English

Auto-Transformers

Auto-Transformers

A.  Overview
Structurally, it is a transformer in which a common winding is connected in series with another winding and is not isolated from the grid.

B.  FEATURES
The auto transformer has the advantages of simple structure, high power efficiency, small work loss, small Small voltage drop, small size, and the transformer installation space can be designed according to requirements, and has good cost performance.

C.  Design Considerations
1.  High work efficiency
2.  Small voltage drop
3.  Voltage and number of turns match
4.  Low vibration and noise
5.  Power 10VA to 30KVA

D.  Temperature resistance and product temperature rise
Typically we design that over ambient of 25°C, product temperature rise is as follows:
1.  Class A: 105°C, Temperature rise below 60°C
2.  Class B 130°C, Temperature rise below 75°C
3.  Class F 155°C, Temperature rise below 95°C
4.  Class H 180°C, Temperature rise below 125°C
5.  Or suitable temperature grade and suitable temperature rise

E.  Design required parameters
1.  Input voltage (V)
2.  Working frequency (Hz)
3.  Output voltage (V)
4.  Output current (A) or output power (W)
6.  Transformer installation space
7.  Transformer installation and connection method
8.  Requirements of temperature resistance level, efficiency, power consumption

  • CE ROHS Approved Customized Auto Transformer

    CE ROHS Approved Customized Auto Transformer

    Auto Transformer Features: The primary and secondary of the toroidal autotransformer share one coil, and the input and output have at least one common cable. Auto Transformer Advantages: For transformers of the same power, the auto-transformer has the advantages of larger capacity, smaller loss, smaller size and convenient transportation and installation. In addition, the cost of the auto-transformer is also lower.

  • Single Phase Auto Toroidal Transformer

    Single Phase Auto Toroidal Transformer

    1) less material consumption and low cost. 2) low loss and high efficiency. 3) smaller size for easy transportation and installation. 4) the limit manufacturing capacity of transformer is improved.

  • Single Phase Toroidal Auto Encapsulated Transformer

    Single Phase Toroidal Auto Encapsulated Transformer

    Auto Transformer Features: The primary and secondary of the ring autotransformer share one coil, and the input and output have at least one common cable. Auto Transformer Advantages: For transformers of the same power, the auto-transformer has the advantages of larger capacity, smaller loss, smaller size and convenient transportation and installation. In addition, the cost of the auto-transformer is also lower.

  • CE Auto Toroidal Transformer

    CE Auto Toroidal Transformer

    Toroidal auto Transformer Features: The primary and secondary of the toroidal auto transformer share one coil, and the input and output have at least one common cable. Toroidal auto Transformer Advantages: For toroidal transformers of the same power, the auto-transformer has the advantages of larger capacity, smaller loss, smaller size and convenient transportation and installation. In addition, the cost of the auto-transformer is also lower.