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SC(B)13 (10 kV, 20 kV) Series Three-Phase Resin-Insulated Dry-Type Distribution Transformer

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Dry-type transformer series

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Product Description

　Product Overview
　　The SC(B)10‑13 series, rated at 20 kV, incorporates advanced foreign technologies. Its windings are cast in epoxy resin, providing flame retardancy, fire resistance, explosion protection, maintenance‑free operation, and zero environmental impact. With a compact footprint, it can be installed directly at the load center. A scientifically sound design and precise casting process ensure low partial discharge levels, low noise, and excellent heat dissipation. Equipped with an intelligent temperature controller and an RS‑485 serial interface for connection to a computer, it enables centralized monitoring and control. Thanks to these features, our dry‑type transformers are widely used in power transmission and distribution systems—such as hotels, airports, high‑rise buildings, commercial centers, and residential complexes—as well as in harsh environments like subways, metallurgical plants, power stations, ships, and offshore drilling platforms.
　　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 steel, and aluminum alloy—and comes in two configurations: forced‑draft and natural‑convection cooling. 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 Data Sheet for SC(B)13 Series 20 kV Three-Phase Resin-Insulated Dry-Type Distribution Transformers

Rated	Rated voltage		Connection	No-load current (%)	No-load loss (W)	Load Loss (W) (75°C)	Impedance Voltage (%)

Capacity			Group

(kVA)	High voltage (kV)	Low voltage (kV)
50	20	0.4	Yyn0	2	272	1110
80				2	368	1510
	±2×2.5%		Dyn11				6
						870
100				1.8	432	1790
125				1.8	472	1970
160				1.5	536	2220
200				1.5	584	2650
250				1.3	672	3080
315				1.3	776	3670
400				1.1	920	4360
500				1.1	1080	5210
630				1	1220	6160
800				1	1400	7430
1000				0.85	1660	8800
1250				0.85	1900	10400
1600				0.85	2230	12400
2000				0.7	2590	14700
2500				0.7	3100	17400
2000				0.7	2590	16000	8
2500				0.7	3100	19100	8