[PSES] EN 61000-4-5 Lightning Surge Testing on AC Power

2012-06-01 Thread Larry Stillings
All,

What is the defined sequence of test voltages when performing testing to EN
61000-4-5 per a family standard that says use the procedure in EN 61000-4-5.


For example when doing a 2 kV Lines to Earth, 1 kV Line to Line test on AC
power, is it specified what steps must be used for this test. In other words
should I test at 500V, 1000V and 2000V for line to ground and 500V, 1000V
from line to line. Or should only 2000V Line to Ground and 1000V line to
line, or something different, like 500V, 1000V, 1500V, 2000V for example.

We have always done the three steps, but now looking through the 2006
edition of the standard, I cannot find where it states what steps should be
used. I know there a couple of family standards that say just the two
maximum voltages, but was just wondering? Any guidance or pointers is
appreciated.

Thanks in advance.

Larry K. Stillings
Compliance Worldwide, Inc.
Test Locally, Sell Globally!
FCC - Wireless - Telecom - CE Marking
357 Main Street
Sandown, NH 03873
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Re: [PSES] EN 61000-4-5 Lightning Surge Testing on AC Power

2012-06-01 Thread T.Sato
On Fri, 1 Jun 2012 17:05:22 -0400,
  Larry Stillings la...@complianceworldwide.com wrote:

 What is the defined sequence of test voltages when performing testing to EN
 61000-4-5 per a family standard that says use the procedure in EN 61000-4-5.
 
 For example when doing a 2 kV Lines to Earth, 1 kV Line to Line test on AC
 power, is it specified what steps must be used for this test. In other words
 should I test at 500V, 1000V and 2000V for line to ground and 500V, 1000V
 from line to line. Or should only 2000V Line to Ground and 1000V line to
 line, or something different, like 500V, 1000V, 1500V, 2000V for example.
 
 We have always done the three steps, but now looking through the 2006
 edition of the standard, I cannot find where it states what steps should be
 used. I know there a couple of family standards that say just the two
 maximum voltages, but was just wondering? Any guidance or pointers is
 appreciated.

In clause 9, the standard says:

  ... Therefore the test voltage has to be increased by steps up to
  the test level specified in the product standard or test plan. All
  lower levels including the selected test level shall be satisfied. ...

For testing purpose, lower levels here may be the lower levels
specified in clause 5 of the standard.

See also Guidance Note Addresses Surge Test Problems, at:

  http://www.ce-mag.com/archive/02/11/williams.html

Regards,
Tom

-- 
Tomonori Sato  vef00...@nifty.ne.jp
URL: http://homepage3.nifty.com/tsato/

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