1-59
Table 1-6.Wrong Stator Connections, Rotor Wiring Correct
SETTING OR
CONDITIONS
INDICATION
TROUBLE
TX set to 0º and rotor turned
smoothly counterclockwise
TR indication is wrong, turns
clockwise from 240º
S1 and S2 stator connections are
reversed
TR indication is wrong, turns
clockwise from 120º
S2 and S3 stator connections are
reversed
TR indication is wrong, turns
clockwise from 0º
S1 and S3 stator connections are
reversed
TR indication is wrong, turns
counterclockwise from 120º
S1 is connected to S2, S2 is
connected to S3, and S3 is
connected to S1
TR indication is wrong, turns
counterclockwise from 240º
S1 is connected to S3, S2 is
connected to S1, and S3 is
connected to S2
Table 1-7.Wrong Stator and/or Reversed Rotor Connections
SETTINGS OR
CONDITIONS
INDICATION
TROUBLE
TX set to 0º and rotor turned
smoothly counterclockwise
TR indication is wrong, turns
counterclockwise from 180º
Stator connects are correct, but
rotor connections are reversed
TR indication is wrong, turns
clockwise from 60º
Stator connections S1 and S2 are
reversed, and rotor connections are
reversed
TR indication is wrong, turns
clockwise from 300º
Stator connections S2 and S3 are
reversed, and rotor connections are
reversed
TR indication is wrong, turns
clockwise from 180º
Stator connections S1 and S3 are
reversed, and rotor connections are
reversed
TR indication is wrong, turns
counterclockwise from 300º
S1 is connected to S2, S2 is
connected to S3, S3 is connected to
S1, and rotor connections are
reversed
TR indication is wrong, turns
counterclockwise from 60º
S1 is connected to S3, S2 is
connected to S1, S3 is connected to
S2, and rotor connections are
reversed
In a control system, the trouble may be slightly more difficult to isolate. However, the existence of
trouble is readily indicated when the system does not properly respond to an input order. For control
systems, it is easier to locate the trouble by using a synchro tester or by checking the operating voltages.