Globecore insulating oil clarification systems with Fuller’s Earth

Globecore insulating oil clarification systems with Fullers Earth
maggio 13, 2014

Insulating or Transformer Oil Market 2018 Forecasts and Analysis

Image for illustrative purpose

USA, Texas: has published ‘Insulating or Transformer Oil Market 2018 Forecasts and Analysis’ research.

Analysts forecast the global transformer oil market to grow at a CAGR of 9.10 % over the period 2013-2018.

The Report divides the global transformer oil market into three divisions: mineral-based transformer oil, bio-based transformer oil, and silicone-based transformer oil. These are type of products used to meet the demands of various end-user segments.


Globecore insulating oil clarification systems with Fullers Earth
maggio 6, 2014

How to buy reliability of the power equipment with the transformer oil?

Transformer oils have certain technical and chemical parameters. These parameters define the scope of oil application and use.

Dissipation factor is one of the most important indications of oil quality and is a measure of the oil’s dielectric strength. Aging causes oil to lose its functionality and poses a threat to operation of oil filled equipment. Dielectric strength testing is a safety concern and must never...

Globecore insulating oil clarification systems with Fullers Earth
maggio 6, 2014

Which kind of transformer oil to buy?

A great number of manufacturers and distributor of transformer oil operate in the international and national markets.

Transformer oils, a liquid for cooling and insulating power transformers and other high voltage gear, remain an indispensible part of power transmission and generation industry.

In scientific terms, transformer oil is a product of crude oil refining. The properties of transformer oil depend heavily on the quality and parameters...

Globecore insulating oil clarification systems with Fullers Earth
maggio 6, 2014

Quality Assurance: Methods of transformer oil testing

Quality of transformer oil is tested in several stages of its use. Regular control of the oil’s quality is a part of the process of servicing electric equipment. The main parameters of oil and its purity indicate transformer condition.

The ability of the oil to maintain its original properties during operation of electric equipment is referred to as oil stability. If the equipment has not defects...

Globecore insulating oil clarification systems with Fullers Earth
maggio 6, 2014

Classification of tests on new transformer oil

The conditions in which transformer oil is used in transformer, switches and other high voltage equipment are rather demanding on the quality and purity of the oil. In the process oil is heated by currents, contaminated by particles of solid insulation and chemical reactions with the internal surfaces of the equipment, solves water and gas from the outside. Each of these separately and all together significantly...

Globecore insulating oil clarification systems with Fullers Earth
maggio 6, 2014

Classification of transformer oil storage tanks

In power transformers and in electric equipment in general, oil is used for insulation of equipment and for cooling. Using certain types of oil for power systems is regulated by international and national legislation and standards. The purpose if to keep equipment and systems in good condition, which depends on some parameters and general condition of transformer oil.

Any business with uses oil is concerned with...

Methods of transformer oil purification

Transformer oil insulates energized parts and components of power transformers, acts as a coolant and protects solid insulation from moisture. Beside transformers, oil is used in switches, high voltage capacitors and power cables. In switches oil acts as an arc extinguisher.

In the process of transformer operation, the oil accumulates various contaminants, which adversely affect the oil’s functions. To restore them, the oil must be purified...

Expert opinion about the classes of the hydraulic oil purity

Reliable operation of hydraulic equipment, widely used in various industrial facilities, depends mostly on the quality of the internal cooling and lubrication oil. Such machines operate under heavy loads and sometimes in difficult conditions. Regular maintenance of industrial equipment allows to detect possible malfunction in a timely manner. Presence of solid particles in the oil quickly degrades the oil; among such particles 70-85% are quartz,  10...

Hydraulic oil purification and filtration service

In the process of manufacturing of hydraulic oils, certain production regulations are observed. Before the oil ships to the client, the oil’s quality and purity is guaranteed. However, when the oil is in transit from the manufacturer to the customer, it is impossible to avoid contamination of oil. The liquid accumulates insoluble solid particles, water and air. When the oil is in operation, its quantity further...

