This transformer oil purifier is specially designed for ultra-high voltage projects, including 1000 kV, ±800 kV, 750 kV, and ±660 kV systems. It is intended for substation maintenance contractors and utilities that require fast and reliable oil purification.
- Optional evaporation chamber with larger space for better degassing and dehydration
- Automatic pressurization and defoaming system, stable operation over 200 hours without bubbles
- Bottom atomizer increases evaporation area and improves degassing efficiency
- Vacuum balance pressure technology improves pumping efficiency by 50%
- Level control system ensures continuous oil supply and prevents oil pyrolysis
- PLC control system for stable automatic operation
- All key parts from world-famous brands
Transformer Oil in UHV Power Systems
In ultra-high voltage (UHV) transformers, insulating oil plays a critical role in electrical insulation and heat dissipation. It maintains dielectric strength and ensures stable operation of internal windings and components.
During long-term operation, the oil gradually degrades due to moisture ingress, oxidation, dissolved gases, and particulate contamination. Even a small increase in water content can significantly reduce dielectric strength and increase the risk of partial discharge and insulation failure.
Challenges in UHV Applications
UHV systems operating at 500kV–1100kV AC and ±800kV DC require extremely stable insulation conditions. Contaminated oil can distort the electric field inside the transformer, accelerating insulation aging and increasing the probability of breakdown events.
Role of Transformer Oil Purification
Transformer oil purification systems are used to restore and maintain oil dielectric properties by removing moisture, dissolved gases, and solid contaminants.
Key benefits include:
- Maintaining dielectric strength and insulation stability
- Reducing partial discharge and insulation aging
- Extending transformer service life
- Improving operational reliability of UHV substations
- Reducing maintenance frequency and unplanned outages
- Degassing: Removes dissolved gases such as acetylene, ethylene, ethane, methane, hydrogen, carbon monoxide, and carbon dioxide.
- Dehydration: Removes free and dissolved water, including drying of transformer windings insulation.
- Particle removal: Eliminates solid impurities from the oil.
- Decolorization and regeneration: Removes acids and improves oil color and overall quality.
Technical Specifications
| Parameter | Type Unit | UVP-10 | UVP-15 | UVP-20 | UVP-30 |
| Flow Rate | L/H | 6000 | 9000 | 12,000 | 18,000 |
| Working Pressure | Mpa | ≤0.5 | |||
| Temperature Range | C | 20℃ ~ 60℃ (68℉ ~ 140℉) | |||
| Power Supply | optional | ||||
| Noise | dB(A) | ≤65 ~ 85 | |||
| Continues Running Time | Hour | ≥200 | |||
| No Problem Running Time | Hour | ≥5,000 | |||
| Working Vacuity | Pa | ≤20 | |||
| Ultimate Vacuum | Pa | ≤3 | |||
| Heating Power | KW | (2-3)*30 | (3-4)*30 | (4-5)*30 | (5-6)*30 |
| Total Power | KW | 68.or anove 68 | 99, or above 99 | 132, or above 132 | 198, or above 198 |
| Inlet/Outlet Diameter | mm | 45 / 45 | 58 / 58 | 58 / 58 | 75 / 75 |
| Length | mm | 1800 | 1900 | 1950 | 2200 |
| Width | mm | 1500 | 1800 | 1850 | 1950 |
| Height | mm | 2300 | 2550 | 2600 | 2650 |
| Weight | Kg | 1300 | 1700 | 2300 | 3100 |
| Oil purified before | |
| Water Content | ≤60ppm |
| Gas Content | ≤0.1 % |
| Breakdown Voltage | ≥30KV/2.5mm |
| Particle | ≤70000 (5-50micron) |
| After oil purified | |
| Water Content | ≤1-3ppm |
| Gas Content | ≤0.05% |
| Acetylene Content | NO |
| Breakdown Voltage | ≥75KV |
| Particle Qty In 100ml Oil | ≤500 (5-50 micron), (0 for ≥100 micron particle). |
| Acid Value | ≤0.1mgKOH/g |
These systems are widely applied in UHV transmission networks, large substations, power generation facilities, and grid maintenance operations.
| Parameter | Before Oil Purification | After Oil Purification |
|---|---|---|
| Water Content | ≤60 ppm | ≤1–3 ppm |
| Gas Content | ≤0.1% | ≤0.05% |
| Breakdown Voltage | ≥30 kV / 2.5 mm | ≥75 kV |
| Particle Level | ≤70,000 particles (5–50 micron) | ≤500 particles in 100 ml oil (5–50 micron), 0 particles ≥100 micron |
| Acetylene Content | — | NO |
| Acid Value | — | ≤0.1 mgKOH/g |
Need High-Voltage Transformer Oil Treatment? Contact Us Now
ZANYO designs reliable, durable, and easy-to-operate equipment, serving customers in over 40 countries and maintaining a solid reputation worldwide. Our oil purifier is engineered for ultra-high voltage (UHV) transformer maintenance in 600kV–1000kV power grids. It focuses on removing moisture and dissolved gases while restoring dielectric strength under high electrical stress conditions. Contact us to get customized solutions and pricing based on your project needs.
