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S11 Series 10kV-35kV Non-excitation Voltage Regulating Transformer

Triphase HV 35kV Power System Oil Immersed Transformer

S11 Series 10kV-35kV Non-excitation Voltage Regulating Transformer

The S11 series 10kV-35kV non-excitation voltage regulating transformer offers a reliable and efficient solution for power distribution, featuring low losses, low noise, and high short-circuit resistance. It is designed for high performance in harsh environments and offers enhanced safety and versatility for a wide range of applications


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Overview

The S11 series 10kV-35kV non-excitation voltage regulating transformer is designed for efficient and reliable power distribution in medium to high-voltage applications. It features advanced insulation materials and construction technology, ensuring low noise, low losses, and high short-circuit resistance

Key Features

Low Losses: No-load losses are significantly lower than national standards, contributing to energy savings
Low Noise: Noise levels are lower than traditional transformers, often below 60dB
High Reliability: Features a fully sealed design to prevent moisture ingress and oil leakage 。
Strong Short-Circuit Resistance: Successfully passes national-level short-circuit tests
Maintenance-Free Design: Sealing components have the same lifespan as the transformer, reducing maintenance needs

Technical Parameters

Rated Voltage: 10kV to 35kV
Rated Capacity: Up to 31500kV
Connection Group: YNd11 or Yd11
Protection Level: IP2X

Applications
Ideal for power distribution in urban power grids, industrial plants, commercial buildings, and public infrastructure projects

Key Benefits

Enhanced safety and reliability with minimal maintenance
Compact and space-efficient design
Suitable for harsh environments and high load conditions
Long service life and reduced operational costs

S11 Series 20kV Off-Excitation Voltage Regulating Transformer Technical Data Sheet

Rated capacity(kVA)	Voltage Combined			Vector-group	No-load loss(W)	75°C Load-loss	No-load current	Short-circuit impedance
Rated capacity(kVA)	HV(kV)	Tapping ranges	LV(kV)	Vector-group	No-load loss(W)	75°C Load-loss	No-load current	Short-circuit impedance
30	20	±5% ±2*2.5%	0.4	Dyn11	90	660	2.1	5.5
50					130	960	2.0
63					150	1145	1.9
80					180	1370	1.8
100					200	1650	1.6
125					240	1980	1.5
160					290	2420	1.4
200					330	2860	1.3
250					400	3350	1.2
315					480	4010	1.1
400					570	4730	1.0
500					680	5660	1.0
630					810	6820	0.9	6.0
800					980	8250	0.8
1000					1150	11330	0.7
1250					1350	13200	0.7
1600					1630	16950	0.6
2000					1950	19140	0.6
2500					2340	22220	0.5

S11 Series 35kV Off-Excitation Voltage Regulating Transformer Technical Data Sheet

Model	Voltage Combined			Vector-group	No-load loss(W)	Load-loss	Impedance voltage（%）	No-load current（%）	Length（mm）	Width（mm）	heigth（mm）	Track gauge (lateral*longitudinal)（mm）	Body weight(KG)	Oil weight(KG)	Total weight(KG)
Model	HV(kV)	Tapping ranges	LV(kV)	Vector-group	No-load loss(W)	Load-loss	Impedance voltage（%）	No-load current（%）	Length（mm）	Width（mm）	heigth（mm）	Track gauge (lateral*longitudinal)（mm）	Body weight(KG)	Oil weight(KG)	Total weight(KG)
50	35 36 38.5	±5% ±2*2.5%	0.4	Yyn0 or Dyn11	0.212	1.215	6.5	2.0	1195	935	1825	660*660	300	330	860
100					0.295	2.025		1.8	1200	995	1935	660*660	470	383	1130
125					0.34	2.385		1.75	1235	940	1955	660*660	550	465	1335
160					0.369	2.835		1.65	1285	895	1950	660*660	580	485	1475
200					0.432	3.33		1.55	1310	1150	1985	660*660	680	595	1755
250					0.513	3.96		1.4	1450	1090	2010	660*660	860	650	2000
315					0.635	4.87		1.4	1930	1065	2320	820*820	980	765	2290
400					0.738	5.76		1.3	1850	1165	2015	820*820	1170	885	2725
500					0.873	9.63		1.3	2045	1205	2415	820*820	1340	960	3090
630					1.0	8.30		1.25	2085	1240	2515	660*660	1550	895	3810
800					1.25	9.90		1.05	2305	1615	2685	820*820	1990	1030	4510
1000					1.48	12.15		1.0	2545	1540	2590	1070*1070	2415	1475	5055
1250					2.20	16.30		0.85	2495	2010	2675	820*820	2480	1405	5290
1600					2.37	19.5		0.85	2680	2100	2970	820*820	2600	1490	5450
2000					2.84	20.7		0.85	2545	2650	2740	1070*1070	3275	1495	6380
2500					3.2	21.8		0.8	2570	2490	2875	1070*1070	3575	1795	7230
3150					3.8	24.3		0.8	2630	2365	2945	1070*1070	4710	2005	8735