How to fill out primary/secondary voltages in EC002485/EC002486 (One/three phase transformers)?

Last comment 17/09/2018 17:36 by Roberto
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Roberto Ortega 4 years ago created

How should we fill out the primary and secondary voltages in one/three phase transformers? Both in EC002485 and EC002486, we have

EF006125 - Primary voltage 1
EF006126 - Primary voltage 2
EF006127 - Primary voltage 3
EF007410 - Primary voltage 4
EF007411 - Primary voltage 5
EF007412 - Primary voltage 6
EF007413 - Primary voltage 7
EF007414 - Primary voltage 8
EF007415 - Primary voltage 9
EF007409 - Primary voltage 10
EF007472 - Secondary voltage 1
EF007474 - Secondary voltage 2
EF007475 - Secondary voltage 3
EF007476 - Secondary voltage 4
EF007477 - Secondary voltage 5
EF007478 - Secondary voltage 6
EF007479 - Secondary voltage 7
EF007480 - Secondary voltage 8
EF007481 - Secondary voltage 9
EF007473 - Secondary voltage 10

How should we fill out this part? Each of these features is type "range", so if one transformer has primary voltages of 230 V, 400 V, and 460 V, I was thinking of filling out "EF006125 - Primary voltage 1" with min. value "230" and max. value "460". Another option would be to put in "EF006125 - Primary voltage 1", 230 (min)/230 (max), then "EF006126 - Primary voltage 2", 400 (min)/400 (max) and in "EF006127 - Primary voltage 3", 460 (min)/460 (max). 

I also found an example by Eaton, where they repeat the primary and secondary voltages more than once, this is not correct right?

What do you think?

Thanks a lot!


Marc Habets 4 years ago created
Hi Roberto, repeating like Eaton does for sure is not correct. Without being an expert again I think I have an idea of 'the truth' here. See also the attached screenshot from another example from Siemens. If they would say primary voltage 300-520 Volt that would suggest that the voltage is 'stepless', same idea for secondary voltage. The Siemens data suggest it is not stepless, that would be the reason for the 10 different features. In the case of the Siemens example, a numeric feature would have been enough. But you often see a voltage like 220-240 or like Eaton says in you example +/- 5%, I think that is what the range type serves for. Hope this helps and please anyone correct me if I am wrong.
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Topic started 17 September 2018 at 16:01
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