Difference between revisions of "Testing Procedures for Power Engineering"

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(→‎13.4.2.4 Switching Capacity)
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'''Table 13.3: Testing for the Short Circuit Breaking Capacity of Low Voltage Power Switches According to IEC/EN 60947-2 (Shortened Summary)'''
 
'''Table 13.3: Testing for the Short Circuit Breaking Capacity of Low Voltage Power Switches According to IEC/EN 60947-2 (Shortened Summary)'''
  
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{| class="twocolortable" style="text-align: left; font-size: 12px"
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|-
 
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!Test characteristics
 
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!Rated ultimate short circuit breaking capacity I<sub>CU</sub>
 
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!Service short circuit breaking capacity I<sub>CS</sub>
 
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|-
 
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|Test conditions
 
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|Ue<br />cosn depends on value of current I in kA, i.e<br />6 < l < 10<br />10  cosn0.5<br />< l < 20<br />cosn0.3<br />20 < l < 50<br />cosn0.25<br />50 < l cosn 0.2
 
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|Non-inductive or slightly inductive loads, resistance furnaces
 
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|}
 
 
</figtable>
 
</figtable>
  

Revision as of 15:22, 23 April 2014