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Six single phase winding portions are installed in slots disposed at a ratio of two per phase per pole. Each single-phase winding portion has two wave windings formed by winding a conductor wire for a predetermined number of winds into a wave-shaped pattern composed of slot-housed portions disposed

Six single phase winding portions are installed in slots disposed at a ratio of two per phase per pole. Each single-phase winding portion has two wave windings formed by winding a conductor wire for a predetermined number of winds into a wave-shaped pattern composed of slot-housed portions disposed at a pitch of six slots in a circumferential direction and crossover portions linking together end portions of adjacent pairs of the slot-housed portions alternately relative to an axial direction, the wave windings being offset by six slots from each other circumferentially and installed in the slots such that the crossover portions face each other axially.

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Six single phase winding portions are installed in slots disposed at a ratio of two per phase per pole. Each single-phase winding portion has two wave windings formed by winding a conductor wire for a predetermined number of winds into a wave-shaped pattern composed of slot-housed portions disposed

Six single phase winding portions are installed in slots disposed at a ratio of two per phase per pole. Each single-phase winding portion has two wave windings formed by winding a conductor wire for a predetermined number of winds into a wave-shaped pattern composed of slot-housed portions disposed at a pitch of six slots in a circumferential direction and crossover portions linking together end portions of adjacent pairs of the slot-housed portions alternately relative to an axial direction, the wave windings being offset by six slots from each other circumferentially and installed in the slots such that the crossover portions face each other axially. of claim 1, wherein the power driver is a semiconductor bridge, and an output level of a connection of the semiconductor bridge is controlled by the operating switch. 11. The circuit of claim 1, wherein the switching element and the operating switch are arranged in a series connection to function as a logical AND-operation. 12. The circuit of claim 11, wherein the switching element is a switching transistor. 13. The circuit of claim 11, wherein the switching element is one of a switchable current source and a switchable voltage source. 14. The circuit of claim 1, wherein the switching element is a part of a gate to function as a logical AND-operation, and position of the operating switch connected with an input of the gate defines an input value of the gate. 15. The circuit of claim 1, wherein the power driver is configured to be actuated by a logical OR-operation of the operating switch and an automatic switching element. 16. The circuit of claim 2, further comprising: an additional switching element connected in parallel with the switching element; and an additional static memory storing an additional control level to control the additional switching element and having an output connected to the additional switching element. 17. The circuit of claim 1, further comprising: a microcontroller; wherein the electromechanical drive arrangement is switchable from a CLOSE direction to an OPEN direction by means of the operating switch, in that the drive arrangement is switched by the microcontroller without current for a minimal period of time between closing and opening. 18. The circuit of claim 1, further comprising: a microcontroller; a control unit; and an automatic switching element; wherein the switching element is connected to a supply voltage and to the power driver, the operating switch is connected to ground, to the power driver, via a pull-up resistor to the supply voltage and via a lowpass filter for debouncing, to the microcontroller, and wherein the automatic switching element is connected in parallel with the operating switch, in that the automatic switching element is connected with the ground and with the power driver, and the automatic switching element and the switching element are controllable by the microcontroller via a serial connection using a control level transmitted via the serial connection which is verifiable by the control unit. rcuits (23) and (24) control operations of relay drive circuits (21D and 22D) based on both detection signals so that any one of two relay contacts (21a and 22a) may be turned on. Since a voltage of the rectified output supplied to the main converter (6) may be detected and its detection signal also may be used for control, a detection timing can be made fast so that, even when the voltage of the commercially-available voltage is fluctuated suddenly, the rectification systems can be switched immediately.