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ITTSB Blog Specific => Test & Measurement / Market / News => Topic started by: Kiriakos GR on March 01, 2017, 03:19:34 PM

Title: Panel mount switch technical parameters ( AC-23 AC-22 AC-3) IEC 60947-3
Post by: Kiriakos GR on March 01, 2017, 03:19:34 PM
Life of Electricians this is tremendously hard especially of the ones speaking English by not be Americans or English in origin.

IEC 60947-3 this standard gives definitions of current limits that one electrical switch can handle according to the type of load. 

I got from China one panel type switch LW28-20 (cam switch) and while I did made a correct choice about this be suitable for my application, I started having difficulties to identify in full all it technical parameters listed as: 
 
AC-21A
AC-22A
AC-23A
AC-2
AC-3
AC-4
AC-15

IEC baptized all such specifications by the tittle : electrical engineering utilization categories
It took me 30 minutes at trying to find of what I was looking because IEC description it is a weird selection of words.

Now I am very happy to know that my LW28-20/3 ( GB14048.5) this is 7.5KW  15A  AC-23 = inductive loads

From the other hand I am going to ignore original product schematic when advice's me to have SEX  with the actuator.  ;D
No one is perfect  8)

http://www.glele.com/common/godownloads.ashx?id=168 (http://www.glele.com/common/godownloads.ashx?id=168)


Utilization categories
https://en.wikipedia.org/wiki/Utilization_categories (https://en.wikipedia.org/wiki/Utilization_categories)