Overview
The S11-M series oil immersed power transformer is a three-phase, fully sealed distribution transformer designed for reliable operation in 50Hz or 60Hz power networks. It combines low loss, low noise and high efficiency to deliver energy savings while reducing environmental pollution.
The transformer uses a corrugated fin tank, which serves two purposes: oil expansion and heat dissipation. Because the corrugated fin tank performs both functions, no separate oil conservator is needed, which reduces maintenance.
Before leaving the factory each unit undergoes 100% testing.
Key Features
- Three-phase, fully sealed design — a fully sealed oil immersed distribution transformer for 50Hz or 60Hz networks.
- Low loss, low noise, high efficiency — the design combines low loss and low noise with high efficiency for energy savings and reduced environmental pollution.
- Corrugated fin tank — the corrugated fin tank serves two purposes — oil expansion and heat dissipation.
- No separate oil conservator — because the corrugated fin tank handles oil expansion, no separate oil conservator is needed, which reduces maintenance.
- Suitable for harsh environments — the transformers are described as versatile and suitable for harsh environments.
- Solar PV and wind step-up — specifically designed for solar PV and wind power step-up applications.
- 100% factory testing — before leaving the factory, each unit undergoes 100% testing.
- Export experience — successfully exported to the US, Europe, Southeast Asia and Africa.
Technical Specifications
| Series | S11-M series oil immersed power transformer |
|---|---|
| Product type | Three-phase, fully sealed distribution transformer |
| Cooling / insulation medium | Oil immersed |
| Tank design | Corrugated fin tank serving oil expansion and heat dissipation |
| Oil conservator | Not required — the corrugated fin tank handles oil expansion |
| Network frequency | 50Hz or 60Hz |
| Design characteristics | Low loss, low noise, high efficiency |
| Factory testing | 100% testing of each unit before leaving the factory |
| Lead time | Usually 15–30 days; raw materials in stock |
| Warranty | 12 months |
| After-sales service | 24/7 technical support and lifetime consulting service |
| Manufacturing | Automated production lines; over 10 years of experience in manufacturing power equipment |
Applications
- Power plants and substations — reliable step-up/step-down for grid transmission.
- Industrial facilities — stable power supply for mines, cement plants and manufacturing lines.
- Renewable energy — specifically designed for solar PV and wind power step-up applications.
- Commercial buildings — indoor and outdoor distribution for shopping malls and hospitals.
- Harsh environments — the transformers are described as versatile and suitable for harsh environments.
Installation Conditions
- The transformer is fully sealed, so no separate oil conservator needs to be installed — the corrugated fin tank handles oil expansion and heat dissipation.
- Installation can be indoors or outdoors, as the transformer is used for both indoor and outdoor distribution.
- Confirm whether the network is 50Hz or 60Hz, as the transformer is designed for reliable operation in either.
- Leave space around the corrugated fin tank for heat dissipation.
How to Select
- Rated capacity required for the load, and the rated voltage ratio of the network.
- Network frequency — 50Hz or 60Hz.
- Whether the application is distribution, or step-up for solar PV or wind power.
- Whether the installation is indoors or outdoors, and whether the environment is a harsh one.
- Lead time required — raw materials are kept in stock and lead time is usually 15–30 days.
FAQ
What is the S11-M transformer?
It is a three-phase, fully sealed oil immersed distribution transformer designed for reliable operation in 50Hz or 60Hz power networks, combining low loss, low noise and high efficiency.
Does the transformer need an oil conservator?
No. The corrugated fin tank serves two purposes — oil expansion and heat dissipation — so no separate oil conservator is needed, which reduces maintenance.
Is the transformer suitable for solar and wind projects?
Yes. It is specifically designed for solar PV and wind power step-up applications, and is also used for industrial, commercial and substation distribution.
What testing is done before delivery?
Before leaving the factory, each unit undergoes 100% testing.
Can it be installed outdoors?
Yes. The transformer is used for indoor and outdoor distribution, for example in shopping malls and hospitals, and is described as suitable for harsh environments.
What is the lead time and warranty?
Raw materials are kept in stock and lead time is usually 15–30 days. The warranty is 12 months, with 24/7 technical support and lifetime consulting service.
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