Stator Bars

Long-term, efficient operation of electric motors is ensured by regular checking of their condition. Our company manufactures stator rods using modern technologies, which guarantees trouble-free operation of electric motors at maximum loads. We enjoy a reputation of reliable partners, we help to carry out, repair of any electrical machines. The experts of our company quickly solve any task, using modern techniques and innovative equipment.

стержни обмотки статора
стержень обмотки
Стержни статора
стержни статорных обмоток

We supply stator winding rods


Our experts produce high quality components for rotating electrical machines of various types. Any advice can be obtained by phone or by leaving a request on the website. We make repair kits to facilitate installation. We cooperate with large enterprises, as well as small workshops. In order for the rods of the stator windings to serve as long as possible, special regulations must be strictly observed. Our specialists will leave for the installation supervision.
  • Check the sections before placing them in the grooves.
  • The ends of the bars are inspected prior to wrapping.
  • Checking the insulation resistance before and after installation.
  • The stator winding is tested after each phase.
  • The stator winding must be checked after replacing damaged rods.
  • Wedging of grooves after partial or complete replacement of bars.

With the help of our rods for stator winding of electric motors or generators, it is easy to restore the working capacity of rotating electric machines. We provide quick repair of rotating electric machines operating from direct or alternating current. The brand, year of manufacture, performance does not matter to us, we will quickly help restore the damaged electric motor to work.

Rem&Coil in numbers

100
certified employees
25 pcs
technical equipment for the manufacture of sections
200 000
sections per year
500
customers have made an order with us at least once
3000 pcs
engine base
in 40
countries around the world use our products

Technical capabilities

Total length of a formed bar: 5 000 mm Straight-line section length: 3 900 mm Bar cross section in the slotted area: 35,0х100,0 mm Indirect air or hydrogen cooling of a stator winding

  • Geometric parameters of the stator winding rods

  • Rated voltage, winding rod

  • Class of heat resistance of insulation, rods of stator windings

  • Variants of insulation of coils, winding rods

  • Electrical tests, stator winding rod

Range of bars manufactured at REM&COIL

Turns may be arranged in two ways: along either wide or narrow edge.
The structure is specified by EM (electric machine) design to comply with the required parameters.

Transposition of conductors in the straight-line section of a bar

Conductor strands of the bars are placed not in parallel but at an angle to the slot bottom. They are interlaced with each other so as to ensure that each conductor passing through a slot occupies all possible positions along the slot height alternately while all conductors remain in the same magnetic conditions. Such rearrangement of conductors is called transposition.

Several kinds of transposition exist: 180°, 360°, and 540°. At present, Robel transposition is widely adopted. In this configuration, each conductor is bent in certain areas in accordance with the transposition structure.

Materials used for the manufacture of winding rods

  • Winding wires:
  • Electrical insulation tapes for Resin Rich technology:
  • Electrical insulation tapes for VPI technology:
  • Protective tapes:
a. PSDK, PSDT, PSD-1, PSD – rectangular copper wire with insulation based on glass threads impregnated with specialized lacquers. Breakdown voltage up to 500V. Heat resistance class F(155°C), H(180°C).
a. Elmikaterm 524019 – mica tape consisting of PET film, mica paper, glass substrate. The mica content is not less than 40%. Heat resistance class F(155°C).

b. Elmikaterm 52409 is a mica tape consisting of mica paper, a glass substrate. The mica content is not less than 50%. Heat resistance class F(155°C).

c. Elmikaterm 529029 is a mica tape consisting of a polyimide film of mica paper, a glass substrate. The mica content is not less than 35%. Heat resistance class H(180°C).
a. Elmikapor 523119 is a mica tape consisting of a PET film of mica paper, a glass substrate. The mica content is not less than 60%. Heat resistance class F(155°C).

b. Elmikapor 523199 is a mica tape consisting of mica paper, a glass substrate. The mica content is not less than 50%. Heat resistance class F(155°C).

c. Elmikapor 53319 is a mica tape consisting of mica paper, a glass substrate. The mica content is not less than 80%. Heat resistance class F(155°C).
a. LES glass tape – designed to protect the housing insulation from mechanical influences.

b. Epoflex 219.61-10 – designed to protect the housing insulation from the negative effects of the environment. It is applied to the frontal parts of the coils.

c. Epoflex 324.03 – designed to protect the housing insulation from the negative effects of the environment. It is applied to the frontal parts of the coils.

d. LPP-400 – designed to protect the housing insulation from the effects of external partial discharges in the grooved parts.

e. EGSB 2969/2709 – designed to protect the hull insulation from the effects of external partial discharges in the frontal parts.

It is possible to use materials according to the customer's CD.
engine types

The most common engines

Laying

The bottom row bars are the first to be laid. Special attention is paid to attachment of the end turns, because severe electromagnetic loads are applied to them in the course of operation.

After the bottom bars are laid, the laying of the top layer is started.

When all bars are laid, leads are soldered. This is quite a labor-intensive and diligent operation due to a great number of conductors in each bar. After that, the soldered sites are insulated and covered with special caps that are also fixed securely.

If direct water cooling is applied, then tubes through which water enters the hollow conductors are connected.

Stages of production

1
3D modeling
2
Cutting and skinning of conductors
3
Forming, braiding of bars
4
Consolidation of conductors in the rectilinear part
5
Forming the bar
6
Application of case insulation
7
Pressing of case insulation
8
Electrical testing
9
Packaging

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