SC(B)11 Series Three-Phase Resin-Insulated Dry-Type Power Transformer

The SC(B)11 series epoxy‑cast, non‑excited voltage‑regulating dry‑type transformer is manufactured using a F‑class epoxy resin compound with fillers. After vacuum thin‑film degassing, the windings are cast in thin layers under vacuum and pressure, with both inner and outer surfaces reinforced by glass‑fiber‑reinforced forming meshes. This results in a dry‑type transformer boasting exceptionally high mechanical strength, electrical strength, and thermal resistance. It is an excellent solution for urban power‑grid upgrades and is particularly well suited for critical applications—such as high‑rise buildings, airports, power stations, and commercial centers—that demand fire‑proof, explosion‑proof, and moisture‑resistant performance.

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Dry-type transformer series

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Product Description

　　Overview

　　The SC(B)11 series epoxy‑cast, non‑excited voltage‑regulating dry‑type transformer is manufactured using a F‑class epoxy resin compound with fillers. After vacuum thin‑film degassing, the material is cast in thin layers under vacuum and pressure, with both inner and outer surfaces reinforced by glass‑fiber‑reinforced winding forms for the high‑ and low‑voltage windings. This transformer exhibits exceptionally high mechanical strength, electrical strength, and thermal resistance. It is an excellent solution for urban power‑grid upgrades and is particularly well suited for critical applications—such as high‑rise buildings, airports, power stations, and commercial centers—that demand fire‑proof, explosion‑proof, and moisture‑resistant performance.

　　Product Features

　　1. Flame-retardant, explosion-proof, pollution-free, maintenance-free, and capable of decentralized installation at the load center, thereby reducing capital investment and lowering costs.

　　2. Low losses and excellent energy-saving performance deliver significant operational cost savings.

　　3. Partial discharge level is less than 10 pC; the coil is non-hygroscopic and dust‑resistant, with high mechanical strength and excellent reliability, resulting in cost savings.

　　4. Excellent short-circuit resistance and superior lightning‑impulse withstand capability.

　　5. The enclosure is available in three materials—stainless steel, cold-rolled sheet, and aluminum alloy—and comes in two configurations: forced‑air cooling and natural heat dissipation. Cable entry and exit can be configured as top‑in/top‑out, bottom‑in/top‑out, or bottom‑in/bottom‑out.

　　6. The transformer can be equipped with a temperature control and display system upon customer request, and it can be used in conjunction with a temperature control system.

　　Ordering Instructions

　　When placing your order, please provide the following parameters:

　　1. Product Model

　　2. Rated Capacity

　　3. Voltage Combination

　　4. Scope of Adjustment

　　5. Frequency

　　6. Connection Group Designation

　　7. Short-circuit impedance

　　8. For products with special requirements, specify the technical specifications.

　　Technical Performance Parameters

Model number Model	Rated current Rated Current (A)	Voltage combination Voltage Combution		Group Association Connection symbol	No-load current No-load Current (%)	No-load loss No-loadLoos (W)	Load loss Load Loos(120℃) (w)	Impedance voltage Impedance Voltage UK(%)
Model number Model	Rated current Rated Current (A)	High pressure H.V.(KV)	Low pressure L.V.(KV)	Group Association Connection symbol	No-load current No-load Current (%)	No-load loss No-loadLoos (W)	Load loss Load Loos(120℃) (w)	Impedance voltage Impedance Voltage UK(%)
SC11-30	1.73 43.3	6± ±2x2.5% 6.3± ±2x2.5% 10± ±2x2.5% 10.5± ±2x2.5% 11± ±2x2.5%	0.4	Dyn11 YynO	2.5	168	710	4
SC11-50	1.73 43.3				2.2	238	1000
SC11-80	4.62 115.5				2.1	322	1380
SC11-100	5.77 144.3				1.9	350	1570
SC11-125	7.22 180.4				1.7	413	1850
SC11-160	7.22 180.4				1.7	476	2130
SC11-200	11.6 288.7				1.5	546	2530
SC11-250	14.43 360.8				1.5	630	2760
SC11-315	18.19 454.7				1.3	770	3470
SC(B)11-400	23.09 577.4				1.3	854	3990
SC(B)11-500	28.9 721.7				1.3	1015	4880
SC(B)11-630	36.4 909				1.2	1176	5880
SC(B)11-630	36.4 909				1.2	1134	5960	6
SC(B)11-800	46.2 1154.7				1.2	1330	6960
SC(B)11-1000	57.7 1443.4				1	1547	8130
SC(B)11-1250	72.2 1804.3				1	1827	9690
SC(B)11-1600	92.4 2309				1	2142	11730
SC(B)11-2000	115.5 2886.7				0.9	2905	14450
SC(B)11-2500	144.3 3608.4				0.9	3500	17170