Intelligent EC fans for greater efficiency in cooling towers.Aerodynamically optimized, continuously adjustable, low-maintenance: EC fans ensure energy-saving, reliable and economical cooling tower operation.

Our systems expertise: As experts in advanced motor technology, electronics and aerodynamics, we provide ideal system solutions from a single source.

The ebm-papst spirit of invention: Our 600 engineers and techni-cians will develop a solution that precisely suits your needs.

Our lead in technology: With our GreenTech EC technology, we set standards worldwide. And our lead is your competitive advantage.

About ebm-papst.

Proximity to our customers: At 49 sales offices worldwide.

Our standard of quality: Our quality management is uncompromis-ing, at every step in every process.

Our sustainable approach: We assume responsibility with our energy- saving products, environmentally friendly processes, and social commitment.

As a leading supplier of ventilation and drive engineering technology, ebm-papst is a highly respected engineering partner in many industries. With over 15,000 different products, we can provide the right solution for almost any application. And all our fans and drives are reliable, quiet-running and energy-efficient.

2

The effective answer to exacting demands.Fans are amongst the most vital components of mechanical draft cooling towers. They play a crucial role in effectively dissipating heat to the surrounding atmosphere in process and plant cooling applica-tions, and also help keep conditions in manufacturing facilities and data centers, as well as in large complexes such as hotels and super-markets, at comfortable levels.

Built to last in a harsh environment.Cooling towers are required to provide optimum, efficient cooling. Even under the toughest conditions. Fans from ebm-papst can with-stand severe environmental factors and corrosion. Their robust de-sign is not affected by both high humidity levels or rapid changes in temperature.

High air flow rates, quiet operation.On account of the dimensions involved in cooling towers, the fans used do not only have to be robust, they also have to supply high air flow rates. And they have to run as quietly as possible. After all, cool-ing towers are often to be found in industrial, mixed-use, and even urban areas.

Effortless compliance with stringent efficiency directives.The greatest challenge currently facing cooling towers is, however, to meet the minimum requirements in energy efficiency. Fan solu-tions from ebm-papst give cooling tower manufacturers and opera-tors the support they need - in the shape of perfect system technolo-gy and certification standards far exceeding those demanded by law.

Ready to deal with all requirements.

There are various options for the air supply in mechanical draft cooling towers, depending on their design. Axial fans offer excellent perfor-mance with high air flow rates and moderate pressures. Centrifugal fans are designed to overcome high pressures with a limited air flow rate. The good news: Regardless of whether you opt for induced or forced draft, ebm-papst can always provide you with an efficient and reliable solution for your purposes.

With this type, the fans are located in the air outlet of the cooling tower. The air is drawn or sucked through the cooling tower by an axial fan.

With this type, the fans are located in the air inlet of the cooling tower. Ambient air is forced through the cooling tower by centrifugal fans.

Inducted Draft. Forced Draft.

The ideal fan solution for every type of cooling tower.

3

With the GreenTech EC solution from ebm-papst, you get

… a complete system consisting of motor, impeller and integrated

variable frequency drive. All from one source and ready configured.

That means no extra components and simple commissioning. In

addition, you can be sure that all legal requirements have been fulfilled

in line with the Ecodesign Directive for fans. Standardised measure-

ments and clear documentation are available.

… maximum efficiency. This is guaranteed by the GreenTech EC

motor in combination with the ideally matched impeller, grille, and

nozzle.

... an integrated derating function. Optimum protection against

overtemperature and mechanical overload.

This is the old, familiar solution

Conventional fans with variable frequency drive

Cont

rol

VSD

HVAC

Variable frequency drive

Motor protection

Sinusoidal filterGrounding

Line supply

Line supply

Shielded cables

Cont

rol

VSD

HVAC

Variable frequency drive

Motor protection

Sinusoidal filterGrounding

Line supply

Line supply

Shielded cables

GreenTech EC fan

Systematic efficiency. It is not just the efficiency of the individual components that matters, but rather the result of their interaction. And this is where EC fans from ebm-papst outshine conventional AC technology with their ex-cellent performance, resulting from a perfect combination of impel-ler, motor and electronics. A major contribution to this comes from the GreenTech EC motor with external rotor.

Its efficiency levels far surpass the requirements of efficiency class IE4, without even using problematic rare-earth magnets. The inte-grated control electronics guarantee compact dimensions, as well as ease of installation and commissioning. So there are plenty of argu-ments in favor of GreenTech EC technology.

