The output configurations of transformers typically come in three common ways, namely:

Single-Phase Transformer Output Configurations:

Single-phase transformers usually have two windings, a primary winding, and a secondary winding. The primary winding is typically connected to the power source, while the secondary winding is connected to the load. The output configurations for single-phase transformers include:

The two terminals of a single-phase transformer (either the two terminals of the primary winding or the two terminals of the secondary winding) can be connected in parallel, forming a parallel output configuration.

The two terminals of a single-phase transformer can be connected in series, forming a series output configuration.

Three-Phase Transformer Output Configurations:

Three-phase transformers typically have three windings, labeled as A phase, B phase, and C phase. Their output configurations typically include:

Y connection (star connection): One terminal of each phase is connected together to form a star connection point, and the other terminal of each phase is connected to the power source or load. This connection method is also known as Y-Δ connection, where Δ represents a delta.

Δ connection (delta connection): Both terminals of each phase are connected in a series to form a delta connection. This connection method is also known as Δ-Y connection, where Y represents a star.

The choice of these output configurations depends on the requirements and applications of the electrical circuit. Star connections are typically used in distribution systems, while delta connections are used in specific power transmission and transformation applications. The output configuration of single-phase transformers can be selected as parallel or series as needed. Different output configurations affect the voltage transformation and phase relationships of the transformer.

LuShan, est. 1975,  is a Chinese professional manufacturer specializing in power transformers and reactors for 48 years. Leading products are single-phase transformer, three-phase transformers, DC inductors, AC reactors, filtering reactor, expoxy resin high-voltage transformer and intermediate, high-frequency products. Our transformers and reactors are widely used in 10 application areas: rapid transit, construction machinery, renewable energy, intelligent manufacturing, medical equipment, coal mine explosion prevention , excitation system, vacuum sintering, central air conditioning.

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