本帖最后由 td456 于 2010-2-21 17:29 编辑 . K, [; S: Q6 N1 m# a. A; o0 @6 H j* I: M7 t5 U
When open a motor connection box, ; K# g% {# `. V( |6 V: x, \3 sBeside three phase wires for the power," H& H* O: n: c9 w
We have another two wires marked as P1 and P2 ! ?, J0 b5 C8 |& h# lWhat is that for(P1, P2)? - L2 A: A' {: a* }Most of the time, they are not used.0 m$ `, D. c4 Y( Y8 l
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Thanks!
Good question! 8 a$ p; B `! U, X. F H 6 ]' O, s/ Q. i$ j ? fI think the two leads P1 and P2 are for the thermal switch (mostly normal close), use multimeter to check out.. j9 ]) l( }# B/ [* [: s, M