Test Platform

Test Platform: Ensuring the Reliability of Every Transformer

A platform at the heart of the manufacturing process

With a dedicated team of three people and acting as the true “control tower” of the workshop, the test platform is involved from the very beginning of the transformer manufacturing process. Our test technicians monitor the quality and compliance of the windings against the design specifications provided by the engineering department, and then throughout the various stages of production up to the final acceptance of the equipment, often carried out in the presence of the customer during the Factory Acceptance Tests (FAT).

Routine tests performed on 100% of transformers

Every transformer manufactured undergoes a complete series of routine tests carried out entirely in-house before shipment. These systematic inspections ensure that the equipment complies with the technical specifications defined by the engineering department as well as with applicable industry standards.

The test platform teams verify, among other things, the electrical characteristics, insulation quality, proper operation of the various components, and the overall performance of the transformer. Performed at every key stage of the manufacturing process and during final testing, these inspections guarantee the quality, reliability, and safety of the equipment before commissioning at the customer’s site.

Type tests and special tests: advanced inspections

In addition to routine tests, type tests may be carried out on the first transformer of a series of identical units, known as the “prototype unit” or “first-off unit.” These tests validate the behavior and performance of the product under more demanding operating conditions. They include lightning impulse tests to verify the transformer’s ability to withstand transient overvoltages, temperature rise tests to assess thermal performance, and acoustic measurements to evaluate operational noise levels.

The platform also performs special tests designed to meet specific requirements or customer requests. These advanced inspections include winding capacitance measurements, Sweep Frequency Response Analysis (SFRA) to detect potential internal mechanical deformations, short-circuit withstand tests, partial discharge measurements, dissolved gas analysis, and tan delta measurements used to assess the quality of the insulation system.

Thanks to these testing and diagnostic capabilities, celduc ensures that its transformers meet the highest standards in terms of performance, safety, and reliability.

2025: new equipment to strengthen testing capabilities

In 2025, celduc continued to develop its testing platform through significant investment in new state-of-the-art testing and diagnostic equipment. The workshop was notably equipped with a Testrano system enabling the automation and centralization of electrical testing, partial discharge measurement equipment capable of detecting insulation defects at a very early stage, a lightning impulse generator designed to validate transformer resistance to transient overvoltages, and a dielectric analyzer for detailed insulation characteristic analysis.

These new testing resources further enhance the reliability of in-house inspections, improve diagnostic accuracy, and enable us to provide our customers with an even higher level of quality and compliance.