Improved star-delta starter with current limiting reactor

The utility model relates to a star-delta starter, and discloses an improved star-delta starter with a current limiting reactor. The improved star-delta starter with the current limiting reactor includes three-phase four-wire terminals L1, L2, L3, and N; motor M armature terminals U1, V1, W1, U2, V2, and W2; and alternating current contactors K1, K2, K3, and K4. The improved star-delta starter with the current limiting reactor also includes a current limiting reactor RT1 and a control circuit, wherein the current limiting reactor RT1 is connected over the motor M armature terminals U1, V1, W1 and the motor M armature terminals U2, V2, W2. In the improved star-delta starter with the current limiting reactor, the current limiting reactor RT1 is connected over the motor M armature terminals U1, V1, W1 and the motor M armature terminals U2, V2, W2, and an impact current, in a short switchover process from a star shape operation to a delta shape operation, is reduced by the current limiting reactor RT1, so that st