IT-25B Impulse Spark Tester

IT-25B Impulse Spark Tester

Impulse Spark Tester

While most military standards now favor high frequency spark testing over impulse spark testing, the IT-25B Impulse Spark Tester is available for use in some aeronautic applications that still specify the impulse method.  The IT-25B meets the test requirements of military specifications MIL-C-13777E, MIL-W-16878, and NEMA standards for hook-up wire used in high temperature wire applications.  This method is favored as an alternate to a wet dielectric test.



  • Impulse spark testing
  • Test voltages to 25KV
  • Meets MIL-C-13777E, MIL-W-16878D, NEMA specifications
  • Process control output

Typical Test Products

  • MIL-C-13777E, MIL-W-16878D, NEMA products
  • Hi-temperature hookup wire
  • Solid or foam insulations to 2″ diameter
  • Line speeds to 10,000 fpm


For assistance in finding the correct spark tester for your application, complete the Wire & Cable Product Questionnaire.