Oil Purification Plants

REOIL Regeneration Systems  

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Index

History…………………………………………………………………………... 3

Oil Purification Plant…………………………………………………………. 6

Substantial Plant Characteristics………………………………………... 7

Supplements………………………………………………………………. 8

Type Outline and Selection Assistance…………………………………. 9

Measuring Equipment……………………………………………………10

REOIL Regeneration Systems…………………………………………….. 11

Oil Regeneration Unit Type, CRP3000…………………………………… 17

Measuring Device Type TranSCoM X3……………………………………19

Gas Content Measuring Unit VZ-212 A………………………………….. 23

Electric Resistivity on Oil Samples Measuring Unit VZ220A…………25

Moisture and Temperature Measuring Unit VZ230……………………. 28

Hot Oil Spray Plant Type HOS…………………………………………….. 30

Reference List……………………………………………………………….. 31

Micafluid AG Oil Purification System Südstrasse 1 CH-8952 Schlieren

Tel: +41 (0)44 739 44 66 Fax: +41 (0)44 739 44 68 E-Mail info@micafluid.ch Web www.micafluid.ch

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HISTORY Insulation oil purification and drying

plants for transformers

In the course of restructuration of the vacuum plants division of ABB Switzerland AG, Micafil, the newly formed company Micafluid AG took over the entire product line of oil purification plants in 2006 under a mutual agreement. Since all rights and technology were transferred as well, Micafluid was able to profit from a development and research back-ground of 95 years, on which Micafil had based their strong reputation.

First Micafil-oil purification plant 1913 A mobile oil purification plant leaving Micafil works around 1930

Today Micafluid AG stands in close cooperation with transformer manufacturers, power producers and distributors as well as with field servicing companies in order to develop new innovative solutions and technologies for the treatment of insulating fluids. As a recent example the combination of totally new measuring systems (TranSCoM X3) with advanced oil purification and drying technologies resulted from such cooperation.

Micafluid oil purification, regeneration and drying systems for transform-ers are designed for practical use in the field and in the shop, in which aspects of quality, economy and safety towards the environment have been taken into consideration. We have further several projects running for the complete automation of the oil purification on various transform-ers in distribution substations. Micafluid is working on projects for purifi-cation of related liquids, e.g. purification of old used oil, nutritional oil, thermal oil and other media. Yet, we expect the treatment and drying of transformer oil and other insulating liquids to remain our prime business.

Mobile Micafluidanlage bei AKW Temelin  

In order to provide for a long-term operational safety on power transformers, it will be of decisive importance to maintain the humidity content of the oil and the entire dielectric system as low as this is possible and economically justifiable. Worldwide investigations lead to conclusions that a higher percentage of the investigated power transformers operate with increased moisture content in the oil in the solid insulation. Depending on the total quantity of insulating materials, the operating tem-perature, service intervals, size, voltage rating and age of the transformer as well as the measured moisture content, users and service organisations must decide on the most appropriate technological approach for servicing the unit. Factors that in the end will influence any decision, such as available capital investment, drying efficiency of a system, required operating personnel, operating and maintenance costs, must carefully be taken into consideration before deciding on the appropriate purification and drying technology.

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The insulation of high voltage installations, very specifically of transformers, mainly consists of a paper/oil dielectric system. In order to provide for a long operational lifetime of these insulating media, these high voltage units are filled with purified oil and this oil will be treated in periodical intervals.

Purification and regeneration will increase the dielectric strength of the oil and the ageing process of the paper/oil system will be slowed down. Micafluid AG as experts in purification and regeneration of insulating fluids offer perfect solutions for a professional treatment of

The oil regeneration plant models REOIL combine the purification technology of the VOP plants with the Adsorption-regeneration technology, in which acidous and other ageing prod-ucts are adsorbed while streaming through Fullers earth columns. On top, the Micafluid RE-OIL plants are capable of automatically regenerate the saturated Fullers earth.

Both product lines (VOP and REOIL) are fully-automatically controlled and thus being able to work off-line (transformer not energized) as well as on-line (with the transformer being energized). Out of a total of well over 180 standard type oil purification plants that Micafluid has sold since taking over this product line, there are more than 30 on-line plants in service in countries all over the world.

VKW on-line-purification plant servicing an energized 145MVA

Power transformers are very important and expensive components in the chain of electrical power supply. They represent a high investment value.

In the wake of the liberalisation and deregulation of the European electrical power market, efficiency and safety in generation, transmission and distribution of electri-cal energy have gained utmost importance. In order to avoid severe supply short-ages through equipment failure, maintenance and servicing of transformers be-came a prime factor for securing a perfect and continuing power supply.

Line of Micafluid oil purifica on plants comprising models:  

VOP10   300‐1000lt/h    VOP120  4000‐12000lt/h 

VOP30   1000‐3000lt/h  VOP160  6000‐16000lt/h 

VOP60   2000‐6000lt/h  VOP200  8000‐20000lt/h     

VOP90   3000‐9000lt/h  VOP300  10000‐30000lt/h 

Regenerieranlagen     REOIL 5000‐9  /  REOIL 5000‐12 

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Process Description

Standard plants for the treatment of insulating oils, oil filling and drying electrical equipment, such as transfor-mers and switchgears. The oil to be treated is fed into the VOP plant by means of differential pressure. Through the electrical heater the oil is heated to the pre-selected temperature and direc-ted into the degassing phase. An automatic level control guarantees, at pre-selected flow-through, an optimised degassing of the insulating oils. By means of a frequency controlled feeding pump, the dewatered and degassed oil is transferred back into the transfomer through the fine filter column. Technical Characteristics

Singlre stage, air-cooled vacuum system Variable flow-through according to type, from 100 lt/h to 20‘000 lt/h Anti-Froth Control system in the degassing tank

(AFC-System) Automatic overflow safety device Variable degassing values PID-regulated Thyristor heating system Variable fine filter inserts Automatic indication for filter changes PLC controlled system Modular build-up Short delivery times

Special Application

In order to control the increased froth behaviour of the treated insulating oil, an automatic froth sur-veillance system is installed into the new degassing tank. During the treatment phase a special automa-tic process prevents an overflooding of vaccum pumps with insulating oil. All Micafluid Oil Purification Plants are designed for online treatment on energized transformer. Additio-nal safety aquipments (Z?) are needed. General Characteristics

Higher degassing and dewatering efficiency factor at a protective treating process. After treatment, the oil characteristics are vastly kept (light fractions, as well as chemical basis from the oil are not evacuated). The VOP plant is modular build-up and can be tech-nologically expanded, at any time, without additional modifications.

