12000L/H Double-Stage High Vacuum UHV Transformer Oil Purifier – Restore Dielectric Strength to ≥70kV, Moisture ≤3ppm
Restores used transformer oil to “like new” condition, extends transformer life, and significantly reduces downtime and maintenance costs.
- High Capacity: 12,000 L/H (12 tons/hour) – Perfect for fast processing of large UHV transformers (110kV–1000kV+)
- Superior Oil Quality: Achieves Breakdown Voltage ≥70kV, Moisture ≤3ppm, Gas Content ≤0.05%, and Filtration Precision ≤1μm
- Double-Stage High Vacuum System: Dual vacuum pumps + 3D flash evaporation for rapid dehydration and degassing
- Online Purification: Supports energized (live) transformer oil treatment – no power interruption required
- Premium Components: Leybold/Busch vacuum pumps, Siemens/Schneider electrics, high-quality filters for maximum reliability
- Smart & Safe Operation: PLC control, unattended 24/7 running, full automatic protection systems
- Energy Efficient & Durable: Uniform carbon fiber heating, cleanable filters, low maintenance design
About 12000L/H Transformer Oil Purificationn System
The ZYD-II Transformer Oil Purifier has a capacity of 12,000 L/h and is designed for purifying and vacuum drying transformer oil during installation and maintenance of large-scale transformers. It effectively removes moisture, gas, and solid impurities from both new and used oil, improving flash point and dielectric strength.
To achieve this, the unit features a double-stage vacuum system, consisting of a main pump and a booster pump, and a three-dimensional flash evaporation chamber. This design enables rapid dehydration and degassing under high-vacuum conditions, raising the oil’s dielectric breakdown voltage to over 35 kV in a single cycle.
In addition, the system removes acid and free carbon, and it can serve as an independent vacuum source for transformer vacuum drying and oil filling operations. It is ideal for insulation oil used in 110 kV–500 kV and higher voltage transformers.
Key Benefits and Functions Include:
- Moisture Removal: The treated oil can achieve a moisture content below 3 ppm.
- Degassing: The final oil has a dissolved gas content of less than 0.05%.
- Particle Removal: Solid particles are reduced to 1 micrometer or smaller.
- Vacuum Oil Injection: Supports safe and efficient transformer oil filling.
- Vacuum Drying: Equipment is suitable for transformer drying operations.
- Online Operation: The purification system can operate unattended during online processing.
| Index name | unit | 200 |
| Flow rate | L/H | 12000 |
| Working vacuum | Pa | ≤133 |
| Temperature range | ℃ | 20 ℃ ~ 60℃(68℉ ~ 140℉) |
| Working pressure | MPa | ≤ 0.5 |
| Power supply | As per user’s option | |
| Working noise | dB(A) | ≤65 ~ 85 |
| Heating power | Kw | 125 |
| Total power | Kw | 135 |
| Inlet(Outlet) | mm | Φ58 |
| Weight | kg | 1300 |
| Dimension-L | mm | 2250 |
| Dimension-W | mm | 1300 |
| Dimension-H | mm | 2250 |
Technical Performance Indicators:
After oil filtration treatment, the following indexes are achieved:
| Breakdown Voltage Value | ≥70KV |
| Fine Filter Precision | ≤1-3μm |
| Gas Content | ≤0.05% |
| Water Content | ≤3ppm |
| Working Temperature | 40-70℃ |
| Working Vacuum | ≤133pa |
| Ultimate Vacuum | ≤5pa |
1200L/H transformer oil purifier features dual vacuum tanks that enhance dehydration and degassing efficiency. Through a combination of vacuum separation, precision filtration, molecular adsorption, and vacuum drying, it achieves deep purification.
The system effectively removes moisture, gases, solid particles, free carbon, acids, and colloids. After treatment, the insulation oil regains its dielectric strength and clarity, restoring performance and ensuring reliable transformer operation.
Custom Configuration Options:
- Vacuum Pump: Brands include Atlas, Leybold, Busch, Joysun, and Hokaido, ensuring reliable and efficient vacuum performance.
- Oil Pump: Equipped with premium pumps such as Italian SEIM screw-type pump, German KRACHT, or Tianjin screw pump, selected according to oil viscosity and system requirements.
- Electrical Components: Siemens and Schneider parts provide stable and safe operation.
- Control and Monitoring: PLC-controlled system with touch-screen interface for intelligent operation; optional BDV oil tester, moisture sensor, and flow meter enable real-time oil quality monitoring.
- Additional Options: Customizable features include enclosed doors, mobile trailer, integrated lighting, tool box, and specially designed frame structures for enhanced mobility and protection.
When a 12000L/H Transformer Oil Purifier is Needed
A 12000L/H double-stage high vacuum transformer oil purifier is ideal for large-scale power transformers (110kV to 1000kV UHV) during installation, commissioning, overhaul, and routine maintenance. Its powerful dual-stage vacuum system with 3D flash evaporation technology delivers superior dehydration and degassing, achieving moisture ≤3ppm, gas content ≤0.05%, and breakdown voltage ≥70kV.
This high-capacity system is especially suited for substations, power plants, and industrial facilities operating in humid or heavily contaminated environments. It supports online purification without power interruption, vacuum oil filling, and transformer vacuum drying — significantly reducing downtime and extending transformer service life.
Key applications include:
- On-site purification and regeneration of insulating oil in 110kV+ power transformers
- Vacuum oil filling and transformer vacuum drying
- Energized (live) online oil treatment
- Preventive maintenance in power substations, transmission systems, and power generation plants
- Commissioning of new transformers and major overhaul projects
Before vs After Treatment Results
| Parameter | Typical Before Treatment | After ZANYO Treatment | Industry Standard |
|---|---|---|---|
| Breakdown Voltage | 30–45 kV | ≥70 kV | ≥60–70 kV |
| Water Content | 20–50 ppm | ≤3 ppm | ≤5–10 ppm |
| Gas Content | 1–5% | ≤0.05% | ≤0.1% |
| Particle Size | Visible impurities | ≤1 μm | – |
Ready to Improve Your Transformer Oil Quality and Reduce Costs?
12000L/H UHV Transformer Oil Purifier from ZANYO delivers best purification results with double-stage vacuum technology. Achieve cleaner oil, longer equipment life, and lower operating costs — all with minimal disruption to your operations.