EC fans for top cooling tower performance.

Sustainable and resource-preserving.The ebm-papst GreenTech concept takes environmental protection, the sustainability this implies, and economical operation as one ho-listic approach. It is firmly anchored in the ebm-papst philosophy and business principles and covers the entire life cycle. ebm-papst is committed to recycling, waste avoidance and the use of ecological

materials, whilst making every effort to reduce emissions and energy consumption and so increase efficiency. Not without success! As clearly shown by our EC fans, for example. These are equipped with highly efficient GreenTech EC motors operating within a continuous-ly adjustable speed range or with linear interface control. With their long service life, EC fans also epitomize the concept of sustainability.

4

Benefits at a glance:

Successfully tested under extreme conditions.

Fan solutions from ebm-papst offer maximum operational reliability. Because each of them has to undergo voluntary, rigorous testing:

Once a fan solution has successfully passed all the intensive checks, it is given H2+C environmental classification by ebm-papst. Together with great reliability, robustness and efficiency of the products, this is the best indication that the devices are excellently designed and ideally suited to long-term operation in cooling towers. These tests were successfully passed by all the following product families.

Shock and vibration testsTesting with shock and vibration loads is based on various different standards depending on customer requirements. Shock testing is conducted primarily in accordance with DIN EN 60068-2-27 and DIN EN 60068-2-29, whereas vibration testing is mainly based on DIN EN 60068-2-64 and DIN EN 61373. Corrosion testThis test is designed to check the operation and electrical safety of all device components. It simulates exposure to an extremely corro-sive environment over a long period of time.

Highly Accelerated Lifetime Test (HALT)Under test conditions with thermal cycles between -100 °C and +200 °C with a rate of rise of 70 K/min and simultaneous shock load-ing of 50 g RMA, the HALT reveals weaknesses during the develop-ment phase.

Thermal change rain testThe fans are directly exposed to water and temperatures of -10 °C to +60 °C over a period of six months. Each device has to undergo a to-tal of 900 test cycles.

Eurovent standards are surpassed in the extreme.ebm-papst axial and centrifugal fans easily meet the minimum requirements of the Eurovent document 9/12 - 2016 "Performance Efficiency Standard for Evaporative Cooling Equipment".

EfficiencyLow power consumption High air performance

Power densityMaterial savings Boost function possible

Controllability Demand-controlled ventilation

Noise reductionReducing noise emissions

Plug & playEasy installation and commissioning

CompactnessLow space requirement

SustainabilityResource conservation during development, production and commisioning

MonitoringQuery of operating data and status

5

Lots of fans, lots of advantages: FanGrid technology from ebm-papst.

Constant performance following simple plug & play installation.To enhance reliability and ensure a constant air flow through the cooling tower, multiple fans can be operated in parallel in a FanGrid. This offers a number of advantages: For one, high-volume air flows are no problem.

If one of the devices has to be serviced, the others make up for the missing air quantity immediately and without interruption, so that the cooling tower continues to operate with exactly the same cooling capacity. What's more: FanGrid solutions are surprisingly easy to in-

stall - as you would expect from ebm-papst, they come as easy-to-fit plug & play solution rather than you being forced to connect separate motors, fan blades and variable frequency drives. Straight forward monitoring and control of the FanGrid solutions is possible with MODBUS RTU. Maintenance then does not have to be performed at regular intervals, but rather only when servicing is required. This makes it easier to plan the work involved.

Space-saving and economical.Cooling towers that operate with a single, large fan are often very tall. This is due to the fact that the fan and spray nozzles have to be kept a good distance apart to stop water being drawn into the fan.

The use of an ebm-papst FanGrid with the same output thus makes it possible to significantly reduce the height of the cooling tower. This saves material for the cooling tower wall and housing, and also produces a more balanced flow of air through the cooling tower than in the case of a single fan. Killing two birds with one stone.

Use of one large fan. Use of a FanGrid from ebm-papst.

Ove

rall

heig

ht

Ove

rall

heig

ht

6

3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 4.3 4.4

Lots of fans, lots of advantages: FanGrid technology from ebm-papst.

– Bulky design due to heavy motor and transmission. – Poor flow of air in corners. – More vibration due to large motor and mechanical system.

Disadvantages of one large fan. Advantages of multiple small fans.

– Even flow of air through all components. – Optimum structural design thanks to uniform weight distribution. – No downtimes for servicing.

