Brochure Axicooler GB

8/22/2019 Brochure Axicooler GB

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Oil coolersfor powertransformers

Axicooler


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The power of air

Flkt Solyvent-Ventec has been in the ventilation business since 1919.Te company specializes in the design, manufacture and sale of industrial fansand oil coolers for power transformers.

Ongoing innovation in its products and production facilities, and new fanand oil cooler technologies have made Flkt Solyvent-Ventec the Centre ofExcellence in the group worldwide for industrial centrifugal fans.

A global sales network ensures that Flkt Solyvent-Ventec customers will

enjoy a close collaboration.

ISO 9001 certification of its Environmental and Quality Managementsystems provides evidence of its commitment to a global quality policy.


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Design

Te oil coolers are designed andmanufactured in our Research &Production Centre based in Meyzieu

(near Lyon). Te facility housesthe most modern and advancedproduction processes:

Laser cuttingWelding robotsAutomated paint lines...

Te oil coolers are exclusively adaptedto cooling the oil used in powertransformers. Tey are designed to run

under the most stringent operatingconditions:emperatureCorrosive atmospheresDust, sand, rain and snow.


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Description

1 - Tube stacks

Our finned tubes, without inner

tubulators, are made of eitheraluminium or copper, depending onthe corrosion risk.

Pressure rating:+ 350,000 Pa absolute

Depression rating:+ 100 Pa absolute

Te tubes are roller expanded on athick steel tube plate (15 or 20 mm).

Internal cleanliness

After expansion the inside of each tubeis visually inspected. After the tightness

test (described below), the oil cooler isrinsed with filtered transformer oil at65C, circulating at high speed for20 minutes. Te input and outputpipes of the oil cooler are thenhermetically sealed.

Tightness testEach oil cooler undergoes a tightnesstest with hot transformer oil (65C)circulating for 3 hours at a pressure of300,000 Pa absolute.

2 - ManifoldsMade of steel, they can be bolted or

welded to the tube plate with a boltedcover. Sealing is provided with a nitrileseal.

3 - Hook-upTe inlet/outlet pipes are fastened withflanges.

4 - Air supply plenum

Te air supply plenum consists of twothick sheet side-members that connectthe tube plates, and a fan supportsheet. Spring washers on the plate/side-member attachments allow thestacks to expand.

5 - Axial fan

Tis fan, which is part of our Axipal

BZI line, ensures the lowest soundlevels and high effi ciency. Te casing,which forms a bell mouth for suctionand a diffuser for blowing, minimizespressure drops. Te blower wire guardis compliant with international safetystandards.

MotorsCompliant with internationalstandards:

foot mounted, aluminium frame,IP 55, class F, drain hole at low point.

Tey are electrically isolated from the

fan casing.

6 - Filter wire guard

7 - Electricalconnection box

Metal box compliant withinternational standards (IP 55sealing). It receives the cables fromthe fan motors (and in some casesfrom the pump). It is equipped withterminal strips and stuffi ng glands forconnection of the power cables.

Coatings

Surfaces in contact with oilAfter SA 2.5 sandblasting:

1 coat of paint resistant totransformer oil

Tickness: 20 microns.

Outer surfaces(standard version)

After SA 2.5 sandblasting:One coat of rust-proofing primerOne finishing coatotal thickness: 125 microns (other

coatings may be defined according tothe environment or specific requests).

Nuts and boltsSteel with 200h salt spray coating, zincbased.

Fan wire guardStainless steel.

BZI MA710 to 1250

Plenum top(depends on fan)

Tie rod (dependson dimensions

Side member (x2)

Plenum end-piece (x2)

Manifold (x2)

Finned tubes


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Accessories

Motor pump

exclusively adapted to the circulation of

transformer oilmotor integrated in pump, ensuring veryhigh reliabilityoperating safety

Filter wire guardprotection against plant fragmentseasily removable for cleaning operations

Oil circulation indicatorcontact normally closed or openalarm if oil flow stops or is too weakno maintenance required

Electrical cabinetdesigned and built as per specifications


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Selection charts

Selection chart for 1 oil passage

= 40k

ambient = +30C

Selection chart for 3 oil passage = 40k ambient = +30C

Dissipated

power

kW

Dissipated

power

kW

Oil flow m3/h

Figure 2

Figure 1

Oil flow m3/h


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Oil cooler

On the selection charts, dissipated power P40 (kW) is given as a function of the oil flow Q (m3/h) (figures 1 and 2).

Dissipated powerTe dissipated power is given for an ambientair temperature of 30C and an atmosphericpressure of 760 mm HG.

Te mean oil temperature rise () used in thecalculation is 40K.

If the mean oil temperature rise is different( = ), the new dissipated power P of the oilcooler is as follows:P = P40 + k ( - 40).k is a coeffi cient that is specific to each coolant.Its value is given in the table in figure 4.