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Oil Heating

The oil to be treated is heated by means of an electricalli heated, PID controlled oil heater, which is brought to the required treating temperature. The heating ele-ments are place into welded-in protection tubes, separated from the oil. The horizon-tal position and generously dimensioned heating surface allow a careful heating-up of the oil.

Online Oil Measuring

A new measuring instrument for the determination of the oil quality at the in/outlet of the plant guarantees an optimal treating duration. Data is conti-nuously registered on a 6-channel recorder.

Degassing System

The degassing system has been optimised and expanded with an au-tomatic froth control. New is also the automatic level control, dependent on the adjusted flow-through rate. Excellent degassing values and su-perior oil quality are guaranteed.

 Filtration

A built-in pre-filter at the inlet of the VOP plant prtects the plant against coarse contamination

Fine filter cartridges with auto-matic control of dirtyness

The filter elements are made of special synthetic material and are non-hygroscope

Oil Feeding

Converying of oil in the degassing pha-se is carried out by means of differenti-al pressure. A frequency controlled feeding pump allows for variable oil flow-throughs. A specially developed automatic screen guarantees an even oil flow-through in the degassing pha-se. A photo electronical level sur-veillance contros the maximum admis-sible oil level in the degassing tank.

Vaccum Plant

For the evacuation of gasses, deve-loped in the degassing tank, only rotary slide vane vacuum pumps are now used. To achieve lower guarantee values only the suction capacity of the vacuum pump is increased.

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A large selection of supplements can be ordered together with the VOP plant. Supplements ordered at a later stage can be

easily installed into the plant without refitting. 

Special Plants

Regeneration / Fuller plants Cable oil treatment plants Silicon oil treatment plants Generator oil treatment plants Oil spray plants Online oil treatment on energized transformer

Special Plants

Z2 Water & gas content measuring device VZ 212 A Z6 By-pass system for heating and / or filtration Z9 Oil sampler connection piece Z10 Vacuum pump for transformer evacuation Z11 Signal device to mobile phone (GSM Modem) Z18 Roadworthy trailer with tarpaulin Z20 Spare parts for many years of plant operation

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1 Online treatment on energized transformers with Z?

2 Values prior to treating: water content 50 ppm, air conetnt 10 vol %, temperature 20°C

Remarks

These guarantee values are valid for the treatment of naphthenic based insulating oils with normal froth behaviour, under consideration of no additional air acceptance after oil treatment. Approx. Value of oil content in the transformers: 1/2 lt insulating oil per 1 kVA For unattendent operation additional safety equipments needed. 

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Mobile measuring equipment for a manifold of applications are used for estimating the insulation oil quality. The measuring equipment can be used for commonly known insulating oils. The simple and over years reliable and proven concept makes these installations maintenance and operational friendly. 

 

Water and Gas Conent Measuring Unit VZ 212 A

This measuring unit serves as a continuous automatic measuring of the water and gas content at the in/outlet of the oil plant. The measuring unit can only be used toghether with an oil plant. The evaluation of the gas blanket pressure in the mea-suring cell can be carried out manually by means of a break-even chart or auto-matically via a 6-channel digital recorder. Measuring range: water content 0.5-7 ppm / gas content 0.01-0.09 Vol %

VZ 220 A Tan Delta

Resistance measuring unit to determinate the tan & value Online resistance measuring unit to determinate the tan & value Measuring range: water content 0.5—50 ppm / gas content 0.01—2 Vol %

New VZ (Micavac)

Exact measuring of the specific water drainage (g/h*t) during the transformer drying in production and in the field. This measuring unit is independent and easy to operate.

Further Measuring Units

Water content measuring unit in accordance to Karl Fischer Break-down voltage measuring unit up to 75 kV Break-down voltage measuring unit up to 100 kV

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R E O I L

TRANSFORMER OIL REGENERATION TECHNOLOGY

In 1996, Ekofluid organization was established as an engineering and servicing firm with focus in transformer oil precessing fields.

Why „Oil Processing Technologies“? There are many fields where the different kinds of oils are used.

One of the biggest users of oils - power industry - in power and distribution transformers serve as huge market for some of these technologies.

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It is fact that the life of a transformer is the life of the insulation system. Knowing also what can happen

to service-aged transformer oil, the problem as whole can be put into one question:

What needs to be done?

It is known that the mineral oil in millions of transformers proveds:

delectric strength of insulation system

Efficient cooling

Protection of the transformer core from chemical attack

Prevention of the build-up of sludge in the transformer

When the properties of oil have changed - the oil can no longer perform - the continued operation of the

transformer will significantly reduce the life-time of the transformer insulation. Under such circumstances oil has to be changed or treated.

Treatment methods:

1. OIL PURIFICATION

In the process of Purification, water dirt and gases are removed from transformer oil. Regular

Purification will increase breakdown voltage (kV) to required level. Oil Purification is an effective

Preventive maintenance method.

2. OIL REGENERATION

When oil in transformer, due to deterioration,reaches a stage where purification is no longer efficient, oil

has to be changed or regenerated. Adsorption clay is the material most frequently used for regenerating

of oils. This is a naturally occurring clay with a huge adsorbent properties as a result of high surface

activity. Regeneration is the complete treatment of oil to like new condition. Regeneration of oil

„in atransformer“ is far more efficient than simple oil change. The total volume of oil is recirculated a

number of times thorough the regeneration plant and „flusching effect“ of transformer is achieved.

It is obvious that regeneration as complete oil treatment methos is the best technical solution to aged

transformer oil. Apart from this it is also highly cost effective in comparison to an old procedure of oil

change.

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WHAT DISTINGUISH EKOFLUID - REOIL TECHNOLOGY FROM

EXISTING DISPOSABLE ADSORPTION MATERIAL TECHNOLOGY

Both technologies use a naturally occurring mineral to regenerate transformer oil

Existing old technology will use adsorption clay only once - then it has to be disposed of, with oil and

contaminants trapped inside. So large quantities of adsorption clay are required and after regeneration

waste, in th form of oil clay saturate with contaminants, has to be taken away and be disposed of

Ekofluid technology is based on activated adsorption clay being permanently installed in regenration columns.

When clay, after certain time of Regeneration is no longer efficient “Readsorption“ will take place.

There is no need to remove clay from the plant. This unique system allows up to 300 readsorptions

of the activated adsorption clay before it has to be cheaply disposed of as a non-hazardous substance.

How is it possible? What is the menaing of “readsorption“?

As it was said, after certain time when regeneration is no longer efficient and clay is saturated ba

contaminants “special precedure - readsorbtion“ will bring activated clay to ist original state.

