Development and manufacture of transformers, reactors, filters and inductive components up to 5 MVA and 10 t
ISMET GmbH (Produktmarke der REDUR GmbH & Co. KG)
Niederzier (DE) · Běhařovice (CZ) · Pune (IN)New on Amplifa
About ISMET
ISMET GmbH is a product brand of REDUR GmbH & Co. KG and develops and manufactures transformers, reactors, filters and other inductive components for industrial applications. The range extends from stock items for switchgear and control cabinet construction through customer-specifically optimized standard products to individually designed special transformers for melting furnaces, ionization systems or wind and solar energy. ISMET manufactures transformers up to 5 MVA, voltages up to 36 kV, currents up to 15,000 A and a total weight of up to 10 t; reactors are offered up to a total weight of 6 t. With a high level of in-house manufacturing depth, winding, core assembly, welding, soldering, impregnation, potting, assembly and 100% final inspection are all handled in-house – from one-off pieces to large series and up to complete cooled switchgear solutions. Customers include mechanical and plant engineering, drive and automation technology, rail infrastructure, power distribution, mining and crane technology. In addition to its headquarters in Niederzier, the brand manufactures at sites in the Czech Republic (ismet transformátory s.r.o.) and India (Phoenix Mecano India) and delivers worldwide.
- Site
- Niederzier
- Processes
- Transformer manufacturing (development and production of wound components), Reactor manufacturing, Filter manufacturing, Air coil winding (custom-made to drawing), Dip impregnation, Vacuum impregnation, Spray impregnation, Welding
- Materials
- Ferrite cores, Cut strip cores, Grain-oriented electrical steel, DIN cores, Wire winding (copper), Copper foil winding, Aluminium foil winding, Tube winding
- Certificates
- ISO 9001:2015, ISO 14001:2015
- Founded
- 1902
- Industries
- Mechanical engineering, Plant engineering, Drive technology, Automation technology, Wind and solar energy, Building services
- 01
Electrical and mechanical design (engineering)
- 02
Core assembly (core stack building)
- 03
Winding (wire, foil and tube winding)
- 04
Welding and soldering
- 05
Assembly
- 06
Impregnation (dip, vacuum or spray impregnation) or potting (casting resin)
- 07
100% final inspection
- 08
Documentation and delivery
Materials and Processes
Ferrite cores
Core material for reactors and transformers with special magnetic requirements.
Cut strip cores
Strip core material for high-performance inductive components with optimized magnetic properties.
Grain-oriented electrical steel
Electrical steel for transformer cores with low magnetization losses.
DIN cores
Standard-compliant core geometries for standard wound components.
Copper (wire and foil winding, high-frequency litz wire)
Winding material for transformers and reactors, also as high-frequency litz wire at high frequencies.
Aluminium (foil winding)
Alternative winding material for weight- and cost-optimized wound components.
Tube winding
Winding method for high-current applications with cooling channels.
Stainless steel (coil formers)
Coil former material for air coils in coating and magnetizing systems.
Casting resin (potting)
Potting material for cast-resin transformers with protection ratings up to IP67.
Nanocrystalline and amorphous materials
Alternative core materials for loss reduction and energy savings.
Dip, vacuum and spray impregnation
Insulation and impregnation processes for stable mechanical and electrical properties.
Locations
Niederzier
DEHeadquarters
- Materials
- Copper, aluminium, grain-oriented electrical steel, ferrite cores
- Winding
- Core stack building
- Welding
- Soldering
- Impregnation
- Final inspection
Běhařovice
CZManufacturing site (ismet transformátory s.r.o.)
- Materials
- Copper, aluminium, grain-oriented electrical steel
- Winding
- Assembly
- Impregnation
Pune
INManufacturing site (Phoenix Mecano India Private Limited)
Inductive Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Transformer manufacturing (development and production of wound components)Assembly | – | – | 10 t | One-off pieces – Large series | Copper, Aluminium, Grain-oriented electrical steel, Cut strip cores, Ferrite cores, DIN cores |
| Reactor manufacturingAssembly | – | – | 6 t | – | Copper, Aluminium, Ferrite cores, Cut strip cores |
| Filter manufacturingAssembly | – | – | – | – | – |
| Air coil winding (custom-made to drawing)Assembly | – | Diameter 1,800 mm | 2 t | – | Stainless steel |
| Dip impregnationSurface | – | – | – | – | – |
| Vacuum impregnationSurface | – | – | – | – | – |
| Spray impregnationSurface | – | – | – | – | – |
| WeldingJoining | – | – | – | – | – |
| SolderingJoining | – | – | – | – | – |
| WindingAssembly | – | – | – | – | Copper, Aluminium |
| Core stack building (core assembly)Assembly | – | – | – | – | – |
| Final inspection / 100% final inspectionTesting | – | – | – | – | – |
| Electrical and mechanical design / engineeringEngineering | – | – | – | – | – |
| Potting (cast-resin transformers / cast-resin transformers)Plastics | – | – | – | – | Casting resin |
Additional services
Quality
ISMET GmbH performs a 100% final inspection of all manufactured products and documents its quality policy in the quality management manual. The integrated management system meets the requirements of internationally recognized standards such as ISO 9001, ISO 14001, EN 15085 and RoHS.
| Evidence | Běhařovice |
|---|---|
| ISO 9001:2015 | |
| ISO 14001:2015 |
History
- 1902
Foundation of the ISMET brand on 02.05.1902
- 2022
ISMET is managed as a product brand of REDUR GmbH & Co. KG
- 2024
REDUR GmbH & Co. KG acquires TRAMAG Transformatorenfabrik GmbH & Co. KG as of 2 May 2024 in the context of an asset deal