S11 Type 35kV/6-10kV Series Power Transformer

The S11 Type 35kV/6-10kV Series Power Transformer complies with the national standards GB 1094 Power Transformers and GB/T 6451 Technical Parameters and Requirements for Three-Phase Oil-Immersed Power Transformers. A series of major reforms in materials, processes, and structures have been adopted, bringing its electrical performance up to the advanced international level of similar products. Featuring high efficiency and low loss, it can save a significant amount of power consumption and operating costs, delivering remarkable social benefits. It is a new product promoted by the state and one of the most popular among users.

product details

Type & Meaning

S: Three-Phase Oil-Immersed Transformer
11: Performance Level Code
Box 1: Rated Capacity (kVA)
Box 2: Voltage Class (kV)

Applicable Standards

- GB1094.1~2-1996 Power Transformers
- GB1094.3,5-2003 Power Transformers
- GB/T6451-2008 Technical Parameters and Requirements for Three-Phase Oil-Immersed Power Transformers

product Display

SZ11 10kV Series Power Transformer right

Product Features

- The core is made of high-quality high-permeability silicon steel sheets with fully mitered step-lap joints, which reduces the core's no-load loss and no-load current.
- The high-voltage winding adopts a continuous type, and the low-voltage winding is either continuous or spiral. The ampere-turn distribution is balanced, and the mechanical strength is high. A new insulation structure is applied to the transformer body, enhancing the short-circuit withstand capability.
- The oil tank is of barrel or bell-jar type, with corrugated walls for an aesthetic and compact appearance as well as high mechanical strength. Precision-machined flanges are used for key connections to prevent leakage.

Technical Parameters

Technical Parameters of S11 Type 35kV Series Distribution Transformer

Rated Capacity (kVA)	Voltage Combination and Tap Range			Connection Symbol	Loss (kW)		Short-Circuit Impedance (%)	No-Load Current (%)	Weight (kg)		Overall Dimensions (mm)	Wheelbase (mm)
Rated Capacity (kVA)	High Voltage (kV)	Tap Changer (%)	Low Voltage (kV)	Connection Symbol	No-Load	Load	Short-Circuit Impedance (%)	No-Load Current (%)	Oil Weight	Total Weigh	Length (L)×Width (W)×Height(H)	Wheelbase (mm)
1000	35 38.5	±5 ±2×2.5	6.3 10.5	Yd11	1.44	12.15	6.5	1.0	1000	3800	2400×1650×2500	820×820
1250					1.76	14.67		0.9	1050	4100	2430×1730×2500	820×820
1600					2.12	17.55		0.8	1100	4700	2470×1750×2530	820×820
2000					2.72	19.35		0.7	1200	5300	2600×1900×2600	1070×1070
2500					3.2	20.7		0.6	1350	6200	2650×2100×2700	1070×1070
3150					3.8	24.3	7	0.56	1550	7100	2750×2100×2700	1070×1070
4000					4.52	28.8		0.56	1750	8650	2800×2350×2800	1070×1070
5000					5.4	33.03		0.48	1950	10000	2900×2500×2900	1070×1070
6300					6.56	36.9	7.5	0.48	2350	11700	3300×2400×3150	1070×1070
8000			6.3 10.5	YNd11	9	40.5		0.42	2500	14500	3750×3100×3300	1475×1475
10000					10.88	47.7		0.42	2850	16500	3400×3200×3400	1475×1475
12500					12.8	56.7	8	0.4	3300	18500	3700×3250×3580	1475×1475
16000					15.2	69.3		0.4	3800	23000	4000×3400×3700	1475×1475
20000					18	83.7		0.4	4500	27200	4120×3500×3850	1475×1475