66786-4-7320

66786-4-7320 Datasheet

69667-2-4039

Part	Datasheet
66786-4-7320	66786-4-7320 (pdf)

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Axial fans version 07 The engineer’s choice Axial fans ebm-papst's axial fans prove their reputation as space-saving wonders by moving air for hot or cold air exchange in a wide variety of devices and systems. Their outstanding features are their small installation depth, low noise level and exceptional efficiency, and are particularly well suited for air flow through heat exchangers. Furthermore, in the EC version, they become intelligent "energy-saving wonders" for an extremely wide range of applications, primarily in ventilation, air-conditioning and refrigeration technology and the automotive industry. air flow at medium pressure K series with especially low noise level ideally suited for refrigeration plant applications A series for high-pressure applications Design according to requirements Energy efficiency, controllability and low-noise performance and all this together with external rotor motors in AC and EC technology ebm-papst axial fans are optimally matched to customer requirements. The EC technology 12 VDC to 110 VDC or line-voltage-powered 100 VAC to 480 VAC with integrated or external electronics enables precision open and closed-loop control with very high efficiency. The following standard features are available tach output, error message, linear or PWM input, temperature or flow rate-dependent control systems or bus-connectable interface. is a registered trademark of ebm-papst Mulfingen GmbH & Co. KG Table of content General information Company profile ebm-papst Our key to success How to use this catalogue How to find your ebm-papst product How to order your ebm-papst product AC axial fans, AC diagonal fans AC axial fans, S series AC axial fans, K series AC axial fans, A series EC axial fans, EC diagonal fans EC axial fans, S series Square shaded-pole motors Q-motor Energy-saving motors ESM EC-SYSTEMS Options Switch power supplies External commutation electronics for rail technology Temperature sensor / control module Pressure control / selection module for 3 speeds Interface converter / RS485 repeater RS485 terminal box / hand-held control terminal Speed setting LISA control software / fan control software HMS controller Accessories Guard grilles, streamers Wall rings Connection leads Accessories for Q-motors and ESM Terminal boxes, capacitors Balancing quality Testing the balancing quality is carried out in compliance with Residual imbalance according to DIN ISO 1940 Standard balancing quality level G Should you require a higher balancing quality level for your specific application, please let us know and specify this when ordering your product. Chemo-physical strain / performance parameters Should you have questions about chemo-physical strain, please direct them to your ebm-papst contact. Fields of application, industries and applications Our products are used in various industries and applications Ventilation, air-conditioning and refrigeration technology, clean room technology, automotive and rail technology, medical and laboratory technology, electronics, computer and office technology, telecommunications, household appliances, heating, machines and plants, drive engineering. Our products are not designed for use in the aviation and aerospace industry! Standards Information on standards is provided in the product-specific data sheets. EMC Information on EMC standards is provided in the product-specific data sheets. Complying with the EMC standards has to be established on the final appliance, as different mounting situations can result in changed EMC properties. Leakage current Information on the leakage current is provided in the product-specific data sheets. The measurement takes place according to Fig. D.1 according to IEC 60990, Fig. Approvals In case you require a specific approval for your ebm-papst product VDE, UL, GOST, CCC, CSA, etc. please let us know. Most of our products can be supplied with the relevant approval. Information on existing approvals is provided in the product-specific data sheets. Air performance measurements All air performance measurements are carried out on inlet-side chamber test rigs in conformity with the requirements of DIN 24163 and ISO The fans being tested are installed on the measuring chamber at free air intake and discharge installation type A according to DIN 24163 Part 1 and are operated at nominal voltage for AC, also at nominal frequency without additional attachments such as the guard grille. As required by the standard, the air performance curves correspond to an air density of kg/m3. Technology Accessories EC-SYSTEMS Contacts Room for precision noise measuring Measurement conditions for air and noise measurement ebm-papst products are measured under the following conditions Axial and centrifugal fans with direction of air flow "V", without guard grille and in the wall ring Backward curved centrifugal fans, free-running and with inlet nozzle Forward curved single and dual inlet centrifugal fans with housing Sound pressure level and sound level All noise levels are measured in conformity to DIN 45635 and ISO 3744/3745 according to precision class 2 and specified A-weighted. When the sound pressure level Lp is measured, the microphone is on the intake side of the fan being tested, usually at a distance of 1 m on the fan axis. To measure the sound level Lw , 10 microphones are distributed over an enveloping surface on the intake side of the fan being tested see graphic . The sound level measured can be roughly calculated from the sound pressure level by adding 7 dB. Measurement configuration according to DIN 45635 T38 10 measuring points h = 1.5d to 4.5d Measurement area S = 6d2 + 7d h + 1.5d 1,5d 3d 2d General information AC axial fans AC axial S series AC axial K series AC axial A series EC axial fans EC axial S series Q-motor Increase in sound pressure / sound power level Adding multiple noise sources with the same level Adding 2 noise sources with the same volume results in a level increase of approx. 3 dB. The noise characteristics of multiple identical fans can be determined in advance based on the noise values specified in the data sheet. This is shown in the diagram opposite. Example 8 A3G800 axial fans are on a condenser. According to the data sheet, the sound pressure level of a fan is approximately 75 dB A . The level increase measured from the diagram is 9 dB. Thus the overall sound level of the installation can be expected to be 84 dB A . [dB] Curves Increase in sound pressure / sound power level Adding two noise sources with different levels The acoustic performance of two different fans can be predetermined based on the sound levels given in the data sheet. This is shown in the diagram opposite. Example There is an axial fan A3G800 with a sound pressure level of 75 dB A at the operating point and an axial fan A3G710 with 71 dB A in a ventilation unit. The level difference is 4 dB. The level increase can now be read in the diagram as approx. dB. This means that the overall sound level of the unit can be expected to be dB A . [dB] Number of sources of sound with identical level 15 20 25 Inverse square laws The sound level is independent of the distance from the noise source. Conversely, the sound pressure level decreases as distance from the noise source increases. The diagram to the right shows the level decrease expressed in terms of an output measurement at a distance of 1 m from the noise source under far-field conditions. Example An axial fan A3G800 has a sound pressure level of 75 db A at the operating point. Now, you want to measure the noise characteristics at a distance of 20 m. In the diagram to the right, you can now read a reduction of 26 dB for the 20 m distance. Decrease in sound pressure level [dB] Difference in level with two sources of sound [dB] -30 -26 -20

