delta connection

from The Century Dictionary.

• See polyphase, deltoid moth, *purpurin.

from the GNU version of the Collaborative International Dictionary of English.

• (Elec.) One of the usual forms or methods for connecting apparatus to a three-phase circuit, the three corners of the delta or triangle, as diagrammatically represented, being connected to the three wires of the supply circuit.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun electricity A type of three-phase connection.