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Three Phase Auto Transformer

Three Phase Auto Transformer

The three phase auto transformer is a combination of three single phase autotransformers. It has three windings, one per phase.
Using a rotary contact which moves over each winding, we can change the 3-phase output voltage. Thus it is possible to vary the three phase output with a single rotary knob. (See Fig. 1(a)). Fig. 1(b) shows the electrical connections of the three windings. One end of all the windings is connected together. The other ends are connected to the 3 phase ac supply (R, Y, B). The variable point of each winding is brought out as output (r, y, b points in Fig. 1(b)). The dotted line in Fig. 1(b) shows that all the rotary (sliding) contacts are mechanically coupled to each other so that only one controlling knob can control the output voltage. As we move the sliding contact on each winding, the voltage XV will change.
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Advantages of Three Phase Auto transformer

 

1.Reduction in the copper required.
2.The size and cost is reduced as compared to conventional transformer.
3.Losses in the windings reduce so efficiency is higher.
4.Better voltage regulation.
5.Variable output voltage.

 

Technical Specifications

 

Rated Voltage 10/0.4 kV (high and low voltage sides)
High-Voltage Side Rated Voltage 10kV or 12kV
Low-Voltage Side Rated Voltage 0.4kV
Frequency 50 Hz
Protection Grade IP3X
Noise Level ≤50 dB

 

15 kva 3 phase transformer
5kva transformer 3 phase
375 kva 3 phase transformer
45kva 3 phase transformer
step up transformer 3 phase
three phase to two phase conversion transformer

 

Product Qualification

 

product-600-849
product-600-849
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Our factory

 

Baoding Yuanchen Transformer Manufacturing Co., Ltd. (established in 1999) has a history of more than 20 years, covers an area of ​​98,000 square meters (building area of ​​26,800 square meters), and has comprehensive capabilities in R&D, production and service. It mainly sells nearly 100 products in six categories, including 35KV and below oil-immersed transformers, dry-type transformers, mobile box transformers, prepaid metering boxes, high and low voltage cabinets, charging piles, etc., with an annual production capacity of 5 million KVA. In October 2020, it obtained ISO 9001, ISO 14001, and ISO 45001 system certification. It is a high-tech enterprise (recognized in 2016, reviewed in 2019/2022), a specialized and innovative small and medium-sized enterprise in 2022, and its oil-immersed transformer was selected into the energy-saving recommendation catalog of the Ministry of Industry and Information Technology in 2022.

● Company Overview

product-800-531
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● Production Workshop

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product-800-533

 

Frequently Asked Questions (FAQ)

 

Q：What are our advantages?
A: 20 years of experience, advanced production equipment, stable quality, fast delivery, professional, and high-quality service.

Q： How are transformers transported?
A：Transformers are typically shipped overseas by ship, train, or truck. Samples are shipped in wooden boxes, while bulk shipments use containers.

Q： Do your transformers comply with industry standards and certifications?
A： Our transformer products comply with national and international standards, such as ISO 9001, CE certification, and CCC, ensuring product safety and reliability.

 

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