© Lukas Zwiessele | ebm-papst

Testing center: test your knowl­edge in 8 ques­tions!

In our testing center series, we intro­duced all the test fields which fans, motors, and other compo­nents undergo. In this quiz, you can put your knowl­edge of the various tests through its paces – just like ebm-papst does to its fans.

How many test fields are there in the testing center?

The testing center is approx. 2,500 square meters. How many test fields are there?

  • Six
  • Twelve
  • Four

The solu­tion:

There are a total of six test fields: shock and vibra­tion, climate, impeller strength, spin and cycle test, water IP degree of protec­tion, salt spray, and accel­er­ated service life tests.

Which envi­ron­mental influ­ences are the fans tested for in the testing center?

All these envi­ron­mental influ­ences can affect the service life of fans, but which ones have a test field?

  • Temper­a­ture
  • Humidity
  • Water
  • Ice
  • Storm
  • Salt spray
  • Vibra­tion
  • Shock
  • Noise

The solu­tion:

Each envi­ron­mental influ­ence acts on the test spec­i­mens indi­vid­u­ally and also in combi­na­tion. Heat and cold are tested under the temper­a­ture envi­ron­mental influ­ence in the testing center and do not have their own test.

The spin test is avail­able for both metal and plastic impellers.

What happens if a product is damaged during a test?

Things can and should crack and break in the testing center some­times – but what happens then?

  • It goes back to the devel­oper.
  • It goes onto the next test field.
  • It is destroyed and a new product under­goes the test again.

The solu­tion:

If a fan or compo­nent is damaged during a test, this is noted accord­ingly and the test spec­imen is returned to the devel­oper. They then have to find out what is the problem with the product and improve it.

Which compo­nents have their own specific test fields?

Different compo­nents and mate­rials also have different damage symp­toms. The following compo­nents there­fore also have different test fields:

  • Metal impellers
  • Nuts
  • Plastic impellers
  • Wing screws
  • Cable harnesses

The solu­tion:

Metal and plastic impellers have different failure patterns. Metal tends to break and plastic flows, meaning it expands. For this reason, the impellers each have their own test field.

We demand every­thing from our prod­ucts in the testing center in Hollen­bach, in order to discover crit­ical points faster.

Erich Kemmer, Group Leader Vali­da­tion

When it comes to the climate test field, which temper­a­ture range is used in the climatic chamber to test the fans?

Are the temper­a­tures used similar to those that occur in a fan’s real service life or are the loads perhaps even higher?

  • 0 to +100 degrees Celsius
  • -30 to +120 degrees Celsius
  • -70 to +180 degrees Celsius

The solu­tion:

The climatic cham­bers provide a temper­a­ture range of -70 to +180 degrees Celsius. These high loads mean that crit­ical points can be discov­ered more quickly.

What addi­tional humidity content can the climatic chamber simu­late?

There is also a changing humidity in addi­tion to the change in temper­a­ture – but how high can this be?

  • 0 to 50 percent
  • 20 to 90 percent
  • 10 to 98 percent

The solu­tion:

In addi­tion to the various temper­a­tures that can be set, the humidity content of the air in the climatic chamber can also be set from 10 to 98.

Here, fans are inves­ti­gated to check for extremely fine cracks which cannot be iden­ti­fied by the naked eye.

Which tests are specif­i­cally used to test the impellers?

Fan impellers rotate around the clock. Which three tests in specific do these compo­nents undergo?

  • Spin test
  • Cycle test
  • Climate test
  • Impeller strength test
  • Salt spray test

The solu­tion:

Impellers are put to the test in the three-part test field of impeller strength, spin, and cycle test.

How long do the accel­er­ated service life tests (H0, H1, and H2) each take?

Temper­a­ture changes, rain, ice – this test field really gets down to busi­ness. How long could that take?

  • Two weeks
  • Three months
  • Six months

The solu­tion:

Just one of the accel­er­ated service life tests takes six months – during which time the test spec­imen is really put through its paces.

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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