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Product Overview
The product boasts a compact size, a beautiful appearance, and a small installation footprint, making it an ideal maintenance-free solution for various power grids.
Model Nomenclature:
S □ – □ – □ / □
- S: Three-phase oil-immersed transformer.
- 1st □: Performance level code (e.g., 11, 13).
- 2nd □: Sealed structure (M).
- 3rd □: Rated capacity (kVA).
- 4th □: Rated voltage (kV).
Product Features
- Advanced Winding Structure: All high-voltage windings utilize a multi-layer cylindrical structure, which effectively improves the impulse distribution of the winding. For capacities ranging from 630-3150kVA, the low-voltage windings adopt a cylindrical or spiral structure, offering high mechanical strength, balanced ampere-turn distribution, and superior short-circuit resistance.
- Reliable Core & Oil System: The iron core is constructed using high-quality cold-rolled grain-oriented silicon steel sheets with staggered joints. Furthermore, the transformer is filled using a vacuum oil injection process to eliminate air and moisture.
- Maintenance-Free Design: A positioning mechanism is added to the active body to prevent any displacement during transportation. Additionally, all fasteners are equipped with locking nuts to ensure they do not loosen during long-term operation, completely satisfying the “no core-lifting” maintenance requirement.
- Durable Enclosure: The product undergoes rigorous degreasing, derusting, and phosphating treatments before being sprayed with primer and protective topcoats. This ensures it meets the special operational requirements of metallurgy, petrochemical systems, and highly humid or polluted areas.
Environmental Operating Conditions
To maintain peak performance, the transformer is designed for the following conditions:
- Device Type: Outdoor type.
- Ambient Temperature: -25°C ~ +40°C.
- Altitude: ≤ 2000m.
- Installation Site: Areas free from corrosive gases and without obvious dirt or pollution.
Technical Data & Specifications
Table: S11-(M) 30kVA ~ 2500kVA Three-Phase Double-Winding Off-Circuit Tap-Changing Distribution Transformer:
