Dry-Type Transformer Series

A: Product Overview

SC(B)12 three-dimensional wound core dry-type transformer can be used as a replacement product for oil-immersed distribution transformers. It is one of the best-performing products among all types of dry-type transformers.It is especialy suitable for urban power grids and high-rise buildings., Business centers, theaters, hospitals, hotels,tunnels, subways, stations, docks, alrports, underground power stations, test rooms, combined substations and otherimportant places.

B: Model meaning

C: Producr Features

• Low loss: Because the three-dimensional wound core dy-type transformer has the characteristics of small jointless magneticesistance, the magnetic circuit at the corners and the direction of the silicon steel sheet are consistent, the winding tighty packedcoefficent is high, and the iron core is light in weight. Compared with the traditionallaminated core dry-type transformer, the no-loadloss Po can be reduced by 18%-28%. The no-load current lo drops by 50%-60%. The energy saving effect is remarkable, and theoperation is economical.
• Low noise: The noise levelof the three-dimensional wound core dry-type transformer is 5-10 decibels lower than that of the laminatedcore dry-type transformer. It is more than 15-20 decibels lower than the current professional standard JB/T10088-2016 “6-220kVtransformer noise”, which is a very ideal silent product.
• Low partial discharge: The resin mixture adopts foreign advanced mixing methods and vacuum fim degassing technologies to make themixture uniformly stirred and completely eliminate the bubbles in the mixture. The high and low pressure coils are cast under vacuunpressure. The resin insulation has Full encapsulation, there is also complete permeability between the layers. The partial discharge ofthe productis controlled below 5PC. The pouring body has a dense solidified structure, fame-retardant, explosion-proof, and does notpollute the environment.
• High mechanical strength: The three -dimensional rolled iron core adopts a round core section, which has better short-circuitresistance than long round section. The resin with fller makes the expansion coefficient difference in the casting body small, the curingshrinkage rate is small the internal stress is small, and the hardness of the cured product is high. Prefabricated reinforcing materialsare placed in the epoxy resin encapsulation layer on the iner and outer surfaces of the high and low voltage coils. It has a densestructure like reinforced concrete, so the mechanical strength is much greater than pure epoxy resin, so the product can withstandsudden short-circuit electromotive force without damage.

D: Technical Parameters

E: Core Worries of Global B-End Electrical Contractors & Project Purchasers

When purchasing 10kV three-dimensional wound core dry transformers for urban construction, industrial parks, underground substations and commercial complexes, buyers usually face 4 major procurement pain points:

• Unmatched voltage tap range cannot adapt to unstable grid voltage fluctuations in local areas;
• Unstandardized loss data leads to uncontrollable long-term power operation costs, unable to calculate investment recovery cycle;
• Unclassified short-circuit impedance will cause damage to supporting high-voltage switchgears during short-circuit faults;
• Incomplete full-capacity parameter sheets, which cannot quickly match the transformer capacity corresponding to actual load demand.

F: How This Official Parameter Table Solves Your Procurement Troubles

• Multi-type high voltage tap options adapt to various regional power gridsThis parameter sheet provides two adjustable tap modes: 5% and 2×2.5%, matching 10kV/6.3kV / 6kV high voltage and 0.4kV low voltage standard. It perfectly solves the problem ofunstable voltage in suburban, rural and factory power grids, without extra custom taptransformation cost.

• Complete standardized loss data to accurately calculate long-term operating expensesAll specifications from 250kVA to 2500kVA mark fixed no-load current, load loss and no-load lossvalues. Buyers can calculate annual power consumption loss according to the daily operation hoursof the factory, so as to accurately judge the overall cost recovery cycle of the SC(B)12-RL three-dimensional wound core dry transformer.

• Graded short-circuit impedance to realize safe matching with high-voltage cabinetsThe table clearly divides two standard impedance grades: 4.0% for 250kVA~25okVA capacity, 6.0%for 315kVA~2500kVA capacity. It can be perfectly matched with KYN28A-12 high voltageswitchgear, effectively buffer short-circuit surge current and avoid equipment breakdown caused byshort-circuit impact.

• Dual connection group design meets different national grid standardsTwo optional junction groups Dyn11 and YynO are listed in the table, which can adapt to the neutralgrounding requirements of different national 1okV power distribution systems, fully meeting thetender specification standards of municipal, hospital, subway and industrial projects all over theworld.

• Full capacity coverage to satisfy all types of engineering load demandsThe parameter sheet covers 250kVA small workshop power supply up to 2500kVA large industrialpark centralized power distribution. One table contains all mainstream capacity specifications of SC(B)12 three-dimensional wound core dry transformer, realizing fast model selection withoutrepeated inquiry.

G: Free One-stop Technical Support for Model Confirmation

If you cannot confirm the exact capacity, tap range or impedance grade for your 10kV distribution project, send us your local grid voltage standard, total factory load and supporting switchgear model. Our professional electrical engineer team will provide free customized SC(B)12-RL model selection drawing, IEC standard test report and formal quotation, with 12-month global factory after-sales warranty and remote online technical guidance.