Τι Είναι Οι Τύποι Του Μετασχηματιστές?

(1) δύναμη μετασχηματιστής
At present, representative products that have been in operation in the system include: 1150KV, 1200MV·A, 735-765KV, 800MV·A, 400-500KV, 3-phase 750MV·A or single-phase 550MV·A, 220KV, 3-phase 1300MV·A electric power Transformer; DC transmission ±500KV, 400MV·A converter transformer. Power transformers are mainly oil-immersed, and the product structure is divided into two types: core type and shell type. The production volume of core type accounts for 95 percent , and that of shell type only accounts for 5 percent . There is no overwhelming advantage between the core type and the shell type, but the core type process is relatively simple, so it is adopted by most enterprises; while the shell type structure and process are more complicated, only traditional factories use it. The shell type is especially suitable for high voltage and large capacity. It has advantages in insulation, machinery and heat dissipation, and is suitable for transportation of hydropower stations in mountainous areas.
(2) distribution transformer
The capacity of foreign distribution transformers can reach 2500KV·A, and there are circular and oval core forms. The circular ones account for the vast majority, and the elliptical ones can reduce the material consumption due to the small M0 (the distance between the iron core columns), and the corresponding coils are elliptical. low-voltage coils are wirewound and foil, and tanks are piped (few) and κυματοειδές ( περισσότερο).
(3) ξηρού τύπου μετασχηματιστής
Recently, dry-type transformers have developed rapidly in China. In big cities such as Beijing, Shanghai and Shenzhen, dry-type transformers have accounted for 50 percent , and in other large and medium-sized cities, they have also accounted for 20 percent . There are four structures of dry change: epoxy resin casting, filling casting, wrapping and impregnation. At present, open and ventilated H-class dry-type transformers are widely used in Europe and the United States. It is a new type of H-class dry transformer developed after absorbing the characteristics of the wrapped structure on the basis of the impregnated type and using Nomex paper. Due to the high price, it is not popular in my country. Not promoted yet. At present, the domestic dry-type distribution transformers with the largest short-circuit test capacity are 2500KV·A, 10/0.4KV; the dry-type power transformers with the largest short-circuit test capacity are 16000KV·A, 35/10KV.
(4) άμορφο κράμα μετασχηματιστής
Αν και άμορφο κράμα μετασχηματιστές έχουν φτωχό βραχυκύκλωμα αντίσταση και υψηλό θόρυβο, they are energy-saving, so the future development prospects are proελπιδοφόρα. at present, China's largest amorphous alloy transformer core manufacturer has an annual production capacity of 3,000-4,000 tons of iron cores. The production technology of iron cores and transformers is not the key factor restricting the promotion of άμορφο κράμα σίδηρος πυρήνας χρυσός μετασχηματιστές. Το ανακάλυψη του άμορφο κράμα ταινίες In παραγγελία για να προώθηση ένα άλμα in προϊόν ποιότητα.
(5) Wound core transformer
At present, the production of wound core transformers is mainly concentrated in the 10KV class, and the capacity is general less than 800KV·A, and 1600KV·A has also been trial-production, but most of the electric power departments purchase capacity below 315KV·A, which is suitable for rural power grids. There more than 200 wound core transformer manufacturing plants in China, 20 percent of which έχουν a βέβαιο κλίμακα. Η παραγωγή χωρητικότητα ισχυρό πηνίο πυρήνας μετασχηματιστές στην Κίνα είναι περίπου 16 εκατομμύρια KV % c2% b7A% 2c αλλά το πραγματικό έξοδος είναι σχετικά χαμηλό.