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Axial fans version 07

The engineer’s choice

Axial fans
ebm-papst's axial fans prove their reputation as space-saving wonders by moving air for hot or cold air exchange in a wide variety of devices and systems. Their outstanding features are their small installation depth, low noise level and exceptional efficiency, and are particularly well suited for air flow through heat exchangers. Furthermore, in the EC version, they become intelligent "energy-saving wonders" for an extremely wide range of applications, primarily in ventilation, air-conditioning and refrigeration technology and the automotive industry.
air flow at medium pressure K series with especially low noise level
ideally suited for refrigeration plant applications A series for high-pressure applications

Design according to requirements Energy efficiency, controllability and low-noise performance and all this together with external rotor motors in AC and EC technology ebm-papst axial fans are optimally matched to customer requirements. The EC technology 12 VDC to 110 VDC or line-voltage-powered 100 VAC to 480 VAC with integrated or external electronics enables
precision open and closed-loop control with very high efficiency. The following standard features are available tach output, error message, linear or PWM input, temperature or flow rate-dependent control systems or bus-connectable interface.
is a registered trademark of ebm-papst Mulfingen GmbH & Co. KG

Table of content

General information

Company profile ebm-papst

Our key to success

How to use this catalogue

How to find your ebm-papst product

How to order your ebm-papst product

AC axial fans, AC diagonal fans

AC axial fans, S series

AC axial fans, K series

AC axial fans, A series

EC axial fans, EC diagonal fans

EC axial fans, S series

Square shaded-pole motors Q-motor

Energy-saving motors ESM

EC-SYSTEMS

Options

Switch power supplies

External commutation electronics for rail technology

Temperature sensor / control module

Pressure control / selection module for 3 speeds

Interface converter / RS485 repeater

RS485 terminal box / hand-held control terminal

Speed setting

LISA control software / fan control software

HMS controller

Accessories

Guard grilles, streamers

Wall rings

Connection leads

Accessories for Q-motors and ESM

Terminal boxes, capacitors
Balancing quality Testing the balancing quality is carried out in compliance with Residual imbalance according to DIN ISO 1940 Standard balancing quality level G Should you require a higher balancing quality level for your specific application, please let us know and specify this when ordering your product.

