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6 - ELECTRIC CONNECTIONS
6.6 MOTOR TERMINAL LAYOUT
Direct starting with star connection.
Terminals U V W should be connected to
the line switch.
Polarity: 2, 4, 6, 8
Direct starting with delta connection.
Terminals U V W should be connected to
the line switch.
Polarity: 2, 4, 6, 8
Starting with star-delta connection.
Switch connection:
Starting:
terminals U V W to the three-phase supply
terminal Y to X and to Z (star connection)
Operation:
terminals U V W to the three-phase supply
terminal U to Z, V to X and W to Z (delta
connection)
Single start with switch (Dahlander).
Switch connection:
High speed:
terminals U V W to the three-phase supply
terminal Z to X and to Y
Low speed:
terminals Z X Y to the three-phase supply
terminals U V W open
Polarity: 2/4, 4/8
Two separate windings.
Switch connection:
High speed:
terminals Z X Y to the three-phase supply
terminals U V W open
Low speed:
terminals U V W to the three-phase supply
terminals Z X Y open
Polarity: 4/6