Clear facts, true values: ebm-papst FanScout, your reliable way to find the right fan.Exact dimensioning and calculation is easy and straightforward with the ebm-papst FanScout software. Find the best solution based on factors such as operating characteristics, air performance, operating time and installation space, or determine life cycle costs in advance. Amongst other things, the FanScout offers a unique selection function for FanGrids. This makes it possible to work out the most economical fan combination from the ebm-papst range.

The qualified technical experts from the worldwide ebm-papst service team will gladly answer any questions you may have.

Air flow through cooling tower in m/s

7

Continuously adjustable controllability.To this day, it is standard practice to either operate individual cooling tower fans at full capacity or switch them off altogether, depending on the output required. From the point of view of the installation as a whole this is not an efficient way of working. Variable control is far better when using GreenTech EC fans. They permit continuous speed adjustment whilst maintaining a high level of efficiency. EC technology means that all fans can remain in operation.

Nevertheless, the system requires less energy and generates less noise. Demand-based partial-load operation also has a positive ef-fect on the service life of the fans. All-in-all, the entire cooling tower can thus be operated far more economically than in the past through the use of EC technology.

The diagrams below illustrate the potential energy savings and noise reduction in a direct comparison of on/off operation and continuous speed adjustment.

Low energy consumption:In the case of on/off operation, air performance is reduced by 50% when half of the fans are switched off. With continuous speed adjustment for all the fans, power consumption is only 12.5% for a 50% air flow.

Less noise generation:Whereas halving air flow by switching off half the fans only reduces noise gener-ation by approx. 3 dB, halving air flow by reducing the speed brings about an im-provement of 15 dB.

Ecological, energy-saving and quiet-running: GreenTech EC fans

8

qv m³/h

cfmp fs

Pa

in. w

g

10000 20000 30000 40000 50000 60000

0 5000 10000 15000 20000 25000 30000 35000

400

800

1200

1600

12

34

56

RadiPac Ø 800

RadiPac Ø 1,000

AxiBlade Ø 910

AxiBlade Ø 800

AxiBlade Ø 800

Medium pressure axial fan

W3G Z50

AxiBlade®:Far greater efficiency and power density in the same installation space. Experience the new bench-mark in air conditioning and refrigeration.Find out more on Page 10.

The requirements for fans may differ depending on the size and area of application of a cooling tower. EC fan technology from ebm-papst turns cooling towers into economical and at the same time highly efficient installations. Find out on the following pages which ebm-papst fan solution is best suited to your application.

RadiPac®:RadiPac EC centrifugal fans offer a whole range of outstanding features, from high efficiency to simple handling and compact dimensions. Find out more on Page 11.

Medium pressure axial fan:A complete system consisting of motor, impeller and integrated variable frequency drive for the medium pressure range. All from one supplier and fully configured. Find out more on Page 12.

W3G Z50:Ideally equipped for maximum efficiency thanks to effective aerodynamics, integrated drive and integrated interface. Find out more on Page 13.

9

BCAB

CAqv m³/h

cfmp fs

Pa

in. w

g

5000 10000 15000 20000 25000 30000

0 5000 10000 15000

50

100

150

200

250

300

0.2

0.4

0.6

0.8

11.

2

W3G 910-LV12-36

W3G 800-LV05-36

W3G 800-LU21-36

For all applications, the modular system of the AxiBlade product range offers the best possible efficiency or noise characteristics to meet your requirements – with a system efficiency level of up to 54% and up to 8 dB(A) less noise as compared to the HyBlade product range. This means far greater efficiency and power density with the same installation space for every application.

AxiBlade®.

Nominal data

Size

Nom

inal

vol

tage

rang

e

Freq

uenc

y

Spee

d

Max

.po

wer

con

sum

ptio

n

Max

.in

put c

urre

nt

Max

.ba

ck p

ress

ure

Perm

issi

ble

ambi

ent

tem

pera

ture

Wei

ght

Dim

ensi

ons A

Dim

ensi

ons

B

Dim

ensi

ons C

Type mm VAC Hz rpm W A Pa °C kg mm mm mm

W3G 800-LU21-36 800 3~ 380-480 50/60 1,090 2,650 4.0 290 -25...+60 47 970 350 910

W3G 800-LV05-36 800 3~ 380-480 50/60 1,190 3,500 5.3 350 -25...+60 50 970 350 910

W3G 910-LV12-36 910 3~ 380-480 50/60 1,070 3,250 5.0 300 -25...+60 59 1,070 352 1,010

Subject to technical changes. We will gladly supply more detailed product data sheets on request.

