Hot impregnation technology for electrical engineering
Hot impregnation systems for manufacturers and repair shops
We have been developing innovative hot impregnation technologies for the impregnation of stator coils for electric motors - We can offer you the optimum concept with regard to the following:
- Available setup area
- Condition of the coils that are to be impregnated
- Output in accordance with requirements
- Required level of automation
- Choice of impregnation materials
- Required quality of impregnation
Our hot impregnation systems are not standard systems, to which our customers must adapt themselves.
Impregnation systems |
Our product portfolio includes Joule heat systems based on the principle of the:
- Resistance heating – The stator coils are contacted and heated via low frequency direct current, if required.
- Induction heating – The stator coils must not be contacted, the laminated core is rapidly heated up inductively and the slot and coil are tempered as a result of the thermal conduction.
The pre-heating of the stators and the curing of the resin can be combined using various active principles. Exposure to infrared or UV light as well as convection oven lines are combined to suit specific application.
Conventional continuous or clocked impregnation systems without Joule heat, with tempering exclusively using convection in the furnace, can also be found in our product range.
In the Meyer Group of Companies, furnace engineering is handled by our sister company Airtec GmbH. The furnaces can optionally be designed with various heating concepts: electric, gas or oil-fired.
System output/service:
Trials are generally carried out in our well equipped technical cen
ter prior to awarding contracts. This gives you the certainty with regard to the achievable minimum clock pulses and the maximum quality of the impregnation, which is the result of your stators, our system technology and the resins which are the focal point.
Our Engineering department will prepare 3D production planning layouts or animations for you for presentation purposes. All the systems are completely assembled in our fabrication areas and are thoroughly tested and accepted in advance under production conditions with the respective impregnation medium and a wide range of stator types. Following the installation and successful commissioning at the customer site, we are of the opinion that providing first class service and comprehensive advice is a matter of course.
Joule Heat Impregnation Systems Resistance Heating
Our hot impregnation systems in the resistance heating sector are based on the principle of low frequency heating – a decisive advance over normal systems using direct current heating. We can heat up the three phases of a stator very homogenously and quickly with low current density.
More than 2.000 stators can be impregnated daily with our latest concept; this represents an increase in productivity of around 30 percent over normal systems!
The resin system made of stainless steel and with fi ttings made of PTFE makes it possible to use both modern resins without monomers and media containing solvents.
We use air tubes and machine lacquer with a high level of acrylate resistance.
A highly efficient exhaust concept with a mechanical and electrostatic aerosol separator is utilized. As a result, emissions are effectively extracted where they develop. The bonding is largely kept away from coatings this way, in order to be able to guarantee temperature control over a long period of time in the stators that are to be impregnated. Operator and maintenance-friendly concepts are firmly implemented in every aspect.
The features of the process monitoring during all the phases of stator processing contribute towards safe guarding and documenting their quality standard.
Joule Heat Impregnation Systems Induction Heating
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In the induction heating sector, our hot impregnation systems offer the following advantages:
- No contacting is needed in the winding terminations.
- The machining profi les only relate to a few different stator geometries and not to thousands of different coil calculations.
- Optimum resin absorption in the slot and especially between the slot lining and the laminated core for the best heat dissipation.
- The required footprint is very small.
- The resin absorption is comparable with the level for resistance heating and is also very easy to control or reproduce.
This process has the charm of a “One Peace Flow“-fabrication with minimum pulse and through put times and therefore it can be ideally integrated in the overall process fl ow for stator fabrication. The maintenance work and the maintenance costs for a hot dipped impregnation system are very low. The operation is so simple that no expert staff is needed to operate it.
Your partners for all your questions about hot impregnation technology:
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Dipl.-Ing. |
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Herbert Lück Phone: +49(0) 28 71 / 219 27-0 |
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Sigrid Look Phone: +49(0) 28 71 / 219 27-43 |
