9 K @: ~5 V2 s4 k
" P/ `; w! y% Q$ y# M/ N/ I( l | Application of the tests depending on the insulation class, measurement of temperature on motor wind ...8 p1 p% D0 s! D0 K+ }
| 11.5, 11.61 u3 t. K: A" `" o# ^) N" h
| 60745-1(ed.2)
# M# ^7 q; E" h: l2 R4 F |
7 r. B9 _/ h( @6 u
Standard: IEC60745-1, Ed.2 Sub clause: 11.5, 11.6 Sheet n. 262
3 [3 z5 I! w5 {6 GPage 1(1)
% [ f# R( x) r, s' S$ h" {Subject: Application of the tests) }, h8 Z1 k! P* ?, c9 C
depending of the insulation
& B# @, h+ V0 h; o4 n- l4 r$ K# S) p: yclass, measurements of
; p, A$ R' b: I9 Y. J8 y2 ntemperature on motor8 o9 i8 l: u5 S b! Y
windings6 }2 O v; f8 d! c
Key words:
0 ^$ }: @" X0 B% [7 b5 O- insulation class,7 y) D8 |9 S! s+ _& x
- resistance variation,
+ u8 r) C* b; m# U8 x- infrared,7 j/ k7 `( f) b4 D3 R# H% b
- windings, ^0 ?9 b9 ~/ x, D7 Q
Decision n. 18 taken! T0 Z6 G1 o4 p p
at 35th meeting/1998
1 o# t) ~) i* l/ C& ~Questions:
I2 i2 ~) s9 o7 {3 K1 - During the heating test the temperature of a known insulation class system exceeds the4 F8 I5 \7 j9 Y* t; P" @, _
temperature limits specified in sub-clause 11.5. In this case, is it possible to jump multiple7 u& ^$ R5 z0 W; O5 E
insulation classes when using 11.6. (This would mean that the test of clause 11.6 is
1 }: t' s$ _' xapplicable whatever the value of exceeding temperature rise) ?& h+ X2 \% O9 H0 ?% U( [- U, {
2 – How is the measurement of temperatures on armatures windings performed, specially
3 `: E: \5 M9 }( }when the windings of the rotor are not easily accessible? Is it possible to use infrared guns?
D+ K6 P/ E4 z/ u. X5 ?Decisions:
* t1 I. e5 o9 ~0 q1- The clause 11.6 is applicable for any temperature rise value independently of the5 R& s. u: N% O0 g S& z* M
insulation class
% {% H% u( c; x: D6 ~5 N% `6 T2- Resistance variation method is generally used, dismantling the motor and extrapolating
3 z- K. C$ Z' j7 a; i2 Dwith a resistance/time curve, if necessary.8 x' t% Q$ j" t/ `9 z, y9 B
Other methods (Infrared , thermocouples) are not widely used and need to be confirmed.* L& |+ R( F% V- p, p# F1 n1 q
2 m- |* T0 `/ t/ w1 K& u
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