Oil Centrifuging
High-Vacuum 2-Stage Transformer Oil Dehydration, Degassing & BDV Restoration
Mobile high-vacuum transformer oil purification, dehydration, degassing, and sub-micron particle filtration. Restores dielectric breakdown voltage (BDV) above 65kV on-site without plant shutdown.
Key Deliverables & Specifications
6,000 LPH High-Vacuum Capacity
Double-stage rotary vane vacuum system delivering deep negative pressure.
Guaranteed Dielectric BDV > 65 kV
Rigorous before & after testing with on-site printed dielectric breakdown certificates.
Sub-Micron Multi-Stage Filtration
1-micron depth filtration cartridges capturing microscopic sludge.
Live On-Line Circulation Capability
Equipped with Buchholz relay trip-bypass and auto de-aeration for live filtration.
Engineering Scope & Capabilities
Mobile High-Vacuum Transformer Oil Centrifuging & Filtration
Transformer dielectric oil degrades over time due to moisture absorption from the atmosphere, paper aging, and oxidation sludge. Trafo Engineering operates a fleet of mobile high-vacuum oil centrifuging and purification units equipped to service transformers on-site anywhere in Bangladesh.
Key Benefits of High-Vacuum Oil Filtration
- Dielectric Strength Restoration: Elevates BDV from degraded levels (<25kV) to fresh laboratory standards (>65kV–80kV).
- Moisture Extraction: Removes dissolved and emulsified water down to < 10 ppm via vacuum flash evaporation at 60°C.
- Combustible Gas Removal: Extracts hydrogen, acetylene, and methane gases to mitigate internal arc explosion risks.
- Sub-Micron Particulate Removal: 1-micron filter cartridges remove suspended carbon and fiber debris.
Step-by-Step Engineering Methodology
Initial Oil Sampling & BDV Test
Sampling bottom and top oil to benchmark breakdown voltage, moisture, and color index.
Closed-Loop Heated Vacuum Circulation
Heating oil to 60°C and circulating through double-stage vacuum degassing chambers.
Fine Cartridge De-Sludging
Passing heated oil through 1-micron microfiber filter arrays under vacuum.
Post-Treatment BDV Validation & Certification
Multi-shot automated BDV testing to certify compliance with IEC 60296 standards.
Diagnostic & Calibration Instruments
| Testing Instrument / Apparatus | Capability & Standard Compliance |
|---|---|
| Mobile Oil Purification Plant | Trafo Tech 6000 LPH High-Vacuum 2-Stage Unit |
| Automated Oil BDV Tester | Foster / Trafo-Tech 80kV Automated Breakdown Tester |
| Karl Fischer Moisture Titrator | PPM Water Content Precision Analyzer (IEC 60814) |
| Vacuum Pump System | Edwards 2-Stage Mechanical Booster Vacuum System |
Frequently Asked Technical Questions
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