Baldor MN850 用户手册

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页码 70
D-2 Voltage Surge Protection
MN850
Figure D-2  WYE Configurations 
Ungrounded
L1
L1
L2
L3
L2 L3
T1 T2 T3
Control 
Enclosure
Symbol
Grounded or
High Resistance Ground
L1
L1
L2
L3
L2 L3
T1 T2 T3
Control 
Enclosure
Symbol
Do not ground MOV.  Cut off green wire and insulate (cap off) with wire nut.
MOV
MOV