Product Description
Auto transformer is a kind of specail transformer, of which primary and secondary winding are the same and without insulation. According to the structure, it can also be subdivided into voltage changable type and fixed type.
Product features
1.Since the calculated capacity of the autotransformer is less than the rated capacity, the main dimensions of the autotransformer are smaller under the same rated capacity, and the effective materials (silicon steel sheet and conductor) and structural materials (steel) are reduced accordingly, thus reducing the cost. The reduction of effective materials makes the copper loss and iron loss decrease correspondingly, so the efficiency of autotransformer is high. At the same time, due to the reduction of the main size and the mass, it is possible to manufacture a single transformer with larger capacity under the allowable transportation conditions. However, the above advantages are usually obvious only when k ≤ 2.
2.Since the short-circuit impedance of autotransformer is smaller than that of double winding transformer, the voltage change is smaller, but the short-circuit current is larger
3.Due to the direct connection between the primary and secondary of the autotransformer, when the high-voltage side overvoltage occurs, it will cause serious overvoltage on the low-voltage side. In order to avoid this danger, both primary and secondary windings must be installed with lightning arresters.
4.Autotransformer is mostly used as motor step-down starting under low voltage.
Products specification
Rated Capacity:400KVA
Rated voltage ratio: 10kV / 0.4kV
Impedance voltage: 4%
No load loss: 570w
Load loss: 4300w
Oil weight: 180kg
Body lifting weight: 580kg
Total weight: 920kg
Dimensions (L*W*H):1200*600*1200
FAQ
Q: Are you a Manufacturer, factory or Trading company?
A: Yes, we are professional manufacrurer of transformer established on 1996. Welcome to visit our factory in the near future!
Q: What's your warranty terms?
A: We offer 12 months warranty time for the transformer quality. For any questions about our products, you can consult our sales manager any time and anywhere. We will provide the professional assistance to you.
Q: How long is the production time?
A: My friends, when you confirm the order, there will be about 25 to 45 days to produce which depends on your delivery plan and our order arrangements.
Q: What's your payment terms?
A: T/T, L/C or negotiation.
Q: How do you conduct quality control in your factory?
A: Hero transformers are manufactured in accordance with international standards (such as IEC, SGS, Intertek, CCC, CE and other international certifications) and customer requirements . All transformers are 100% conducted routine test, type test and special test before delivery to ensure every product is qualified.
Q: Do you have the products in stock?
A: Normally No, but we have raw material stock to shorten production lead time.
Q: How can I trust you?
A: Liaocheng Huarui Electric Co., Ltd has more than 28 years manufacturing and R&D experience, and cooperated with many customers all over the world. We have many patent certificates, test report, ISO9001, ISO14000 certificate. We are the audited supplier of Made-In-China.
Q: Can you provide customized transformer?
A: Yes, Of cource. Please tell our salers your detailed requirements with specifications, technical drawing and other parameters.
Q: Could I have your catalog and price list?
A: Price may change based on material market. Welcome to contact for accurate price via Made-in-China or company official website.
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