Transformer Oil Purifier

Your Professional Transformer Oil Purifier Manufacturer & Supplier

Chongqing TOP Oil Purifier Co.,Ltd. is a professional manufacturer specializing in oil purification systems and analytical instrumentation, with integrated capabilities in research and development, precision manufacturing, and comprehensive technical support. The company supplies a full portfolio of industrial oil treatment and testing solutions—including transformer oil purifiers, turbine oil filtration systems, hydraulic oil processors, benchtop and field-deployable oil analyzers, and turnkey laboratory systems—serving the power generation, petrochemical, mining, shipbuilding, metallurgical, infrastructure, automotive, and rail sectors.

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Why Choose Us

Authoritative Certifications

We are certified with CE, ISO 9001 Quality Management System, and BV (Bureau Veritas). Every unit is strictly tested before shipment to ensure stable performance, safety, and compliance with international industrial standards.

Customization Capabilities

Based on deep experience with transformer oil, turbine oil, and hydraulic oil applications, we provide OEM service and customized solutions according to working conditions, industry requirements, and environmental standards. Our systems help improve purification efficiency, oil regeneration performance, and testing accuracy.

Professional Team

Our team covers R&D, mechanical design, production, quality control, and after-sales service. With over ten years of industry experience in key positions, we provide full technical support, including product selection, installation guidance, commissioning, and remote or on-site assistance.

Specification

Parameter		Unit	ZYB-A-20	ZYB-A -30	ZYB-A-50	ZYB-A -100	ZYB-A-150	ZYB-A-200
Flow rate		L/min	20	30	50	100	150	200
Flow Rate		L/H	1200	1800	3000	6000	9000	12000
Vacuum degree		Mpa	–0.06～–0.095
Vacuum pressure		Mpa	≤ 0.3
Temperature range		℃	10～ 80
Normal working hour		H	≥ 4000
Continuous working hour		H	150
working noise		dB(A)	≤60	≤70	≤72	≤75	≤80	≤80
Heating power		kW	18	24	30	45	60	72
Total power		kW	22	28	35	50	68	80
inlet(outlet) caliber		mm	Ø25	Ø25	Ø32	Ø42	Ø50	Ø50
Weight		kg	400	450	600	800	850	900
Size	L	mm	1500	1600	1600	1600	1600	1700
	W	mm	900	900	900	950	950	1000
	H	mm	1550	1650	1700	1700	1800	1900
Index after filtering	Breakdown voltage	kV	≥70
	Moisture content	PPM	≤5
	Gas content	%	0.1
	Impurity size	μm	≤1(customizable)
	Value β	%	96
	Acid value	mgKOH/g	≤0.03
	Dielectric loss factor.	tgδ(90℃)	≤0.001

Key Features of Transformer Oil Purifier

High Processing Capacity

Models available with processing rates from 600 liters/hour to 4,000 liters/hour.
Advanced Control Systems

PLC-based controls for automated operation and monitoring.
Modular Design

Allows for customization and easy maintenance.
Safety Systems

Includes alarms and interlocks to ensure safe operation.

Key Components of Transformer Oil Purifier

Filtration system

● Coarse filter
Function: Intercept larger particles in the oil (≥50 microns) to protect subsequent precision components.
Type: Metal mesh filter element, self-cleaning scraper filter.
● Fine filter
Function: Remove fine particles (1-10 microns) to ensure the cleanliness of oil products.
Type: Paper filter element, glass fiber filter element or polymer membrane filter element.
● Coalescing filter (optional)
Function: Gather tiny water droplets into large droplets for easy separation.

