PureTech Mobile Oil Treatment Plant for Power Transformer (Model DVOP) is mainly used for high voltage power transformers 400/230KV with different power capacity varies up to 300 MVA, 230/66KV with different power capacity varies up to 125 MVA. The oil treatment plant is capable to re-improve the power transformer oil characteristics up the required or recommended value by transformer manufacturers or IEC standards.
DVOP Double-stage High Vacuum Mobile Oil Treatment Plant is designed to carry out the operations and functions of filtration, dehydration and degasification of dielectric oil. It is workable for vacuum filling-up transformers with insulating oil and periodic maintenance at electricity transmission substations.
• Moisture content shall be decreased to below 5 ppm according to IEC 60814 or ASTM D1533 standards.
• Gas content shall be reduced down to below 0.1% according to the IEC 60567 or ASTM D2945 standard.
• Three stages of filter cartridges to reduce the particles over 1 micron in the oil.
• Dielectric strength of transformer oil shall be improved above 75KV.
1. Oil flow rate ranges from 1,800 ltr/hr to 18,000 ltr/hr, suitable for various demands of transformer maintenance.
2. At least two-stage Heating with thermostat, ensure uniform heating and prevent overheating.
3. Double-stage vacuum pumps create and maintain sufficient and high vacuum level inside the oil treatment plant, maximumly ensure the efficiency and effect of oil dehydration/degassing.
4. Multi-stages filter cartridges keep the filtering precision higher than 1 micron.
5. Multi protection settings, oil level in the vacuum chamber works together with electrical heater and solenoid valve, phase-break protection, etc.
6. Oil treatment plant mounted on a mobile trailer with metallic cover. Easy to access and operate in different transmission substations.
7. Transformer vacuuming can be performed by this oil treatment plant (OPTIONAL).
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Technical Parameters of Mobile Oil Treatment Plant
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Machine Parameter |
Item | Unit | DVOP-30 | DVOP-50 | DVOP-75 | DVOP-100 | DVOP-150 | DVOP-200 | DVOP-300 | |
| Flow rate | liters/hour | 1800 | 3000 | 4500 | 6000 | 9000 | 12000 | 18000 | ||
| Vacuum degree | Mpa | (-0.08) ~ (-0.099) | ||||||||
| Working pressure | Mpa | ≤ 0.3 | ||||||||
| Temperature range | ℃ | 40 ~ 80 | ||||||||
| Power supply | 380Volts, 50Hz, 3Phase (Note: Power supply can be customized according to your local power.) | |||||||||
| Heating power | kw | 24 | 30 | 48 | 60 | 90 | 120 | 130 | ||
| Total power | kw | 26 | 34 | 54 | 68 | 100 | 135 | 146 | ||
| Inlet/outlet diameter | mm | 32 | 32 | 44 | 44 | 50 | 58 | 65 | ||
| Size | Length | mm | 1250 | 1350 | 1550 | 1800 | 2000 | 2100 | 2300 | |
| Width | mm | 900 | 1000 | 1150 | 1400 | 1750 | 1850 | 2000 | ||
| Height | mm | 1450 | 1500 | 1700 | 1750 | 1800 | 2250 | 2300 | ||
| Weight | kg | 500 | 600 | 800 | 1100 | 1300 | 1900 | 2300 | ||
| Oil index after purification | Breakdown voltage | kV | ≥75 (Spherical electrodes) | |||||||
| Water content | ppm | ≤5 | ||||||||
| Gas content | % | ≤0.1 | ||||||||
| Filtering accuracy | micron | 1 | ||||||||
* Please inquire us for other flow rates or types.
* The machine size and weight will change slightly due to different configurations.The machine size and weight will change slightly due to different configurations.
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| Single-stage Vacuum Oil Treatment Plant | Double-stage Vacuum Oil Treatment Plant |
Double-stage Vacuum Oil Regeneration Plant |
• Optional Parts provided for selection:
a) Fully automatic operation of the unit with PLC
control, controlled by easy user interface. Touch panel for
easy operation placed on the electrical cabinet.
b) Digital oil flow meter (oil flow counter) to display both the
total flow and instantaneous flow.
c) Digital moisture content meter (hygrometer)
to keep testing the ppm of electrical transformer oil.
d) Transformer evacuation function can be
integrated into this oil filtration plant if required.
e) Mobile trailer and
weather-proof canopy is recommended for outdoor service.
f) Other specific requirements if you have, we accept tailored
options.
• 12 months of quality guarantee for non-human damage.
• Lifelong maintenance and spare parts supply.
• Free training on operation, maintenance and troubleshooting at PureTech factory.
• Puretech engineers go to customer site for commissioning and training (payable service).
• Design accept user's customization.
