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Distribution Type Transformer 200kVA 160kVA | 20kV to 400V Robust Grid Equipment
The S11 series 200kVA and 160kVA distribution transformers are high-performance power solutions designed to meet the rigorous energy demands of modern real estate development and urban housing projects. Converting 20kV high-voltage grid power to a stable 400V usable supply, these units are hermetically sealed and oil-immersed to ensure maximum cooling efficiency. Built strictly to IEC 60076 standards, this robust grid equipment provides the safety and durability required for residential complexes, commercial plazas, and high-rise construction.
Core Advantages
Engineered for Urban Expansion: High power density design allows for a smaller footprint, making it ideal for compact electrical rooms in real estate projects.
Significant Energy Cost Savings: The S11 ultra-low loss core reduces operational overhead, ensuring long-term profitability for property managers and developers.
All-Weather Reliability: Featuring a reinforced anti-corrosion tank, it operates flawlessly in high-humidity, coastal, or high-temperature environments.
Heavy-Duty Load Handling: Optimized to manage the simultaneous power spikes of HVAC systems, elevators, and industrial pumps common in modern buildings.
Technical Specifications
Core Structure: Utilizes high-quality, cold-rolled grain-oriented silicon steel (CRGO) with a step-lap miter joint to minimize magnetic flux leakage and vibration noise.
Winding Excellence: 99.9% high-purity oxygen-free copper windings wrapped in high-density insulation paper, offering superior thermal stability and electrical conductivity.
Advanced Cooling Geometry: Vertically oriented corrugated fins enhance natural oil convection (ONAN), ensuring rapid heat dissipation even under 100% continuous load.
Sealing Integrity: Vacuum oil-filling process eliminates all air and moisture from the tank, preventing the internal insulation oil from oxidizing or degrading over time.
Off-Circuit Tap Changer: Five-level adjustable tapping (±2x2.5%) allows engineers to fine-tune voltage output according to specific grid conditions.
African Environmental Solutions
Specifically engineered to overcome the challenges of sandstorms and fine dust prevalent in many African regions:
Challenge: Dust accumulation around traditional bushings and gaskets often causes micro-abrasions, leading to oil seepage and contamination.
Solution: High-Grade Silicone Rubber Dust Covers on all bushings and Aircraft-Grade Fluororubber Gaskets that maintain perfect seals where standard rubber would fail.
Challenge: Fine particulates can clog cooling channels and trap heat.
Solution: Wide-Pitch Corrugated Radiator Design allows wind to naturally blow through and clear dust, combined with Three-Layer Marine-Grade Epoxy Coating to prevent sand abrasion and rust.
Challenge: Moisture absorption during sandstorm-induced pressure changes.
Solution: Fully Hermetical Vacuum-Sealed Construction ensures no "breathing" of outside air, keeping the internal environment 100% pure despite dusty conditions.
Frequently Asked Questions
Q1: Is this transformer compatible with 50Hz and 60Hz power grids?
A1: Our standard S11 model is designed for 50Hz, but we can customize the internal frequency design to 60Hz to meet specific regional requirements in Africa.
Q2: How do you handle shipping to landlocked countries like Ethiopia or Mali?
A2: We use heavy-duty seaworthy plywood cases and internal steel bracing to prevent any movement during the complex multi-modal transport from port to inland sites.
Q3: Does the unit come with pre-filled oil and test certificates?
A3: Yes, all units are shipped fully oil-filled and ready for installation. Each transformer comes with a comprehensive Routine Test Report and IEC Compliance Certificate.
Q4: Can we request customized high-voltage bush positions for specific site layouts?
A4: Yes, we provide flexible design options for terminal arrangements (top or side) to accommodate your EPC project's cabling requirements.
Q5: What is the lifespan of the S11 model in desert-fringe regions?
A5: With our dust-proof upgrades and sealed design, the expected service life exceeds 30 years with minimal on-site intervention.
Request a factory-direct technical quote and full IEC test report from our team today!
