Transformer Oil Purifier
Transformer Oil Purifier is designed to restore insulating oil performance for power transformers, instrument transformers and switchgears. It handles onsite maintenance, commissioning oil treatment and aged oil restoration for substations and power facilities.
Common Transformer Oil Problems
Over service time or onsite operation will bring multiple contaminants into transformer insulating oil:
- Moisture ingress from poor sealing, humidity during site installation Dissolved fault gas generated under partial discharge
- Solid particles from component wear and insulation aging
- Acid build up caused by long term oxidation
These contaminants reduce breakdown voltage, accelerate insulation aging, and raise hidden failure risks for power transformers. Timely oil purification restores oil performance and extends transformer service life.
Our transformer oil purifier removes water, dissolved gas, solid particles and oxidation by products via physical vacuum separation and multi stage filtration.
After full cycle treatment(Double stage high vacuum type):
Moisture content down to ≤3 ppm
Breakdown voltage raised above 75 kV Solid particle cleanliness reaches NAS 1638 Class 6
Supports transformer vacuum evacuation, hot oil circulation and vacuum oil filling for commissioning & maintenance.
How to Choose the Right Transformer Oil Purifier
Know your transformer voltage level：
≤66 kV routine maintenance: single stage vacuum transformer oil purifier
110kV 500kV commissioning / onsite overhaul: select double stage high vacuum type
Confirm your oil volume & required throughput Match flow rate according to total oil volume; typical rule of thumb: complete full circulation within 24 hours.
Working environment Indoor workshop: standard caster mounted unit Frequent site transfer: highway trailer mobile version Outdoor rainy dust site: IP54 weather proof enclosure
Oil condition Severe oxidation & high acid value: add clay regeneration module Only water/gas/particle contamination: standard vacuum purification unit
Send us your transformer rating, oil volume and site condition, we offer free custom recommendation.
Model Comparison
|
Model |
Core Type |
Recommended Scenario |
Key Advantage |
|
ZY Series |
Portable Vacuum Insulating Oil Purifier |
Power & mining site routine oil purification |
Small, portable, and efficient, ZY moves easily and can be used both indoors and outdoors. |
|
ZYD Series |
Double-Stage Vacuum Transformer Oil Purifier |
Substation workshop & transformer commissioning |
Double-stage high vacuum (vacuum pump + roots pump)；Higher vacuum level |
|
ZYD-M Series |
Outdoor Mobile Transformer Oil Purification Plant |
Outdoor field operations |
Leak-proof base, trailer-mount capable；all-weather mobile for on-site substation overhaul |
|
ZYD-I Series |
Transformer Oil Regeneration System |
Aged insulating oil on-site regeneration |
removes acidity, sludge, decolorizes aged oil, extends transformer service lifea |
Reference Projects
We have supplied transformer oil purification equipment for power plants, grid substations, heavy industry energy stations across many regions. Our units run for transformer commissioning, annual maintenance and emergency onsite oil treatment. Contact us to get project case references matching your voltage class.
Why Choose Us
Direct factory supply with complete production and testing workshop
Full set custom service: flow rate, trailer, explosion proof, IP protection, power voltage Strict predelivery test before shipment Global after sales support, operation guidance and spare parts supply Complete documentation: test reports, CE relevant certification documents available
FAQ
Chongqing TOP Oil Purifier Co., Ltd. is one of the most experienced transformer oil purifier manufacturers and suppliers in China. Please rest assured to buy CE approved transformer oil purifier made in China here from our factory. We also accept customized orders.
vacuum oil purifier, lube oil separator, oil filtration