Te selection charts allow you to select the oilcooler to perfectly suit your needs.

Motor-driven fans

Te oil coolers proposed are equipped with 2 or3 motor-driven fans whose rotational speed is720 rpm with a 50 Hz/8-pole motor or a60 Hz/10-pole motor. Te characteristics of eachmotor-driven fan are presented in the table infigure 4.

Oil inlet/outlet

Te oil coolers proposed are designed for 1 or 3oil passages inside the tube stacks. Te oil inletand outlet can then be positioned, on request, onthe respective manifolds.Note: for oil coolers with 3 oil passages, theymust be positioned symmetrically relative to axis1 (see figure 3).

Oil cooler fasteningTe oil cooler can be operated horizontally orvertically. Te supporting devices are definedaccording to demand.

Pump

o be selected on demand.

Mechanical characteristicsFor each oil cooler, the oil capacity, weight(without oil) and main dimensions are shown inthe table in figure 4.

Acoustics

Te sound power level Lwt is mentioned for eachoil cooler in the table in Figure 4. It is either 81dB(A) or 84 dB(A), depending on the number of

fans (2 or 3) in the oil cooler.

Acoustic pressure level as

per IEC 551

Acoustic pressure level at 2 meters, as perIEC 551, is defined as follows:Lp2m (dB(A)) = Lwt - 10 log SS = effective area calculated as per IEC 551.

Mobile power stationsOn request, a specific design is proposed to

withstand the shocks and vibrations due toinstallation on board of a wagon on a roadtrailer.


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Technical data and dimensions

Oil coolers with 1 and 3 oil passages

2 FANS (R2) 3 FANS (R3)

INLET

INLET

OUTLET OUTLET

Axis 1

Axis 1

TYPEof

oil-coolerA (mm)

Motor-driven fan (50Hz / 60 Hz 415V)Coefficient K Acoustic power

Lwt dB(A)Weight (kg)Oil capacity (l)

Per motor-driven fan

Line power (kW) Line current (A)Starting

current (A)1 passage 3 passages

R2-33-40-38xGy 2300 800 160 1.1 3 10 4.6 4.5 81

R2-33-50-38xGy 2300 850 170 1.1 3 10 - 5.2 81

R2-33-60-38xGy 2300 900 180 1.1 3 10 5.5 5.5 81

R2-33-40-38xCy 3300 1000 260 1.1 3 10 6.0 6.0 81

R2-33-50-38xCy 3300 1100 270 1.1 3 10 6.7 6.7 81

R2-33-60-38xCy 3300 1200 280 1.1 3 10 7.1 7.2 81

R3-37-40-38xCy 3300 1100 270 1.1 3 10 7.6 7.4 84

R3-37-50-38xCy 3300 1200 280 1.1 3 10 8.7 8.5 84

R3-37-60-38xCy 3300 1300 290 1.1 3 10 8.9 9.0 84

R3-37-40-38xAy 3800 1500 340 1.1 3 10 8.6 8.1 84

R3-37-50-38xAy 3800 1600 350 1.1 3 10 9.2 9.6 84

R3-37-60-38xAy 3800 1700 360 1.1 3 10 10.0 10.2 84x = C: copper tubes /A: aluminium tubes y = H: horizontal position /V: vertical position

Figure 4

Figure 3


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Some leading projects

NUCLEAR

SOUNDPROOFING

100 MVA

Germany ABB TransformatorenSchorch

Argentina FaradayAustria VA Tech ElinBelgium PauwelsIvory Coast CIECroatiaSpain ABB TrafosurFrance EDF - Transport/Distribution/Production

EDF - UTOEDF - HydrauliqueFrance TransfoAlstom T&DJeumont Schneider

Hungary Ganz AnsaldoIndia Bharat Heavy ElectricalsIsrael ElcoItaly ABB Distribuzione

ABB TrafoMorocco Alcatel

Lyonnaise des Eaux CasablancaNorway ABB National TransformerPoland ABB EltaPortugal EfacecUnited Kingdom ABB Power T&D

VA Tech Peebles ElectricSweden ABB TransformersSwitzerland ABB SecheronTurkey AEG - ETI

ABB Elektrik SanayiUSA Waukesha Electric SystemsYugoslavia Minel


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AXICOOLER/E-

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Flkt Solyvent-Ventec14 3 , r ue de la Rpublique - B.P. 6 769882 Meyzieu Cedex Francet + 33 4 72 4 5 13 00 f + 33 4 72 4 5 13 [email protected]

The Flkt Woods company reserves the right to

modify the characteristics of the apparatus describedin this document at any time. The information

contained in this document is therefore not legallybinding. For all information, please contact the

company that sells the equipment in your country.

Documents

Brochure Axicooler GB