Chemo-physical strain / performance parameters Should you have questions about chemo-physical strain, please direct them to your ebm-papst contact.

Fields of application, industries and applications Our products are used in various industries and applications Ventilation, air-conditioning and refrigeration technology, clean room technology, automotive and rail technology, medical and laboratory technology, electronics, computer and office technology, telecommunications, household appliances, heating, machines and plants, drive engineering. Our products are not designed for use in the aviation and aerospace industry!

Standards Information on standards is provided in the product-specific data sheets.

EMC Information on EMC standards is provided in the product-specific data sheets. Complying with the EMC standards has to be established on the final appliance, as different mounting situations can result in changed EMC properties.

Leakage current Information on the leakage current is provided in the product-specific data sheets. The measurement takes place according to Fig. D.1 according to IEC 60990, Fig.

Approvals In case you require a specific approval for your ebm-papst product VDE, UL, GOST, CCC, CSA, etc. please let us know. Most of our products can be supplied with the relevant approval. Information on existing approvals is provided in the product-specific data sheets.

Air performance measurements All air performance measurements are carried out on inlet-side chamber test rigs in conformity with the requirements of DIN 24163 and ISO The fans being tested are installed on the measuring chamber at free air intake and discharge installation type A according to DIN 24163 Part 1 and are operated at nominal voltage for AC, also at nominal frequency without additional attachments such as the guard grille. As required by the standard, the air performance curves correspond to an air density of kg/m3.

Technology Accessories EC-SYSTEMS

Contacts

Room for precision noise measuring

Measurement conditions for air and noise measurement ebm-papst products are measured under the following conditions Axial and centrifugal fans with direction of air flow "V", without guard
grille and in the wall ring Backward curved centrifugal fans, free-running and with inlet nozzle Forward curved single and dual inlet centrifugal fans with housing

Sound pressure level and sound level All noise levels are measured in conformity to DIN 45635 and ISO 3744/3745 according to precision class 2 and specified A-weighted. When the sound pressure level Lp is measured, the microphone is on the intake side of the fan being tested, usually at a distance of 1 m on the fan axis. To measure the sound level Lw , 10 microphones are distributed over an enveloping surface on the intake side of the fan being tested see graphic . The sound level measured can be roughly calculated from the sound pressure level by adding 7 dB.

Measurement configuration according to DIN 45635 T38 10 measuring points
h = 1.5d to 4.5d Measurement area S = 6d2 + 7d h + 1.5d
1,5d
3d 2d

General information

AC axial fans

AC axial S series

AC axial K series

AC axial A series

EC axial fans

EC axial S series

Q-motor

Increase in sound pressure / sound power level

Adding multiple noise sources with the same level Adding 2 noise sources with the same volume results in a level increase of approx. 3 dB. The noise characteristics of multiple identical fans can be determined in advance based on the noise values specified in the data sheet. This is shown in the diagram opposite. Example 8 A3G800 axial fans are on a condenser. According to the data sheet, the sound pressure level of a fan is approximately 75 dB A . The level increase measured from the diagram is 9 dB. Thus the overall sound level of the installation can be expected to be 84 dB A .
[dB]

Curves

Increase in sound pressure / sound power level

Adding two noise sources with different levels The acoustic performance of two different fans can be predetermined based on the sound levels given in the data sheet. This is shown in the diagram opposite. Example There is an axial fan A3G800 with a sound pressure level of 75 dB A at the operating point and an axial fan A3G710 with 71 dB A in a ventilation unit. The level difference is 4 dB. The level increase can now be read in the diagram as approx. dB. This means that the overall sound level of the unit can be expected to be dB A .
[dB]

Number of sources of sound with identical level
15 20 25

Inverse square laws The sound level is independent of the distance from the noise source. Conversely, the sound pressure level decreases as distance from the noise source increases. The diagram to the right shows the level decrease expressed in terms of an output measurement at a distance of 1 m from the noise source under far-field conditions. Example An axial fan A3G800 has a sound pressure level of 75 db A at the operating point. Now, you want to measure the noise characteristics at a distance of 20 m. In the diagram to the right, you can now read a reduction of 26 dB for the 20 m distance.

Decrease in sound pressure level
[dB]

Difference in level with two sources of sound
[dB]
-30 -26 -20

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Datasheet ID: 66786-4-7320 510568