After comparing these two technologies there is an obvious advantage : Saturated clay by contaminants

does not have to be disposed of as a hazardous substance. This results in 300 times less consumption

of clay and above all, technology becomes environmentally friendly and higly cost effective.

Are there any disadvantages?

It may seem that rare usage in Euorope could bring hesitation to potential customers, on the contrary,

this makes the market much more attractive. This could be seen from the interest of leading

manufacturers oil treatment industry.

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In 1997, Mobile transformer oil regeneration plant “REOIL 4000“ was built for local market - Slovak Republic

In 2006, REOIL 4000-2, the second fully automated unit for transformer oil regeneration was put into operation. The mobile unit was set up for the markets of surrounding countries: the Czech Republic, Poland, Hungary and /or Austria.

In 2006, the Filoil 4000-S unit was built for the company “Západoslovenská energetika - OTC Hlohovec“. - West Slovakia Power Transmission Industry.

In 2006, the Filoil 4000-S unit was built for the company “Stredoslovenská energetika - Opravovňa transformátorov Rimavská Sobota”. - Central Slovakia Power Transmission Industry.

In 2007, the new REOIL 4000-S unit was built for “LATVENERGO” - Latvia Power Transmission Industry.

In 2009, the new REOIL 5000-9/12 unit was built for “RWE” - German Power Transmission Industry.

Micafluid / Ekofluid offers services in the following two basic areas so far:

Transformer oil regeneration Transformer oil filtration Ekofluid offers the construction and manufacture of the following custom-made units:

REOIL - Transformer oil regeneration VOP - Transformer oil filtration VPU - Double stage Vacuum system We believe that at Micafluid / Ekofluid we provided you with basic information’s of our technology and with your collaboration, hoping in successful project, to meet our mutual benefits. Andreas Gruber Ivan Kudela CEO Micafluid Switzerland CEO Ekofluid Bratislava

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TECHNICAL PART

EKOFLUID MOBILE TRANSFORMER OIL REGENERATION PLANT

 

The most effective method of transformer oil regeneration is on site and within transformer. The trailer - mounted mobile regeneration plant has been designed specifically for on-site use to completely regenerate insulating oils. Although the unit was designed so that it could be moved from one transformer site to another , its versatility and efficiency has not been compromised by its mobility. Transformer oil can be regenerated on-site in energized or de-energized transformers. The unit incorporates option for regular oil purification - degassing and filtration - but its main application is in the removal of acidity,sludge and other soluble oil decay products while leaving the oil in the quality exceeding requirements of international standards for new transformer oil.The concept of oil regeneration on-site is highly cost effective. There is no need to bring fresh adsorption clay and remove quantities of oily saturated clay away from site.Plants control system offers the highest standard of safety and reliability. Since regeneration is done on-site and within a particular transformer , the chances of spillage of oil during oil change and oil transport are eliminated. Ekofluid`s continuous oil regeneration process is environmentally safe.

BASIC TECHNICAL DATA

Electrical supply : 380 / 420 V 3 - ph 50 Hz Effluent : Air & neutral gases Inlet filter : 30 micron porosity nominally rated Fine filter : 0.5 micron porosity nominally rated Electric heater : Utilized low watt density heater ( 1.7 watt/sqcm) with total capacity of 80 kW Clay treatment : Total of 1 500 kg of Fullers Earth within percolation filters providing "Readsorb process" Plant control : Reoil system is controlled by Programmable Logic Controller (PLC) and interfaced with a

Supervisory Control and Data Acquisition (SCADA) computer system. Due to used computer systems two operators only are required for set-up. Once the system is engaged only one operator is required to monitor the system.

 

 

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GUARANTEED PERFORMANCES OF REGENERATED OIL IEC Limits After Regeneration --------------------------------------------------------- Electric Strength IEC 156 30 kV 80 kV Water Content IEC 733 30 ppm 5 ppm Neutralization number IEC 296 0,03 mg KOH/g 0,03 mg KOH/g Dielectric Dissipation Factor @ 90 C IEC 247 0.005 0.003 Interfacial Tension ISO 6295 40 mN/m 45 mN/m PERFORMANCE OF PLANT AND ECONOMICAL GUIDE Plant efficiency : 5 000 L of regenerated oil per each reactivation ( ~ 5 000 L per day ) Plant capacity per year : 900 000 L Estimated practical use of plant per year : 500 000 L Estimated price of regenerated transformer oil : 0.7 - 0.8 EURO / L ( price of new transformer oil : ~1,5 – 2 EURO / L )

 

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OIL REGENERATION UNIT TPYE, CRP3000  

 

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Working principle The fuller and inhibition plant type CRP-3000 is a regeneration plant, which is used together with an oil treatment plant of adequate design and capacity. Its inflow is taken immediately after the oil heater and the regenerated oil is directed back into the oil treatment plant right before the fine filter. Between the two connections (in-flow and return flow) a manual stop valve will be incorporated. Connection between oil plant and regeneration plant via flexible hoses. During treatment, a part of the treated oil (3000 lt/h) flows over two fuller's tanks switched in parallel, whilst the rest flows directly to the fine filter over the added manual valve (stop cock). Oil feeding and heating-up is carried out by inlet gear pump and oil heater of the oil treatment plant respectively.

The final oil filtration is effectuated in the fine filter of the oil treatment plant, thus preventing fuller's earth particles from entering the oil. When the treatment and regeneration processes are completed, during the last oil pass, the oil treatment plant is switched over to the transformer to be filled and in addition the inhibition tank item 4 is switched parallel to the main oil circuit, so that the inhibitor may gradually be dissolved and conducted into the main oil volume. A part of the oil (800 lt/h) thus flows over two inhibition tanks items 4, and the remainder oil flows directly to the fine filter via the additionally incorporated manual valve. After several passes (between 10-15) the clay become saturated and must be changed.The two columns are movable by hydraulic unit for easy embty the clay. With optional vacuum system with drum heater new clay can be refilled. Dimension and Layout

Connection: Oil inlet pipe DN 32 Oil outlet pipe DN 32 Vacuum pipe DN 25 Dimension: Length 2'000 mm Wide 1’500 mm Heigth ca.2320 mm Weight empty ca 980kg Layout :

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Multispectral Ultrasound Online Transformer Oil

Measuring Device Type TranSCoM X3

The TranSCoM technology has been developed during the last years by the scientists of the partner of Micafluid AG, the new company Yucoya Energy Safety GmbH

With its outstanding multi-frequent ultrasound technology Yucoya Energy Safety GmbH is targeting at the pulsating heart of our industrialized world—the electrical grid. The company aims especially at the power transformers in the grid whose safe function-ing is a necessary precondition of a seamless supply of the modern society with electrical energy.

