How the conclusions of the windings of electrical machines are indicated

When connecting the stator windings of three-phase AC machines, the current star adopted the following designations for the beginning of the windings: the first phase — C1, the second phase is C2, the third phase is C3, the zero point is 0. With six outputs, the beginning of the windings of the first phase is C1, the second is C2, the third is C3; end of the winding of the first phase — C4, second — C5, third — C6.

When you connect the windings in a delta, the terminal of the first phase is C1, the second phase is C2, and the third phase is C3.

Three-phase asynchronous motors have a rotor winding of the first phase — P1, the second phase — P2, the third phase — P3, zero point — 0. asynchronous multi-speed motors winding terminals for 4 poles — 4C1, 4C2, 4С3; for 8 poles — 8С1, 8С2, 8СЗ, etc.

For asynchronous single-phase motors, the beginning of the main winding is C1, the end is C2; the start of the starting coil is P1, the end is P2.

In low-power electric motors, where letter designation of lead ends is difficult, they can be marked with multi-colored wires.

When connected in star, the beginning of the first phase has a yellow wire, the second phase is green, the third phase is red, the neutral point is black.

With six terminals, the beginning of the phases of the windings have the same color as in star connection, and the end of the first phase is yellow and black wire, the second phase is green with black, the third phase is red with black.

For asynchronous single-phase electric motors, the beginning of the output main winding — red wire, end — red with black.

In the starting coil, the beginning of the output is blue wire, the end is blue with black.

In DC and AC collector machines, the beginning armature windings are indicated in white, the end is white and black; Start serial field winding — red, end — red with black, additional pin — red with yellow; start of parallel winding of the field — green, end — green with black.

For synchronous machines (inductors), the start of the exciter winding is I1, the end is I2. For DC machines, the start of the armature winding is Y1, the end is Y2. The beginning of the compensating coil is K1, the end is K2; auxiliary winding of the pump poles — D1, end — D2; the beginning of the sequential excitation winding — C1, the end — C2; the beginning of the parallel excitation coil — Ш1, the end — Ш2; Start winding or leveling wire — U1, end — U2.