Manufacturing of coils, electromagnets, generators, and special motors including vacuum impregnation of electrical assemblies
Krämer Energietechnik GmbH & Co. KG
Zierenberg (DE)New on Amplifa
About Krämer Energietechnik
Krämer Energietechnik GmbH & Co. KG was founded in September 2010 as a spin-off from ThyssenKrupp Transrapid Manufacturing in Kassel and develops, manufactures, and qualifies electrical assemblies in Zierenberg (North Hesse). The range of services includes coil manufacturing from flat band, profiled wire, high-frequency wire, and superconductor tape on a edge-guided winding machine, as well as core manufacturing from electrical steel, and vacuum impregnation and vacuum potting with epoxy, PUR, and silicone on a system with clamping surfaces up to 800 × 1200 mm and mold weights up to 2500 kg. Additionally, the company offers electromagnet and magnet manufacturing, generator manufacturing and repair in the power range of 1 kW to 3 MW, special motor manufacturing (linear, torque, and stepper motors), electrical and electronic assembly, as well as mechanical assembly including adhesive and riveting technology. Customers include universities, research institutes, and industrial companies in wind and hydropower, e-mobility, and electrical engineering; together with the University of Kassel and Fraunhofer IWES, they have developed, among other things, a wastewater generator for sewage treatment plants. Prototypes, small and medium series are manufactured on approximately 1000 m² of manufacturing area, as well as spare parts for the Transrapid.
- Site
- Zierenberg
- Processes
- Coil manufacturing / Coil windings (flat band, profiled wire, HF wire, superconductor), Flat band winding on edge-guided winding machines, Vacuum potting of electrical components and assemblies, Vacuum impregnation of electrical assemblies, Core manufacturing from electrical steel, Manufacturing of inductive assemblies (winding of coils from high-frequency wire, assembly of coils, Electrical and electronic assembly, Magnet manufacturing (electric, permanent)
- Materials
- Aluminum, Copper, Superconductor, Ferrite, Electrical Steel, Epoxy (Potting/Impregnation Resin), PUR (Potting/Impregnation Resin), Silicone (Potting/Impregnation Resin)
- Certificates
- ISO 9001:2015 (Processes organized according to requirements; external, ISO 9001:2015 (Processes organized according to requirements)
- Founded
- 2010
- Industries
- Wind and Hydropower, E-Mobility, Electrical Engineering/Electronics, Universities and Research Institutes
- 01
Consulting on material selection and CAD fixture design
- 02
Core manufacturing from electrical steel
- 03
Coil manufacturing (flat band, profiled wire, HF wire, superconductor) on
- 04
Vacuum impregnation or vacuum potting with epoxy, PUR, or silicone
- 05
Electrical/electronic and mechanical assembly incl. adhesive and riveting
- 06
Test rig construction, assembly inspection, and 100% final inspection with test
Materials and Processes
Copper (Band, Flat, Round, and Profiled Wire)
Conductive material for coil windings and flat band coils, also processable as HF wire.
Aluminum Band
Conductor band for multi-layer flat band windings with an accuracy of 0.1 mm.
Superconductor Tape
For coil windings, possible through permanent band tension monitoring of the winding machine.
High Frequency Wire
Used for winding inductive coils up to 2000 mm in diameter.
Electrical Steel
Material for the core manufacturing of stators, electromagnets, and motor cores.
Ferrite
Installed with coils in inductive assemblies.
Epoxy (Potting/Impregnation Resin)
Resin system for vacuum potting and impregnation of electrical components and assemblies.
PUR (Potting/Impregnation Resin)
Resin system for insulation and protection of electrical assemblies.
Silicone (Potting/Impregnation Resin)
Elastic resin system for vacuum potting of electrical parts.
Location
Zierenberg
DEManufacturing and Administration
- Part weight / size
- Vacuum potting: clamping surface up to 800 × 1200 mm,
- Lot size
- Prototypes, small and medium series
- Materials
- Copper, aluminum band, superconductor tape, electrical steel, ferrite, epoxy, PUR, silicone
- Edge-guided winding machine (conductor band thickness 0.03–1.5 mm, band width max. 100 mm, coil diameter 50–2000 mm)
- Vacuum potting system (clamping surface up to 800 × 1200 mm, mold weights up to 2500 kg)
Components and Assemblies
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Coil manufacturing / Coil windings (flat band, profiled wire, HF wire, superconductor)Joining | Band winding accuracy 0.1 mm | – | – | Prototypes – Medium series | Aluminum, Copper, Superconductor |
| Flat band winding on edge-guided winding machinesJoining | Band winding accuracy 0.1 mm | – | – | – | Aluminum band, Copper band, Superconductor tape |
| Vacuum potting of electrical components and assembliesPlastic | – | 1200 mm × 800 mm | 2500 kg | – | Epoxy, PUR, Silicone |
| Vacuum impregnation of electrical assembliesSurface | – | – | – | – | Epoxy, PUR, Silicone |
| Core manufacturing from electrical steelForming | – | – | – | – | Electrical steel |
| Manufacturing of inductive assemblies (winding of coils from high-frequency wire, assembly of coilsAssembly | – | 2000 mm (coil diameter) | – | – | High-frequency wire, Ferrite |
| Electrical and electronic assemblyAssembly | – | – | – | – | – |
| Magnet manufacturing (electric, permanent)Assembly | – | – | – | – | – |
| Mechanical assembly incl. adhesive and riveting technologyAssembly | – | – | – | – | – |
| Generator manufacturing or repair (1 kW - 3 MW)Assembly | – | – | – | – | – |
| Special motor manufacturing (Linear, Torque, Stepper)Assembly | – | – | – | – | – |
| Test rig construction and assembly inspections / 100% final inspectionTesting | – | – | – | – | – |
| CAD fixture design and production-ready developmentEngineering | – | – | – | – | – |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Edge-guided winding machine | – | – | Conductor band thickness 0.03–1.5 mm; band width max. 100 mm; coil diameter 50–2000 mm | – | Zierenberg |
| Vacuum potting system | – | – | Clamping surface up to 800x1200 mm; mold weights up to 2500 kg | – | Zierenberg |
Additional services
Reference customers
Quality
All assemblies are delivered after 100% final inspection with test protocols; incoming inspection, batch traceability, in-process inspection, final inspection, and documentation are organized according to ISO 9001:2015 requirements. External certification can be carried out upon request; test rig construction and assembly inspections are also available.
| Evidence | Zierenberg |
|---|---|
| ISO 9001:2015 (Processes organized according to requirements) |
History
- 2010
Founding in September 2010 as a spin-off from ThyssenKrupp Transrapid Manufacturing in Kassel; new construction of approximately 1000 m² of manufacturing area in Zierenberg.