Engineering
Designed in-house
Our engineering team draws and calculates the element: 2D drawings, 3D models, surface load, wire and cold zones.
Co-design · engineering partnership
Designed around your appliance, with your engineers.
The right element for a new appliance is rarely in a catalogue. We develop it with the OEM that builds it in – with engineers who know what a surface load means for scale, cycle life and an approval test.
The sequence of stages is fixed; the depth of each stage scales with the project. A derivative of an existing VDE-approved family moves fast, a new sheath material or sealing concept gets the full programme.
- One responsible engineer as your technical contact through all six stages.
- Samples on series processes wherever possible – what you test is what you will receive.
- Documented gates: requirement sheet, approved drawing, test report, PPAP-style release.
Engineering partnership
Six stages
From first requirement to after-sales – six stages, one team.
Each stage ends with a documented result, so the next one starts from agreed facts rather than assumptions.
Concept
Medium, duty cycle, installation space, standard and markets become a requirement sheet and a first design.
Prototype
Functional samples typically 2–4 weeks after drawing approval; faster for derivatives of existing designs.
Validation
Electrical safety, life and humidity tests in our validation laboratory, then tests in your appliance.
Approval
Certification support: VDE-approved families as the basis, further marks obtained per project with you.
Series
PPAP-style sample approval, control plan, 100 % electrical test and lot traceability.
After sales
Field support, 8D failure analysis and engineering changes agreed in writing.
Inputs and outputs
What you provide, what we deliver.
Clear inputs at every stage keep a project moving – nobody waits for information the other side did not know was needed.
| Stage | You provide | We deliver | Gate |
|---|---|---|---|
| 1 · Concept | Appliance description and installation space (drawing or STEP file); rated voltage, power and tolerance; medium, temperatures and dry-run risk; target standard, markets, volumes and timeline | Feasibility statement, first material and design proposal, budget quotation, project plan | Requirement sheet agreed by both sides |
| 2 · Prototype | Review of our drawing – dimensions, terminals, mounting interface; sealing requirement; special test or marking requirements | 2D drawing with tolerances, 3D model on request; design summary of surface load, wire and cold zones; samples with a measurement report per piece | Approved drawing, samples delivered |
| 3 · Validation | Appliance-level test results; test units or fixtures if a test must run in your appliance | Laboratory report: dielectric strength, insulation resistance, leakage current, life and humidity tests as agreed | Written sample approval or change request |
| 4 · Approval | Required marks and target markets; your appliance approval schedule | Check whether the design is covered by an existing VDE approval or needs an extension; documentation and test data for the test house; RoHS and REACH declarations | Approval documentation complete |
| 5 · Series | Release of the initial sample report; forecast and call-off schedule; packaging and labelling specification | PPAP-style sample documentation, control plan, capability studies, capacity plan for the ramp-up | Series release |
| 6 · After sales | Field returns and appliance data; change requests | Failure analysis with 8D reports; change notices assessed for their effect on approvals and agreed before implementation | Stable supply over the platform life |
Why it is fast
Fast, because the critical steps are in our plant.
Engineering, sheath tube, forming tools and laboratory are under one roof, so most prototypes are built without waiting for outside suppliers.
Tube
Sheath tube from our own mill
Stainless tube is roll-formed, TIG-welded and sized in our plant, so samples use the same tube as the series.
Tools
Tools and fixtures on site
A large base of running parts means most new forms can be bent on tools and fixtures we already have.
Laboratory
Tested before shipment
Samples pass our validation laboratory before they are sent to you – with a report for every agreed test.
Timing: functional samples typically take 2–4 weeks from drawing approval when existing tooling and standard fittings can be used. New bending tools, special flanges or a new sealing configuration take longer – the quotation states the date.
One team
Four disciplines at one table.
Application engineering, our engineering team, the validation laboratory and production planning work on your project together – so the design you approve can be built and tested in series.
- Application engineering owns the requirement sheet and the open-points list until release.
- Engineering team: thermal and electrical design, drawings, 3D models and the construction file for approvals.
- Validation laboratory: sample tests and reports, support for type tests and customer audits.
- Production planning: tooling, control plan, capacity and ramp-up.
After release the same team stays responsible. Every change to a released drawing, material or process – including changes we initiate – is assessed for its effect on approvals and agreed with you in writing first.
Design review
Design with our technologies
Build these into the element from the start.
STF terminal sealingMoisture-tight terminal ends
Nickel diffusion coatingCorrosion and scale protection
Bright annealingDuctile, oxide-free sheath
Energy efficiencyDesign levers that cut appliance losses
Customised productionSpecial shapes and small series
Quality & laboratoryWhat we test, and how often
Starting a new platform or replacing a part?
Send the requirement, the installation space or the current part. The responsible engineer answers as soon as the technical details are clear – with questions, a first proposal and a project plan.