Publications

Publications
GlobeCorePublications manufactures and supplies equipment for purification of transformer, industrial, turbine and other types of oils. GlobeCore oil recycling plants are convenient, practical and functional. Their operation is not accompanied by harmful emissions into atmosphere. In addition, they consume minimal power, helping to save on expenses.Oil filtration unit.

GlobeCore GmbH is one of the world leaders in industrial manufacturing. Products of GlobeCore are used in production of bitumen emulsions, transformer oil regeneration and purification, fuel blending, biodiesel production and emulsification of virtually any materials.

The head office is located in Oldenburg, Germany. Our systems have been supplied to and are successfully operated in 70 countries. A network of 17 dealers supports global sales and services.

September 21, 2017

Oil analysis; transformer oil tests

Why do I need an oil analysis? What are the oil quality standards? What equipment should I use to restore the parameters of used oil?

Power transformers are the main components of power plants, substations and other enterprises of the electric grid. The importance of transformers cannot be underestimated, as they transform electricity that drives the modern world of business and commerce.

Transformers, depending on their structure and applications, are able to...


September 14, 2017

Transformer Oil

Transformer oil is widely used as coolant, insulator and suppressor of the arc in electrical devices. The composition of transformer oil includes naphthenes, paraffins and aromatic hydrocarbons. The mass fraction of other components, as a rule, does not exceed 4-5% (for a fresh product).

Transformer oil operating performance

Performance of transformer oil is evaluated by the following parameters:

dielectric loss tangent. The sufficient dielectric strength of oil is ensurred through removal of water...

July 31, 2017

Three-Phase Transformer

Transformers and Three-Phase Transformer

Generator step-up (GSU) transformers represent the second largest capital investment in Reclamation power production—second only to generators. Reclamation has hundreds, perhaps thousands, of transformers, in addition to hundreds of large GSU transformers. Reclamation has transformers as small as a camera battery charger, about one-half the size of a coffee cup, to huge generator step-up transformers near the size of a small house. The total investment in transformers...


July 31, 2017

Oil immersed transformer composition and design features

Power transformers are the most important components of an electrical grid. The transformers differ by their cooling systems. Hence there are dry-type transformers and oil immersed transformers

Most of the transformers in service are oil immersed. Their tank with active part is filled with oil. The oil removes heat from hot parts and increases dielectric strength of insulation. Transformers with an air cooling system are called dry-type transformers. Usually they have...


July 31, 2017

Restore Oil in the energy industry

Industrial oils are widely used in the energy industry. They provide heat dissipation and insulation in power transformers, lubrication of bearings and gearboxes, heat dissipation in turbines of power plants. Power transformers get contaminated and oxidized and require restore oil.

How to Restore Oil?

Restore Oil and rejuvenates the original properties and parameters of oil that undergone a change during operation. The changes depend on the type of oil and its purpose....


July 26, 2017

Oil Treatment for hydraulic systems

Oil Treatment

Hydraulic equipment, its maintenance or repair is not cheap. Therefore, it is advisable to use preventive measures, and regular cleaning of hydraulic oil.

Where do your money go?

The main costs of hydraulic system operation are related to the following articles:

oil change; parts replacement; equipment repair.

In the first case, it is necessary to purchase fresh and utilize used oil. The second case of expenditure is usually a purchase and replacement of stationary filters,...


July 26, 2017

How Oil Recovery is carried out

Oil Recovery

To date, oil recovery occupies an important place in the environmental policy of every country. Petroleum products contaminated with various impurities (metal particles, water, dirt, oxidation products, etc.) significantly deteriorate and must be collected and recovered.

Oil recovery is re-use of oil, both for its original purpose and for other purposes. Below is the analysis of the most common ways of used oil recovery.

Ways of oil recovery

One of the most...


July 25, 2017

Oil Purifier from GlobeCore

An oil purifier is a device designed to remove harmful impurities (solid particles, water and gases) from oil.

Oil purifier: what was it like before?

At first large sedimentation tanks were used as oil purifiers. They stored contaminated oil for a period of time. Large impurities in oil under the influence of gravity gradually settled on the bottom of sedimentation tank. The top layer of oil was collected into another container. This...


July 25, 2017

Oil Recycling technologies

Oil Recycling technologies and ways of realization

Oil recycling is an important direction in handling mankind’s industrial waste. To make the existing ecological situation better, it is vitally important to organize a proper waste oil collection and delivery to specialized enterprises engaged in oil recycling.

What about waste oil?

Waste oil is mineral or synthetic oil that was in operation and is severely contaminated. Waste oils that can be managed are:

gear oils; engine oils; brake...