Fig.1: Measurement cell MF-100M with transducers MF-3-AL.

 The technology developed by Yucoya Energy Safety GmbH can be described as applied molecular acoustics. The meaning of this terminus is that ultrasonic waves are interacting with e.g. fluids on a molecular level. During a research period of over 15 years it could be found out by the scientists of Yucoya Energy Safety GmbH that the ultrasound velocity in a fluid is not a constant but slightly changing with frequency even for low frequencies (1-10 MHz). The multi-frequent ultrasound technology of Yucoya Energy Safety GmbH takes advantage from these changes by providing a frequency-dependent acoustical spectrum with a bundle of ult-rasound parameters for the fluid in real-time. Thus it is possible to „grasp“ fast reacting chemical processes for some dominant variables. On the other side it is also easily pos-sible to „grasp“ processes only moderately changing in time with a lot of variables involved. The ageing of transformer oils for instance is such a process. Consequently—the first real-world application of the molecular-acoustic technology of Yucoya Energy Safety GmbH is the detection of three relevant oil parameters, BDV, DDF and water content, in transformer oils by the system TranSCoM X3.

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As can be seen in Fig.2 TranSCoM X3 is the first part (the cornerstone) of the TranSCoM technology family, which will be built up in the direc-tion of three dimensions: Oil parameters - starting with 3 parameters for TranSCoM X at the termperature of 60°C as ameasurement device in combination with VOP oil purification plants from Micafluid Coverage of all transformer-relevant temperatures - From room temperature up to 90°C for all oil parameters Extension of functions- from mobile application as an infield measu-ring device (Mobile TranSCoM) to the fixed application at transformers and delivering the measurement results via Internet to net control

Fig.2: Embedding of TranSCoM X3 in the TranSCoM technology family.

What is TranSCoM X3?

„TranSCoM X3“ denotes Transformer – oil Safety Condition and Monitoring for three (3) transformer oil parameters. TranSCoM X3 is the first implementation of TranSCoM technology in a strictly industrial application – the purification and regene-ration of transformer oil by VOP plants from Micafluid AG. In this combination of technologies TranSCoM X3 is fulfilling the task of measuring the quality of the purified or regenerated oil during the corresponding VOP process. This task is carried out in a conti-nuous measuring mode, realtime and online.

The measurement principle of TranSCoM X3 is illustrated in Fig.3. The measured raw ultrasound data for at least 26 frequencies are analyzed by the HiPer TransQM measuring device. The results are characteristic ultrasound parameters of the oil for each frequency. These parameters like ult-rasound velocity, phase differences or attenuation are for-warded to an industrial PC (IPC) or LapTop with equivalent power and safety features. In this evaluation unit the cur-rently measured ultrasound parameters are compared to those, which were measured together with oil parameters in advance and were stored in a data base, which is the „core“ of TranSCoM X3. A sophisticated software (inference engi-ne) provides the linkage to the oil parameters, stored in the data base as well. As a result trends of each oil parameter are displayed either on the IPC or a separate screen em-bedded in the VOP from Micafluid AG.

Fig.3: Scheme of TranSCoM X3 components

The TranSCoM X3 system is a must for operation, prevention of failure, maintenance and repair on power transformers with a liquid insulation and cooling system.

Fig.4: The general measurement principle of TranSCoM X3.

 

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Embedding of TranSCoM X3 in VOP oil purification plants from Micafluid AG

The TranSCoM X3 measuring system can be applied at the same position in the scheme of the VOP, see Fig.5, where currently the VZ212A is working. TranSCoM X3 is as well measuring in a continuous oil flow mode, so its position can be the same as for VZ212A, i.e. Z2. All other identifiers have the same meaning as before, such that Z1 = optional vaccum pump

Z3 = flexible hoses with coupling

Z4 = extern feeding pump

Z5 = additional fine filter

and other accessories as described in the technical documentations of Micafluid AG.

In Fig. 5 the TranSCoM X3 measuring device is located at position Z2 with oil flow direction „IN“ from bottomside up to oil flow direc-tion „OUT“ at the topside of TranSCoM X3.

Fig. 5: Substantial VOP plant characteristics including TranSCoM X3 at position Z2.

Special features of oil measurements by TranSCoM X3

All measurements, carried out by TranSCoM X3 at 60°C, are by definition covering the intervals (the recommended action limits) „fair“, „good“ and „poor“, given in the standard IEC (CEI) 60422 (pages 55 and 57) for the categories of transformers O, A, D, B E for the following oil parameters, being measured on-line and provided by the TranSCoM X3 device as individual read-out values: absolute water content in ppm, recalculated to the amount of water (mg H20/kg oil) at 20°C as indicated in the standard IEC 60422 breakdown voltage (BDV) in kV, as indicated in the standard IEC 60422 dielectric dissipation factor (DDF) tan δ which is dimensionless relative humidity in % - equivalent to the amount of of active water (aw). The relative humidity is not included in the standard IEC 50422, but give a clear hint to the remaining possibility of the transformer oil being investigated to absorb further humidity (i.e. water). The results of measurement tests will be provided as soon as possible in the official offer presented by Micafluid AG according to availability. In this first and preliminary offer they could not just yet be included.

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Fig. 6: The acousitc fields

The acoustic fields of the new patented ultrasound ring-transducer MF-3-AL with 3 frequencies from a 0.5-10 MHz band, emitted in parallel. The acoustical fields are made visible by condensation due to pressure differences caused by the propagation of the ultrasonic waves measurement cell. The measurement cell MF100-M is constructed to withstand a maximum pres-sure of 5 bar (0.5 MPa). The leakage rate is less than 0.00025 mbar * ltr/s and thus provides the desi-red vacuum resistivity. MF100-M is manufactured with stainless steel 304 which is also used in phar-maceutical and nutrition industry. The measurement cell can work within a temperature range from –30°C to 130°C.

Fig. 7: Cut of MF-+-AL transducer with only one active element (piezo-ceramic plate).

A data base of previously measured oil and corresponding ultrasound parameter data represents the „core“ of „TranSCoM X3“. The ultrasound and oil parameters are intelligently connected via multivariate statistical methods and by means of neural networks adapted through fuzzy logic. This data base is according to the product develop-ment plan of Yucoya Energy Safety GmbH in continuous build-up in the direction of new oil parameters to be inves-tigated as well in the direction to cover a broader temperature range for each oil parameter as well for the investiga-tion of different oils or other insulating fluids like organig or synthetic esthers, see Fig. 2. Currently the data base build-up is focusing on Shell Diala D transformer oil.

