Product Description
The Yueqing JASCO Electric S13-M series 10kV three-phase fully sealed oil-immersed distribution transformer is an upgraded version of the S11 series, characterized by extremely low energy consumption. It is widely used in urban and rural grid renovation projects, as well as in industrial facilities, commercial districts, and photovoltaic power plants.
The transformer core utilizes high-quality grain-oriented silicon steel sheets, processed on GEORG cutting equipment into a multi-step circular cross-section structure with mitered joints; this design significantly reduces load losses, exciting current, and operating noise.
The high-voltage windings of the S13-M series feature a cylindrical structure, while the low-voltage windings are designed as either cylindrical or foil-type structures. Optimized winding configurations and improved magnetic flux paths provide the transformer with superior short-circuit withstand capability and exceptional mechanical strength.
The corrugated oil tank is manufactured on a dedicated GEORG production line and treated with a corrosion-resistant coating, enabling it to withstand harsh outdoor operating environments. As a fully sealed unit that eliminates the need for an oil conservator, the corrugated tank walls automatically compensate for the thermal expansion and contraction of the oil; by isolating the insulating oil from the outside air, this design minimizes oil aging and reduces routine maintenance requirements.
A concentric winding arrangement combined with a Class A insulation system (utilizing insulating board barriers and oil gap structures) ensures stable insulation performance.
To accommodate grid voltage fluctuations and maintain a stable 0.4kV output, the unit is equipped with an off-circuit tap changer offering adjustment ranges of ±5% or ±2×2.5%. Connection groups are available as Dyn11 or Yyn0; the Dyn11 configuration effectively suppresses zero-sequence harmonics and accommodates unbalanced single-phase loads. The S13-M series 10kV three-phase fully sealed oil-immersed distribution transformers are available in a capacity range from 30kVA to 2500kVA. This series of products utilizes the ONAN (oil-immersed natural cooling) method and complies with IEC 60076 and GB/T 1094 standards. Each unit must undergo comprehensive Factory Acceptance Tests (FAT) before leaving the factory and entering service.
Product Specification
|
Performance Category |
Characteristic Description |
|
Energy‑saving Performance |
Upgraded low‑loss silicon‑steel core; lower no‑load loss versus S11 for reduced long‑term operation cost. |
|
Short‑circuit Withstand |
Cylindrical / foil winding reinforcement; strong resistance against short‑circuit electromagnetic shock. |
|
Sealing & Maintenance |
Conservator‑free corrugated fully‑sealed tank; oil isolated from air, slow aging, minimal maintenance. |
|
Voltage Adaptability |
Off‑circuit tap ±5% / ±2×2.5%, stabilizes 0.4kV output amid incoming‑voltage deviation. |
|
Load Compatibility |
Optional Dyn11 / Yyn0. Dyn11 restrains harmonics and tolerates unbalanced single‑phase loads. |
|
Noise & Insulation |
Optimized core stacking reduces noise; Class‑A insulation meets 10kV dielectric test requirements. |
|
Cooling Mode |
ONAN natural oil‑air cooling, no auxiliary fan required for rated‑load operation. |
Product Advantage
The high-voltage winding utilizes a cylindrical structure, while the low-voltage winding employs either a cylindrical or foil design. Optimized magnetic circuit distribution and enhanced mechanical design effectively withstand the electromagnetic forces generated during short-circuit events.
Manufactured using the GEORG-Goliath tank production line. Tank surfaces undergo degreasing, phosphating, and anti-corrosion coating treatments. A fully sealed structure (eliminating the need for an oil conservator) utilizes the elasticity of the corrugated tank walls to compensate for thermal oil expansion and contraction; this isolates the oil from the atmosphere, thereby retarding oil aging and extending the transformer's service life.
Equipped with a tap changer offering adjustment ranges of ±5% or ±2×2.5%, ensuring a stable 0.4kV output even amidst voltage fluctuations. Options for Dyn11 or Yn0 vector groups are available; the Dyn11 connection suppresses zero-sequence harmonics and accommodates single-phase unbalanced loads typical of non-linear load conditions.
Features a Class A insulation system with concentric windings and pressboard oil-duct spacers. An optimized core structure minimizes operational magnetostriction and noise, making the unit suitable for installation in residential areas, commercial districts, and outdoor environments.
Power ratings range from 30 to 2500 kVA, utilizing ONAN (Oil Natural Air Natural) cooling. Every transformer undergoes comprehensive factory acceptance testing (FAT) in strict accordance with IEC 60076 and GB/T 1094 standards prior to shipment.
Operating Environment Conditions
- Ambient air temperature: Maximum temperature: +40 ℃ Minimum temperature: ‑25 ℃ Average temperature within 24 hours: ≤+30 ℃ Annual average temperature: ≤+20 ℃
- Altitude: ≤1000 m above sea‑level. For altitude over 1000 m, special design shall be required.
- Installation site: Outdoor installation. No severe vibration, no violent shock.
- Atmospheric conditions: The air shall be free from corrosive gas, conductive dust, explosive or flammable substances. Relative humidity of air: ≤95% (at +25 ℃, no condensation).
FAQ
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