Quality assurance in transformer manufacturing encompasses all the measures that ensure the product meets the highest standards, from incoming goods to final delivery. Only through seamless quality assurance does a service life of 40 years or more become realistic. Quality assurance begins with material procurement and ends with commissioning – it runs like a common thread through every manufacturing and testing step.
What tests are carried out as part of quality assurance?
As standard, routine tests are carried out on every individual transformer: turns ratio, winding resistances, no-load and load losses, withstand voltage test, and partial discharge measurement. In addition, type tests such as impulse voltage tests, temperature-rise tests, and short-circuit tests are performed – the latter often at accredited external high-power laboratories.
Key Characteristics at a Glance
- Incoming inspection of all materials (steel laminations, wires, oils)
- Routine testing according to IEC 60076 for every transformer
- Type tests to verify the design
- Documentation in a tamper-proof test report
- Certifications according to ISO 9001, ISO 14001, and ISO 45001
- Statistical process control for early defect detection
- Traceability of all components used
Frequently Asked Questions
What is partial discharge measurement and why is it important?
Partial discharges are small, localized electrical discharges within the insulation system that indicate weak points. Measuring them reveals potential problems at an early stage and is a prerequisite for a long, trouble-free service life.
What role does ISO 9001 certification play?
ISO 9001 demonstrates that a company has established a systematic quality management system. For customers, this is an important indicator of traceable processes, regular audits, and continuous improvement – particularly important for long-term supply contracts.
What advantages does complete traceability offer?
In the event of a service issue, the exact materials, suppliers, and manufacturing steps used can be traced precisely. In the case of complaints, causes can be identified quickly, and subsequent units with identical weak points can be checked at an early stage – a huge advantage for long-term plant safety.
What role do the FAT (Factory Acceptance Test) and SAT (Site Acceptance Test) play?
The FAT takes place at the factory: the customer accepts the finished product under realistic conditions. During the SAT, the installation is tested again after being set up at the site of use. Both tests are important milestones that reveal any problems at an early stage and allow them to be resolved before commissioning.
If you value the highest manufacturing quality and well-thought-out testing processes, you’ve come to the right place. Talk to us about your project – we look forward to the exchange.