The results are displayed on the display of the IPC (in a numerical mode for each single measurement) with a time-series represantation (trends) during the whole measuring time. Any part of the trend curve displayed over the time as x-axis can be zoomed out and investigated more intensively, see Fig. 8 and Fig.9.

Fig. 8: A simulation example of the preliminary GUI of TranSCoM X3 for BDV. Fig. 9: Preliminary GUI simulation for water content.

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VZ-212 A

Appareil de mesure de la teneur en gaz pour les huiles isolantes

Gas Content measuring unit for insulating oils

Gasgehaltsmesgerät für Isolieröle

Une assurance qualité optimale gràce à la mesure en continue et l‘enregistrement des valeurs de pression des gaz d‘absorption Ps [mbar] Consistant à la détermination simultanée et l‘entregistrement de la teneur en eau WA [ppm] et la teneur en air CI [Vol %] de l‘huile traitée Enregistreur à 6 marqueurs pur sauvegarder les valeurs mesurées D‘un emploi simple ne nécessitant aucune connaissance particulière. Mesures entièrement automatiques L‘opération compliquée de la prise d‘échantillon d‘huile est éliminée La mesure de teneur en eau reste extrêmement précise à faible valeur d‘humidité résiduelle Rapide estimation du nombre de la couleur d‘huile sur le cylindre en verre est possible Montage dans le future possible. Méthode de mesure ne nécessitant aucun produit chimique

Optimized quality assurance through continuous Online measuring and registration of gas absorption pressure Ps [mbar] Simultaneous determination and registration of the water content Wa [ppm] and air content CI [Vol %] in the oil 6-point recorder printing out the measured results Easy operation without special knowledge Completely automatic operation Elimination of complicated oil sampling Water measuring with highest exactness at low residual moisture Fast estimation of the oil basic colour number on glass cylinder possible Retrofit installation possible Maintenance free Environmental friendly measuring procedure as no chemicals required

Optimale Qualitätssicherung durch kontinuierliche Online-Messung und Registrierung des Begasungs- druckes Ps [mbar] Gleichzeitige Bestimmung und Registrierung des Wassergehaltes Wa [ppm] und Luftgehaltes CI [Vol %] im Öl 6-Punktschreiber zum Belegen der gemessenen Resultate Einfachste Bedienung ohne Spezial-kenntnisse Vollautomatischer Betrieb Umständliche Öl-Entnahme entfällt Wassermessung mit höchster Genauigkeit bei niedriger Restfeuchte Schnelle Abschätzung der Öl-Farbkennzahl am Glaszylinder möglich Auch nachträglicher Einbau möglich Wartungsfrei Umweltfreundliches Messverfahren, da keine Chemikalien notwendig

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VZ-212 A  

Appareil pur mesurer le contenu des gaz, type VZ-212 A Cet appareil de mesure sert à mesurer continuellement le contenue des gaz à l‘entrée et à la sortie de l‘huile de l‘installation. La régulationd e la cel-lule de mesure est enregistrée auto-matiquement sul l‘ensemble du champ de mesure afin qu‘après le processus aucune surveillance de la sonde de mesure soit nécessaire. L‘appareil de mesure peut être muni d‘un point de contact pour la surveillance de la pres-sion maximale des gaz. L‘exploitation de la pression des gaz se fait manuellement par l‘intermédiaire d‘un diagramme com-paratif. Champ de mesures: -contenu d‘eau 0.5-7 ppm *) -contenu d‘air 0.01-0.08 Vol %*) (jusqu‘à 2 % d‘après schéma) -pression des gaz 1-250 mbar -température l‘huile approx. 60°C -Débit de l‘huile approx. 200 l/h -Viscosité de l‘huile max. 50 cSt. *) Champ de mesure valable pour des huiles isolantes standard avec fac-teurs standard Ostwald (contenu d‘air 10 Vol. % ainsi que le contenu d‘humidité d‘approx. 50 pp/20°C). Température > 60°C sur commande Livraison: - Pression des gaz de la cellule de mesure avec cylindre en verre. - Vannes d‘entrée et sortie de l‘huile. - Sonde de mesure du vide avec ap pareil de signalisation installés dans l‘armoire de commande. - Diagramme comparatif. Option: (point de contact additionnel) Le point de contact de la pression des gaz (contact libre de puissance) peut être manufacturé par le client selon ses besoins.

Gas content measuring device, type VZ-212 A This measuring device is used for con-tinuous measurement of gas content at the inlet and oulet of the oil plant. Regulation of the measuring cell is automatically carried out, over the entire measuring range so that after adjustment time no supervision of the measuring probe is required. Alternatively the measuring device can be equipped with a switch point for supervision of the max. admissible gas blanket pressure. Evaluation of the gas blanket pres-sure, divided in gas and water pres-sure, is carried out manually, by me-ans of the supplied break-even chart. Measuring range: -Water content 0.5-7 ppm *) -Air content 0.01-0.08 Vol %*) (up to 2% according to schedule) -Gas blanket pressure 1-250 mbar -Oil temperature 60°C approx. -Oil flow-through 200 l/h approx. -Oil viscosity 50 cSt max. *) Measuring range is valid for stan-dard insulating oils with the well-known Ostwald factors. (Air content 10 Vol.%, as well as moisture content approx. 50 ppm/20°C). Temp. > 60°C on request. Scope of supply: - Gas blanket pressure measuring cell with glass cylinder - Oil inlet and outlet valves - Vacuum measruing probe with display device built into the switch cabinet - Comparison diagram Option: (additional switch point) The switch point for the gas blanket pressure (potential free contact) can be further processed by the customer according to own requirements.

Gasgehaltsmessgerät Typ VZ-212 A Das Messgerät dient zur kontinuierli-chen Messung des Gasgehaltes am Ein– und Austritt der Ölanlange. Die Regulierung der Messzelle erfolgt über den gesamten Messbereich automa-tisch, sodass nach der Einregelungs-zeit keine Überwachung der Mess-Sonde erforderlich ist. Alternativ kann das Messgerät mit einem Schaltpunkt für die Überwachung des max. zuläs-sigen Begasungsdruckes ausgerüstet werden. Die Auswertung des Begasungsdru-ckes erfolgt automatisch auf einen Drucker oder manuell, mittels mitgelie-fertem Vergleichsdiagramm bei beste-henden Anlagen. Messbereich: -Wassergehalt 0.5-7 ppm *) -Luftgehalt 0.01-0.08 Vol %*) (bis 2% gemäss Schema) -Begasungsdruck 1-250 mbar -Öltemperatur 60°C ca. -Öldurchsatz 200 l/h ca. -Ölviskosität 50 cSt max. *) Messbereich gilt für normale Isolier-öle mit bekanntem Ostwaldfaktor (Luftgehalt 10 Vol. % sowie Feuchte-gehalt ca. 50 ppm/20°C). Temp. > 60°C falls verlangt. Lieferumfang: - Begasungsdruck—Messzelle mit Glaszylinder - Ölein– und Austrittsventile - Vakuum-Mess-Sonde - Drucker oder Digitalanzeige - Vergleichsdiagramm Option: (zusätzlicher Schaltpunkt) Der Schaltpunkt für den Begasungs-druck (potentialfreier Kontakt) kann durch den Kunden nach eigenem Be-darf weiter verarbeitet werden.

