2 October 2008 – Following successful final acceptance testing at the Siemens transformer factory in Nuremberg, the world’s first 800kV transformer for extra-high-voltage DC transmission systems (HVCD ...

The costliest piece of equipment in a substation is the Power Transformer. Therefore, a good maintenance program is required to keep these power transformers operating reliable. Over the past few ...

Every automated system that tests electronic circuit boards, modules, or equipment needs one or more DC power supplies. DC supplies provide power to the device under test as well as test stimulus. For ...

In power supplies, dc-dc converters and many other power electronics circuits, chokes and transformers form an essential part of the filter network that provides low-ripple dc power. In many designs, ...

Partial discharge in transformers can occur in gas bubbles or within oil and paper insulation, with PD activity potentially leading to insulation failure over time. On-site PD testing methods are ...