Electric motor: connection by the triangle


How to connect the electric motor the triangle?

To switch electric motor windings from "star" to "triangle" - business not it and difficult. But let's consider one more interesting moment. All electric motors of factory execution have 6 ends (conclusions) and to switch windings to other tension of works big does not make. And engines which have only 3 conclusions meet, that is "star" is hidden in the scheme of unsoldering of windings and is inside. With 3 conclusions electric motors generally come from rewind.

Схема подключения однофазного электродвигателя

Scheme of connection of the single-phase electric motor.

 We will also be engaged in this question, we will remove 3 wires which are not getting to us.

The first, we disassemble completely the electric motor. After dismantling we overturn the stator the scheme to top and we knife the bandage.

We do everything accurately not to cut what be the wire and not to damage isolation.

All pieces of the knitting tape or twine are farther we delete. The winding was impregnated with varnish and the tape was pasted, here it accurately all should be taken. It is possible to use tweezers, it is possible combination pliers. Undermine so that not to damage the winding wire. If there are tape pieces in the slot between the winding and the body of the stator, then let remain and if from the inside where there will be the rotor, then it is necessary to remove under the root, differently it clings to the rotor, making the sound.

Схема подключения электродвигателя по схеме "треугольник"

The scheme of connection of the electric motor according to the scheme "triangle".

When the knitting tape is removed, we undermine junctions of coils. All of them are double, that is 2 wires connect and isolated, tubules (cambrics) most often put on, and can be simply isolated by the insulating tape. But among the coupled connections one will be from 3 wires, it also is the star. I will a little recede back when the tape was removed, look attentively , maybe, at this star, you will see at once and then it will not be necessary to disturb all winding. In my case it was necessary to raise almost all connections moreover the engine was in rewind, and the master very honestly prolachit it, hardly were undermined.

Further we disunite these 3 wires, and we solder the conclusion to everyone section such, as in barn. We stretch new conclusions in barn, accurately we stack them on the winding and again into place we coordinate everything. It is possible on old paths. For coordination we do the needle of the copper wire, with a section of 0.5-0.8 mm, we insert thread, it is possible kapron, and "we sew". When everything is coordinated, it is desirable to miss the mark all our work with varnish, it is better oil. It is simple to paint with the brush  in order that the disturbed wires did not move to the operating time. After varnish dried, we assemble the electric motor.

Now let's understand that at us turned out. Conclusions which we had in barn we will mark   C1, C2, C3, the tester, the sampler or ring-up found the second end - C1 and mark it with C4,  C2 - its second end C5, and the remained wire we mark C6. Now we connect our tips in the following order  (C1+C6), (C2+C4), (C3+C5). Here also we switched windings according to the scheme to the triangle. As you can see, everything is simple.

COMMENTS
  1. Mikhail

    the electric motor of 15 kV is heated the winding was connected by the triangle. Connected the star.

    To answer
  2. Alex

    Tell me please what is necessary the condenser for the engine, for the IE 9703 tool-grinding machine, it is connected by the triangle, P =200vt, 2700ob/min.

    To answer
  3. Name Amur

    tell me please. bought the overlok on z80volt 400 watts I want to remake on 220 volts … the master came put the condenser. it seems starts and at loading does not pull. the reason stalls … in what. Sasebo … can the motor it is necessary remake … the master told the condenser unusable and left

    To answer
  4. Alexander

    how many Ohms the starting and actuating coil and what starting condenser for earlier thanks

    To answer
  5. Alexander

    And how many Ohms the starting and actuating coil and what starting condenser if are possible that the scheme for earlier thanks

    To answer
  6. roman

    Hello. Tell me please how visually to define connection of the ends of the engine 127/220 (it is initially connected on 3*127v) connection by the triangle inside (all connections on two wires). For work on 220 it is necessary to switch to the star.
    Thanks.

    To answer
    • admin

      From where you know that it is connected by the triangle? You look more attentively, the star can there. Usually at delta connection, all ends are removed in barn.

      To answer
      • roman

        Already understood. It is the engine of the miner's sverdl SER-19 3 phases on 127B, that is connections only the star, but I did not consider that in connection of the beginning and end of the winding there has to be still the third wire — the conclusion in borno (probably), the other day I will try to unwind to look, it in hermetic execution and coils are wound very much on conscience there, I do not know whether it will turn out accurately not to damage. Thanks for prompt reply.

        To answer
        • admin

          The novel, describe in more detail everything that is visible. The label on it is also the conclusion in barn. If in barn from the winding 6 leaving wires and they are visible then connect in pairs. That is the triangle. Do not break yet, and describe the situation.

          To answer
          • roman

            In borno only three wires.

          • roman

            at connection on 220v takes bigger current and strongly hoots.

          • roman

            Label — SER-19M 127V, 1,2kvt

          • admin

            On 220 as you start, with the rope or with condensers?

          • roman

            Rope
            Already began to unwind as though it turns out.

          • admin

            Let's hope that it from ex-recops was not roasted. But if it is written on the label only 127, then there can be nothing.

        • roman

          It was not roasted. The internal triangle, therefore the engine 127/220B found connections (until two ends of windings on one exit in borno) connection. I will remove 6 ends in borno now and then to put back windings. If to whom I can interestingly post the photo.

          To answer
          • admin

            Yes 127/220 means. The novel — the ends you will understand the beginnings? It is necessary not to be mistaken. Yes, remove in barn, and then already to look for the beginnings and the ends.

          • roman

            I will understand. A year ago disunited the star and removed outside, the truth on 2,2kvt.

  7. Andrej

    tell please there are features of soldering of wires - simply to solder, twist and then to solder? and whether it is possible to take the wire 1-2 orders higher? and I so understood the wire has to be flexible.

    To answer
    • admin

      As I understood, it is necessary to solder the conclusion. It is necessary to take multicore. To connect twist, and then to solder.

      To answer
  8. Nykolay

    How to define after extraction from the stator of the soldered ends what what conclusion of C1 of C2 and what C3 if texts did not remain?

    To answer
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