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Instrument for Measuring the Electric Resistivity on Oil Samples

VZ220A

Introduction

The measuring instrument type VZ220A conforms to the new IEC 61620 standard

This insturment is based on the so-called „low amplitude, low frequency, alternate square wave method“ and permits accurate measurement of volume conductivity and relative permittivity. The measurement of volume conductivity in the range of 0.01 pS/m to 20‘000 pS/m allows the use of this instrument for quality assessment of high resistive liquids even at ambient temperature. The VZ220A works with low voltage and low current levels and represents no danger at all for its operators.

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Measuring method

The liquid in the test cell is excited with a low amplitude (30 V) low frequncy (0.5 Hz) alternate square wave voltage without any DC component (see figure 1).

Figure 1

By measuring the current through the liquid the capacitance C and the conductance G can be determined and the values of relative permittivity εr and volume conductivity σ are given according to the following equations: εr = C/Co

σ = εo.G/Co

The derived dissipation factor tanδ for a given frequency f can be determined according to the following equation: tanδ = G/C·2ттf

For determination of conductivity or tanδ, the alternate square wave method is, by far, more sensitive than the classic bridge method. It permits the determination of conductivity values down to 0.01 pS/m respectively tanδ values down to 1E-6 (at 50 Hz). This high sensitivity allows accurate measurements of conductivity and tanδ at low temperatures and consequently the characterization of liquids at room temperature can be carried out with confidence.

Test cell

The application of a square wave excitation voltage with low amplitude of only ±30 V permits the develop-ment of a test cell with simple design, easy to use and to clean. The compact test cell of the LCM-8716 is composed of only two parts, a container and an active part. Two coaxial electrodes (stainless steel) are attached on a cap (also stainless steel). This cap also supports two BNC connectors coupled to the two electrodes. The electrodes possess a clean, polished surface. The vessel and the active part can be cleaned according to procedures described in the appendix A. It is not possible and not necessary to disassemble the active part for cleaning purposes. The required amount of liquid for a test is about 210 ml. To reach this amount, fill in the liquid to be tested up to 23 mm from the top edge of the vessel. The temperature of the tested liquid can be determined by introducing the electronic thermometer in the cell through the cover orifice.

 

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Application

A typical application of VZ220A is the quality assessment of mineral oil used in high voltage apparatus e.g. power and instrument transformers, bushings, capacitors, etc. Several investigations have demonstrated that the conductivity of oil is influenced by impurities and ionic components, which are introduced in it. Therefore, the oil condutivity charaterizes well the quality of oil. Further, it has been shown that the moisture in oil has no significant influence on its conductivity.

The following values of conductivity given at ambient temperature are typical for a mineral oil in its different states of use. - New oil (laboratory quality) ≤ 0.05 pS/m - New oil (industrial quality) 0.05...0.1 pS/m - Light used oil in good condition 0.1...1.0 pS/m - Middle used oil in acceptable condition 1.0...5.0 pS/m - Heavily used oil in bad condition > 5.0 pS/m

Specifications

Electronic measuring instrument

conductivity measurement range 10-14 … 2x10-8 S/m on four ranges uncertainty of conductivity measurements ±1 digit ±1% of indicated value relative permittivity measurements 0.001 for relative permittivity up to 1.999 uncertainty of permittivity measurements ±1 digit ±0.2% of indicated value frequency of the measurement voltage 0.5 Hz amplitude of the measurement voltage ±30 V square wave with no dc part analogue outputs 2 V for 0 to 100% weight 2.6 kg size (width x depth x height in mm) 260 x 283 x 115 power supply in the field four batteries type AA power supply in the lab 100 … 240 Vac 50/60 Hz Operating temperature 0...35°C

Test cell required amount of liquid 210 ml vacuum capacitance ≈ 60 pF capacitance drift with temperature < 50 ppm/°C electrode gap 1.5 mm temperature measurement electronic thermometer weight 1.2 kg size (height x diameter in mm) 125 x 82

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Moisture and Temperature

Measuring Instrument

VZ230

General information Continuous on-line measurement of moisture in insulating oils

Ball valve installation—no need to shut down the process Incorporates Vaisala HUMICAP® Sensor—excellent lont-term stability Integrated data logging, with over four years of measured history LAN communication (RJ45 10/100Base-T) 2 additional ports for external sensors (not included) for 0...10VDC, 4...20mA or PT100 6 additional potentional free contacts (relays) for setpoint or alarm communication Power supply 230 VAC, 50/60Hz Shock proofed housing with internal cooling fan

Technical data built-in sensors

Water content measurement Probe (1) for oil inlet 0 … 1000 ppm (accuracy ±0.03) Probe (2) for oil outlet 0 … 100 ppm (accuracy ±0.03) Sensor type Vaisa HUMICAP® Operating evironment (for probes) Operating temperature -40 … +180°C (-40 … +356°F) Operating pressure 0 … 40 bar (0 … 580 psia) Mechanics Probe cable length Probe cable lengths 2 m, 5 m or 10 m Housing material (probes) G-AlSi 10 Mg (DIN 1725)

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  Technical data for additional sensors (not included)

Power supply voltage/current sensors Operating voltage 24 VDC Power consumption (max) 250 mA Analogue input range 0...1VDC, 0...10VDC, 0.20mA, 4...20mA Sensor types Pt100 (EN 60751) 2/3-wire, -200 to +100°C (accuracy 0.5°C) 2/3-wire, -200 to +850°C (accuracy 0.8°C)

Technical data for digital outputs Connectors 7-pole-plug (included) Relais contacts (6pc) Changeover (SPDT), 3A, 230VAC

Technical data for Ethernet connection Quantitiy 1 Protocols TCP, IP, HTTP, DHCP, SMTP, MODbusTCP Baud rate 10Mbits/sec, 100Mbits/sec Connector RJ45 Data format HTML

Technical data for digital outputs Connectors 7-pole-plug (included) Relais contacts (6pc) Changeover (SPDT), 3A, 230VAC

Technical data for screen (display) Resolution 320x240 pixels / 5.5“ Type/number of colors TFT color screen / 256 colors Brightness settings Adjustable on instrument Screen saver (switch-off display) waiting time (adjustable)

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HOT OIL SPRAY PLANT (TYPE HOS)

The Hot Oil Spray process allows for active part drying within a transformer’s own shell or tank. Owning to its simple but effective process, we can both decrease service time and costs while increasing flexibility within the field.

