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DV-Power CAT500 Circuit Breaker Timer & Analyser

CAT500 summarizes all our experience and knowledge in the design of circuit breaker testing equipment for the past 13 years. CAT500 introduces some unique testing features and significantly saves the time required for condition assessment of all types of medium- and high voltage circuit breakers.

The timing channels record closing and opening of the main arcing, resistor, and auxiliary contacts. The main contact channels can also measure the resistance value of the pre-insertion resistors (if present in the circuit breaker).

CAT500 records graphs of both, open and close coil currents and displacements of the HV and MV circuit breaker moving parts. The six coil control analog channels can initiate the operation, measure and record coil currents simultaneously (OPEN and CLOSE), up to 35 A.

Touch-screen color display provides easy control of test device and result analysis. Test results are printed on the 112 mm (4.4“) thermal printer (optional accessory) in tabular and graphical form.



  • Accurate measurement in HV environment

  • 10.1’’ touch-screen display

  • Timing, motion, and vibrations measurement

  • Improved testing time with single cable connection and simultaneous measurement

  • CAT Modules for static/dynamic resistance measurement on up to 12 main contact chambers under BSG conditions

  • GIS Module for timing measurement of single pole-controlled GIS CB under BSG conditions



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Circuit Breaker Test Sets


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