The ZANYO Enclosed Type Transformer Oil Filter Machine is designed for high-efficiency purification of insulation oils, including transformer, capacitor, switch, mutual inductor, and cable oil. Its enclosed structure improves safety while reducing exposure to dust and moisture. With a double-stage vacuum system, it lowers water content to below 3 ppm and enhances dielectric strength and flash point.

A multi-stage filtration system and advanced atomization remove solid impurities and dissolved gases efficiently. The integrated heating system ensures fast, uniform oil warming for smooth processing. PLC automation simplifies operation and provides safety features such as overpressure alarms, phase monitoring, and automatic bubble elimination.

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What is a transformer oil filter machine?

The Transformer Oil Filter Machine is designed to purify and restore insulating oil in transformers, capacitors, switchgear, and other high-voltage equipment. It removes moisture, gases, and solid impurities, helping maintain the oil’s dielectric strength and insulation performance.

Transformer Oil Filter Working Principle

Water dissolves in transformer oil until the oil internal pressure is balanced . If the pressure, temperature, and saturation which associated with the balance pressure are broken, transformer oil either overflows or absorbs moisture until get to a new balance under new conditions. For ZYD-II series Vacuum Transformer Oil Purifier, the working vacuum is less than 133pa, it can atomize oil into less than 50um, so it can quickly reduces moisture content to less than 3ppm.

Why Choose an Enclosed Type Transformer Oil Filter Machine?

  • Better Environmental Protection

    The enclosed structure prevents dust, rain, and moisture from entering the system, helping maintain stable oil purification performance in outdoor or industrial environments.

  • Higher Safety Level

    Sealed operation and protective doors reduce operator exposure to hot oil and electrical components, supporting safer and more reliable long-term use.

  • More Stable Purification Performance

    A closed chamber maintains consistent vacuum and temperature conditions, allowing efficient removal of water, gas, and impurities from transformer oil.

  • Improved Oil Quality Results

    High-vacuum dehydration and multi-stage filtration significantly improve dielectric strength and extend transformer service life.

  • Suitable for Demanding Sites

    Ideal for substations, power plants, and high-voltage transmission projects where clean operation and equipment reliability are essential.

Transformer Oil Purifier System Functions

System / Component Description
Design Structure Compact double-stage vacuum design for efficient insulation oil purification. Skid-mounted structure makes the machine convenient to move between substations or maintenance sites.
Technology Level Incorporates advanced oil purification technologies from global industry practices. Features high working vacuum, high purification efficiency, and high filtration precision.
Control System Equipped with control interlock protection, overpressure alarm, and phase sequence protection. Includes automatic pressure alarm, overload protection, constant temperature control, bubble elimination, and blowout prevention for stable long-term operation and unattended use.
Degassing and Dehydration System Advanced atomization system combined with a 3D separation tower and flash evaporation technology. Quickly removes moisture and gas by forming fine oil particles in a specially designed vacuum tank.
Oil Filtration System High-quality filter elements with multi-stage precision filtration. Effectively removes fine particles and contaminants. Primary filter can be cleaned and reused, reducing operating cost and avoiding secondary pollution.
Heating System High-efficiency carbon fiber heating elements provide fast and uniform heating. Designed for corrosion resistance, thermal stability, insulation reliability, and long service life.
Oil Transfer System Oil pumps are selected based on oil viscosity and condition. Special materials and performance curves prevent discharge gaps and acetylene generation, ensuring safe oil processing.
Transformer Oil Recycling System (Optional) Optional module removes carbon deposits caused by electrical arcs, restoring aged oil to near-new quality standards.

Applications of Fully Enclosed Transformer Oil Filter Machines

High-Voltage Transformers

Ideal for 110kV and above transformer oil purification, ensuring optimal insulation and extended service life.

Various Insulation Oils

Efficiently purifies transformer oil, capacitor oil, switchgear oil, mutual inductor oil, and cable oil.

Power Plants and Substations

Widely used for preventive maintenance and emergency oil treatment in industrial and utility sectors.

Industrial Manufacturing Facilities

Suitable for plants requiring clean insulation oil for large-scale electrical equipment.

Enclosed Doors Transformer Oil Machine Appearance

Enclosed Doors Appearance

Technical Parameters of Transformer Oil Filter Machine

Index Name unit 30 50 100 150 200 250 300
Flow Rate L/Min 30 50 100 150 200 250 300
Working Vacuum Pa ≤133
Working Pressure MPa ≤0.5
Temperature Range ℃ 20 ℃ ~ 60℃(68°F ~ 140°F)
Power Supply As per user’s option
Working Noise dB(A) ≤65
Heating Power Kw 24 30 60 90 125 136 151
Total Power Kw 27 35.5 68 105 135 148 168
Inlet(Outlet) mm Φ32 Φ25 Φ44 Φ50 Φ58 Φ60 Φ65
Weight kg 520 570 920 1000 1300 1800 2200
Dimension (L) mm 1550 1550 2000 2150 2250 2300 2450
Dimension (W) mm 1200 1200 1250 1300 1300 1350 1400
Dimension (H) mm 1750 1800 2150 2250 2250 2300 2350

How to Choose an Enclosed Type Transformer Oil Filter Machine

  • Oil Type and Viscosity: Ensure the machine supports transformer oil, capacitor oil, switchgear oil, and mutual inductor oil at your operating viscosity.

  • Transformer Voltage Level: High-voltage transformers (110kV+) need high-vacuum, precise filtration machines.

  • Purification Capacity: Match the flow rate and multi-stage filtration with your oil volume and maintenance schedule.

  • Vacuum and Filtration Technology: Look for advanced vacuum dehydration, degassing, and multi-stage filters for optimal moisture and impurity removal.

  • Safety and Automation: Features like automatic controls, overpressure protection, phase sequence monitoring, and interlocks ensure safe operation.

  • Mobility and Installation: Compact or skid-mounted designs are easier to move in substations or plants.

  • Optional and Custom Features: Consider PLC control, moisture sensors, BDV testers, oil recycling systems, and OEM customization for bulk orders.

  • Reliability and Maintenance: Durable construction, reusable filters, and corrosion-resistant heating systems reduce costs and extend service life.

Optional Configurations for Enclosed Type Transformer Oil Filter Machine

  • PLC Control System – Provides automated operation and intelligent monitoring.

  • Touch Screen Interface – User-friendly interface for easy control and parameter adjustment.

  • Moisture Sensor – Real-time detection of water content in oil.

  • BDV Oil Tester – Measures the breakdown voltage of transformer oil for quality assessment.

  • Enclosed Structure – Enhances safety and prevents contamination from dust or moisture.

  • Mobile Trailer – Facilitates easy transportation between sites.

  • Lighting System – For convenient operation in low-light environments.

  • Tool Box – Integrated storage for essential tools.

  • Customized Frame Design – OEM customization available to meet specific installation requirements.

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