Micafluid’s HOS systems provide compact solutions that can be used to dry various transformers, ranging from 40 MVA up to 400 MVA with the possibility of being used in conjunction with LFH.

HOS in SIX steps

1. Setup of spray system

The number and location of the spray nozzles are selected to ensure sufficient oil flow and uniform spray coverage over the entire top area of the active part. The system should be mounted as close to the tank cover as possible.

2. Vacuum test

A leak test should be performed on the transformer tank. Any existing leaks should be sealed before proceeding to the next step.

3. Hot Oil Spray

While under vacuum, the transformer needs to be filled to the specified level. Oil circulation is then made between the pump, filter, heater and transformer tank.

After the temperature has reached the process setpoint, it has to be incremented and held at each step until reaching the maximum specified temperature.

The process end is then determined by the final parameter values (Time, Pressure & Temperature).

4. Oil drainage

Once Hot Oil Spray has been completed, all oil is drained from the trans former in to the “used” oil storage tank.

5. Vacuum drying

Fine vacuum has to be applied and held during the specified time, ensuring the extraction of any remaining moisture.

6. Oil impregnation

Once the vacuum drying cycle has been completed, oil filling can be started.

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Referenzliste / Liste de référence / Reference List Ölaufbereitungs- und Regenerieranlagen (System Micafil)

Installations de traitement et de régénération d`huile (System Micafil)

Oil Conditioning and Regenerating Plants (System Micafil)

1. Stationäre Oelaufbereitungsanlagen Installation de traitement d’huile Stationary Oil Treatment Plant 

5. Konventionelle Fulleranlagen (Regenerieranlagen) Installation de traitement d’huile de terre à Foulon Conventional Oil Regeneration Plant 

2. Mobile Oelaufbereitungsanlagen Installation de traitement d’huile mobile Mobile Oil Treatment Plant 3. Online Oelaufbereitungsanlagen 

6. Automatische Regenerieranlagen / Readsorption Installation de régénération automatique (terre à Foulon) Automatic Oil Regeneration and Readsorption Plant 7. Spezialanlagen 

Installation traitement d’huile sous tension Online Oil Treatment Plant 4. Vakuumpumpstände 

Installation de traitement d’huile application spéciale Special Oil Treatment Plant 

Installation pompe à vide pour l’évacuation de transformateurs Vacuum Pump System 

 

Ägypten / Egypte / Egypt    -ABB Egypt, Cairo  1 -El Sewedy Cables, Cairo  2 x 1 -Electro Tharwat, Cairo  1     

Australien / Australie / Australia   -WILSON Transformers Company, Glen Waverley  2 x 1     

Belarus / Bélarus / Belorussia   -JSC ECM, Minsk  1     

Brasilien / Brésil / Brazil   -Alstom Brazil LTDA, Itajubà  1 -Areva TD LTDA, Itajubà  3 x 1 -Orteng LTDA, Itajubà  1     

Bulgarien / Bulgarie / Bulgaria   -Hyundai, Sofia  3 x 1 -ABB Bulgaria, Sofia  1     

Chile / Chili / Chile   -ABB S.A., Nunoa-Santiago  2 -INGESAT S.A., Santiago de Chile  1 -Banco de Chile, Santiago de Chile  1     

China / Chine / China   -TBEA Shengyang Transofmer, Shenyang  5    3 x 7 -Boading Tianwei Boabian Electric Co. Ltd., Boa-ding City  4 x 1 

-Dalian Huandong Hudian IMP & EXP. Cop. Ltd, Zhongshan  2 x 7 

Deutschland / Allemangne / Germany   -Uni Stuttgart, Stuttgart  1 -Areva Ritz Messwandler Ludwigslust GmbH, Ludwigslust  2 x 1 

-Amprion GmbH, Dortmund  2 x 1 -Asotec GmbH, Düsseldorf  1 BEWAG AG & Co., Hanau-Hohe Tanne  1 -M. Nagel Engineering Ltd., Haunau-Hohe Tanne  1 

-Deutsches Elektronen-Synchrotron DESY, Ham- 1 

-ABB, Halle  1 -RWE, Wessel  7 -Renzmann und Grünewald, Monzingen  6    7 -ABB Mannheim, Mannheim  1 -EES Jürgen Scholz GmbH, Hamburg  2 -SGB Sächsisch-Bayrische Starkstrom-Gerätebau GmbH, Neumark  1 

  7 -GE Inspection Technologies, Ahrensburg  1 -Siemens, Nürnberg  6    7 -MR GmbH, Regensburg  7 -Pfisterer Kontaktsysteme GmbH, Winterbach  1     

Ecuador / Equateur / Ecuador   -ABB Ecuador S.A., Quito  1     Elfenbeinküste / Côte d’Ivoire / Ivory Coast 

 

-ABB Technology S.A., Abidjan  1     

Frankreich / France / France   -Saur Internationa, Saint-Quentin-Yvelines Cedex  1 -VATECH, Lyon  2 x 7 

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   Grossbritannien / Grande Bretagne / Great Britain 

 

-Great Man River Authority, 1 

  2     

Griechenland / Grèce / Greece       -ABB S.A., Metamorphossis  1     

Hong Kong   -CLP, Hong Kong  7     

Iran / Iran / Iran   -Iran Transfo Co. Zanjan  3 x 1    2    2 x 4    3 x 5    1 x 7 -Mapna Iran, Tehran  3 x 1 -Neku Niru Eng. Co. Inc.,Tehran  8 x 1     

Island / Islande / Iceland   -RST Net ehf, Hafnarfjordur  1     

Israel / Israël / Israel   -Von Roll Transformers ltd., Ramat Hasharon  4 x 1     

Italien / Italie / Italy   -ABB Trasmissione & Distribuzione Italia, Legnano  2    7 -ABB, Monselice  7 -Tamini Transformatori, Melegnano  2 x 1 -Verbano Transformatori S.r.l.  1     

