|
|
|  DSH 543AA# R+ Y2 }9 j2 c& D& W
0 |) O0 }* Q) v
| Representative test Voltage for induction motor-compressors0 Y5 E) E( M# \6 y
| 4.8.1(3rd)/5.8.1(4th)
( S' ~7 O2 U6 r0 e | 60335-1(ed.3) & 60335-1(ed.4)
% I* s" T8 `, a) J: e+ V" P |
! j& {' l- Y+ v
Question:. ]$ m3 H- M u, J3 T6 K# y, z
For locked rotor testing of induction motors, is testing at 50 Hz considered more severe than 60 Hz.
. q7 n& f, r4 r' `3 F% `testing, so that locked rotor testing at 50 Hz can be considered representative of testing at 60 Hz?9 n; P8 Z3 k; ~5 `. Q% n+ ^
Proposal (if any):
' K5 L, l2 e& KFor induction motors including motor-compressors rated 50 and 60 Hz, with the same rated, l. D7 B: g6 j7 |& F" J5 g; c% S
voltage(s) at each frequency, locked rotor testing at 50 Hz is considered more unfavorable.
" X( n9 o/ ^6 J4 Q& P) pFor induction motors including motor-compressors rated 50 and 60 Hz, locked rotor testing at; M7 n3 `( [0 `. g( j
50 Hz, at the highest rated voltage(s) is considered to be the more unfavorable condition. For1 W) `- q5 S% e, y! z2 J! N. Z" ?
induction motors including motor-compressors rated 60 Hz, locked rotor testing at 50 Hz and, N7 r {+ k2 B. t& c' M
rated voltage(s) is considered more unfavorable.
/ y! Y5 W/ B( V9 O! O% v- v
/ E3 {3 l( l& [, k9 n; `2 R' r" W$ B9 J5 e0 n6 l! `' I3 w5 {
|
本帖子中包含更多资源
您需要 登录 才可以下载或查看，没有帐号？注册安规
x
|
/2 
|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 2012-9-9 16:11
收藏
分享
好帖
鸡蛋
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