Subscribe options

Select your newsletters:

Please enter your email address:

@

News & Media

Latest ITER Newsline

  • Cryolines | Another day, another spool

    Having wedged his body and equipment into the cramped space between the ceiling and the massive pipe, a worker is busy welding two cryolines spools. A few metre [...]

    Read more

  • Image of the week | Bearings unveiled

    The construction teams are in the last stages of preparing the Tokamak pit for the first major operation of ITER machine assembly: the lowering of the cryostat [...]

    Read more

  • Technology | Perfecting tritium breeding for DEMO and beyond

    While ITER will never breed tritium for its own consumption, it will test breeding blanket concepts—the tools and techniques that designers of future DEMO react [...]

    Read more

  • Fusion world | Japan and Europe complete the assembly of JT-60SA

    The JT-60SA fusion experiment in Naka, Japan, is designed to explore advanced plasma physics in support of the operation of ITER and next-phase devices. After s [...]

    Read more

  • Manufacturing | Thermal shield milestone in Korea

    Six years after the start of fabrication, Korean contractor SFA has completed the last 40° sector of vacuum vessel thermal shield. The stainless steel panels, c [...]

    Read more

Of Interest

See archived entries

Transformer reliability demonstrated in China

ITER China

The latest tests demonstrate high reliability and strong short circuit withstand capability. (Pictured: the transformer outside the tank for inspection.) (Click to view larger version...)
The latest tests demonstrate high reliability and strong short circuit withstand capability. (Pictured: the transformer outside the tank for inspection.)
Qualification activities for the ITER poloidal field converter package are continuing in China where—in the latest round of successful testing—the prototype of the poloidal field rectifier transformer successfully passed the third phase of routing and type tests.

From 25-28 February the rectifier transformer prototype fabricated by the Xi'an Transformer Co. Ltd (China XD Group) underwent testing in the presence of representatives from the ITER Organization, the Chinese Domestic Agency, the Institute of Plasma Physics at the Chinese Academy of Sciences (ASIPP), and XD in Xi'an. The positive results of this visual examination, following on the heels of recent successful short circuit tests, confirm the suitability of R&D carried out for the poloidal field rectifier transformer prototype.

The rectifier transformer is one of the key prototype components of the ITER poloidal field converter package. With the assistance of ASIPP, ITER China issued the technical requirements for the fabrication and testing of the prototype according to the Procurement Arrangement signed with the ITER Organization in August 2012, and subsequently awarded the contract to the XD Group in December 2012.

The supplier accomplished two procurement milestones in 2013—completing the manufacturing design review in April followed by the fabrication of the prototype—before fulfilling all required tests.

The capability for the large transformer to withstand short circuit current is essential to guaranteeing reliability under the harsh operating conditions of ITER; short circuit test statistics over the past decade have tended to show a very high failure rate (nearly 30 percent). As a key component of the ITER coil power supply system, the test was carried out in full compliance with the latest IEC standards. Several peak current impulses up to 350kA were applied to the transformer and the evolution of winding parameters measured between each current application.


return to the latest published articles