Jordanien / Jordanie / Jordan   -CHEMICAL AND MINNING INDUSTRIES CO. LTD, Amman  5 x 3 

   

Kanada / Canada / Canada   -Texim Solutions, Quebec  1     

Kroatien / Croatie / Croatia   -Tectra, Zagreb  1 -Tectra, Tugare  3 x 1 -Koncar, Zagreb  3 x 1    7 -Radosevic Co. Ltd., Zagreb  1     

Kuwait / Kuwait / Kuwait   -United Steel Industrial Co., Kuwait  1     

Libyen / Libye / Libya   -GECOL, Tripoli  8 x 1     

Mexiko / Mexique / Mexico   -PROLEC GE INTERNACIONAL, Apodaca  1     

   

Norwegen / Norvège / Norway   -ABB, Drammen  3 -Statnet SF, Oslo  7     

Niederlande / Pays-Bas / Netherlands   -Gasel, Rotterdamm  2     

Österreich / Autriche / Austria   -ZTR Enesta Handelsgesellschaft GmbH, Linz  1 

-Voest-Alpine Industrieanlagenbau GmbH & Co, 1 

  3    5 -BAUR Prüf- und Messtechnik GmhH, Sulz  1    7 -Technische Universität Graz, Graz  1 -Siemens Transformers GmbH , Weiz  2 x 1    7 -STEWEAG-STEG GmbH, Graz  1 -Mohaupt High Voltage GmbH, Mieders  1 -VKW Netz AG, Bregenz  3 -VATECH Siemens, Wien  7 -Siemens AG, Wien  2    7 -VATECH HYDRO GmbH, Wien  1 -Siemens Transformers Austria GmbH, Linz  4 x 7     

Philippinen / Philippines / Philippine   -Boston Home, Quezon City  4 x 3     

Polen / Pologne / Poland   -Trans-Energo  1 -Energo-System, Rzeszow  7 -ABB, Warszawa  1 -ENERGOSEWIS S.A., Lubliniec  1 -ABB Sp. Z.o.o., Lodz  1     

Portugal / Portugal / Portugal   -Siemens S.A., Almargem do Bispo  7 -Efacec Energia S.A., S. Mameda de Infesta  20 x 1     

Rumänien / Roumanie / Romania   -Hidroelectrica, Curtea de Arges  2 -Electroputere S.A., Craiova  1 -SCANDO TRADING LTD, Bucharest  2 x 1    3 Retrasib S.A., Sibiu  1 -Energomontaj  3     

Russland / Russie / Russia   -ABB Electroisilit Bushing, Moskau  1 -Togliatti Transformator, Togliatti, Samara Region  2 x 1     

Saudi-Arabien / Arabie Saoudite / Saudi  

-Khalid Trading Est., Jeddah  1         

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Schweiz / Suisse / Switzerland   -EWZ Schweiz, Zürich  1 -ABB Sècheron S.A., Meyrin-Zimeysa  2 x 1    2    4 -BKW FMB Energie AG, Ostermundigen  7 -NOK, Döttingen  7 -Tectra AG, Bubikon  2 -Pfiffner Messwandler, Hirschthal  4 x 1 -CKW, Luzern  1 -SIG Services Industriels de Genève, Genf  7    5 -Föllinger  7 -Brugg Kabel AG, Brugg  7 -Huser & Peyer, Busswil  2 -ABB Schweiz AG Dubal, Baden  2 -ABB Schweiz AG Sohar, Baden  2 -SBB Energie, Kerzers  5    2 x 7 -Trafopower AG, Schönenwerd  7 -AXPO, Doettingen  1 -ABB Schweiz AG, Zürich  5 -Rauscher & Stoecklin AG  5 -Gebrüder Meier, Regensdorf  7     

Serbien / Serbie / Serbia   -Valfrigo, Kosovo  3 -Tectra Belgrade, Beograd  1    7     

Singapur / Singapour / Singapore   -SGB Starkstrom PTE LTD, Singapore  7     

Slovakische Republik / République Slo-  

-Etra 33, Ljubljana  1     Spanien / Espagne / Spain   -Alcoa Spain, La Coruna  2 x 1 -Abencor Suministros S.A., Sevilla  2 x 1 -ABB Cordoba, Cordoba  7 -A.G.R. Rymoil, Poligono Logrezana, s/n - La Granda 

5 

  3 x 1 -Alkargo, Mungia  1 -Fatsur, S.L. Polg. Ind.  5 -Guerin S.A., Barcelona  1     

Taiwan / Taïwan / Taiwan   -Flourshing Enterprise Co. Ltd., Taipei  1     

Thailand / Thailande / Thailand   -ABB Limited Shell, Bangkok  1    7 -Unipower Shell, Bangkok  1     

   

   

   

Tschechische Republik / Rép. Tcheque /  

-CEZ, Prague 4  2 -D5 Trinec, Trinec  1     

Türkei / Turquie / Turkey   -BEST, Balikesir  3 x 1    7 

-Y.G. TRAFO MONTAJ TEST BAKIM, 1 

-ABB Elektrik Sanayi,Kartal Istanbul  1 -AREVA T&D Enerji Endüstrisi A.S., Gebze  1 -GES Genel Elektrik Sistemleri, Yapim ve  7 

-SEM TRANSFORMATOR A.S., 1 

-AZP Transformator, Ankara  1 -ETI Alüminyum, Istanbul  1 -Iskenderun Demir ve Celik A.S. / Isdemir  1 -Schneider Electric, Izmir  1     

USA / Etats-Unis d’Amérique / USA   -Howard Industries Inc., Laurel  1 -Kuhlmann Electric, Crystal Springs  2 x 1 -Efacec Power Transformers Inc., South Rincon  3 x 1     Venezuela / Vénézuela / Venezuela   -ABB, Caracas  2     Vereinigte Arabische Emirate / Etats des États des émirates arabes unis / United Arab Emirates 

 

-Mapna Internationa FZE, Dubai  1 -HARIS Al-Afaq, Dubai  1 -AYT International L.L.C., Dubai  3 -ABB Industries L.L.C., Dubai  1 -Siemens L.L.C., Dubai  1     Yugoslawien / Yougoslavie / Yugoslavia   -Tectra  1    7 

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Micafluid is the leading manufacturer of oil purification systems and as such offers a decisive contribution to maximum quality of insulating fluids.

Micafluid AG Oil Purification System Südstrasse 1 CH-8952 Schlieren

Tel: +41 (0)44 739 44 66 Fax: +41 (0)44 739 44 68 E-Mail info@micafluid.ch Web www.micafluid.ch

Location of Micafluid Oil purification Systems

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