Operating hydraulic oil – what should we do next?

Cooling and purification of industrial oils is the basic requirement to extend the service life of any hydraulic system. Efficient cooling and purification solutions increase the reliability and life time of such systems, increasing profits in the long run. To protect equipment and components of hydraulic systems, the GlobeCore company, which operates in more than 70 countries in the field of oil purification industrial equipment, offers...

Globecore insulating oil clarification systems with Fullers Earth
aprile 17, 2014

The laws of hydraulic oil purification

Oils and other operating liquids, used as lubricants and coolants in various industrial equipment, are prone to degrade under the influence of elevated temperatures, pressures or flow. The functionality of oils depends on viscosity, oxidation stability and purity, lubrication capabilities, corrosion and emulsification. The difference of hydraulic oils from other oils is the relatively higher viscosity of the oil for high pressure hydraulic actuators....

Globecore insulating oil clarification systems with Fullers Earth
aprile 17, 2014

Transformer oil degassing as a part of comprehensive purification system

While operating expensive power equipment, such as compressors, turbines, hydraulic presses, heat exchangers and power transformers, unforeseen malfunctions will happen. In rare cases failures are caused by overvoltage of the grid or human mistake, since operation of power equipment is a safety issue. Equipment downtime, failures and malfunctions are most often caused by the problems of internal components or insulation. Oil of various kinds are used for servicing...

Using of the turbine oil: benefits and testing

Oil used in various industries are divided into various types and subtypes. Physical properties and chemical composition divide oil into classes and categories. Various industries require specific oil types.

There is a group of oils for the energy industry, which includes turbine, dielectric (transformer) and compressor oils. Specific requirements are applied to each of the categories.

Also, depending on oil type, moisture and gas content are...

Reincarnation of the hydraulic oil lifecycle

The lifecycle of hydraulic oil depends on several parameters which can extend or shorten the cycle. Some of these are viscosity, acidity and the amount of additives. Contaminating particles, free water, unfavorable operating conditions (temperature, loads and other conditions) all contribute to aging of oil.

Oxidation is further accelerated at temperatures exceeding 60C or in contact with some other materials. Presence of solid particles, especially larger...

Reclamation of oil

Oil reclamation today is a very interesting and important subject. Oils can be reclaimed in a number of ways by different equipment and to varying extent.

Oil reclamation equipment developed and built by GlobeCore varies widely in terms of applications and reclamation degree:

  • oil regeneration
  • heat and vacuum purification of oil,
  • purification of oil by adsorbents
  • drying of transformer windings,
  • dehydration of oil,
  • degassing of oil,
  • reactivation and preparation of sorbents, including full...

What is better "drought" or "rainy season" – the percentage of moisture in dry transformer oil

Transformer oil aging results in degradation of its properties. The aging process is accelerated by influence of water, air or contaminants. Moisture and air cause the oil to oxidize, which lowers it’s dielectric strength, causes sludge deposits on transformer internal insulation and damages the insulation by the acidic products of oil decay.

Water may be present in transformer oil in various states: solved, emulsified or free....

Tests and trials: sports, art or industry? Analyse of transformer oil purification.

Correct use of oil guarantees reliability of industrial equipment and prevention of failures. Transformer oil is a dielectric and a coolant. It also serves as arc extinguisher.

Transformer oil parameters degrade over time as the oil ages. Oil oxidation is mostly caused by external elements, such as water, air and heat. Aging of oil is indicated by its acidity, water reaction, sediment and sludge formation.


Globecore insulating oil clarification systems with Fullers Earth
aprile 15, 2014

Why do we use dry and clean transformer oil? Importance of transformer oil purification

Reliable operation of transformers is dependent on the condition of internal insulation. Transformers are insulated by liquid (oil) and solid (cellulose) insulation. Dielectric oil accounts for about 80% of the system’s dielectric strength. It is a very good dielectric, and it permeates cellulose insulation further increasing the dielectric strength of winding insulation material. Viscosity characterizes the oil’s cooling ability.

