This is a standalone or PC controlled unit designed for timing and resistance measurements of one break per phase MV and HV switchgear. The three timing channels record the closing and opening of the main and resistor contacts instantaneously when a voltage is sensed over the breaker coil. This easy-to-use unit allows selection of different operational modes: Open (O), Close (C), Open-Close (O-C), Close-Open (C-O), and Open-Close-Open (O-C-O). Three auxiliary input are available for monitoring auxiliary contacts and can be utilised to facilitate an external trigger. To check for mechanical issues the CAT34 is ‘first trip’ test capable.

The main contact channels can also measure the resistance value of pre-insertion resistors if they are present within the circuit breaker. Test results can be printed on the 80 mm optional thermal printer in tabulated and graphical form. In-depth CB analysis is possible using DV-Win analytical software which comes as standard with all DV Power instrumentation.

  • Simple & easy to operate
  • First trip test capable
  • Timing and motion measurement
  • 3 timing channels for main and resistive contacts
  • 3 timing channels for auxiliary inputs
  • Resistance measurement of pre-insertion resistors
  • 4 Analog Inputs + 1 Transducer Input
  • Supports both digital and analog transducers
  • Detailed analysis of test results using DV-Win software
Included accessories

  • DV-Win software
  • USB cable
  • Mains power cable
  • Ground (PE) cable
Recommended accessories

  • Main Contact Cables 5 m with SCT clamps
  • External trigger cable 5 m with banana plugs
  • Coil control cable set 5 m with banana plugs
  • Coil supply cable set 2 x 5 m 2,5 mm2 with banana plugs
  • Auxiliary contacts cable set 5 m with banana plugs
  • Analog channels cable set 4 x 5 m with banana plugs
  • Cable bag
  • Transport case

DV-Win allows graphical presentation of measurements and timing test results using cursors and powerful zoom functions for detailed analysis. Colours, grids, scales and positioning of the test data are all controlled by the user. DV-Win supports an automatic unit conversion (e.g. cycles to seconds or mm to inches). The test records can be exported into all mainstream file formats.