© Lukas Zwiessele | ebm-papst

Insight into our testing centerTested to the max: Accel­er­ated service life tests

Accel­er­ated service life tests combine several envi­ron­mental influ­ences in order to simu­late a fan’s life cycle in fast motion. This is how ebm-papst puts its fans through their paces.

In the testing center in Hollen­bach, fans are pushed to their limits and beyond with real-life envi­ron­mental influ­ences. New prod­ucts, sizes, and compo­nents pass through the test stations in a total of six test bays over an area of approx­i­mately 2,500 square meters. In this series, we take a closer look at each of these test bays. The sixth and last one is for accel­er­ated service life tests devel­oped by ebm-papst itself.

Fans need to work reli­ably for many decades, so their service life must be vali­dated before­hand with all asso­ci­ated loads such as heat or rain. To find out where the crit­ical points in the prod­ucts lie as quickly as possible, ebm-papst has set up the accel­er­ated service life tests H0, H1, and H2.

Mr. Kemmer, how do you push the fans in the test center to the limit?

They simu­late a product’s life cycle in fast motion by combining several types of load. These tests are performed in 40-square-meter cham­bers at the testing center. H1 and H2 are actu­ally envi­ron­mental classes intro­duced by ebm-papst itself.

The accel­er­ated service life tests explained

Test H0

A fan in the field is run at an ambient temper­a­ture of 20 to 40 degrees Celsius and at 20 to 70 percent of its power, for example. To map this stan­dard load profile quickly, the product is run at maximum power and the maximum permis­sible ambient temper­a­ture for about 6 months in the H0 test.

Test H1

The H1 test is a “temper­a­ture change rain test” devel­oped by ebm-papst itself. It is a long-term test that tests the resis­tance of fans to climatic condi­tions. In this case, the fan is run for six months and subjected to five alter­nating temper­a­ture cycles per day (900 in total, from -10 to +60 degrees Celsius), as well as conden­sa­tion.

Test H2

The H2 test is also a “temper­a­ture change rain test” which tests the fan’s resis­tance to climatic condi­tions over a long period of time. The fan is run for six months and subjected to five alter­nating temper­a­ture cycles per day (900 in total, from -10 to +60 degrees Celsius). However, direct rain­fall is added in this case.

The employees carry out visual and func­tional tests both before and after the long-lasting inspec­tions. For the visual tests, they rely on their intu­ition and accu­mu­lated expe­ri­ence to detect even the smallest damage such as cracks. For the func­tional tests, the para­me­ters that count are speed, power or temper­a­tures, which are logged in real time during the tests – by Intel­li­Gate gate­ways from ebm-papst neo.

Eval­uate with Intel­li­Gate from ebm-papst neo

Thanks to the gate­ways, employees can access the logged data at any time from anywhere, as it is auto­mat­i­cally backed up in a cloud. It is even possible to auto­mat­i­cally check the values of a test for devi­a­tions from the spec­i­fi­ca­tions and receive corre­sponding alarm messages. After the end of the test, the data is then stored collec­tively.

Exclu­sive insights into all test fields

Learn more about how ebm-papst puts fans to the test in the indi­vidual test fields. Each article with exciting insights, videos and pictures!

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