The oil must be protected from oxidation,...

Globecore insulating oil clarification systems with Fullers Earth

Technologies, Inc. Announces The Confirmation By DNV "Det Norske Veritas" GL Of Testing Results For The DSOX-15 Pre-Combustion Fuel Purification Technology.

Fort Lauderdale, Florida, Mar 13, 2014 (GLOBE NEWSWIRE via COMTEX) — Technologies Inc., (otcqb:SHPR) announces that DNV “Det Norske Veritas” GL has completed its report on the DSOX-15 Pre-Combustion Fuel Purification Technology. The testing was conducted at the Technologies facility in Fort Lauderdale and observed by DNV GL. The testing confirmed by DNV GL resulted in IFO380 marine fuel oil with a sulfur level of...

A patent from the past – Reactivable Fuller's Earth filtration system

Thousands of new technologies are developed in various fields every year.

In 2011 alone, the State department of intellectual property of China received 526.4 thousand applications, there were 503.6 thousand applications in the US, 342.6 thousand in Japan, 178.9 thousand in South Korea and 142.8 thousand in the EU.

In the 19th or even in the 20th century every invention was revolutionary, which meant a new stage of economic...

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Insulating oil, or, in other words, transformer oil, is a mineral based organic compound, which is usually used in transformers because of its chemical properties and dielectric strength. Since it is a cooling agent and insulating medium that protects your insulation paper, its functions are essential for proper transformer operation.

Your transformer oil purifier is no longer helping you with your used insulating oil? That’s no surprise. At some stage of your transformer life, around 15-20 years of transformer operation, oil purification is no longer effective. In this case you can replace the oil (which is a very common option) or use an insulating oil clarification system to regenerate it – which is a BETTER option.

Globecore insulating oil clarification systems with Fullers Earth

Insulating oil clarification systems with Fullers Earth provide a regeneration process that offers the following benefits:

  • Removes sludge and oxidation byproducts
  • Lowers the acid number
  • Clarifies the oil
  • Restores interfacial tension
  • Improves dissipation factor
  • Equipment is easy to mount and operate
  • Compatible with other transformer oil purification equipment of any capacity
  • Extends useful life of insulating oil

Globecore insulating oil clarification systems are filled with Fullers Earth. This is naturally occurring sorbent clay that easily adsorbs impurities from the oil. Thanks to its crystalline structure it can absorb large amounts of acidity and 25% of water.

The main advantage of application of Fullers Earth in insulating oil clarification systems is its high porosity – up to 125 m²/gram, this feature provides high level of adsorption of contaminants from oil.

Globecore insulating oil clarification systems with Fullers Earth are designed to provide the best solution for your company. The main elements of the system are: two tanks filled with Fullers Earth, filter, pallet collar. Each tank is a metallic cylinder with a hatch in the bottom, the top is closed by a lid.

There is a push button at the top of the vessel which serves to provide required density for the bulk material. The vessels are held upright by fixing devices. The cylinders may be turned over if the Fuller’s earth needs to be replaced. In the upper part there is a valve that keeps the material condensed. Tanks are maintained in vertical position by restrainers.

Average oil appearance

Globecore insulating oil clarification systems with Fullers Earth
Before regeneration
Globecore insulating oil clarification systems with Fullers Earth
After regeneration



Trial pattern

Before regeneration

After regeneration


Deemed by eye exploiting crossing light and room temperature for 100 mm thick oil

Turbid  brown fluid

Transparent sedimentless fluid to lack weighed particles

Acid number, mg КОН/g

IEC 296; ASTM D-664



Corroding sulfur

ISO 5662; ASTM D-1275



Breakdown voltage, kV

IEC 156; ASTM D-1816



Dielectric loss tangent for 90ºС

IEC 247; ASTM D-924



Interfacial tension, N/m, for 25ºС

ISO 6295; ASTM D-2285



Solid contaminants size, micron



Oxidizing stability:

Acid number, mg КОН/g

IEC 1125А; IEC 1125B; IP-307