Vacuum system (core dehydration and degassing components)

● Vacuum pump
Function: Create a high vacuum environment (usually ≤0.1 kPa) to reduce the boiling point of water.
Type: Rotary vane vacuum pump, Roots vacuum pump (for large flow).
Vacuum separation tank (vacuum chamber)
Function: The oil is atomized or forms a thin film in the tank to accelerate the evaporation of water and gas.
Design: It is often equipped with a spray device or a packing layer to increase the surface area of the oil.
● Condenser
Function: Condensing the evaporated water vapor in the vacuum tank to prevent water vapor from entering the vacuum pump.
Type: Water-cooled or air-cooled condenser.
● Exhaust valve
Function: Exhaust the separated gas to maintain the vacuum degree of the system.

Heating system

● Electric heater/thermal oil heater
Function: Raise the oil temperature to 50-65℃ (avoid exceeding 70℃ to prevent oxidation).
Protection: Equipped with a temperature sensor and an overheating protection device.
● Temperature control system
Function: Accurately control the heating temperature, usually linked with PLC.

Oil circulation system

Function: Extract the oil to be treated from the transformer or oil tank.
Type: Gear pump, screw pump (suitable for high viscosity oil).
● Oil outlet pump
Function: Transport the purified oil back to the transformer or tank.
● Pipeline and valve
Material: Stainless steel or oil-resistant rubber to avoid contamination.
Key valve: Solenoid valve (automatic flow control), ball valve (manual adjustment).

Control system

● PLC/microcomputer controller
Function: Automatically control parameters such as temperature, vacuum, flow, etc.
● Monitoring instrument
Vacuum gauge: Display system vacuum.
Pressure gauge: Monitor filter element blockage (pressure difference alarm).
Moisture sensor (optional): Online detection of moisture content in oil.
● Protection device
Overload protection: Automatic shutdown when the motor is overcurrent.
Liquid level switch: Prevents the oil level in the vacuum tank from being too high.

Auxiliary components

Oil level gauge: Monitor the oil level in the vacuum tank.
Defoamer: Prevents the oil from bubbling and overflowing in the vacuum tank.
Mobile chassis: A base with wheels for easy equipment transportation (mobile oil purifier).

Working Process of Transformer Oil Purifier

Oil Inlet

The oil to be treated enters the heater after coarse filtration.

Heating

The oil temperature rises to the set value (such as 60℃).

Vacuum Separation

The hot oil is atomized in the vacuum tank, and the water and gas evaporate and are extracted.

Fine Filtration

The dehydrated oil passes through the fine filter to remove particles.

Oil Return

The purified oil is sent back to the transformer by the oil outlet pump.

Applications of Transformer Oil Purifier

Electrical Utilities

Maintenance of transformers in power generation, transmission, and distribution networks.

Industrial Manufacturing

Servicing transformers in factories, refineries, and processing plants.

Renewable Energy

Supporting wind farms and solar power installations.

Mining and Oil & Gas

Ensuring reliable power supply in remote and harsh environments.

Transportation

Maintenance of transformers in railway systems and other infrastructure.

Customization Services

To meet different transformer oil purification requirements, we provide customized transformer oil purifier solutions based on oil type (mineral oil or insulating oil), system configuration (vacuum dehydration, degassing, and filtration), processing capacity, mobility options (stationary or trailer-mounted), voltage standards, and automation level. For more information or technical support, please feel free to contact us.

Packaging and Shipping

Packaging	Export-standard wooden case
Transportation methods	Shipment can be arranged via sea freight (the primary method), rail transport, or air freight.

Our Certificate

FAQ

Q: How does a transformer oil purifier work?

A: The oil is first heated and then enters a vacuum chamber. Under vacuum conditions, moisture and gases are quickly separated from the oil. At the same time, multi-stage filters remove solid impurities, and the purified oil is discharged back into the system.

Q: What industries use transformer oil purifiers?

A: Power generation plants
Substations
Electrical grid maintenance
Industrial transformer manufacturing
Railway and mining power systems

Q: How often should transformer oil be purified?

A: It depends on operating conditions. In general, large power systems perform regular maintenance every 6–12 months, while heavily loaded or critical transformers may require more frequent oil treatment.

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.

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