ODM S11-M Type 10kV Series Fully-Sealed Distribution Transformer Supplier, Companies
ODM S11-M Type 10kV Series Fully-Sealed Distribution Transformer Supplier, Companies
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ODM S11-M Type 10kV Series Fully-Sealed Distribution Transformer Supplier, Companies
ODM S11-M Type 10kV Series Fully-Sealed Distribution Transformer Supplier, Companies

ODM S11-M Type 10kV Series Fully-Sealed Distribution Transformer Supplier, Companies

This product series comprises S11-M 10kV Series Fully-Sealed Distribution Transformers, designed for outdoor applications with a capacity range of 30–2500 kVA. Complying with GB standards, these Fully-Sealed Distribution Transformers feature reduced no-load losses (30% lower than S9 series), robust short-circuit resistance, and wave-type tanks for maintenance-free operation. Key specifications include adjustable voltage combinations, Dyn11/Yyn0 connection groups, and compact dimensions. Fully-Sealed Distribution Transformers are ideal for harsh environments, offering enhanced safety with pressure relief valves and gas relays. Customizable options like rectifier or mining transformers are available. Their sealed structure ensures longevity and reliability in diverse industrial settings.

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Product Description

Type Designation

S11-M Type Designation
1 Three-phase Oil-immersed Transformer
2 Performance Level Code
3 Sealed Construction
4 Rated Capacity (kVA)
5 Voltage Class (kV)

Key Features

1. Compared to the S9 type transformer, the no-load loss of this series is reduced by approximately 30% on average.
2. The low-voltage winding uses layer or spiral structure, with high mechanical strength, balanced Ampere-Turn distribution, resulting in good short-circuit withstand capability.
3. The core and windings assembly has added positioning structures to prevent displacement during transportation. All fasteners are equipped with lock nuts to ensure they do not loosen during long-term operation, meeting the requirement for no core lifting.
4. The transformer uses a corrugated tank, eliminating the conservator. The tank cover is fully welded or bolted to the tank flange, extending the service life of the transformer oil.
5. The product surface is treated with degreasing, derusting, and phosphating before spraying with primer and topcoat, meeting special requirements for metallurgical, petrochemical systems, and damp, polluted areas.
6. Selected components are used, featuring a fully sealed transformer tank. Standard accessories include a pressure relief device, signaling thermometer, gas relay, etc., ensuring safe transformer operation.
7. This series of products features an attractive appearance and compact size, reducing the installation footprint. It is an ideal, high-quality, maintenance-free product.

Product Display

10kV Hermetically Sealed Distribution Transformer view 1
10kV Hermetically Sealed Distribution Transformer view 2

Technical Parameters

S11-M Type 10kV Series Fully-Sealed Distribution Transformer Technical Parameters

Rated Capacity
(kVA)		 Voltage Combination Vector Group Symbol No-load Loss
(W)		 Load Loss
(W)		 Short-circuit Impedance
(%)		 No-load Current
(%)		 Weight (kg) Overall Dimensions (mm) Rail Distance
(mm)
High Voltage
(kV)		 Tapping Range
(%)		 Low Voltage
(kV)		 Oil Weight Total Weight Length(L) × Width(W) × Height(H)
30 6
6.3
6.6
10
10.5
11		 ±5
±2×2.5		 0.4 Yyn0
or
Dyn11		 100 600 4.0 1.8 80 300 830×590×980 400×400
50 130 870 1.7 100 360 880×600×1010 400×400
63 150 1040 1.6 110 420 910×650×1040 400×400
80 180 1250 1.5 125 480 930×700×1080 550×550
100 200 1500 1.4 135 550 940×710×1130 550×550
125 240 1800 1.3 145 650 950×720×1150 550×550
160 280 2200 1.2 155 750 1000×740×1220 550×550
200 340 2600 1.1 180 880 1040×750×1250 550×550
250 400 3050 1.0 215 1050 1340×750×1250 550×550
315 480 3650 0.9 240 1220 1350×780×1330 660×660
400 570 4300 0.8 300 1420 1460×840×1360 660×660
500 680 5150 0.8 340 1650 1480×860×1410 660×660
630 810 6200 4.5 0.7 380 2000 1570×930×1460 710×710
800 980 7500 0.7 585 2360 1700×1000×1540 820×820
1000 1150 10300 0.6 630 2720 1780×1060×1640 820×820
1250 1360 12000 0.5 650 3350 1840×1130×1690 920×820
1600 1640 14500 0.5 850 3950 1950×1180×1760 920×820
2000 1940 17200 0.4 900 4600 2050×1250×1830 1070×1070
2500 2300 20300 5.5 0.4 1000 5600 2160×1360×1870 1070×1070
Note:
1. For technical parameters, overall dimensions, and weight data of 10kV class distribution transformers with larger capacities, please inquire with the company.
2. Transformers with various voltage combinations, short-circuit impedances, and connection methods can be provided according to user requirements.
3. Special transformers, such as rectifier transformers, furnace transformers, mining transformers, on-load tap-changing transformers, and transformers with enclosed covers, etc., can be provided according to user requirements.
4. The weight and overall dimension data in the table are for reference only; changes may be made without prior notice.

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

Frequently Asked Questions (FAQ)

What are the main advantages of the S11-M series compared to older transformers like S9?
The S11-M series features approximately 30% lower no-load losses on average compared to S9 models, significantly improving energy efficiency and lowering ongoing operational costs.
Why does this transformer operate without an oil conservator?
It utilizes a corrugated tank whose elastic plates expand and contract to compensate for changes in oil volume. This hermetically sealed structure isolates the oil from air, preventing aging and eliminating the need for an external conservator.
Is this transformer suitable for harsh environmental conditions?
Yes. The tank surface undergoes rigorous processes including degreasing, derusting, and phosphating prior to multi-layer protective painting, making it suitable for metallurgical, petrochemical, damp, and polluted operational environments.
Can custom configurations and parameters be requested?
Yes. Transformers can be customized with various voltage combinations, short-circuit impedances, connection configurations, and specialized variants such as mining, furnace, or rectifier transformers based on user specifications.
Does the transformer require core lifting maintenance during installation?
No. Internal core and coil assemblies are engineered with secure positioning devices and all fasteners are secured with anti-loosening lock nuts, allowing installation without internal core inspection.
What safety and protection devices come standard with the unit?
Standard protective accessories include a pressure relief valve, signaling thermometer, and gas relay, ensuring reliable status monitoring and operational safety.

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