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Variable Pressure Vapor Phase Vacuum Drying Equipment for Transformers (140m³ Autoclave)This advanced Variable Pressure Vapor Phase Drying (VPD) Equipment is engineered for the active parts of large oil-immersed transformers. Utilizing a built-in cascade evaporator, the process follows a precise sequence (heating, intermediate pressure reduction, fine vacuum, and aeration) to ensure deep moisture removal. With a massive 140m³ horizontal autoclave (7.0×5.0×4.0m), it achieves uniform heating (135±5℃), ultra-low ultimate vacuum (≤6 Pa), and minimal leakage (≤5 mbar·L/s). The system guarantees zero core rust, minimal deformation, and superior insulation drying quality.
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Description
1. Core Features & Advantages ① Advanced Vapor Phase Drying (VPD) Process Employs a cascade evaporator within the autoclave. The automated sequence—heating up, intermediate pressure reduction, pressure reduction, fine vacuum, and aeration—optimizes solvent evaporation and moisture extraction from insulation. ② Variable Pressure Control & Core Protection Cyclic pressure exchange creates ideal conditions for moisture evaporation while preventing core rust and minimizing product deformation. Ensures thorough, gradual drying for high-quality active parts. ③ Massive 140m³ Horizontal Autoclave Tank inner size: 7.0×5.0×4.0m (V=140m³). Usable dimensions: 7000mm (L) × 4600mm (W) × 3300mm (H from trolley). Designed for large transformer cores with hydraulic door opening and electric pulling trolley. ④ Precision Temperature & Vacuum Highest temperature: 135±5℃ with random point difference ≤±5℃. Ultimate vacuum (cool tank): ≤6 Pa. Working vacuum: ≤30 Pa. Leakage rate: ≤5 mbar·L/s. Ensures consistent, energy-efficient drying. ⑤ Complete Integrated Systems Includes solvent evaporating/condensing, wastewater draining, vacuum, heating, cooling, pneumatic, ventilation, and PLC electric control systems for fully automated operation. 2. Key Technical Parameters
3. Main Equipment Composition
4. Application & Benefits
5. Quality Assurance & Manufacturer Service (YIBO Machinery)
→ Contact our engineering team for custom tank dimensions, voltage classes, or integrated transformer active-part drying lines. FAQ
Payment & Delivery Payment term : L/C,T/T,Western Union Delivery time : 90 working days after advance Guarantee: The guarantee period shall be 12 months counting from the date of signing the Acceptance Report of this machine at the end-user’s site，but no longer than 14 months from the date of delivery. What is YIBO? 8A Class Transformer Home with a full solution for the Transformer Industry 1, A real manufacturer with complete in-house facilities and passed ISO9001:2020 quality control system. 2, A professional R&D Center, having collaboration with well-know Shandong University. 3. A top performance company Certificated with International Standards like ISO, CE, SGS and BV etc. 4, A better cost-efficient supplier , all key components are international brands like Simens, Schneider and Mitsubishi etc. 5, A reliable business partner, served for CASC,CRRC,CASDY,ABB,DELIXI, EATON, RITZ,TENGEN, Russia Military Enterprise etc in past 23 years. 6. A factory has passed the global TOP 500 enterprise clients inspection. 7. A market share in China is over 85% and Top 3 in electrical equipment field. 8. A have mainly manufacture the whole of electrical equipment and technical output service for decades. Q1: How to grantee the quality ? The quality is approved by national certificate ,several senior inspection personnel ,the brand material supplier ensure the safety and reliability of everything from storage to finished the goods . Q2:Do you provide overseas installation and training ? A: It’s optional .Our company will provide the guidance and videos for installation and commissioning. If you need ,we can send engineers for for overseas installation and training. Q3:How long is the warranty ? A:The warranty period is 12 months .During Any problems ,our company will respond within 24 hours .
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