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Fully sealed oil-immersed distribution transformer 6 to 11kV

  • Fully sealed oil-immersed distribution transformer 6 to 11kV

Key attributes

Brand Vziman
Model NO. Fully sealed oil-immersed distribution transformer 6 to 11kV
Rated voltage 6.3kV
Rated frequency 50/60Hz
Rated capacity 600kVA
Series S11-M
Description
Built for AC 50Hz power systems, these S11-M units are available with primary voltage ratings of 6kV, 10kV, or 11kV to match various grid standards. Ideal for petroleum, metallurgy, chemical, textile, and light industrial facilities—including dust-heavy environments—they deliver reliable power distribution with minimal maintenance.
Their fully sealed design eliminates oil leaks, blocks dust and moisture, and enables maintenance-free long-term operation. With low losses, low noise, and strong overload capability, they ensure stable power even under harsh conditions, meeting industrial-grade reliability requirements.

Product Showcase Video

Feature

  • Fully Hermetic Sealing：Prevents oil leakage and effectively isolates dust, moisture, and corrosive gases, ensuring stable operation in demanding industrial workshops.
  • Low Loss & High Efficiency：Advanced core and winding design significantly reduces no-load and load losses, cutting long-term energy costs and meeting global efficiency standards (e.g., IEC 60076-1, GB 20052 Tier 2).
  • Wide Application Compatibility：Optimized for 50Hz systems, suitable for petroleum, metallurgy, chemical, textile, and light industry sectors.
  • Low Noise & Maintenance-free：Noise-reducing structural design for quiet operation; the sealed design eliminates routine oil changes and maintenance, lowering overall O&M costs.
  • Strong Overload & Short-circuit Withstand：Reinforced clamp and frame structure enhances mechanical strength, delivering excellent overload capacity and short-circuit withstand performance (compliant with IEC 60076-5) to cope with sudden load fluctuations in industrial grids.

Technical Parameters

Rated capacity
(kVA)		 Voltage combination The connection group designation number No-load loss
(W)		 Load Loss
(W)		 No-load current
(%)		 Short Circuit Impedance
(%)		 Weight (kg)
High Voltage
(kV)		 High voltage tapping range Low Voltage
(kV)		 oil weight Total weight
30 6
6.3
6.6
10
10.5
11		 ±5% or
±2×2.5%		 0.4 Yyn0
Dyn11		 100 630/600 2.1 4 75 295
50 130 910/870 1.1 88 395
63 150 1090/1040 1 95 420
80 180 1310/1250 1 103 480
100 200 1580/1500 0.9 115 540
125 240 1890/1800 0.9 130 645
160 280 2310/220 0.8 145 740
200 340 2730/2600 0.8 175 885
250 400 3200/3050 0.7 195 1010
315 480 3830/3650 0.7 230 1205
400 570 4520/4300 0.6 255 1375
500 680 5410/5150 0.6 285 1620
630 810 6200 0.6 4.5 350 1960
800 980 7500 0.5 405 2310
1000 1150 10300 0.5 490 1690
1250 1360 12000 0.5 550 3315
1600 1640 14500 0.4 625 3795
Note: The load loss value on the left side of the slash in the table applies to the Dyn11 connection group, while the value on the right side of the slash applies to the Yyn0 connection group.

Schematic Diagram

6.3kV 24kV 33kV Fully sealed oil-immersed power distribution transformer

Documentation Resource Library power distribution transformer

More
Public.
Vziman oil-transformer up to 20MVA of Data sheet Vziman oil-transformer up to 20MVA of Data sheet
Catalogue
English
PDF

Frequently asked questions

The core advantage of the fully sealed oil-immersed distribution transformer lies in its fully sealed structure, which isolates air, moisture, and dust to prevent insulation oil oxidation and contamination, thereby eliminating routine oil changes and breather maintenance while significantly extending service life and reducing long-term operating costs.

At the same time, this structure provides superior environmental resilience, enabling stable and reliable operation in harsh conditions—such as outdoor sites, industrial workshops, and high-humidity environments—where conventional transformers are prone to failure.

Know your supplier

Vziman
Online store
On-time delivery rate
Response time
100.0%
≤4h
Company overview
Workplace: 10000m² Total staff: 300 Highest Annual Export(usD): 150000000
Services
Business Type: Design/Manufacture/Sales
Main Categories: Medium and High Voltage Switchgear/Lighting and Monitoring Equipment/Power and Distribution Transformers/IT and AI Support Equipment/Lightning Protection and Electrical Insulation/Substations and E-Houses/Power Electronic Equipment/Electrical Panel and Controlgear
$2640.00
Pricing calculator
Model
S11-M-6.3/600
Vziman oil-transformer up to 20MVA of Data sheet
Warranty by
Whole life care manager
Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.
The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.
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