Automatic Current Transformer Comparator (KATC-C2)

Got older, slower equipment? Knopp’s Automatic Current Transformer Comparator (KATC-C2) is faster, more robust and more accurate!

Knopp’s KATC-C2 is a high accuracy current comparator that is compatible with all older generation Knopp comparators, and is designed to be a direct, plug-in replacement requiring no modification of the existing Knopp Current Transformer Test Systems. Save time and money on service by upgrading your comparator to our new next generation model!



  • Easily interchangeable with other Knopp comparators; no modification needed
  • Compatible with TESCO Test Manager
  • Ability to test transformers with 5 ampere secondaries
  • Automatic sensing of 50 or 60 Hertz current
  • Calculation and display of ANSI accuracy class
  • Usage and hookup error detection and alerts, resistant to excessive test current
  • Fast testing time (under one minute)
  • Continuous instantaneous readings
  • Automatic operation (no manual “nulling” or adjustments required)
  • Demag
  • Auto-ranging capability
  • Eliminated the possibility of burning up resistors by turning up the current too fast
  • 5” Full color LCD, 800 x480
  • KATC-C2-1 model allows the ability to test down to unity

Equipment Documentation


Catalog No. KATC-C2 – Knopp Precision Transformer Comparator

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