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S11 Series Oil-Immersed Power Transformer

Name: S11 Series Oil-Immersed Power Transformer
SKU: 0

Our company's S11-M series fully sealed oil-immersed power transformers boast advantages such as low loss, low noise, and high efficiency, achieving excellent energy-saving effects and reducing pollution. Compared to ordinary oil-immersed transformers, the fully sealed transformer eliminates the oil conservator; changes in oil volume are automatically adjusted and compensated for by the elasticity of the corrugated sheets in the corrugated tank. The transformer is isolated from air, preventing and slowing down oil deterioration and insulation aging, enhancing operational reliability, and requiring no maintenance during normal operation.

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Product Description

1. The transformer core is constructed from imported high-quality cold-rolled silicon steel sheets, significantly reducing no-load loss and no-load current. The core is also bound to ensure its compactness and reduce noise.

2. High and low voltage windings are wound with oxygen-free copper. The low-voltage windings of 500KVA and below adopt a double-layer cylindrical structure, while those of 630KVA and above adopt a double-helix or quadruple-helix structure. The high-voltage winding adopts a multi-layer cylindrical structure.

3. The transformer connection group adopts Dyn11, reducing the impact of harmonics on the power grid and improving power supply quality.

4. The transformer features a fully sealed structure, extending its service life and eliminating the need for core lifting and maintenance.

5. Actual noise levels are below standard.

After normal transportation, this series of transformers can be installed with relevant components and subjected to acceptance tests without the need for core lifting inspection. Once passed, it can be put into operation.

S11 Type 10KV Double Winding Series Main Product Performance Parameters:

Model	Rated Capacity (KVA)	Connection Mark	Voltage Combination (KV)			No-load Loss (W)	Load Loss (W)	No-load Current (%)	Short-circuit Impedance (%)
Model				High Voltage	Tap Range	Low Voltage
S11-M-30	30	Yyn0 or Dyn11	6、6.3、10、10.5	±5% or ±2×2.5%	0.4	100	630/600	1.5	4.0
S11-M-50	50					130	910/870	1.3	4.0
S11-M-63	63					150	1090/1040	1.2	4.0
S11-M-80	80					180	1310/1250	1.2	4.0
S11-M-100	100					200	1580/1500	1.1	4.0
S11-M-125	125					240	1890/1800	1.1	4.0
S11-M-160	160					280	2310/2200	1.0	4.0
S11-M-200	200					340	2730/2600	1.0	4.0
S11-M-250	250					400	3200/3050	0.90	4.0
S11-M-315	315					480	3830/3650	0.90	4.0
S11-M-400	400					570	4520/4300	0.80	4.0
S11-M-500	500					680	5410/5100	0.80	4.0
S11-M-630	630					810	6200	0.60	4.5
S11-M-800	800					980	7500	0.60	4.5
S11-M-1000	1000					1150	10300	0.60	4.5
S11-M-1250	1250					1360	12000	0.50	4.5
S11-M-1600	1600					1640	14500	0.50	4.5
S11-M-2000	2000					1940	18300	0.40	5.0
S11-M-2500	2500					2290	21200	0.40	5.0

Note: The load loss value above the slash in the table applies to Dyn11 or Yzn11 connection groups, and the load loss value below the slash applies to Yyn0.

Main Product Performance Parameters of S11 Type 20KV Double Winding Series:

Model	Rated Capacity (KVA)	Connection Mark	Voltage Combination (KV)			No-load Loss (W)	Load Loss (W)	No-load Current (%)	Short-circuit Resistance (%)
		Connection Mark		High Voltage	Tap Range	Low Voltage
S11－M－30	30	Dyn11	20	±5%	0.4	100	690	2.1	5.5
S11－M－50	50				0.4	130	1010	2.0	5.5
S11－M－63	63				0.4	150	1200	1.9	5.5
S11－M－80	80				0.4	180	1440	1.8	5.5
S11－M－100	100				0.4	200	1730	1.6	5.5
S11－M－125	125			±5% or ±2×2.5%	0.4	240	2080	1.5	5.5
S11－M－160	160				0.4	290	2540	1.4	5.5
S11－M－200	200				0.4	340	3000	1.3	5.5
S11－M－250	250				0.4	400	3620	1.2	5.5
S11－M－315	315				0.4	480	4210	1.1	5.5
S11－M－400	400				0.4	570	4970	1.0	5.5
S11－M－500	500				0.4	680	5940	1.0	5.5
S11－M－630	630				0.4	810	6820	0.9	6.0
S11－M－800	800				0.4	980	8250	1.8	6.0
S11－M－1000	1000				0.4	1150	11330	0.7	6.0
S11－M－1250	1250				0.4	1380	13200	0.7	6.0
S11－M－1600	1600				0.4	1660	15950	0.6	6.0
S11－M－2000	2000				0.4	1950	19140	0.6	6.0
S11－M－2500	2500				0.4	2340	22220	0.5	6.0

Note: This 20KV transformer can be equipped with a dual-voltage connection on the high-voltage side according to customer requirements. That is, the input terminal of the transformer can be switched via a transfer switch based on the two different voltages (20KV and 10KV) on the same side.

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