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Short time value is not available when testing NSX Breakers Micrologic 5 / 6 A or E trip units with test kit

FAQ000208335

25 June 2021

When testing the NSX Breakers Micrologic 5 / 6 A or E trip units with Test kit (through USB maintenance interface and LTU software) you may get this message "the short time value is not available" 

 

This can occur if the Ii setting is too close to the Isd setting. When taking into account the tolerance of pick-up value of Ii and Isd, there is overlap between Ii and Isd, the suggestion is to make the Isd setting lower or Ii setting higher, and test it again

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More information on how to test NSX Breakers with Test kit or Testing Reliability of Micrologic Trip Unit on NSX Circuit Breaker - https://www.youtube.com/watch?v=gQ-5MTq8NEY