Electric Transformer Classification

1. By the number of phases:

1) Single-phase Transformer: Used for single-phase loads and a group of three-phase transformers.

2) Three-phase Transformer: Used for voltage stepping up or stepping down in three-phase systems.

2. By cooling method:

1) Dry-Type Transformer: Utilizes air convection for natural cooling or enhances with fan cooling, commonly used in high-rise buildings, toll stations, and for local lighting and electronic circuits, etc., with small capacity transformers.

2) Oil-Immersed Transformers: Utilizing oil as a cooling medium, such as oil-immersed natural cooling, oil-immersed air cooling, oil-immersed water cooling, and forced oil circulation, etc.

3. By application:

1) Power Transformers: Used for voltage step-up and step-down in power transmission and distribution systems.

2) Instrument Transformers: Such as voltage transformers, current transformers, used for measuring instruments and relay protection devices.

3) Test Transformer: Capable of generating high voltage for high-voltage testing of electrical equipment.

4) Special Transformers: Including electric furnace transformers, rectifier transformers, adjusting transformers, capacitor transformers, phase-shifting transformers, etc. The base track level error roller turns smoothly, and the roller brake is securely assembled.