Dry-type transformer
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Why are dry-type transformers mostly equipped with a D/Y11 wiring configuration? Can the Y/Y0-11 or Y/Y0-12 wiring configuration be used?
We will use the Y/Y0-12 wiring method
Isn’t it true that the D/Y11 wiring method has a strong ability to suppress harmonics? Is this based on that consideration?
It’s due to system issues and design requirements; there’s no other reason. Focusing solely on the ability to suppress harmonics ignores other parameters
Our company suffered as a result of this; the design institute specified D/Y11 as the required wiring configuration. The person responsible for signing the technical agreement believed what the manufacturer said, that transformers with low power ratings using the D/Y11 wiring method were no longer produced, so the configuration was changed to Y/Yn0 in the agreement. As a result, the client refused to accept the goods, and it took a lot of effort to resolve the situation. Fortunately, since it’s a high-voltage cabinet, we’ve included just one transformer. The manufacturer said that as long as no other transformers are connected in parallel at the same voltage level, the Y/Yn0 wiring configuration will be fine.