the load is very low

open in no volt coil in starter

very low rated voltage

the fault in over load relay

Improper function of relay contact

Improper phase sequence

Abnormal fluctuation in line voltage

open in holding circuit

changing any two leads connection of stator input

changing all the three leads connection of stator

changing the output connection of stator

changing the connection in terminals star to delta and delta to star

starter frequency

number of poles

the current flow in stator winding

the applied voltage

960 R.P.M.

1000 R.P.M.

1400 R.P.M.

1500 R.P.M.