July 24, 2017

Oil Processing

Oil Processing methods and equipment

Oil processing is the best way to save money on purchasing new oil. Experience indicates that regular oil processing prolongs the life of oil and oil-filled equipment. Below we examine the basic ways of oil processing and oil treating equipment.

Oil processing by centrifugation

Historically, the first methods of oil processing were based on physical phenomena. One of the methods of processing liquids from suspended particles and water...


July 14, 2017

Oil reclamation

How to reclaim waste oil?

At this stage of technological progress, there is an urgent need for proper waste handling. Oil product waste, including used oils, is no exception.

Unfortunately, many countries still do not process industrial oils. Often waste oil is simply poured into reservoirs or soil, and at best – burned to obtain heat. Although, modern equipment reclaims oil, and also restores oil characteristics to the standard requirements. After treatment...


July 4, 2017

Transformer maintenance

Normal operation of electrical devices depends on regular maintenance. Transformer maintenance is a prerequisite for its reliable operation.

How often is it necessary to perform transformer maintenance? It is not easy to give a clear answer to this question, since it depends on the technical condition of the equipment and not two units are the same. The standards set a maximum interval of four years.

Stages of transformer maintenance

Transformer maintenance usually begins...


July 4, 2017

Oil maintenance of power transformers and hydraulic systems

Power transformers are at the base of the modern electric power industry. Their reliability influences a power supply to large industrial facilities and ordinary consumers. In this article, we will learn about transformer oil, which is an important part of transformer insulation system, and oil maintenance.

Let’s start with oil functions. Oil in transformer isolates active parts and removes heat, which is in excess in transformer during operation at elevated temperatures....


Laboratory oil filtration: motor, transformer, essential oil filtration. Small unit.

Laboratory unit for Vacuum transformer & essential oil filtration GlobeCore UVRL is designed for filtration and lightening of electrical insulation, turbine, industrial mineral oils. https://globecore.com
The viscosity of the filtered product at 50 С must not exceed 70 cSt, maximum moisture content no more than 200 g/ton.
Industrial oil can be filtered after removal of fuel, water, oxyacids, polycarbons and asphaltenes.

Oil...

July 30, 2015

Insulating oil lInfluences of Corrosive Sulfur on Copper Wires and Oil-Paper Insulation in Transformers

Insulating oil

Jian Li, Zhiman He, Lianwei Bao and Lijun Yang

State Key Laboratory of Power Transmission Equipment& System Security and New Technology,

College of Electrical Engineering, Chongqing University

Abstract: Oil-impregnated paper is widely used in power transmission equipment as a reliable insulation. However, copper sulphide deposition on oil-paper insulation can lead to insulation failures in power transformers. This paper presents the influences of copper sulfur corrosion and copper sulphide deposition on copper...


July 2, 2015

2.10 Autotransformers

Autotransformers

It is possible to obtain transformer action by means of a single coil, provided that there is a “tap connection” somewhere along the winding. Transformers having only one winding are called autotransformers, shown schematically in figure 9.

An autotransformer has the usual magnetic core but only one winding, which is common to both the primary and secondary circuits. The primary is always the portion of the winding connected to the AC...


July 1, 2015

2.11 Instrument Transformers

Instrument transformers (figure 10) are used for measuring and control purposes. They provide currents and voltages proportional to the primary, but there is less danger to instruments and personnel.

Figure 10 – Connections of Instrument Transformers

Those transformers used to step voltage down are known as potential transformers (PTs) and those used to step current down are known as current transformers (CTs).

The function of...


June 30, 2015

2.12 Potential Transformers

Potential transformers (figure 11) are used with voltmeters, wattmeters, watt-hour meters, power-factor meters, frequency meters, synchroscopes and synchronizing apparatus, protective and regulating relays, and undervoltage and overvoltage trip coils of circuit breakers. One potential transformer can be used for a number of instruments if the total current required by the instruments connected to the secondary winding does not exceed the transformer rating.

Potential transformers are usually rated 50 to 200 volt-amperes...


June 29, 2015

2.13 Current Transformers

Current Transformers

The primary of a current transformer typically has only one turn. This is not really a turn or wrap around the core but just a conductor or bus going through the “window.” The primary never has more than a very few turns, while the secondary may have a great many turns, depending upon how much the current must be stepped down. In most cases, the primary of a current...


2.14 Transformer Taps

Transformer Taps

Most power transformers have taps on either primary or secondary windings to vary the number of turns and, thus, the output voltage. The percentage of voltage change, above or below normal, between different tap positions varies in different transformers. In oil-cooled transformers, tap leads are brought to a tap changer, located beneath the oil inside the tank, or brought to an oil-filled tap changer, externally located. Taps on dry-type...


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обновлено: August 22, 2017 автором: dannik