10

qv m³/h

cfmp fs

Pa

in. w

g

10000 20000 30000 40000

0 5000 10000 15000 20000 25000

400

800

1200

1600

12

34

56 K3G 800-PW07-35

K3G A00-PV03-35

RadiPac®.

B C

A

More information? No problem: For technical information, please send an e-mail to info1@de.ebmpapst.com

Nominal data

Size

Nom

inal

vol

tage

rang

e

Freq

uenc

y

Spee

d

Max

.po

wer

con

sum

ptio

n

Max

.in

put c

urre

nt

Max

.ba

ck p

ress

ure

Perm

issi

ble

ambi

ent

tem

pera

ture

Wei

ght

Dim

ensi

ons A

Dim

ensi

ons

B

Dim

ensi

ons C

Type mm VAC Hz rpm W A Pa °C kg mm mm mm

K3G 800-PW07-35 800 3~ 380-480 50/60 1,370 11,300 17.5 – -25...+60 168 970 880 880

K3G A00-PV03-35 1,000 3~ 380-480 50/60 750 6,340 9.8 – -25...+60 178 1,180 873 1,100

Subject to technical changes. We will gladly supply more detailed product data sheets on request.

As the impeller, motor and electronics are optimally coordinated, overall efficiency levels well in excess of 60% are obtained. A major contribution to this comes from the GreenTech EC motor with external rotor. RadiPac EC centrifugal fans offer a whole range of outstanding features, from high efficiency to simple handling and compact dimensions.

11

A

B Cqv m³/h

cfmp fs

Pa

in. w

g

5000 10000 15000 20000 25000 30000

0 5000 10000 15000

100

200

300

400

500

0.5

11.

52

W3G 800-FL10-36

Medium-pressure axial fan.

Nominal data

Size

Nom

inal

vol

tage

rang

e

Freq

uenc

y

Spee

d

Max

.po

wer

con

sum

ptio

n

Max

.in

put c

urre

nt

Max

.ba

ck p

ress

ure

Perm

issi

ble

ambi

ent

tem

pera

ture

Wei

ght

Dim

ensi

ons A

Dim

ensi

ons

B

Dim

ensi

ons C

Basis p/n mm VAC Hz rpm W A Pa °C kg mm mm mm

W3G 800-FL10-36 800 3~ 380-480 50/60 2100 5,300 8.1 540 -25...+60 60 Ø 992 313 Ø 955

Subject to technical changes. We will gladly supply more detailed product data sheets on request.

With the new EC medium pressure axial fans, our highly efficient GreenTech EC technology is now also available for the medium pres-sure range. This will be news to you – and will make life easier. It means a complete system consisting of motor, impeller and integrated variable frequency drive. All from one supplier and fully configured.

12

qv m³/h

cfmp fs

Pa

in. w

g

10000 20000 30000 40000 50000 60000

0 5000 10000 15000 20000 25000 30000 35000

50

100

150

200

0.25

0.5

0.75

W3G Z50-EF10-36

A

BC

Axialventilator W3GZ50_02.ai 1 31.08.2018 11:38:59

A

BC

Axialventilator W3GZ50_02.ai 1 31.08.2018 11:38:59

W3G Z50.

The W3G Z50 is ideally suited for maximum efficiency thanks to its effective aerodynamics, integrated drive and integrated interface. Fitted with a double flange housing with integrated diffuser, this is an outstanding example of a particularly quiet-running axial fan.

Nominal data

Size

Nom

inal

vol

tage

rang

e

Freq

uenc

y

Spee

d

Max

.po

wer

con

sum

ptio

n

Max

.in

put c

urre

nt

Max

.ba

ck p

ress

ure

Perm

issi

ble

ambi

ent

tem

pera

ture

Wei

ght

Dim

ensi

ons A

Dim

ensi

ons

B

Dim

ensi

ons C

Basis p/n mm VAC Hz rpm W A Pa °C kg mm mm mm

W3G Z50-EF10-36 1,250 3~ 380-480 50/60 840 6,000 9.3 260 -25...+60 193 Ø 1,560 676 Ø 1,480

Subject to technical changes. We will gladly supply more detailed product data sheets on request.

13

www.ebmpapst.com

ebm-papstMulfingen GmbH & Co. KG

Bachmühle 274673 MulfingenGermanyPhone +49 7938 81-0Fax +49 7938 81-110info1@de.ebmpapst.com

PB-EN 38045-7-8811·2018-08·FF·1.500