埃德蒙顿华人社区-Edmonton China

 找回密码
 注册
查看: 3260|回复: 3

[技术互助] A Tip on changing 3 phase AC motor rotation

[复制链接]
鲜花(0) 鸡蛋(0)
发表于 2010-4-14 11:27 | 显示全部楼层 |阅读模式
老杨团队,追求完美;客户至上,服务到位!
本帖最后由 td456 于 2010-4-14 12:28 编辑 " ]. b6 L4 _% Y2 Q, m

( o% x8 B1 n9 b9 yWe all know that if you want to change the rotation of a three  phase AC motor.1 w  U+ H; L; r; S$ k( k
Just swap any of the two phase leads.* l* _5 C8 R. J$ w1 s9 p
But for VFD application you need to do the swap after the inverter.
- I4 t3 E2 @; E1 e: ?9 BIf you swap the leads before the inverter, it will not work.
鲜花(0) 鸡蛋(0)
发表于 2010-4-14 18:18 | 显示全部楼层
go go go
鲜花(0) 鸡蛋(0)
发表于 2010-4-19 14:38 | 显示全部楼层
Yes, Good point.
: l8 ]- Z2 y9 L& ~# y& b. G
1 D, b: }5 Y9 i$ n! z5 @0 r# RAs the principal of the VFD works, bascially from AC to DC, then DC to AC. % q; y0 b% H5 M! P. n0 k9 b+ N1 I5 c

8 z9 J( w# M% ~3 {" s$ jThe phase rotation of the output of the VFD connecting to the motor is based on the sequence "open" or "close" controlled by the inverter pre-set inside; any changes to the phase rotation of the feeder will not affect the DC rotation, as DC is NO phase at all.
0 r& g6 t7 c# B4 j
0 X2 D: x  m( S  U" NThe only thing you can change the rotation of the motor is the output side of the VFD, NOT the input of the VFD.
鲜花(0) 鸡蛋(0)
发表于 2010-7-4 00:19 | 显示全部楼层
老杨团队 追求完美
k vo0u8p["
您需要登录后才可以回帖 登录 | 注册

本版积分规则

联系我们|小黑屋|手机版|Archiver|埃德蒙顿中文网

GMT-7, 2026-4-6 08:57 , Processed in 0.218930 second(s), 17 queries , Gzip On, APC On.

Powered by Discuz! X3.4

Copyright © 2001-2021, Tencent Cloud.

快速回复 返回顶部 返回列表