Talk:Key:transformer

Pole attached transformers

Would it not be more appropriate to call the transformers attached to poles for minor_distribution? This would make it fall in line with substation=minor_distribution. Gazer75 (talk) 20:37, 7 March 2019 (UTC)

Hi Gazer, that's right.

This is the point of an upcoming proposal I need to commit on. Fanfouer (talk) 20:48, 7 March 2019 (UTC)

Compensation transformers

SVCs, STATCOMs and synchronous condensers operate at much lower voltage, typically 5-10kV, so they usually have a transformer in front.
The synchronous condenser will also have a "small" rectifier/inverter between it and the transformer because it is a DC device.
Would it not be an idea to add transformer=compensation as a function? Gazer75 (talk) 08:56, 28 June 2019 (UTC)

It would be ok to do so, if and only if the transformer is appart from the converter device. If not, the transformer is inside the converter and voltage=* on power=converter will correspond to primary voltage of the front transformer. Fanfouer (talk) 11:37, 6 July 2019 (UTC)

Here is a very clear example of transformer outside fenced off area of an SVC at Sogndal substation. Typical for both SVC and STATCOM in Norway at least. Gazer75 (talk) 20:24, 24 June 2022 (UTC)

Isolation transformer

We are missing isolation transformers. These are usually just 1:1 separating the grid. Technically most transformers do this, except auto-transformers, but these are only there for this purpose and do not alter voltage. Gazer75 (talk) 07:21, 27 July 2023 (UTC)

Hi, good to know about them. I wonder if we should add transformer=isolation, incompatible with windings:auto=yes and linked to galvanic isolation.

Or define windings:isolated=yes to state a transformer has got isolated windings whatever its purpose can be. Fanfouer (talk) 17:03, 27 July 2023 (UTC)

Current and Potential(Voltage) transformers

Would probably be beneficial to add these as values as well. Transformer=current and either potential or voltage as value for the other. These smaller devices are quite common in substations for monitoring current and voltage by stepping it down to a more manageable value before measurement. Visually they look similar, but you can tell them apart by the fact that current transformers will have cables running through them at the top (unlike a circuit breaker), while at a voltage transformer cable ends. Gazer75 (talk) 05:36, 23 January 2024 (UTC)