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I reckon you have this motor winding set up(Dahlander/pole changing) as in the attachment.
The six wires are brought out to the 6 terminals as the triplets 1V, 1U and 1W and 2U, 2V and 2W and connected as in the diagram at attachment.
To effect pole changing one swaps the 3 lines L1, L2 and L3 between these triplets and when the lines are connected to 2U, 2V and 2W one connects 1U, 1V and 1W together.
3 Lines to the series delta is for slow speed by making an 8 pole(4 pole pairs) machine with speed of 750 rpm and 3 lines in parallel star for 4 pole (2 pole pairs) with sync speed of 1500 rpm.
[automerge]1576526838[/automerge]
The motor terminal is:
W2 U2 V2
U1 V1 W1
but photographed upside down
W1(Blue) V1(Green) U1(Orange)
V2(Brown) U2(Black) W2(Gray/Light Brown)
The six wires are brought out to the 6 terminals as the triplets 1V, 1U and 1W and 2U, 2V and 2W and connected as in the diagram at attachment.
To effect pole changing one swaps the 3 lines L1, L2 and L3 between these triplets and when the lines are connected to 2U, 2V and 2W one connects 1U, 1V and 1W together.
3 Lines to the series delta is for slow speed by making an 8 pole(4 pole pairs) machine with speed of 750 rpm and 3 lines in parallel star for 4 pole (2 pole pairs) with sync speed of 1500 rpm.
[automerge]1576526838[/automerge]
The motor terminal is:
W2 U2 V2
U1 V1 W1
but photographed upside down
W1(Blue) V1(Green) U1(Orange)
V2(Brown) U2(Black) W2(Gray/Light Brown)
Attachments
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