S11 Series 35 kV Class Double-Winding No-Excitation Voltage-Regulating Distribution Transformer

This product complies with the national standards GB 1094 “Power Transformers” and GB 6451 “Technical Parameters and Requirements for Three‑Phase Oil‑Immersed Power Transformers.” It is primarily used in power system substations and 35 kV user‑side substations. Leveraging cutting‑edge domestic research achievements, the product features a novel design, low losses, compact dimensions, and strong short‑circuit withstand capability, among other advantages.

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Oil-Immersed Power Transformer Series

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Product Description

　　Overview

　　This product complies with the national standards GB 1094, “Power Transformers,” and GB 6451, “Technical Parameters and Requirements for Three‑Phase Oil‑Immersed Power Transformers.” It is primarily used in power system substations and 35 kV user substations. Incorporating cutting‑edge domestic research achievements, the product features a novel design, low losses, compact dimensions, and strong short‑circuit withstand capability, among other advantages.

　　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

Rated Capacity (kVA)	Rated voltage (kV)			Connection Group	No-load Current (%)	Loss (W)		Impedance Voltage (%)	Reference external dimensions (mm)			Reference weight (kg)			Track gauge Width × Height (mm)
Rated Capacity (kVA)	High pressure	Tap	Low pressure	Connection Group	No-load Current (%)	No-load	Load	Impedance Voltage (%)	long	wide	High	Body of the vessel	Heavy oil	Total weight	Track gauge Width × Height (mm)
50	35	±5% or ±2×2.5%	0.4	Dyn11	1.3	160	1200	6.5	1195	895	1825	300	330	860	660×660
100					1.1	230	2010		1200	935	1935	470	385	1130	660×660
125					1.1	270	2370		1235	940	1955	550	465	1335	660×660
160					1.0	280	2820		1285	995	1960	580	485	1475	660×660
200					1.0	340	3320		1310	1090	1985	680	595	1755	660×660
250					0.95	400	3950		1450	1150	2010	860	650	2000	660×660
315					0.95	480	4750		1930	1155	2020	980	765	2290	820×820
400					0.85	580	5740		1850	1065	2115	1170	885	2725	820×820
500					0.85	680	6910		2040	1205	2415	1340	960	3090	820×820
630					0.65	830	7860		2140	1240	2515	1550	895	2815	820×820
800					0.65	980	9400		2305	1540	2685	1990	1030	4510	820×820
1000					0.65	1150	11500		2545	1590	2590	2280	1305	4920	820×820
1250					0.6	1400	13900		2495	1615	2675	2415	1475	5055	820×820
1600					0.8	1690	16600		2680	2010	2970	2600	1490	5450	820×820
2000					0.55	1990	19700		2750	2310	2800	2680	1280	5500	1070×1070
2500					0.55	2360	23200		2820	2530	2850	3650	1500	6610	1070×1070
630	35 or 38.5	±5% or ±2 ×2.5%	3.15 33 6 6.3 10 10.5 11	Yd11 YNd11	0.65	830	7860	6.5	2140	1050	2220	1580	925	3275	820×820
800					0.65	980	9400		2275	1330	2400	1870	1115	4085	820×820
1000					0.65	1150	11500		2450	1670	2470	1805	970	3705	820×820
1250					0.55	1400	13900		2565	1770	2615	2020	1010	4030	820×820
1600					0.45	1690	16600		2680	1780	2685	2365	1090	4545	820×820
2000					0.45	2170	18300		2800	1890	2755	2745	1200	5215	1070×1070
2500					0.45	2560	19600		2830	1980	2820	3320	1330	6080	1070×1070
3150					0.45	3040	23000	7.0	2850	2165	2960	3850	1520	7050	1070×1070
4000					0.45	3610	27300		2855	2250	3100	4600	1750	8490	1070×1070
5000					0.45	4320	31300		3000	2365	3155	5525	1950	8975	1070×1070
6300					0.45	5240	35000	8.0	3075	2530	3250	6770	2320	11490	1475×1475
8000					0.35	7200	38400		3130	2645	3710	8093	2500	14120	1475×1475
10000					0.35	8700	45300		3565	2750	3830	6983	2850	16480	1475×1475
12500					0.3	10000	53800		4150	2785	3950	10932	3250	18345	1475×1475
16000					0.3	12100	65800		4480	2860	4720	13330	3750	22307	1475×1475
20000					0.3	14400	79500		4560	3225	4865	17035	4365	29975	1475×1475
25000					0.25	17000	94000	10	4610	3490	4910	21310	5280	35370	1475×1475
31500					0.25	20200	112000	10	4760	3750	5100	25310	6650	29800	1475×1475